Update vendor

go.mod

@@ -10,7 +10,7 @@ replace (
 require (
 	github.com/googleapis/gnostic v0.2.0
 	github.com/gorilla/mux v1.7.3
-	github.com/kisielk/errcheck v1.2.0 // indirect
+	github.com/mxk/go-flowrate v0.0.0-20140419014527-cca7078d478f // indirect
 	github.com/rancher/norman v0.0.0-20190704000224-043a1c919df3
 	github.com/rancher/wrangler v0.1.4
 	github.com/rancher/wrangler-api v0.1.5-0.20190619170228-c3525df45215

go.sum

@@ -1,63 +1,28 @@
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
-github.com/Azure/go-autorest v11.1.2+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/NYTimes/gziphandler v0.0.0-20170623195520-56545f4a5d46/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ=
 github.com/PuerkitoBio/purell v1.0.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
-github.com/PuerkitoBio/purell v1.1.1/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
 github.com/PuerkitoBio/urlesc v0.0.0-20160726150825-5bd2802263f2/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
-github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
-github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
-github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
-github.com/blang/semver v3.5.0+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnwebNt5EWlYSAyrTnjyyk=
-github.com/coreos/bbolt v1.3.1-coreos.6/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
-github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
-github.com/coreos/etcd v3.3.13+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
-github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
-github.com/coreos/go-oidc v0.0.0-20180117170138-065b426bd416/go.mod h1:CgnwVTmzoESiwO9qyAFEMiHoZ1nMCKZlZ9V6mm3/LKc=
-github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
-github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
-github.com/coreos/go-systemd v0.0.0-20180511133405-39ca1b05acc7/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
-github.com/coreos/pkg v0.0.0-20180108230652-97fdf19511ea/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
-github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
 github.com/davecgh/go-spew v0.0.0-20151105211317-5215b55f46b2/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/dgrijalva/jwt-go v0.0.0-20160705203006-01aeca54ebda/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
-github.com/docker/docker v0.7.3-0.20190327010347-be7ac8be2ae0/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
-github.com/docker/spdystream v0.0.0-20160310174837-449fdfce4d96/go.mod h1:Qh8CwZgvJUkLughtfhJv5dyTYa91l1fOUCrgjqmcifM=
-github.com/elazarl/goproxy v0.0.0-20170405201442-c4fc26588b6e/go.mod h1:/Zj4wYkgs4iZTTu3o/KG3Itv/qCCa8VVMlb3i9OVuzc=
 github.com/emicklei/go-restful v0.0.0-20170410110728-ff4f55a20633/go.mod h1:otzb+WCGbkyDHkqmQmT5YD2WR4BBwUdeQoFo8l/7tVs=
-github.com/emicklei/go-restful v2.9.5+incompatible/go.mod h1:otzb+WCGbkyDHkqmQmT5YD2WR4BBwUdeQoFo8l/7tVs=
 github.com/evanphx/json-patch v4.2.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
-github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
-github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/ghodss/yaml v0.0.0-20150909031657-73d445a93680/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
-github.com/ghodss/yaml v0.0.0-20180820084758-c7ce16629ff4/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/go-openapi/jsonpointer v0.0.0-20160704185906-46af16f9f7b1/go.mod h1:+35s3my2LFTysnkMfxsJBAMHj/DoqoB9knIWoYG/Vk0=
-github.com/go-openapi/jsonpointer v0.19.2/go.mod h1:3akKfEdA7DF1sugOqz1dVQHBcuDBPKZGEoHC/NkiQRg=
 github.com/go-openapi/jsonreference v0.0.0-20160704190145-13c6e3589ad9/go.mod h1:W3Z9FmVs9qj+KR4zFKmDPGiLdk1D9Rlm7cyMvf57TTg=
-github.com/go-openapi/jsonreference v0.19.2/go.mod h1:jMjeRr2HHw6nAVajTXJ4eiUwohSTlpa0o73RUL1owJc=
 github.com/go-openapi/spec v0.0.0-20160808142527-6aced65f8501/go.mod h1:J8+jY1nAiCcj+friV/PDoE1/3eeccG9LYBs0tYvLOWc=
-github.com/go-openapi/spec v0.19.2/go.mod h1:sCxk3jxKgioEJikev4fgkNmwS+3kuYdJtcsZsD5zxMY=
 github.com/go-openapi/swag v0.0.0-20160704191624-1d0bd113de87/go.mod h1:DXUve3Dpr1UfpPtxFw+EFuQ41HhCWZfha5jSVRG7C7I=
-github.com/go-openapi/swag v0.19.2/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh66Z9tfKk=
-github.com/gogo/protobuf v0.0.0-20190410021324-65acae22fc9/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
 github.com/gogo/protobuf v1.2.1 h1:/s5zKNz0uPFCZ5hddgPdo2TK2TVrUNMn0OOX8/aZMTE=
 github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
-github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
-github.com/golang/groupcache v0.0.0-20160516000752-02826c3e7903/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef h1:veQD95Isof8w9/WXiA+pa3tz3fJXkt5B7QaRBrM62gk=
 github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/protobuf v0.0.0-20161109072736-4bd1920723d7/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/google/btree v0.0.0-20160524151835-7d79101e329e/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/go-cmp v0.3.0 h1:crn/baboCvb5fXaQ0IJ1SGTsTVrWpDsCWC8EGETZijY=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-containerregistry v0.0.0-20190617215043-876b8855d23c/go.mod h1:yZAFP63pRshzrEYLXLGPmUt0Ay+2zdjmMN1loCnRLUk=
@@ -65,245 +30,123 @@ github.com/google/gofuzz v0.0.0-20161122191042-44d81051d367/go.mod h1:HP5RmnzzSN
 github.com/google/gofuzz v1.0.0 h1:A8PeW59pxE9IoFRqBp37U+mSNaQoZ46F1f0f863XSXw=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/uuid v1.0.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/googleapis/gnostic v0.0.0-20170426233943-68f4ded48ba9/go.mod h1:sJBsCZ4ayReDTBIg8b9dl28c5xFWyhBTVRp3pOg5EKY=
-github.com/googleapis/gnostic v0.0.0-20170729233727-0c5108395e2d/go.mod h1:sJBsCZ4ayReDTBIg8b9dl28c5xFWyhBTVRp3pOg5EKY=
 github.com/googleapis/gnostic v0.2.0 h1:l6N3VoaVzTncYYW+9yOz2LJJammFZGBO13sqgEhpy9g=
 github.com/googleapis/gnostic v0.2.0/go.mod h1:sJBsCZ4ayReDTBIg8b9dl28c5xFWyhBTVRp3pOg5EKY=
-github.com/gophercloud/gophercloud v0.1.0/go.mod h1:vxM41WHh5uqHVBMZHzuwNOHh8XEoIEcSTewFxm1c5g8=
 github.com/gorilla/mux v1.7.3 h1:gnP5JzjVOuiZD07fKKToCAOjS0yOpj/qPETTXCCS6hw=
 github.com/gorilla/mux v1.7.3/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
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vendor/github.com/mxk/go-flowrate/LICENSE

@@ -0,0 +1,29 @@
+Copyright (c) 2014 The Go-FlowRate Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the
+   distribution.
+
+ * Neither the name of the go-flowrate project nor the names of its
+   contributors may be used to endorse or promote products derived
+   from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/mxk/go-flowrate/flowrate/flowrate.go

@@ -0,0 +1,267 @@
+//
+// Written by Maxim Khitrov (November 2012)
+//
+
+// Package flowrate provides the tools for monitoring and limiting the flow rate
+// of an arbitrary data stream.
+package flowrate
+
+import (
+	"math"
+	"sync"
+	"time"
+)
+
+// Monitor monitors and limits the transfer rate of a data stream.
+type Monitor struct {
+	mu      sync.Mutex    // Mutex guarding access to all internal fields
+	active  bool          // Flag indicating an active transfer
+	start   time.Duration // Transfer start time (clock() value)
+	bytes   int64         // Total number of bytes transferred
+	samples int64         // Total number of samples taken
+
+	rSample float64 // Most recent transfer rate sample (bytes per second)
+	rEMA    float64 // Exponential moving average of rSample
+	rPeak   float64 // Peak transfer rate (max of all rSamples)
+	rWindow float64 // rEMA window (seconds)
+
+	sBytes int64         // Number of bytes transferred since sLast
+	sLast  time.Duration // Most recent sample time (stop time when inactive)
+	sRate  time.Duration // Sampling rate
+
+	tBytes int64         // Number of bytes expected in the current transfer
+	tLast  time.Duration // Time of the most recent transfer of at least 1 byte
+}
+
+// New creates a new flow control monitor. Instantaneous transfer rate is
+// measured and updated for each sampleRate interval. windowSize determines the
+// weight of each sample in the exponential moving average (EMA) calculation.
+// The exact formulas are:
+//
+// 	sampleTime = currentTime - prevSampleTime
+// 	sampleRate = byteCount / sampleTime
+// 	weight     = 1 - exp(-sampleTime/windowSize)
+// 	newRate    = weight*sampleRate + (1-weight)*oldRate
+//
+// The default values for sampleRate and windowSize (if <= 0) are 100ms and 1s,
+// respectively.
+func New(sampleRate, windowSize time.Duration) *Monitor {
+	if sampleRate = clockRound(sampleRate); sampleRate <= 0 {
+		sampleRate = 5 * clockRate
+	}
+	if windowSize <= 0 {
+		windowSize = 1 * time.Second
+	}
+	now := clock()
+	return &Monitor{
+		active:  true,
+		start:   now,
+		rWindow: windowSize.Seconds(),
+		sLast:   now,
+		sRate:   sampleRate,
+		tLast:   now,
+	}
+}
+
+// Update records the transfer of n bytes and returns n. It should be called
+// after each Read/Write operation, even if n is 0.
+func (m *Monitor) Update(n int) int {
+	m.mu.Lock()
+	m.update(n)
+	m.mu.Unlock()
+	return n
+}
+
+// IO is a convenience method intended to wrap io.Reader and io.Writer method
+// execution. It calls m.Update(n) and then returns (n, err) unmodified.
+func (m *Monitor) IO(n int, err error) (int, error) {
+	return m.Update(n), err
+}
+
+// Done marks the transfer as finished and prevents any further updates or
+// limiting. Instantaneous and current transfer rates drop to 0. Update, IO, and
+// Limit methods become NOOPs. It returns the total number of bytes transferred.
+func (m *Monitor) Done() int64 {
+	m.mu.Lock()
+	if now := m.update(0); m.sBytes > 0 {
+		m.reset(now)
+	}
+	m.active = false
+	m.tLast = 0
+	n := m.bytes
+	m.mu.Unlock()
+	return n
+}
+
+// timeRemLimit is the maximum Status.TimeRem value.
+const timeRemLimit = 999*time.Hour + 59*time.Minute + 59*time.Second
+
+// Status represents the current Monitor status. All transfer rates are in bytes
+// per second rounded to the nearest byte.
+type Status struct {
+	Active   bool          // Flag indicating an active transfer
+	Start    time.Time     // Transfer start time
+	Duration time.Duration // Time period covered by the statistics
+	Idle     time.Duration // Time since the last transfer of at least 1 byte
+	Bytes    int64         // Total number of bytes transferred
+	Samples  int64         // Total number of samples taken
+	InstRate int64         // Instantaneous transfer rate
+	CurRate  int64         // Current transfer rate (EMA of InstRate)
+	AvgRate  int64         // Average transfer rate (Bytes / Duration)
+	PeakRate int64         // Maximum instantaneous transfer rate
+	BytesRem int64         // Number of bytes remaining in the transfer
+	TimeRem  time.Duration // Estimated time to completion
+	Progress Percent       // Overall transfer progress
+}
+
+// Status returns current transfer status information. The returned value
+// becomes static after a call to Done.
+func (m *Monitor) Status() Status {
+	m.mu.Lock()
+	now := m.update(0)
+	s := Status{
+		Active:   m.active,
+		Start:    clockToTime(m.start),
+		Duration: m.sLast - m.start,
+		Idle:     now - m.tLast,
+		Bytes:    m.bytes,
+		Samples:  m.samples,
+		PeakRate: round(m.rPeak),
+		BytesRem: m.tBytes - m.bytes,
+		Progress: percentOf(float64(m.bytes), float64(m.tBytes)),
+	}
+	if s.BytesRem < 0 {
+		s.BytesRem = 0
+	}
+	if s.Duration > 0 {
+		rAvg := float64(s.Bytes) / s.Duration.Seconds()
+		s.AvgRate = round(rAvg)
+		if s.Active {
+			s.InstRate = round(m.rSample)
+			s.CurRate = round(m.rEMA)
+			if s.BytesRem > 0 {
+				if tRate := 0.8*m.rEMA + 0.2*rAvg; tRate > 0 {
+					ns := float64(s.BytesRem) / tRate * 1e9
+					if ns > float64(timeRemLimit) {
+						ns = float64(timeRemLimit)
+					}
+					s.TimeRem = clockRound(time.Duration(ns))
+				}
+			}
+		}
+	}
+	m.mu.Unlock()
+	return s
+}
+
+// Limit restricts the instantaneous (per-sample) data flow to rate bytes per
+// second. It returns the maximum number of bytes (0 <= n <= want) that may be
+// transferred immediately without exceeding the limit. If block == true, the
+// call blocks until n > 0. want is returned unmodified if want < 1, rate < 1,
+// or the transfer is inactive (after a call to Done).
+//
+// At least one byte is always allowed to be transferred in any given sampling
+// period. Thus, if the sampling rate is 100ms, the lowest achievable flow rate
+// is 10 bytes per second.
+//
+// For usage examples, see the implementation of Reader and Writer in io.go.
+func (m *Monitor) Limit(want int, rate int64, block bool) (n int) {
+	if want < 1 || rate < 1 {
+		return want
+	}
+	m.mu.Lock()
+
+	// Determine the maximum number of bytes that can be sent in one sample
+	limit := round(float64(rate) * m.sRate.Seconds())
+	if limit <= 0 {
+		limit = 1
+	}
+
+	// If block == true, wait until m.sBytes < limit
+	if now := m.update(0); block {
+		for m.sBytes >= limit && m.active {
+			now = m.waitNextSample(now)
+		}
+	}
+
+	// Make limit <= want (unlimited if the transfer is no longer active)
+	if limit -= m.sBytes; limit > int64(want) || !m.active {
+		limit = int64(want)
+	}
+	m.mu.Unlock()
+
+	if limit < 0 {
+		limit = 0
+	}
+	return int(limit)
+}
+
+// SetTransferSize specifies the total size of the data transfer, which allows
+// the Monitor to calculate the overall progress and time to completion.
+func (m *Monitor) SetTransferSize(bytes int64) {
+	if bytes < 0 {
+		bytes = 0
+	}
+	m.mu.Lock()
+	m.tBytes = bytes
+	m.mu.Unlock()
+}
+
+// update accumulates the transferred byte count for the current sample until
+// clock() - m.sLast >= m.sRate. The monitor status is updated once the current
+// sample is done.
+func (m *Monitor) update(n int) (now time.Duration) {
+	if !m.active {
+		return
+	}
+	if now = clock(); n > 0 {
+		m.tLast = now
+	}
+	m.sBytes += int64(n)
+	if sTime := now - m.sLast; sTime >= m.sRate {
+		t := sTime.Seconds()
+		if m.rSample = float64(m.sBytes) / t; m.rSample > m.rPeak {
+			m.rPeak = m.rSample
+		}
+
+		// Exponential moving average using a method similar to *nix load
+		// average calculation. Longer sampling periods carry greater weight.
+		if m.samples > 0 {
+			w := math.Exp(-t / m.rWindow)
+			m.rEMA = m.rSample + w*(m.rEMA-m.rSample)
+		} else {
+			m.rEMA = m.rSample
+		}
+		m.reset(now)
+	}
+	return
+}
+
+// reset clears the current sample state in preparation for the next sample.
+func (m *Monitor) reset(sampleTime time.Duration) {
+	m.bytes += m.sBytes
+	m.samples++
+	m.sBytes = 0
+	m.sLast = sampleTime
+}
+
+// waitNextSample sleeps for the remainder of the current sample. The lock is
+// released and reacquired during the actual sleep period, so it's possible for
+// the transfer to be inactive when this method returns.
+func (m *Monitor) waitNextSample(now time.Duration) time.Duration {
+	const minWait = 5 * time.Millisecond
+	current := m.sLast
+
+	// sleep until the last sample time changes (ideally, just one iteration)
+	for m.sLast == current && m.active {
+		d := current + m.sRate - now
+		m.mu.Unlock()
+		if d < minWait {
+			d = minWait
+		}
+		time.Sleep(d)
+		m.mu.Lock()
+		now = m.update(0)
+	}
+	return now
+}

vendor/github.com/mxk/go-flowrate/flowrate/io.go

@@ -0,0 +1,133 @@
+//
+// Written by Maxim Khitrov (November 2012)
+//
+
+package flowrate
+
+import (
+	"errors"
+	"io"
+)
+
+// ErrLimit is returned by the Writer when a non-blocking write is short due to
+// the transfer rate limit.
+var ErrLimit = errors.New("flowrate: flow rate limit exceeded")
+
+// Limiter is implemented by the Reader and Writer to provide a consistent
+// interface for monitoring and controlling data transfer.
+type Limiter interface {
+	Done() int64
+	Status() Status
+	SetTransferSize(bytes int64)
+	SetLimit(new int64) (old int64)
+	SetBlocking(new bool) (old bool)
+}
+
+// Reader implements io.ReadCloser with a restriction on the rate of data
+// transfer.
+type Reader struct {
+	io.Reader // Data source
+	*Monitor  // Flow control monitor
+
+	limit int64 // Rate limit in bytes per second (unlimited when <= 0)
+	block bool  // What to do when no new bytes can be read due to the limit
+}
+
+// NewReader restricts all Read operations on r to limit bytes per second.
+func NewReader(r io.Reader, limit int64) *Reader {
+	return &Reader{r, New(0, 0), limit, true}
+}
+
+// Read reads up to len(p) bytes into p without exceeding the current transfer
+// rate limit. It returns (0, nil) immediately if r is non-blocking and no new
+// bytes can be read at this time.
+func (r *Reader) Read(p []byte) (n int, err error) {
+	p = p[:r.Limit(len(p), r.limit, r.block)]
+	if len(p) > 0 {
+		n, err = r.IO(r.Reader.Read(p))
+	}
+	return
+}
+
+// SetLimit changes the transfer rate limit to new bytes per second and returns
+// the previous setting.
+func (r *Reader) SetLimit(new int64) (old int64) {
+	old, r.limit = r.limit, new
+	return
+}
+
+// SetBlocking changes the blocking behavior and returns the previous setting. A
+// Read call on a non-blocking reader returns immediately if no additional bytes
+// may be read at this time due to the rate limit.
+func (r *Reader) SetBlocking(new bool) (old bool) {
+	old, r.block = r.block, new
+	return
+}
+
+// Close closes the underlying reader if it implements the io.Closer interface.
+func (r *Reader) Close() error {
+	defer r.Done()
+	if c, ok := r.Reader.(io.Closer); ok {
+		return c.Close()
+	}
+	return nil
+}
+
+// Writer implements io.WriteCloser with a restriction on the rate of data
+// transfer.
+type Writer struct {
+	io.Writer // Data destination
+	*Monitor  // Flow control monitor
+
+	limit int64 // Rate limit in bytes per second (unlimited when <= 0)
+	block bool  // What to do when no new bytes can be written due to the limit
+}
+
+// NewWriter restricts all Write operations on w to limit bytes per second. The
+// transfer rate and the default blocking behavior (true) can be changed
+// directly on the returned *Writer.
+func NewWriter(w io.Writer, limit int64) *Writer {
+	return &Writer{w, New(0, 0), limit, true}
+}
+
+// Write writes len(p) bytes from p to the underlying data stream without
+// exceeding the current transfer rate limit. It returns (n, ErrLimit) if w is
+// non-blocking and no additional bytes can be written at this time.
+func (w *Writer) Write(p []byte) (n int, err error) {
+	var c int
+	for len(p) > 0 && err == nil {
+		s := p[:w.Limit(len(p), w.limit, w.block)]
+		if len(s) > 0 {
+			c, err = w.IO(w.Writer.Write(s))
+		} else {
+			return n, ErrLimit
+		}
+		p = p[c:]
+		n += c
+	}
+	return
+}
+
+// SetLimit changes the transfer rate limit to new bytes per second and returns
+// the previous setting.
+func (w *Writer) SetLimit(new int64) (old int64) {
+	old, w.limit = w.limit, new
+	return
+}
+
+// SetBlocking changes the blocking behavior and returns the previous setting. A
+// Write call on a non-blocking writer returns as soon as no additional bytes
+// may be written at this time due to the rate limit.
+func (w *Writer) SetBlocking(new bool) (old bool) {
+	old, w.block = w.block, new
+	return
+}
+
+// Close closes the underlying writer if it implements the io.Closer interface.
+func (w *Writer) Close() error {
+	defer w.Done()
+	if c, ok := w.Writer.(io.Closer); ok {
+		return c.Close()
+	}
+	return nil
+}

vendor/github.com/mxk/go-flowrate/flowrate/util.go

@@ -0,0 +1,67 @@
+//
+// Written by Maxim Khitrov (November 2012)
+//
+
+package flowrate
+
+import (
+	"math"
+	"strconv"
+	"time"
+)
+
+// clockRate is the resolution and precision of clock().
+const clockRate = 20 * time.Millisecond
+
+// czero is the process start time rounded down to the nearest clockRate
+// increment.
+var czero = time.Duration(time.Now().UnixNano()) / clockRate * clockRate
+
+// clock returns a low resolution timestamp relative to the process start time.
+func clock() time.Duration {
+	return time.Duration(time.Now().UnixNano())/clockRate*clockRate - czero
+}
+
+// clockToTime converts a clock() timestamp to an absolute time.Time value.
+func clockToTime(c time.Duration) time.Time {
+	return time.Unix(0, int64(czero+c))
+}
+
+// clockRound returns d rounded to the nearest clockRate increment.
+func clockRound(d time.Duration) time.Duration {
+	return (d + clockRate>>1) / clockRate * clockRate
+}
+
+// round returns x rounded to the nearest int64 (non-negative values only).
+func round(x float64) int64 {
+	if _, frac := math.Modf(x); frac >= 0.5 {
+		return int64(math.Ceil(x))
+	}
+	return int64(math.Floor(x))
+}
+
+// Percent represents a percentage in increments of 1/1000th of a percent.
+type Percent uint32
+
+// percentOf calculates what percent of the total is x.
+func percentOf(x, total float64) Percent {
+	if x < 0 || total <= 0 {
+		return 0
+	} else if p := round(x / total * 1e5); p <= math.MaxUint32 {
+		return Percent(p)
+	}
+	return Percent(math.MaxUint32)
+}
+
+func (p Percent) Float() float64 {
+	return float64(p) * 1e-3
+}
+
+func (p Percent) String() string {
+	var buf [12]byte
+	b := strconv.AppendUint(buf[:0], uint64(p)/1000, 10)
+	n := len(b)
+	b = strconv.AppendUint(b, 1000+uint64(p)%1000, 10)
+	b[n] = '.'
+	return string(append(b, '%'))
+}

vendor/github.com/rancher/norman/pkg/types/mapper.go

@@ -90,10 +90,6 @@ func (t *typeMapper) FromInternal(data map[string]interface{}) {
 		}
 	}
 
-	if _, ok := data["type"]; !ok && data != nil {
-		data["type"] = t.typeName
-	}
-
 	Mappers(t.Mappers).FromInternal(data)
 }
 

vendor/golang.org/x/net/html/atom/atom.go

@@ -0,0 +1,78 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package atom provides integer codes (also known as atoms) for a fixed set of
+// frequently occurring HTML strings: tag names and attribute keys such as "p"
+// and "id".
+//
+// Sharing an atom's name between all elements with the same tag can result in
+// fewer string allocations when tokenizing and parsing HTML. Integer
+// comparisons are also generally faster than string comparisons.
+//
+// The value of an atom's particular code is not guaranteed to stay the same
+// between versions of this package. Neither is any ordering guaranteed:
+// whether atom.H1 < atom.H2 may also change. The codes are not guaranteed to
+// be dense. The only guarantees are that e.g. looking up "div" will yield
+// atom.Div, calling atom.Div.String will return "div", and atom.Div != 0.
+package atom // import "golang.org/x/net/html/atom"
+
+// Atom is an integer code for a string. The zero value maps to "".
+type Atom uint32
+
+// String returns the atom's name.
+func (a Atom) String() string {
+	start := uint32(a >> 8)
+	n := uint32(a & 0xff)
+	if start+n > uint32(len(atomText)) {
+		return ""
+	}
+	return atomText[start : start+n]
+}
+
+func (a Atom) string() string {
+	return atomText[a>>8 : a>>8+a&0xff]
+}
+
+// fnv computes the FNV hash with an arbitrary starting value h.
+func fnv(h uint32, s []byte) uint32 {
+	for i := range s {
+		h ^= uint32(s[i])
+		h *= 16777619
+	}
+	return h
+}
+
+func match(s string, t []byte) bool {
+	for i, c := range t {
+		if s[i] != c {
+			return false
+		}
+	}
+	return true
+}
+
+// Lookup returns the atom whose name is s. It returns zero if there is no
+// such atom. The lookup is case sensitive.
+func Lookup(s []byte) Atom {
+	if len(s) == 0 || len(s) > maxAtomLen {
+		return 0
+	}
+	h := fnv(hash0, s)
+	if a := table[h&uint32(len(table)-1)]; int(a&0xff) == len(s) && match(a.string(), s) {
+		return a
+	}
+	if a := table[(h>>16)&uint32(len(table)-1)]; int(a&0xff) == len(s) && match(a.string(), s) {
+		return a
+	}
+	return 0
+}
+
+// String returns a string whose contents are equal to s. In that sense, it is
+// equivalent to string(s) but may be more efficient.
+func String(s []byte) string {
+	if a := Lookup(s); a != 0 {
+		return a.String()
+	}
+	return string(s)
+}

vendor/golang.org/x/net/html/atom/gen.go

@@ -0,0 +1,712 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+//go:generate go run gen.go
+//go:generate go run gen.go -test
+
+package main
+
+import (
+	"bytes"
+	"flag"
+	"fmt"
+	"go/format"
+	"io/ioutil"
+	"math/rand"
+	"os"
+	"sort"
+	"strings"
+)
+
+// identifier converts s to a Go exported identifier.
+// It converts "div" to "Div" and "accept-charset" to "AcceptCharset".
+func identifier(s string) string {
+	b := make([]byte, 0, len(s))
+	cap := true
+	for _, c := range s {
+		if c == '-' {
+			cap = true
+			continue
+		}
+		if cap && 'a' <= c && c <= 'z' {
+			c -= 'a' - 'A'
+		}
+		cap = false
+		b = append(b, byte(c))
+	}
+	return string(b)
+}
+
+var test = flag.Bool("test", false, "generate table_test.go")
+
+func genFile(name string, buf *bytes.Buffer) {
+	b, err := format.Source(buf.Bytes())
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+	if err := ioutil.WriteFile(name, b, 0644); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}
+
+func main() {
+	flag.Parse()
+
+	var all []string
+	all = append(all, elements...)
+	all = append(all, attributes...)
+	all = append(all, eventHandlers...)
+	all = append(all, extra...)
+	sort.Strings(all)
+
+	// uniq - lists have dups
+	w := 0
+	for _, s := range all {
+		if w == 0 || all[w-1] != s {
+			all[w] = s
+			w++
+		}
+	}
+	all = all[:w]
+
+	if *test {
+		var buf bytes.Buffer
+		fmt.Fprintln(&buf, "// Code generated by go generate gen.go; DO NOT EDIT.\n")
+		fmt.Fprintln(&buf, "//go:generate go run gen.go -test\n")
+		fmt.Fprintln(&buf, "package atom\n")
+		fmt.Fprintln(&buf, "var testAtomList = []string{")
+		for _, s := range all {
+			fmt.Fprintf(&buf, "\t%q,\n", s)
+		}
+		fmt.Fprintln(&buf, "}")
+
+		genFile("table_test.go", &buf)
+		return
+	}
+
+	// Find hash that minimizes table size.
+	var best *table
+	for i := 0; i < 1000000; i++ {
+		if best != nil && 1<<(best.k-1) < len(all) {
+			break
+		}
+		h := rand.Uint32()
+		for k := uint(0); k <= 16; k++ {
+			if best != nil && k >= best.k {
+				break
+			}
+			var t table
+			if t.init(h, k, all) {
+				best = &t
+				break
+			}
+		}
+	}
+	if best == nil {
+		fmt.Fprintf(os.Stderr, "failed to construct string table\n")
+		os.Exit(1)
+	}
+
+	// Lay out strings, using overlaps when possible.
+	layout := append([]string{}, all...)
+
+	// Remove strings that are substrings of other strings
+	for changed := true; changed; {
+		changed = false
+		for i, s := range layout {
+			if s == "" {
+				continue
+			}
+			for j, t := range layout {
+				if i != j && t != "" && strings.Contains(s, t) {
+					changed = true
+					layout[j] = ""
+				}
+			}
+		}
+	}
+
+	// Join strings where one suffix matches another prefix.
+	for {
+		// Find best i, j, k such that layout[i][len-k:] == layout[j][:k],
+		// maximizing overlap length k.
+		besti := -1
+		bestj := -1
+		bestk := 0
+		for i, s := range layout {
+			if s == "" {
+				continue
+			}
+			for j, t := range layout {
+				if i == j {
+					continue
+				}
+				for k := bestk + 1; k <= len(s) && k <= len(t); k++ {
+					if s[len(s)-k:] == t[:k] {
+						besti = i
+						bestj = j
+						bestk = k
+					}
+				}
+			}
+		}
+		if bestk > 0 {
+			layout[besti] += layout[bestj][bestk:]
+			layout[bestj] = ""
+			continue
+		}
+		break
+	}
+
+	text := strings.Join(layout, "")
+
+	atom := map[string]uint32{}
+	for _, s := range all {
+		off := strings.Index(text, s)
+		if off < 0 {
+			panic("lost string " + s)
+		}
+		atom[s] = uint32(off<<8 | len(s))
+	}
+
+	var buf bytes.Buffer
+	// Generate the Go code.
+	fmt.Fprintln(&buf, "// Code generated by go generate gen.go; DO NOT EDIT.\n")
+	fmt.Fprintln(&buf, "//go:generate go run gen.go\n")
+	fmt.Fprintln(&buf, "package atom\n\nconst (")
+
+	// compute max len
+	maxLen := 0
+	for _, s := range all {
+		if maxLen < len(s) {
+			maxLen = len(s)
+		}
+		fmt.Fprintf(&buf, "\t%s Atom = %#x\n", identifier(s), atom[s])
+	}
+	fmt.Fprintln(&buf, ")\n")
+
+	fmt.Fprintf(&buf, "const hash0 = %#x\n\n", best.h0)
+	fmt.Fprintf(&buf, "const maxAtomLen = %d\n\n", maxLen)
+
+	fmt.Fprintf(&buf, "var table = [1<<%d]Atom{\n", best.k)
+	for i, s := range best.tab {
+		if s == "" {
+			continue
+		}
+		fmt.Fprintf(&buf, "\t%#x: %#x, // %s\n", i, atom[s], s)
+	}
+	fmt.Fprintf(&buf, "}\n")
+	datasize := (1 << best.k) * 4
+
+	fmt.Fprintln(&buf, "const atomText =")
+	textsize := len(text)
+	for len(text) > 60 {
+		fmt.Fprintf(&buf, "\t%q +\n", text[:60])
+		text = text[60:]
+	}
+	fmt.Fprintf(&buf, "\t%q\n\n", text)
+
+	genFile("table.go", &buf)
+
+	fmt.Fprintf(os.Stdout, "%d atoms; %d string bytes + %d tables = %d total data\n", len(all), textsize, datasize, textsize+datasize)
+}
+
+type byLen []string
+
+func (x byLen) Less(i, j int) bool { return len(x[i]) > len(x[j]) }
+func (x byLen) Swap(i, j int)      { x[i], x[j] = x[j], x[i] }
+func (x byLen) Len() int           { return len(x) }
+
+// fnv computes the FNV hash with an arbitrary starting value h.
+func fnv(h uint32, s string) uint32 {
+	for i := 0; i < len(s); i++ {
+		h ^= uint32(s[i])
+		h *= 16777619
+	}
+	return h
+}
+
+// A table represents an attempt at constructing the lookup table.
+// The lookup table uses cuckoo hashing, meaning that each string
+// can be found in one of two positions.
+type table struct {
+	h0   uint32
+	k    uint
+	mask uint32
+	tab  []string
+}
+
+// hash returns the two hashes for s.
+func (t *table) hash(s string) (h1, h2 uint32) {
+	h := fnv(t.h0, s)
+	h1 = h & t.mask
+	h2 = (h >> 16) & t.mask
+	return
+}
+
+// init initializes the table with the given parameters.
+// h0 is the initial hash value,
+// k is the number of bits of hash value to use, and
+// x is the list of strings to store in the table.
+// init returns false if the table cannot be constructed.
+func (t *table) init(h0 uint32, k uint, x []string) bool {
+	t.h0 = h0
+	t.k = k
+	t.tab = make([]string, 1<<k)
+	t.mask = 1<<k - 1
+	for _, s := range x {
+		if !t.insert(s) {
+			return false
+		}
+	}
+	return true
+}
+
+// insert inserts s in the table.
+func (t *table) insert(s string) bool {
+	h1, h2 := t.hash(s)
+	if t.tab[h1] == "" {
+		t.tab[h1] = s
+		return true
+	}
+	if t.tab[h2] == "" {
+		t.tab[h2] = s
+		return true
+	}
+	if t.push(h1, 0) {
+		t.tab[h1] = s
+		return true
+	}
+	if t.push(h2, 0) {
+		t.tab[h2] = s
+		return true
+	}
+	return false
+}
+
+// push attempts to push aside the entry in slot i.
+func (t *table) push(i uint32, depth int) bool {
+	if depth > len(t.tab) {
+		return false
+	}
+	s := t.tab[i]
+	h1, h2 := t.hash(s)
+	j := h1 + h2 - i
+	if t.tab[j] != "" && !t.push(j, depth+1) {
+		return false
+	}
+	t.tab[j] = s
+	return true
+}
+
+// The lists of element names and attribute keys were taken from
+// https://html.spec.whatwg.org/multipage/indices.html#index
+// as of the "HTML Living Standard - Last Updated 16 April 2018" version.
+
+// "command", "keygen" and "menuitem" have been removed from the spec,
+// but are kept here for backwards compatibility.
+var elements = []string{
+	"a",
+	"abbr",
+	"address",
+	"area",
+	"article",
+	"aside",
+	"audio",
+	"b",
+	"base",
+	"bdi",
+	"bdo",
+	"blockquote",
+	"body",
+	"br",
+	"button",
+	"canvas",
+	"caption",
+	"cite",
+	"code",
+	"col",
+	"colgroup",
+	"command",
+	"data",
+	"datalist",
+	"dd",
+	"del",
+	"details",
+	"dfn",
+	"dialog",
+	"div",
+	"dl",
+	"dt",
+	"em",
+	"embed",
+	"fieldset",
+	"figcaption",
+	"figure",
+	"footer",
+	"form",
+	"h1",
+	"h2",
+	"h3",
+	"h4",
+	"h5",
+	"h6",
+	"head",
+	"header",
+	"hgroup",
+	"hr",
+	"html",
+	"i",
+	"iframe",
+	"img",
+	"input",
+	"ins",
+	"kbd",
+	"keygen",
+	"label",
+	"legend",
+	"li",
+	"link",
+	"main",
+	"map",
+	"mark",
+	"menu",
+	"menuitem",
+	"meta",
+	"meter",
+	"nav",
+	"noscript",
+	"object",
+	"ol",
+	"optgroup",
+	"option",
+	"output",
+	"p",
+	"param",
+	"picture",
+	"pre",
+	"progress",
+	"q",
+	"rp",
+	"rt",
+	"ruby",
+	"s",
+	"samp",
+	"script",
+	"section",
+	"select",
+	"slot",
+	"small",
+	"source",
+	"span",
+	"strong",
+	"style",
+	"sub",
+	"summary",
+	"sup",
+	"table",
+	"tbody",
+	"td",
+	"template",
+	"textarea",
+	"tfoot",
+	"th",
+	"thead",
+	"time",
+	"title",
+	"tr",
+	"track",
+	"u",
+	"ul",
+	"var",
+	"video",
+	"wbr",
+}
+
+// https://html.spec.whatwg.org/multipage/indices.html#attributes-3
+//
+// "challenge", "command", "contextmenu", "dropzone", "icon", "keytype", "mediagroup",
+// "radiogroup", "spellcheck", "scoped", "seamless", "sortable" and "sorted" have been removed from the spec,
+// but are kept here for backwards compatibility.
+var attributes = []string{
+	"abbr",
+	"accept",
+	"accept-charset",
+	"accesskey",
+	"action",
+	"allowfullscreen",
+	"allowpaymentrequest",
+	"allowusermedia",
+	"alt",
+	"as",
+	"async",
+	"autocomplete",
+	"autofocus",
+	"autoplay",
+	"challenge",
+	"charset",
+	"checked",
+	"cite",
+	"class",
+	"color",
+	"cols",
+	"colspan",
+	"command",
+	"content",
+	"contenteditable",
+	"contextmenu",
+	"controls",
+	"coords",
+	"crossorigin",
+	"data",
+	"datetime",
+	"default",
+	"defer",
+	"dir",
+	"dirname",
+	"disabled",
+	"download",
+	"draggable",
+	"dropzone",
+	"enctype",
+	"for",
+	"form",
+	"formaction",
+	"formenctype",
+	"formmethod",
+	"formnovalidate",
+	"formtarget",
+	"headers",
+	"height",
+	"hidden",
+	"high",
+	"href",
+	"hreflang",
+	"http-equiv",
+	"icon",
+	"id",
+	"inputmode",
+	"integrity",
+	"is",
+	"ismap",
+	"itemid",
+	"itemprop",
+	"itemref",
+	"itemscope",
+	"itemtype",
+	"keytype",
+	"kind",
+	"label",
+	"lang",
+	"list",
+	"loop",
+	"low",
+	"manifest",
+	"max",
+	"maxlength",
+	"media",
+	"mediagroup",
+	"method",
+	"min",
+	"minlength",
+	"multiple",
+	"muted",
+	"name",
+	"nomodule",
+	"nonce",
+	"novalidate",
+	"open",
+	"optimum",
+	"pattern",
+	"ping",
+	"placeholder",
+	"playsinline",
+	"poster",
+	"preload",
+	"radiogroup",
+	"readonly",
+	"referrerpolicy",
+	"rel",
+	"required",
+	"reversed",
+	"rows",
+	"rowspan",
+	"sandbox",
+	"spellcheck",
+	"scope",
+	"scoped",
+	"seamless",
+	"selected",
+	"shape",
+	"size",
+	"sizes",
+	"sortable",
+	"sorted",
+	"slot",
+	"span",
+	"spellcheck",
+	"src",
+	"srcdoc",
+	"srclang",
+	"srcset",
+	"start",
+	"step",
+	"style",
+	"tabindex",
+	"target",
+	"title",
+	"translate",
+	"type",
+	"typemustmatch",
+	"updateviacache",
+	"usemap",
+	"value",
+	"width",
+	"workertype",
+	"wrap",
+}
+
+// "onautocomplete", "onautocompleteerror", "onmousewheel",
+// "onshow" and "onsort" have been removed from the spec,
+// but are kept here for backwards compatibility.
+var eventHandlers = []string{
+	"onabort",
+	"onautocomplete",
+	"onautocompleteerror",
+	"onauxclick",
+	"onafterprint",
+	"onbeforeprint",
+	"onbeforeunload",
+	"onblur",
+	"oncancel",
+	"oncanplay",
+	"oncanplaythrough",
+	"onchange",
+	"onclick",
+	"onclose",
+	"oncontextmenu",
+	"oncopy",
+	"oncuechange",
+	"oncut",
+	"ondblclick",
+	"ondrag",
+	"ondragend",
+	"ondragenter",
+	"ondragexit",
+	"ondragleave",
+	"ondragover",
+	"ondragstart",
+	"ondrop",
+	"ondurationchange",
+	"onemptied",
+	"onended",
+	"onerror",
+	"onfocus",
+	"onhashchange",
+	"oninput",
+	"oninvalid",
+	"onkeydown",
+	"onkeypress",
+	"onkeyup",
+	"onlanguagechange",
+	"onload",
+	"onloadeddata",
+	"onloadedmetadata",
+	"onloadend",
+	"onloadstart",
+	"onmessage",
+	"onmessageerror",
+	"onmousedown",
+	"onmouseenter",
+	"onmouseleave",
+	"onmousemove",
+	"onmouseout",
+	"onmouseover",
+	"onmouseup",
+	"onmousewheel",
+	"onwheel",
+	"onoffline",
+	"ononline",
+	"onpagehide",
+	"onpageshow",
+	"onpaste",
+	"onpause",
+	"onplay",
+	"onplaying",
+	"onpopstate",
+	"onprogress",
+	"onratechange",
+	"onreset",
+	"onresize",
+	"onrejectionhandled",
+	"onscroll",
+	"onsecuritypolicyviolation",
+	"onseeked",
+	"onseeking",
+	"onselect",
+	"onshow",
+	"onsort",
+	"onstalled",
+	"onstorage",
+	"onsubmit",
+	"onsuspend",
+	"ontimeupdate",
+	"ontoggle",
+	"onunhandledrejection",
+	"onunload",
+	"onvolumechange",
+	"onwaiting",
+}
+
+// extra are ad-hoc values not covered by any of the lists above.
+var extra = []string{
+	"acronym",
+	"align",
+	"annotation",
+	"annotation-xml",
+	"applet",
+	"basefont",
+	"bgsound",
+	"big",
+	"blink",
+	"center",
+	"color",
+	"desc",
+	"face",
+	"font",
+	"foreignObject", // HTML is case-insensitive, but SVG-embedded-in-HTML is case-sensitive.
+	"foreignobject",
+	"frame",
+	"frameset",
+	"image",
+	"isindex",
+	"listing",
+	"malignmark",
+	"marquee",
+	"math",
+	"mglyph",
+	"mi",
+	"mn",
+	"mo",
+	"ms",
+	"mtext",
+	"nobr",
+	"noembed",
+	"noframes",
+	"plaintext",
+	"prompt",
+	"public",
+	"rb",
+	"rtc",
+	"spacer",
+	"strike",
+	"svg",
+	"system",
+	"tt",
+	"xmp",
+}

vendor/golang.org/x/net/html/atom/table.go

@@ -0,0 +1,783 @@
+// Code generated by go generate gen.go; DO NOT EDIT.
+
+//go:generate go run gen.go
+
+package atom
+
+const (
+	A                         Atom = 0x1
+	Abbr                      Atom = 0x4
+	Accept                    Atom = 0x1a06
+	AcceptCharset             Atom = 0x1a0e
+	Accesskey                 Atom = 0x2c09
+	Acronym                   Atom = 0xaa07
+	Action                    Atom = 0x27206
+	Address                   Atom = 0x6f307
+	Align                     Atom = 0xb105
+	Allowfullscreen           Atom = 0x2080f
+	Allowpaymentrequest       Atom = 0xc113
+	Allowusermedia            Atom = 0xdd0e
+	Alt                       Atom = 0xf303
+	Annotation                Atom = 0x1c90a
+	AnnotationXml             Atom = 0x1c90e
+	Applet                    Atom = 0x31906
+	Area                      Atom = 0x35604
+	Article                   Atom = 0x3fc07
+	As                        Atom = 0x3c02
+	Aside                     Atom = 0x10705
+	Async                     Atom = 0xff05
+	Audio                     Atom = 0x11505
+	Autocomplete              Atom = 0x2780c
+	Autofocus                 Atom = 0x12109
+	Autoplay                  Atom = 0x13c08
+	B                         Atom = 0x101
+	Base                      Atom = 0x3b04
+	Basefont                  Atom = 0x3b08
+	Bdi                       Atom = 0xba03
+	Bdo                       Atom = 0x14b03
+	Bgsound                   Atom = 0x15e07
+	Big                       Atom = 0x17003
+	Blink                     Atom = 0x17305
+	Blockquote                Atom = 0x1870a
+	Body                      Atom = 0x2804
+	Br                        Atom = 0x202
+	Button                    Atom = 0x19106
+	Canvas                    Atom = 0x10306
+	Caption                   Atom = 0x23107
+	Center                    Atom = 0x22006
+	Challenge                 Atom = 0x29b09
+	Charset                   Atom = 0x2107
+	Checked                   Atom = 0x47907
+	Cite                      Atom = 0x19c04
+	Class                     Atom = 0x56405
+	Code                      Atom = 0x5c504
+	Col                       Atom = 0x1ab03
+	Colgroup                  Atom = 0x1ab08
+	Color                     Atom = 0x1bf05
+	Cols                      Atom = 0x1c404
+	Colspan                   Atom = 0x1c407
+	Command                   Atom = 0x1d707
+	Content                   Atom = 0x58b07
+	Contenteditable           Atom = 0x58b0f
+	Contextmenu               Atom = 0x3800b
+	Controls                  Atom = 0x1de08
+	Coords                    Atom = 0x1ea06
+	Crossorigin               Atom = 0x1fb0b
+	Data                      Atom = 0x4a504
+	Datalist                  Atom = 0x4a508
+	Datetime                  Atom = 0x2b808
+	Dd                        Atom = 0x2d702
+	Default                   Atom = 0x10a07
+	Defer                     Atom = 0x5c705
+	Del                       Atom = 0x45203
+	Desc                      Atom = 0x56104
+	Details                   Atom = 0x7207
+	Dfn                       Atom = 0x8703
+	Dialog                    Atom = 0xbb06
+	Dir                       Atom = 0x9303
+	Dirname                   Atom = 0x9307
+	Disabled                  Atom = 0x16408
+	Div                       Atom = 0x16b03
+	Dl                        Atom = 0x5e602
+	Download                  Atom = 0x46308
+	Draggable                 Atom = 0x17a09
+	Dropzone                  Atom = 0x40508
+	Dt                        Atom = 0x64b02
+	Em                        Atom = 0x6e02
+	Embed                     Atom = 0x6e05
+	Enctype                   Atom = 0x28d07
+	Face                      Atom = 0x21e04
+	Fieldset                  Atom = 0x22608
+	Figcaption                Atom = 0x22e0a
+	Figure                    Atom = 0x24806
+	Font                      Atom = 0x3f04
+	Footer                    Atom = 0xf606
+	For                       Atom = 0x25403
+	ForeignObject             Atom = 0x2540d
+	Foreignobject             Atom = 0x2610d
+	Form                      Atom = 0x26e04
+	Formaction                Atom = 0x26e0a
+	Formenctype               Atom = 0x2890b
+	Formmethod                Atom = 0x2a40a
+	Formnovalidate            Atom = 0x2ae0e
+	Formtarget                Atom = 0x2c00a
+	Frame                     Atom = 0x8b05
+	Frameset                  Atom = 0x8b08
+	H1                        Atom = 0x15c02
+	H2                        Atom = 0x2de02
+	H3                        Atom = 0x30d02
+	H4                        Atom = 0x34502
+	H5                        Atom = 0x34f02
+	H6                        Atom = 0x64d02
+	Head                      Atom = 0x33104
+	Header                    Atom = 0x33106
+	Headers                   Atom = 0x33107
+	Height                    Atom = 0x5206
+	Hgroup                    Atom = 0x2ca06
+	Hidden                    Atom = 0x2d506
+	High                      Atom = 0x2db04
+	Hr                        Atom = 0x15702
+	Href                      Atom = 0x2e004
+	Hreflang                  Atom = 0x2e008
+	Html                      Atom = 0x5604
+	HttpEquiv                 Atom = 0x2e80a
+	I                         Atom = 0x601
+	Icon                      Atom = 0x58a04
+	Id                        Atom = 0x10902
+	Iframe                    Atom = 0x2fc06
+	Image                     Atom = 0x30205
+	Img                       Atom = 0x30703
+	Input                     Atom = 0x44b05
+	Inputmode                 Atom = 0x44b09
+	Ins                       Atom = 0x20403
+	Integrity                 Atom = 0x23f09
+	Is                        Atom = 0x16502
+	Isindex                   Atom = 0x30f07
+	Ismap                     Atom = 0x31605
+	Itemid                    Atom = 0x38b06
+	Itemprop                  Atom = 0x19d08
+	Itemref                   Atom = 0x3cd07
+	Itemscope                 Atom = 0x67109
+	Itemtype                  Atom = 0x31f08
+	Kbd                       Atom = 0xb903
+	Keygen                    Atom = 0x3206
+	Keytype                   Atom = 0xd607
+	Kind                      Atom = 0x17704
+	Label                     Atom = 0x5905
+	Lang                      Atom = 0x2e404
+	Legend                    Atom = 0x18106
+	Li                        Atom = 0xb202
+	Link                      Atom = 0x17404
+	List                      Atom = 0x4a904
+	Listing                   Atom = 0x4a907
+	Loop                      Atom = 0x5d04
+	Low                       Atom = 0xc303
+	Main                      Atom = 0x1004
+	Malignmark                Atom = 0xb00a
+	Manifest                  Atom = 0x6d708
+	Map                       Atom = 0x31803
+	Mark                      Atom = 0xb604
+	Marquee                   Atom = 0x32707
+	Math                      Atom = 0x32e04
+	Max                       Atom = 0x33d03
+	Maxlength                 Atom = 0x33d09
+	Media                     Atom = 0xe605
+	Mediagroup                Atom = 0xe60a
+	Menu                      Atom = 0x38704
+	Menuitem                  Atom = 0x38708
+	Meta                      Atom = 0x4b804
+	Meter                     Atom = 0x9805
+	Method                    Atom = 0x2a806
+	Mglyph                    Atom = 0x30806
+	Mi                        Atom = 0x34702
+	Min                       Atom = 0x34703
+	Minlength                 Atom = 0x34709
+	Mn                        Atom = 0x2b102
+	Mo                        Atom = 0xa402
+	Ms                        Atom = 0x67402
+	Mtext                     Atom = 0x35105
+	Multiple                  Atom = 0x35f08
+	Muted                     Atom = 0x36705
+	Name                      Atom = 0x9604
+	Nav                       Atom = 0x1303
+	Nobr                      Atom = 0x3704
+	Noembed                   Atom = 0x6c07
+	Noframes                  Atom = 0x8908
+	Nomodule                  Atom = 0xa208
+	Nonce                     Atom = 0x1a605
+	Noscript                  Atom = 0x21608
+	Novalidate                Atom = 0x2b20a
+	Object                    Atom = 0x26806
+	Ol                        Atom = 0x13702
+	Onabort                   Atom = 0x19507
+	Onafterprint              Atom = 0x2360c
+	Onautocomplete            Atom = 0x2760e
+	Onautocompleteerror       Atom = 0x27613
+	Onauxclick                Atom = 0x61f0a
+	Onbeforeprint             Atom = 0x69e0d
+	Onbeforeunload            Atom = 0x6e70e
+	Onblur                    Atom = 0x56d06
+	Oncancel                  Atom = 0x11908
+	Oncanplay                 Atom = 0x14d09
+	Oncanplaythrough          Atom = 0x14d10
+	Onchange                  Atom = 0x41b08
+	Onclick                   Atom = 0x2f507
+	Onclose                   Atom = 0x36c07
+	Oncontextmenu             Atom = 0x37e0d
+	Oncopy                    Atom = 0x39106
+	Oncuechange               Atom = 0x3970b
+	Oncut                     Atom = 0x3a205
+	Ondblclick                Atom = 0x3a70a
+	Ondrag                    Atom = 0x3b106
+	Ondragend                 Atom = 0x3b109
+	Ondragenter               Atom = 0x3ba0b
+	Ondragexit                Atom = 0x3c50a
+	Ondragleave               Atom = 0x3df0b
+	Ondragover                Atom = 0x3ea0a
+	Ondragstart               Atom = 0x3f40b
+	Ondrop                    Atom = 0x40306
+	Ondurationchange          Atom = 0x41310
+	Onemptied                 Atom = 0x40a09
+	Onended                   Atom = 0x42307
+	Onerror                   Atom = 0x42a07
+	Onfocus                   Atom = 0x43107
+	Onhashchange              Atom = 0x43d0c
+	Oninput                   Atom = 0x44907
+	Oninvalid                 Atom = 0x45509
+	Onkeydown                 Atom = 0x45e09
+	Onkeypress                Atom = 0x46b0a
+	Onkeyup                   Atom = 0x48007
+	Onlanguagechange          Atom = 0x48d10
+	Onload                    Atom = 0x49d06
+	Onloadeddata              Atom = 0x49d0c
+	Onloadedmetadata          Atom = 0x4b010
+	Onloadend                 Atom = 0x4c609
+	Onloadstart               Atom = 0x4cf0b
+	Onmessage                 Atom = 0x4da09
+	Onmessageerror            Atom = 0x4da0e
+	Onmousedown               Atom = 0x4e80b
+	Onmouseenter              Atom = 0x4f30c
+	Onmouseleave              Atom = 0x4ff0c
+	Onmousemove               Atom = 0x50b0b
+	Onmouseout                Atom = 0x5160a
+	Onmouseover               Atom = 0x5230b
+	Onmouseup                 Atom = 0x52e09
+	Onmousewheel              Atom = 0x53c0c
+	Onoffline                 Atom = 0x54809
+	Ononline                  Atom = 0x55108
+	Onpagehide                Atom = 0x5590a
+	Onpageshow                Atom = 0x5730a
+	Onpaste                   Atom = 0x57f07
+	Onpause                   Atom = 0x59a07
+	Onplay                    Atom = 0x5a406
+	Onplaying                 Atom = 0x5a409
+	Onpopstate                Atom = 0x5ad0a
+	Onprogress                Atom = 0x5b70a
+	Onratechange              Atom = 0x5cc0c
+	Onrejectionhandled        Atom = 0x5d812
+	Onreset                   Atom = 0x5ea07
+	Onresize                  Atom = 0x5f108
+	Onscroll                  Atom = 0x60008
+	Onsecuritypolicyviolation Atom = 0x60819
+	Onseeked                  Atom = 0x62908
+	Onseeking                 Atom = 0x63109
+	Onselect                  Atom = 0x63a08
+	Onshow                    Atom = 0x64406
+	Onsort                    Atom = 0x64f06
+	Onstalled                 Atom = 0x65909
+	Onstorage                 Atom = 0x66209
+	Onsubmit                  Atom = 0x66b08
+	Onsuspend                 Atom = 0x67b09
+	Ontimeupdate              Atom = 0x400c
+	Ontoggle                  Atom = 0x68408
+	Onunhandledrejection      Atom = 0x68c14
+	Onunload                  Atom = 0x6ab08
+	Onvolumechange            Atom = 0x6b30e
+	Onwaiting                 Atom = 0x6c109
+	Onwheel                   Atom = 0x6ca07
+	Open                      Atom = 0x1a304
+	Optgroup                  Atom = 0x5f08
+	Optimum                   Atom = 0x6d107
+	Option                    Atom = 0x6e306
+	Output                    Atom = 0x51d06
+	P                         Atom = 0xc01
+	Param                     Atom = 0xc05
+	Pattern                   Atom = 0x6607
+	Picture                   Atom = 0x7b07
+	Ping                      Atom = 0xef04
+	Placeholder               Atom = 0x1310b
+	Plaintext                 Atom = 0x1b209
+	Playsinline               Atom = 0x1400b
+	Poster                    Atom = 0x2cf06
+	Pre                       Atom = 0x47003
+	Preload                   Atom = 0x48607
+	Progress                  Atom = 0x5b908
+	Prompt                    Atom = 0x53606
+	Public                    Atom = 0x58606
+	Q                         Atom = 0xcf01
+	Radiogroup                Atom = 0x30a
+	Rb                        Atom = 0x3a02
+	Readonly                  Atom = 0x35708
+	Referrerpolicy            Atom = 0x3d10e
+	Rel                       Atom = 0x48703
+	Required                  Atom = 0x24c08
+	Reversed                  Atom = 0x8008
+	Rows                      Atom = 0x9c04
+	Rowspan                   Atom = 0x9c07
+	Rp                        Atom = 0x23c02
+	Rt                        Atom = 0x19a02
+	Rtc                       Atom = 0x19a03
+	Ruby                      Atom = 0xfb04
+	S                         Atom = 0x2501
+	Samp                      Atom = 0x7804
+	Sandbox                   Atom = 0x12907
+	Scope                     Atom = 0x67505
+	Scoped                    Atom = 0x67506
+	Script                    Atom = 0x21806
+	Seamless                  Atom = 0x37108
+	Section                   Atom = 0x56807
+	Select                    Atom = 0x63c06
+	Selected                  Atom = 0x63c08
+	Shape                     Atom = 0x1e505
+	Size                      Atom = 0x5f504
+	Sizes                     Atom = 0x5f505
+	Slot                      Atom = 0x1ef04
+	Small                     Atom = 0x20605
+	Sortable                  Atom = 0x65108
+	Sorted                    Atom = 0x33706
+	Source                    Atom = 0x37806
+	Spacer                    Atom = 0x43706
+	Span                      Atom = 0x9f04
+	Spellcheck                Atom = 0x4740a
+	Src                       Atom = 0x5c003
+	Srcdoc                    Atom = 0x5c006
+	Srclang                   Atom = 0x5f907
+	Srcset                    Atom = 0x6f906
+	Start                     Atom = 0x3fa05
+	Step                      Atom = 0x58304
+	Strike                    Atom = 0xd206
+	Strong                    Atom = 0x6dd06
+	Style                     Atom = 0x6ff05
+	Sub                       Atom = 0x66d03
+	Summary                   Atom = 0x70407
+	Sup                       Atom = 0x70b03
+	Svg                       Atom = 0x70e03
+	System                    Atom = 0x71106
+	Tabindex                  Atom = 0x4be08
+	Table                     Atom = 0x59505
+	Target                    Atom = 0x2c406
+	Tbody                     Atom = 0x2705
+	Td                        Atom = 0x9202
+	Template                  Atom = 0x71408
+	Textarea                  Atom = 0x35208
+	Tfoot                     Atom = 0xf505
+	Th                        Atom = 0x15602
+	Thead                     Atom = 0x33005
+	Time                      Atom = 0x4204
+	Title                     Atom = 0x11005
+	Tr                        Atom = 0xcc02
+	Track                     Atom = 0x1ba05
+	Translate                 Atom = 0x1f209
+	Tt                        Atom = 0x6802
+	Type                      Atom = 0xd904
+	Typemustmatch             Atom = 0x2900d
+	U                         Atom = 0xb01
+	Ul                        Atom = 0xa702
+	Updateviacache            Atom = 0x460e
+	Usemap                    Atom = 0x59e06
+	Value                     Atom = 0x1505
+	Var                       Atom = 0x16d03
+	Video                     Atom = 0x2f105
+	Wbr                       Atom = 0x57c03
+	Width                     Atom = 0x64905
+	Workertype                Atom = 0x71c0a
+	Wrap                      Atom = 0x72604
+	Xmp                       Atom = 0x12f03
+)
+
+const hash0 = 0x81cdf10e
+
+const maxAtomLen = 25
+
+var table = [1 << 9]Atom{
+	0x1:   0xe60a,  // mediagroup
+	0x2:   0x2e404, // lang
+	0x4:   0x2c09,  // accesskey
+	0x5:   0x8b08,  // frameset
+	0x7:   0x63a08, // onselect
+	0x8:   0x71106, // system
+	0xa:   0x64905, // width
+	0xc:   0x2890b, // formenctype
+	0xd:   0x13702, // ol
+	0xe:   0x3970b, // oncuechange
+	0x10:  0x14b03, // bdo
+	0x11:  0x11505, // audio
+	0x12:  0x17a09, // draggable
+	0x14:  0x2f105, // video
+	0x15:  0x2b102, // mn
+	0x16:  0x38704, // menu
+	0x17:  0x2cf06, // poster
+	0x19:  0xf606,  // footer
+	0x1a:  0x2a806, // method
+	0x1b:  0x2b808, // datetime
+	0x1c:  0x19507, // onabort
+	0x1d:  0x460e,  // updateviacache
+	0x1e:  0xff05,  // async
+	0x1f:  0x49d06, // onload
+	0x21:  0x11908, // oncancel
+	0x22:  0x62908, // onseeked
+	0x23:  0x30205, // image
+	0x24:  0x5d812, // onrejectionhandled
+	0x26:  0x17404, // link
+	0x27:  0x51d06, // output
+	0x28:  0x33104, // head
+	0x29:  0x4ff0c, // onmouseleave
+	0x2a:  0x57f07, // onpaste
+	0x2b:  0x5a409, // onplaying
+	0x2c:  0x1c407, // colspan
+	0x2f:  0x1bf05, // color
+	0x30:  0x5f504, // size
+	0x31:  0x2e80a, // http-equiv
+	0x33:  0x601,   // i
+	0x34:  0x5590a, // onpagehide
+	0x35:  0x68c14, // onunhandledrejection
+	0x37:  0x42a07, // onerror
+	0x3a:  0x3b08,  // basefont
+	0x3f:  0x1303,  // nav
+	0x40:  0x17704, // kind
+	0x41:  0x35708, // readonly
+	0x42:  0x30806, // mglyph
+	0x44:  0xb202,  // li
+	0x46:  0x2d506, // hidden
+	0x47:  0x70e03, // svg
+	0x48:  0x58304, // step
+	0x49:  0x23f09, // integrity
+	0x4a:  0x58606, // public
+	0x4c:  0x1ab03, // col
+	0x4d:  0x1870a, // blockquote
+	0x4e:  0x34f02, // h5
+	0x50:  0x5b908, // progress
+	0x51:  0x5f505, // sizes
+	0x52:  0x34502, // h4
+	0x56:  0x33005, // thead
+	0x57:  0xd607,  // keytype
+	0x58:  0x5b70a, // onprogress
+	0x59:  0x44b09, // inputmode
+	0x5a:  0x3b109, // ondragend
+	0x5d:  0x3a205, // oncut
+	0x5e:  0x43706, // spacer
+	0x5f:  0x1ab08, // colgroup
+	0x62:  0x16502, // is
+	0x65:  0x3c02,  // as
+	0x66:  0x54809, // onoffline
+	0x67:  0x33706, // sorted
+	0x69:  0x48d10, // onlanguagechange
+	0x6c:  0x43d0c, // onhashchange
+	0x6d:  0x9604,  // name
+	0x6e:  0xf505,  // tfoot
+	0x6f:  0x56104, // desc
+	0x70:  0x33d03, // max
+	0x72:  0x1ea06, // coords
+	0x73:  0x30d02, // h3
+	0x74:  0x6e70e, // onbeforeunload
+	0x75:  0x9c04,  // rows
+	0x76:  0x63c06, // select
+	0x77:  0x9805,  // meter
+	0x78:  0x38b06, // itemid
+	0x79:  0x53c0c, // onmousewheel
+	0x7a:  0x5c006, // srcdoc
+	0x7d:  0x1ba05, // track
+	0x7f:  0x31f08, // itemtype
+	0x82:  0xa402,  // mo
+	0x83:  0x41b08, // onchange
+	0x84:  0x33107, // headers
+	0x85:  0x5cc0c, // onratechange
+	0x86:  0x60819, // onsecuritypolicyviolation
+	0x88:  0x4a508, // datalist
+	0x89:  0x4e80b, // onmousedown
+	0x8a:  0x1ef04, // slot
+	0x8b:  0x4b010, // onloadedmetadata
+	0x8c:  0x1a06,  // accept
+	0x8d:  0x26806, // object
+	0x91:  0x6b30e, // onvolumechange
+	0x92:  0x2107,  // charset
+	0x93:  0x27613, // onautocompleteerror
+	0x94:  0xc113,  // allowpaymentrequest
+	0x95:  0x2804,  // body
+	0x96:  0x10a07, // default
+	0x97:  0x63c08, // selected
+	0x98:  0x21e04, // face
+	0x99:  0x1e505, // shape
+	0x9b:  0x68408, // ontoggle
+	0x9e:  0x64b02, // dt
+	0x9f:  0xb604,  // mark
+	0xa1:  0xb01,   // u
+	0xa4:  0x6ab08, // onunload
+	0xa5:  0x5d04,  // loop
+	0xa6:  0x16408, // disabled
+	0xaa:  0x42307, // onended
+	0xab:  0xb00a,  // malignmark
+	0xad:  0x67b09, // onsuspend
+	0xae:  0x35105, // mtext
+	0xaf:  0x64f06, // onsort
+	0xb0:  0x19d08, // itemprop
+	0xb3:  0x67109, // itemscope
+	0xb4:  0x17305, // blink
+	0xb6:  0x3b106, // ondrag
+	0xb7:  0xa702,  // ul
+	0xb8:  0x26e04, // form
+	0xb9:  0x12907, // sandbox
+	0xba:  0x8b05,  // frame
+	0xbb:  0x1505,  // value
+	0xbc:  0x66209, // onstorage
+	0xbf:  0xaa07,  // acronym
+	0xc0:  0x19a02, // rt
+	0xc2:  0x202,   // br
+	0xc3:  0x22608, // fieldset
+	0xc4:  0x2900d, // typemustmatch
+	0xc5:  0xa208,  // nomodule
+	0xc6:  0x6c07,  // noembed
+	0xc7:  0x69e0d, // onbeforeprint
+	0xc8:  0x19106, // button
+	0xc9:  0x2f507, // onclick
+	0xca:  0x70407, // summary
+	0xcd:  0xfb04,  // ruby
+	0xce:  0x56405, // class
+	0xcf:  0x3f40b, // ondragstart
+	0xd0:  0x23107, // caption
+	0xd4:  0xdd0e,  // allowusermedia
+	0xd5:  0x4cf0b, // onloadstart
+	0xd9:  0x16b03, // div
+	0xda:  0x4a904, // list
+	0xdb:  0x32e04, // math
+	0xdc:  0x44b05, // input
+	0xdf:  0x3ea0a, // ondragover
+	0xe0:  0x2de02, // h2
+	0xe2:  0x1b209, // plaintext
+	0xe4:  0x4f30c, // onmouseenter
+	0xe7:  0x47907, // checked
+	0xe8:  0x47003, // pre
+	0xea:  0x35f08, // multiple
+	0xeb:  0xba03,  // bdi
+	0xec:  0x33d09, // maxlength
+	0xed:  0xcf01,  // q
+	0xee:  0x61f0a, // onauxclick
+	0xf0:  0x57c03, // wbr
+	0xf2:  0x3b04,  // base
+	0xf3:  0x6e306, // option
+	0xf5:  0x41310, // ondurationchange
+	0xf7:  0x8908,  // noframes
+	0xf9:  0x40508, // dropzone
+	0xfb:  0x67505, // scope
+	0xfc:  0x8008,  // reversed
+	0xfd:  0x3ba0b, // ondragenter
+	0xfe:  0x3fa05, // start
+	0xff:  0x12f03, // xmp
+	0x100: 0x5f907, // srclang
+	0x101: 0x30703, // img
+	0x104: 0x101,   // b
+	0x105: 0x25403, // for
+	0x106: 0x10705, // aside
+	0x107: 0x44907, // oninput
+	0x108: 0x35604, // area
+	0x109: 0x2a40a, // formmethod
+	0x10a: 0x72604, // wrap
+	0x10c: 0x23c02, // rp
+	0x10d: 0x46b0a, // onkeypress
+	0x10e: 0x6802,  // tt
+	0x110: 0x34702, // mi
+	0x111: 0x36705, // muted
+	0x112: 0xf303,  // alt
+	0x113: 0x5c504, // code
+	0x114: 0x6e02,  // em
+	0x115: 0x3c50a, // ondragexit
+	0x117: 0x9f04,  // span
+	0x119: 0x6d708, // manifest
+	0x11a: 0x38708, // menuitem
+	0x11b: 0x58b07, // content
+	0x11d: 0x6c109, // onwaiting
+	0x11f: 0x4c609, // onloadend
+	0x121: 0x37e0d, // oncontextmenu
+	0x123: 0x56d06, // onblur
+	0x124: 0x3fc07, // article
+	0x125: 0x9303,  // dir
+	0x126: 0xef04,  // ping
+	0x127: 0x24c08, // required
+	0x128: 0x45509, // oninvalid
+	0x129: 0xb105,  // align
+	0x12b: 0x58a04, // icon
+	0x12c: 0x64d02, // h6
+	0x12d: 0x1c404, // cols
+	0x12e: 0x22e0a, // figcaption
+	0x12f: 0x45e09, // onkeydown
+	0x130: 0x66b08, // onsubmit
+	0x131: 0x14d09, // oncanplay
+	0x132: 0x70b03, // sup
+	0x133: 0xc01,   // p
+	0x135: 0x40a09, // onemptied
+	0x136: 0x39106, // oncopy
+	0x137: 0x19c04, // cite
+	0x138: 0x3a70a, // ondblclick
+	0x13a: 0x50b0b, // onmousemove
+	0x13c: 0x66d03, // sub
+	0x13d: 0x48703, // rel
+	0x13e: 0x5f08,  // optgroup
+	0x142: 0x9c07,  // rowspan
+	0x143: 0x37806, // source
+	0x144: 0x21608, // noscript
+	0x145: 0x1a304, // open
+	0x146: 0x20403, // ins
+	0x147: 0x2540d, // foreignObject
+	0x148: 0x5ad0a, // onpopstate
+	0x14a: 0x28d07, // enctype
+	0x14b: 0x2760e, // onautocomplete
+	0x14c: 0x35208, // textarea
+	0x14e: 0x2780c, // autocomplete
+	0x14f: 0x15702, // hr
+	0x150: 0x1de08, // controls
+	0x151: 0x10902, // id
+	0x153: 0x2360c, // onafterprint
+	0x155: 0x2610d, // foreignobject
+	0x156: 0x32707, // marquee
+	0x157: 0x59a07, // onpause
+	0x158: 0x5e602, // dl
+	0x159: 0x5206,  // height
+	0x15a: 0x34703, // min
+	0x15b: 0x9307,  // dirname
+	0x15c: 0x1f209, // translate
+	0x15d: 0x5604,  // html
+	0x15e: 0x34709, // minlength
+	0x15f: 0x48607, // preload
+	0x160: 0x71408, // template
+	0x161: 0x3df0b, // ondragleave
+	0x162: 0x3a02,  // rb
+	0x164: 0x5c003, // src
+	0x165: 0x6dd06, // strong
+	0x167: 0x7804,  // samp
+	0x168: 0x6f307, // address
+	0x169: 0x55108, // ononline
+	0x16b: 0x1310b, // placeholder
+	0x16c: 0x2c406, // target
+	0x16d: 0x20605, // small
+	0x16e: 0x6ca07, // onwheel
+	0x16f: 0x1c90a, // annotation
+	0x170: 0x4740a, // spellcheck
+	0x171: 0x7207,  // details
+	0x172: 0x10306, // canvas
+	0x173: 0x12109, // autofocus
+	0x174: 0xc05,   // param
+	0x176: 0x46308, // download
+	0x177: 0x45203, // del
+	0x178: 0x36c07, // onclose
+	0x179: 0xb903,  // kbd
+	0x17a: 0x31906, // applet
+	0x17b: 0x2e004, // href
+	0x17c: 0x5f108, // onresize
+	0x17e: 0x49d0c, // onloadeddata
+	0x180: 0xcc02,  // tr
+	0x181: 0x2c00a, // formtarget
+	0x182: 0x11005, // title
+	0x183: 0x6ff05, // style
+	0x184: 0xd206,  // strike
+	0x185: 0x59e06, // usemap
+	0x186: 0x2fc06, // iframe
+	0x187: 0x1004,  // main
+	0x189: 0x7b07,  // picture
+	0x18c: 0x31605, // ismap
+	0x18e: 0x4a504, // data
+	0x18f: 0x5905,  // label
+	0x191: 0x3d10e, // referrerpolicy
+	0x192: 0x15602, // th
+	0x194: 0x53606, // prompt
+	0x195: 0x56807, // section
+	0x197: 0x6d107, // optimum
+	0x198: 0x2db04, // high
+	0x199: 0x15c02, // h1
+	0x19a: 0x65909, // onstalled
+	0x19b: 0x16d03, // var
+	0x19c: 0x4204,  // time
+	0x19e: 0x67402, // ms
+	0x19f: 0x33106, // header
+	0x1a0: 0x4da09, // onmessage
+	0x1a1: 0x1a605, // nonce
+	0x1a2: 0x26e0a, // formaction
+	0x1a3: 0x22006, // center
+	0x1a4: 0x3704,  // nobr
+	0x1a5: 0x59505, // table
+	0x1a6: 0x4a907, // listing
+	0x1a7: 0x18106, // legend
+	0x1a9: 0x29b09, // challenge
+	0x1aa: 0x24806, // figure
+	0x1ab: 0xe605,  // media
+	0x1ae: 0xd904,  // type
+	0x1af: 0x3f04,  // font
+	0x1b0: 0x4da0e, // onmessageerror
+	0x1b1: 0x37108, // seamless
+	0x1b2: 0x8703,  // dfn
+	0x1b3: 0x5c705, // defer
+	0x1b4: 0xc303,  // low
+	0x1b5: 0x19a03, // rtc
+	0x1b6: 0x5230b, // onmouseover
+	0x1b7: 0x2b20a, // novalidate
+	0x1b8: 0x71c0a, // workertype
+	0x1ba: 0x3cd07, // itemref
+	0x1bd: 0x1,     // a
+	0x1be: 0x31803, // map
+	0x1bf: 0x400c,  // ontimeupdate
+	0x1c0: 0x15e07, // bgsound
+	0x1c1: 0x3206,  // keygen
+	0x1c2: 0x2705,  // tbody
+	0x1c5: 0x64406, // onshow
+	0x1c7: 0x2501,  // s
+	0x1c8: 0x6607,  // pattern
+	0x1cc: 0x14d10, // oncanplaythrough
+	0x1ce: 0x2d702, // dd
+	0x1cf: 0x6f906, // srcset
+	0x1d0: 0x17003, // big
+	0x1d2: 0x65108, // sortable
+	0x1d3: 0x48007, // onkeyup
+	0x1d5: 0x5a406, // onplay
+	0x1d7: 0x4b804, // meta
+	0x1d8: 0x40306, // ondrop
+	0x1da: 0x60008, // onscroll
+	0x1db: 0x1fb0b, // crossorigin
+	0x1dc: 0x5730a, // onpageshow
+	0x1dd: 0x4,     // abbr
+	0x1de: 0x9202,  // td
+	0x1df: 0x58b0f, // contenteditable
+	0x1e0: 0x27206, // action
+	0x1e1: 0x1400b, // playsinline
+	0x1e2: 0x43107, // onfocus
+	0x1e3: 0x2e008, // hreflang
+	0x1e5: 0x5160a, // onmouseout
+	0x1e6: 0x5ea07, // onreset
+	0x1e7: 0x13c08, // autoplay
+	0x1e8: 0x63109, // onseeking
+	0x1ea: 0x67506, // scoped
+	0x1ec: 0x30a,   // radiogroup
+	0x1ee: 0x3800b, // contextmenu
+	0x1ef: 0x52e09, // onmouseup
+	0x1f1: 0x2ca06, // hgroup
+	0x1f2: 0x2080f, // allowfullscreen
+	0x1f3: 0x4be08, // tabindex
+	0x1f6: 0x30f07, // isindex
+	0x1f7: 0x1a0e,  // accept-charset
+	0x1f8: 0x2ae0e, // formnovalidate
+	0x1fb: 0x1c90e, // annotation-xml
+	0x1fc: 0x6e05,  // embed
+	0x1fd: 0x21806, // script
+	0x1fe: 0xbb06,  // dialog
+	0x1ff: 0x1d707, // command
+}
+
+const atomText = "abbradiogrouparamainavalueaccept-charsetbodyaccesskeygenobrb" +
+	"asefontimeupdateviacacheightmlabelooptgroupatternoembedetail" +
+	"sampictureversedfnoframesetdirnameterowspanomoduleacronymali" +
+	"gnmarkbdialogallowpaymentrequestrikeytypeallowusermediagroup" +
+	"ingaltfooterubyasyncanvasidefaultitleaudioncancelautofocusan" +
+	"dboxmplaceholderautoplaysinlinebdoncanplaythrough1bgsoundisa" +
+	"bledivarbigblinkindraggablegendblockquotebuttonabortcitempro" +
+	"penoncecolgrouplaintextrackcolorcolspannotation-xmlcommandco" +
+	"ntrolshapecoordslotranslatecrossoriginsmallowfullscreenoscri" +
+	"ptfacenterfieldsetfigcaptionafterprintegrityfigurequiredfore" +
+	"ignObjectforeignobjectformactionautocompleteerrorformenctype" +
+	"mustmatchallengeformmethodformnovalidatetimeformtargethgroup" +
+	"osterhiddenhigh2hreflanghttp-equivideonclickiframeimageimgly" +
+	"ph3isindexismappletitemtypemarqueematheadersortedmaxlength4m" +
+	"inlength5mtextareadonlymultiplemutedoncloseamlessourceoncont" +
+	"extmenuitemidoncopyoncuechangeoncutondblclickondragendondrag" +
+	"enterondragexitemreferrerpolicyondragleaveondragoverondragst" +
+	"articleondropzonemptiedondurationchangeonendedonerroronfocus" +
+	"paceronhashchangeoninputmodeloninvalidonkeydownloadonkeypres" +
+	"spellcheckedonkeyupreloadonlanguagechangeonloadeddatalisting" +
+	"onloadedmetadatabindexonloadendonloadstartonmessageerroronmo" +
+	"usedownonmouseenteronmouseleaveonmousemoveonmouseoutputonmou" +
+	"seoveronmouseupromptonmousewheelonofflineononlineonpagehides" +
+	"classectionbluronpageshowbronpastepublicontenteditableonpaus" +
+	"emaponplayingonpopstateonprogressrcdocodeferonratechangeonre" +
+	"jectionhandledonresetonresizesrclangonscrollonsecuritypolicy" +
+	"violationauxclickonseekedonseekingonselectedonshowidth6onsor" +
+	"tableonstalledonstorageonsubmitemscopedonsuspendontoggleonun" +
+	"handledrejectionbeforeprintonunloadonvolumechangeonwaitingon" +
+	"wheeloptimumanifestrongoptionbeforeunloaddressrcsetstylesumm" +
+	"arysupsvgsystemplateworkertypewrap"

vendor/golang.org/x/net/html/const.go

@@ -0,0 +1,112 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package html
+
+// Section 12.2.4.2 of the HTML5 specification says "The following elements
+// have varying levels of special parsing rules".
+// https://html.spec.whatwg.org/multipage/syntax.html#the-stack-of-open-elements
+var isSpecialElementMap = map[string]bool{
+	"address":    true,
+	"applet":     true,
+	"area":       true,
+	"article":    true,
+	"aside":      true,
+	"base":       true,
+	"basefont":   true,
+	"bgsound":    true,
+	"blockquote": true,
+	"body":       true,
+	"br":         true,
+	"button":     true,
+	"caption":    true,
+	"center":     true,
+	"col":        true,
+	"colgroup":   true,
+	"dd":         true,
+	"details":    true,
+	"dir":        true,
+	"div":        true,
+	"dl":         true,
+	"dt":         true,
+	"embed":      true,
+	"fieldset":   true,
+	"figcaption": true,
+	"figure":     true,
+	"footer":     true,
+	"form":       true,
+	"frame":      true,
+	"frameset":   true,
+	"h1":         true,
+	"h2":         true,
+	"h3":         true,
+	"h4":         true,
+	"h5":         true,
+	"h6":         true,
+	"head":       true,
+	"header":     true,
+	"hgroup":     true,
+	"hr":         true,
+	"html":       true,
+	"iframe":     true,
+	"img":        true,
+	"input":      true,
+	"isindex":    true, // The 'isindex' element has been removed, but keep it for backwards compatibility.
+	"keygen":     true,
+	"li":         true,
+	"link":       true,
+	"listing":    true,
+	"main":       true,
+	"marquee":    true,
+	"menu":       true,
+	"meta":       true,
+	"nav":        true,
+	"noembed":    true,
+	"noframes":   true,
+	"noscript":   true,
+	"object":     true,
+	"ol":         true,
+	"p":          true,
+	"param":      true,
+	"plaintext":  true,
+	"pre":        true,
+	"script":     true,
+	"section":    true,
+	"select":     true,
+	"source":     true,
+	"style":      true,
+	"summary":    true,
+	"table":      true,
+	"tbody":      true,
+	"td":         true,
+	"template":   true,
+	"textarea":   true,
+	"tfoot":      true,
+	"th":         true,
+	"thead":      true,
+	"title":      true,
+	"tr":         true,
+	"track":      true,
+	"ul":         true,
+	"wbr":        true,
+	"xmp":        true,
+}
+
+func isSpecialElement(element *Node) bool {
+	switch element.Namespace {
+	case "", "html":
+		return isSpecialElementMap[element.Data]
+	case "math":
+		switch element.Data {
+		case "mi", "mo", "mn", "ms", "mtext", "annotation-xml":
+			return true
+		}
+	case "svg":
+		switch element.Data {
+		case "foreignObject", "desc", "title":
+			return true
+		}
+	}
+	return false
+}

vendor/golang.org/x/net/html/doc.go

@@ -0,0 +1,106 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+/*
+Package html implements an HTML5-compliant tokenizer and parser.
+
+Tokenization is done by creating a Tokenizer for an io.Reader r. It is the
+caller's responsibility to ensure that r provides UTF-8 encoded HTML.
+
+	z := html.NewTokenizer(r)
+
+Given a Tokenizer z, the HTML is tokenized by repeatedly calling z.Next(),
+which parses the next token and returns its type, or an error:
+
+	for {
+		tt := z.Next()
+		if tt == html.ErrorToken {
+			// ...
+			return ...
+		}
+		// Process the current token.
+	}
+
+There are two APIs for retrieving the current token. The high-level API is to
+call Token; the low-level API is to call Text or TagName / TagAttr. Both APIs
+allow optionally calling Raw after Next but before Token, Text, TagName, or
+TagAttr. In EBNF notation, the valid call sequence per token is:
+
+	Next {Raw} [ Token | Text | TagName {TagAttr} ]
+
+Token returns an independent data structure that completely describes a token.
+Entities (such as "<") are unescaped, tag names and attribute keys are
+lower-cased, and attributes are collected into a []Attribute. For example:
+
+	for {
+		if z.Next() == html.ErrorToken {
+			// Returning io.EOF indicates success.
+			return z.Err()
+		}
+		emitToken(z.Token())
+	}
+
+The low-level API performs fewer allocations and copies, but the contents of
+the []byte values returned by Text, TagName and TagAttr may change on the next
+call to Next. For example, to extract an HTML page's anchor text:
+
+	depth := 0
+	for {
+		tt := z.Next()
+		switch tt {
+		case html.ErrorToken:
+			return z.Err()
+		case html.TextToken:
+			if depth > 0 {
+				// emitBytes should copy the []byte it receives,
+				// if it doesn't process it immediately.
+				emitBytes(z.Text())
+			}
+		case html.StartTagToken, html.EndTagToken:
+			tn, _ := z.TagName()
+			if len(tn) == 1 && tn[0] == 'a' {
+				if tt == html.StartTagToken {
+					depth++
+				} else {
+					depth--
+				}
+			}
+		}
+	}
+
+Parsing is done by calling Parse with an io.Reader, which returns the root of
+the parse tree (the document element) as a *Node. It is the caller's
+responsibility to ensure that the Reader provides UTF-8 encoded HTML. For
+example, to process each anchor node in depth-first order:
+
+	doc, err := html.Parse(r)
+	if err != nil {
+		// ...
+	}
+	var f func(*html.Node)
+	f = func(n *html.Node) {
+		if n.Type == html.ElementNode && n.Data == "a" {
+			// Do something with n...
+		}
+		for c := n.FirstChild; c != nil; c = c.NextSibling {
+			f(c)
+		}
+	}
+	f(doc)
+
+The relevant specifications include:
+https://html.spec.whatwg.org/multipage/syntax.html and
+https://html.spec.whatwg.org/multipage/syntax.html#tokenization
+*/
+package html // import "golang.org/x/net/html"
+
+// The tokenization algorithm implemented by this package is not a line-by-line
+// transliteration of the relatively verbose state-machine in the WHATWG
+// specification. A more direct approach is used instead, where the program
+// counter implies the state, such as whether it is tokenizing a tag or a text
+// node. Specification compliance is verified by checking expected and actual
+// outputs over a test suite rather than aiming for algorithmic fidelity.
+
+// TODO(nigeltao): Does a DOM API belong in this package or a separate one?
+// TODO(nigeltao): How does parsing interact with a JavaScript engine?

vendor/golang.org/x/net/html/doctype.go

@@ -0,0 +1,156 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package html
+
+import (
+	"strings"
+)
+
+// parseDoctype parses the data from a DoctypeToken into a name,
+// public identifier, and system identifier. It returns a Node whose Type
+// is DoctypeNode, whose Data is the name, and which has attributes
+// named "system" and "public" for the two identifiers if they were present.
+// quirks is whether the document should be parsed in "quirks mode".
+func parseDoctype(s string) (n *Node, quirks bool) {
+	n = &Node{Type: DoctypeNode}
+
+	// Find the name.
+	space := strings.IndexAny(s, whitespace)
+	if space == -1 {
+		space = len(s)
+	}
+	n.Data = s[:space]
+	// The comparison to "html" is case-sensitive.
+	if n.Data != "html" {
+		quirks = true
+	}
+	n.Data = strings.ToLower(n.Data)
+	s = strings.TrimLeft(s[space:], whitespace)
+
+	if len(s) < 6 {
+		// It can't start with "PUBLIC" or "SYSTEM".
+		// Ignore the rest of the string.
+		return n, quirks || s != ""
+	}
+
+	key := strings.ToLower(s[:6])
+	s = s[6:]
+	for key == "public" || key == "system" {
+		s = strings.TrimLeft(s, whitespace)
+		if s == "" {
+			break
+		}
+		quote := s[0]
+		if quote != '"' && quote != '\'' {
+			break
+		}
+		s = s[1:]
+		q := strings.IndexRune(s, rune(quote))
+		var id string
+		if q == -1 {
+			id = s
+			s = ""
+		} else {
+			id = s[:q]
+			s = s[q+1:]
+		}
+		n.Attr = append(n.Attr, Attribute{Key: key, Val: id})
+		if key == "public" {
+			key = "system"
+		} else {
+			key = ""
+		}
+	}
+
+	if key != "" || s != "" {
+		quirks = true
+	} else if len(n.Attr) > 0 {
+		if n.Attr[0].Key == "public" {
+			public := strings.ToLower(n.Attr[0].Val)
+			switch public {
+			case "-//w3o//dtd w3 html strict 3.0//en//", "-/w3d/dtd html 4.0 transitional/en", "html":
+				quirks = true
+			default:
+				for _, q := range quirkyIDs {
+					if strings.HasPrefix(public, q) {
+						quirks = true
+						break
+					}
+				}
+			}
+			// The following two public IDs only cause quirks mode if there is no system ID.
+			if len(n.Attr) == 1 && (strings.HasPrefix(public, "-//w3c//dtd html 4.01 frameset//") ||
+				strings.HasPrefix(public, "-//w3c//dtd html 4.01 transitional//")) {
+				quirks = true
+			}
+		}
+		if lastAttr := n.Attr[len(n.Attr)-1]; lastAttr.Key == "system" &&
+			strings.ToLower(lastAttr.Val) == "http://www.ibm.com/data/dtd/v11/ibmxhtml1-transitional.dtd" {
+			quirks = true
+		}
+	}
+
+	return n, quirks
+}
+
+// quirkyIDs is a list of public doctype identifiers that cause a document
+// to be interpreted in quirks mode. The identifiers should be in lower case.
+var quirkyIDs = []string{
+	"+//silmaril//dtd html pro v0r11 19970101//",
+	"-//advasoft ltd//dtd html 3.0 aswedit + extensions//",
+	"-//as//dtd html 3.0 aswedit + extensions//",
+	"-//ietf//dtd html 2.0 level 1//",
+	"-//ietf//dtd html 2.0 level 2//",
+	"-//ietf//dtd html 2.0 strict level 1//",
+	"-//ietf//dtd html 2.0 strict level 2//",
+	"-//ietf//dtd html 2.0 strict//",
+	"-//ietf//dtd html 2.0//",
+	"-//ietf//dtd html 2.1e//",
+	"-//ietf//dtd html 3.0//",
+	"-//ietf//dtd html 3.2 final//",
+	"-//ietf//dtd html 3.2//",
+	"-//ietf//dtd html 3//",
+	"-//ietf//dtd html level 0//",
+	"-//ietf//dtd html level 1//",
+	"-//ietf//dtd html level 2//",
+	"-//ietf//dtd html level 3//",
+	"-//ietf//dtd html strict level 0//",
+	"-//ietf//dtd html strict level 1//",
+	"-//ietf//dtd html strict level 2//",
+	"-//ietf//dtd html strict level 3//",
+	"-//ietf//dtd html strict//",
+	"-//ietf//dtd html//",
+	"-//metrius//dtd metrius presentational//",
+	"-//microsoft//dtd internet explorer 2.0 html strict//",
+	"-//microsoft//dtd internet explorer 2.0 html//",
+	"-//microsoft//dtd internet explorer 2.0 tables//",
+	"-//microsoft//dtd internet explorer 3.0 html strict//",
+	"-//microsoft//dtd internet explorer 3.0 html//",
+	"-//microsoft//dtd internet explorer 3.0 tables//",
+	"-//netscape comm. corp.//dtd html//",
+	"-//netscape comm. corp.//dtd strict html//",
+	"-//o'reilly and associates//dtd html 2.0//",
+	"-//o'reilly and associates//dtd html extended 1.0//",
+	"-//o'reilly and associates//dtd html extended relaxed 1.0//",
+	"-//softquad software//dtd hotmetal pro 6.0::19990601::extensions to html 4.0//",
+	"-//softquad//dtd hotmetal pro 4.0::19971010::extensions to html 4.0//",
+	"-//spyglass//dtd html 2.0 extended//",
+	"-//sq//dtd html 2.0 hotmetal + extensions//",
+	"-//sun microsystems corp.//dtd hotjava html//",
+	"-//sun microsystems corp.//dtd hotjava strict html//",
+	"-//w3c//dtd html 3 1995-03-24//",
+	"-//w3c//dtd html 3.2 draft//",
+	"-//w3c//dtd html 3.2 final//",
+	"-//w3c//dtd html 3.2//",
+	"-//w3c//dtd html 3.2s draft//",
+	"-//w3c//dtd html 4.0 frameset//",
+	"-//w3c//dtd html 4.0 transitional//",
+	"-//w3c//dtd html experimental 19960712//",
+	"-//w3c//dtd html experimental 970421//",
+	"-//w3c//dtd w3 html//",
+	"-//w3o//dtd w3 html 3.0//",
+	"-//webtechs//dtd mozilla html 2.0//",
+	"-//webtechs//dtd mozilla html//",
+}

vendor/golang.org/x/net/html/escape.go

@@ -0,0 +1,258 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package html
+
+import (
+	"bytes"
+	"strings"
+	"unicode/utf8"
+)
+
+// These replacements permit compatibility with old numeric entities that
+// assumed Windows-1252 encoding.
+// https://html.spec.whatwg.org/multipage/syntax.html#consume-a-character-reference
+var replacementTable = [...]rune{
+	'\u20AC', // First entry is what 0x80 should be replaced with.
+	'\u0081',
+	'\u201A',
+	'\u0192',
+	'\u201E',
+	'\u2026',
+	'\u2020',
+	'\u2021',
+	'\u02C6',
+	'\u2030',
+	'\u0160',
+	'\u2039',
+	'\u0152',
+	'\u008D',
+	'\u017D',
+	'\u008F',
+	'\u0090',
+	'\u2018',
+	'\u2019',
+	'\u201C',
+	'\u201D',
+	'\u2022',
+	'\u2013',
+	'\u2014',
+	'\u02DC',
+	'\u2122',
+	'\u0161',
+	'\u203A',
+	'\u0153',
+	'\u009D',
+	'\u017E',
+	'\u0178', // Last entry is 0x9F.
+	// 0x00->'\uFFFD' is handled programmatically.
+	// 0x0D->'\u000D' is a no-op.
+}
+
+// unescapeEntity reads an entity like "<" from b[src:] and writes the
+// corresponding "<" to b[dst:], returning the incremented dst and src cursors.
+// Precondition: b[src] == '&' && dst <= src.
+// attribute should be true if parsing an attribute value.
+func unescapeEntity(b []byte, dst, src int, attribute bool) (dst1, src1 int) {
+	// https://html.spec.whatwg.org/multipage/syntax.html#consume-a-character-reference
+
+	// i starts at 1 because we already know that s[0] == '&'.
+	i, s := 1, b[src:]
+
+	if len(s) <= 1 {
+		b[dst] = b[src]
+		return dst + 1, src + 1
+	}
+
+	if s[i] == '#' {
+		if len(s) <= 3 { // We need to have at least "&#.".
+			b[dst] = b[src]
+			return dst + 1, src + 1
+		}
+		i++
+		c := s[i]
+		hex := false
+		if c == 'x' || c == 'X' {
+			hex = true
+			i++
+		}
+
+		x := '\x00'
+		for i < len(s) {
+			c = s[i]
+			i++
+			if hex {
+				if '0' <= c && c <= '9' {
+					x = 16*x + rune(c) - '0'
+					continue
+				} else if 'a' <= c && c <= 'f' {
+					x = 16*x + rune(c) - 'a' + 10
+					continue
+				} else if 'A' <= c && c <= 'F' {
+					x = 16*x + rune(c) - 'A' + 10
+					continue
+				}
+			} else if '0' <= c && c <= '9' {
+				x = 10*x + rune(c) - '0'
+				continue
+			}
+			if c != ';' {
+				i--
+			}
+			break
+		}
+
+		if i <= 3 { // No characters matched.
+			b[dst] = b[src]
+			return dst + 1, src + 1
+		}
+
+		if 0x80 <= x && x <= 0x9F {
+			// Replace characters from Windows-1252 with UTF-8 equivalents.
+			x = replacementTable[x-0x80]
+		} else if x == 0 || (0xD800 <= x && x <= 0xDFFF) || x > 0x10FFFF {
+			// Replace invalid characters with the replacement character.
+			x = '\uFFFD'
+		}
+
+		return dst + utf8.EncodeRune(b[dst:], x), src + i
+	}
+
+	// Consume the maximum number of characters possible, with the
+	// consumed characters matching one of the named references.
+
+	for i < len(s) {
+		c := s[i]
+		i++
+		// Lower-cased characters are more common in entities, so we check for them first.
+		if 'a' <= c && c <= 'z' || 'A' <= c && c <= 'Z' || '0' <= c && c <= '9' {
+			continue
+		}
+		if c != ';' {
+			i--
+		}
+		break
+	}
+
+	entityName := string(s[1:i])
+	if entityName == "" {
+		// No-op.
+	} else if attribute && entityName[len(entityName)-1] != ';' && len(s) > i && s[i] == '=' {
+		// No-op.
+	} else if x := entity[entityName]; x != 0 {
+		return dst + utf8.EncodeRune(b[dst:], x), src + i
+	} else if x := entity2[entityName]; x[0] != 0 {
+		dst1 := dst + utf8.EncodeRune(b[dst:], x[0])
+		return dst1 + utf8.EncodeRune(b[dst1:], x[1]), src + i
+	} else if !attribute {
+		maxLen := len(entityName) - 1
+		if maxLen > longestEntityWithoutSemicolon {
+			maxLen = longestEntityWithoutSemicolon
+		}
+		for j := maxLen; j > 1; j-- {
+			if x := entity[entityName[:j]]; x != 0 {
+				return dst + utf8.EncodeRune(b[dst:], x), src + j + 1
+			}
+		}
+	}
+
+	dst1, src1 = dst+i, src+i
+	copy(b[dst:dst1], b[src:src1])
+	return dst1, src1
+}
+
+// unescape unescapes b's entities in-place, so that "a&lt;b" becomes "a<b".
+// attribute should be true if parsing an attribute value.
+func unescape(b []byte, attribute bool) []byte {
+	for i, c := range b {
+		if c == '&' {
+			dst, src := unescapeEntity(b, i, i, attribute)
+			for src < len(b) {
+				c := b[src]
+				if c == '&' {
+					dst, src = unescapeEntity(b, dst, src, attribute)
+				} else {
+					b[dst] = c
+					dst, src = dst+1, src+1
+				}
+			}
+			return b[0:dst]
+		}
+	}
+	return b
+}
+
+// lower lower-cases the A-Z bytes in b in-place, so that "aBc" becomes "abc".
+func lower(b []byte) []byte {
+	for i, c := range b {
+		if 'A' <= c && c <= 'Z' {
+			b[i] = c + 'a' - 'A'
+		}
+	}
+	return b
+}
+
+const escapedChars = "&'<>\"\r"
+
+func escape(w writer, s string) error {
+	i := strings.IndexAny(s, escapedChars)
+	for i != -1 {
+		if _, err := w.WriteString(s[:i]); err != nil {
+			return err
+		}
+		var esc string
+		switch s[i] {
+		case '&':
+			esc = "&amp;"
+		case '\'':
+			// "&#39;" is shorter than "&apos;" and apos was not in HTML until HTML5.
+			esc = "&#39;"
+		case '<':
+			esc = "&lt;"
+		case '>':
+			esc = "&gt;"
+		case '"':
+			// "&#34;" is shorter than "&quot;".
+			esc = "&#34;"
+		case '\r':
+			esc = "&#13;"
+		default:
+			panic("unrecognized escape character")
+		}
+		s = s[i+1:]
+		if _, err := w.WriteString(esc); err != nil {
+			return err
+		}
+		i = strings.IndexAny(s, escapedChars)
+	}
+	_, err := w.WriteString(s)
+	return err
+}
+
+// EscapeString escapes special characters like "<" to become "&lt;". It
+// escapes only five such characters: <, >, &, ' and ".
+// UnescapeString(EscapeString(s)) == s always holds, but the converse isn't
+// always true.
+func EscapeString(s string) string {
+	if strings.IndexAny(s, escapedChars) == -1 {
+		return s
+	}
+	var buf bytes.Buffer
+	escape(&buf, s)
+	return buf.String()
+}
+
+// UnescapeString unescapes entities like "&lt;" to become "<". It unescapes a
+// larger range of entities than EscapeString escapes. For example, "&aacute;"
+// unescapes to "á", as does "&#225;" and "&xE1;".
+// UnescapeString(EscapeString(s)) == s always holds, but the converse isn't
+// always true.
+func UnescapeString(s string) string {
+	for _, c := range s {
+		if c == '&' {
+			return string(unescape([]byte(s), false))
+		}
+	}
+	return s
+}

vendor/golang.org/x/net/html/foreign.go

@@ -0,0 +1,226 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package html
+
+import (
+	"strings"
+)
+
+func adjustAttributeNames(aa []Attribute, nameMap map[string]string) {
+	for i := range aa {
+		if newName, ok := nameMap[aa[i].Key]; ok {
+			aa[i].Key = newName
+		}
+	}
+}
+
+func adjustForeignAttributes(aa []Attribute) {
+	for i, a := range aa {
+		if a.Key == "" || a.Key[0] != 'x' {
+			continue
+		}
+		switch a.Key {
+		case "xlink:actuate", "xlink:arcrole", "xlink:href", "xlink:role", "xlink:show",
+			"xlink:title", "xlink:type", "xml:base", "xml:lang", "xml:space", "xmlns:xlink":
+			j := strings.Index(a.Key, ":")
+			aa[i].Namespace = a.Key[:j]
+			aa[i].Key = a.Key[j+1:]
+		}
+	}
+}
+
+func htmlIntegrationPoint(n *Node) bool {
+	if n.Type != ElementNode {
+		return false
+	}
+	switch n.Namespace {
+	case "math":
+		if n.Data == "annotation-xml" {
+			for _, a := range n.Attr {
+				if a.Key == "encoding" {
+					val := strings.ToLower(a.Val)
+					if val == "text/html" || val == "application/xhtml+xml" {
+						return true
+					}
+				}
+			}
+		}
+	case "svg":
+		switch n.Data {
+		case "desc", "foreignObject", "title":
+			return true
+		}
+	}
+	return false
+}
+
+func mathMLTextIntegrationPoint(n *Node) bool {
+	if n.Namespace != "math" {
+		return false
+	}
+	switch n.Data {
+	case "mi", "mo", "mn", "ms", "mtext":
+		return true
+	}
+	return false
+}
+
+// Section 12.2.6.5.
+var breakout = map[string]bool{
+	"b":          true,
+	"big":        true,
+	"blockquote": true,
+	"body":       true,
+	"br":         true,
+	"center":     true,
+	"code":       true,
+	"dd":         true,
+	"div":        true,
+	"dl":         true,
+	"dt":         true,
+	"em":         true,
+	"embed":      true,
+	"h1":         true,
+	"h2":         true,
+	"h3":         true,
+	"h4":         true,
+	"h5":         true,
+	"h6":         true,
+	"head":       true,
+	"hr":         true,
+	"i":          true,
+	"img":        true,
+	"li":         true,
+	"listing":    true,
+	"menu":       true,
+	"meta":       true,
+	"nobr":       true,
+	"ol":         true,
+	"p":          true,
+	"pre":        true,
+	"ruby":       true,
+	"s":          true,
+	"small":      true,
+	"span":       true,
+	"strong":     true,
+	"strike":     true,
+	"sub":        true,
+	"sup":        true,
+	"table":      true,
+	"tt":         true,
+	"u":          true,
+	"ul":         true,
+	"var":        true,
+}
+
+// Section 12.2.6.5.
+var svgTagNameAdjustments = map[string]string{
+	"altglyph":            "altGlyph",
+	"altglyphdef":         "altGlyphDef",
+	"altglyphitem":        "altGlyphItem",
+	"animatecolor":        "animateColor",
+	"animatemotion":       "animateMotion",
+	"animatetransform":    "animateTransform",
+	"clippath":            "clipPath",
+	"feblend":             "feBlend",
+	"fecolormatrix":       "feColorMatrix",
+	"fecomponenttransfer": "feComponentTransfer",
+	"fecomposite":         "feComposite",
+	"feconvolvematrix":    "feConvolveMatrix",
+	"fediffuselighting":   "feDiffuseLighting",
+	"fedisplacementmap":   "feDisplacementMap",
+	"fedistantlight":      "feDistantLight",
+	"feflood":             "feFlood",
+	"fefunca":             "feFuncA",
+	"fefuncb":             "feFuncB",
+	"fefuncg":             "feFuncG",
+	"fefuncr":             "feFuncR",
+	"fegaussianblur":      "feGaussianBlur",
+	"feimage":             "feImage",
+	"femerge":             "feMerge",
+	"femergenode":         "feMergeNode",
+	"femorphology":        "feMorphology",
+	"feoffset":            "feOffset",
+	"fepointlight":        "fePointLight",
+	"fespecularlighting":  "feSpecularLighting",
+	"fespotlight":         "feSpotLight",
+	"fetile":              "feTile",
+	"feturbulence":        "feTurbulence",
+	"foreignobject":       "foreignObject",
+	"glyphref":            "glyphRef",
+	"lineargradient":      "linearGradient",
+	"radialgradient":      "radialGradient",
+	"textpath":            "textPath",
+}
+
+// Section 12.2.6.1
+var mathMLAttributeAdjustments = map[string]string{
+	"definitionurl": "definitionURL",
+}
+
+var svgAttributeAdjustments = map[string]string{
+	"attributename":             "attributeName",
+	"attributetype":             "attributeType",
+	"basefrequency":             "baseFrequency",
+	"baseprofile":               "baseProfile",
+	"calcmode":                  "calcMode",
+	"clippathunits":             "clipPathUnits",
+	"contentscripttype":         "contentScriptType",
+	"contentstyletype":          "contentStyleType",
+	"diffuseconstant":           "diffuseConstant",
+	"edgemode":                  "edgeMode",
+	"externalresourcesrequired": "externalResourcesRequired",
+	"filterres":                 "filterRes",
+	"filterunits":               "filterUnits",
+	"glyphref":                  "glyphRef",
+	"gradienttransform":         "gradientTransform",
+	"gradientunits":             "gradientUnits",
+	"kernelmatrix":              "kernelMatrix",
+	"kernelunitlength":          "kernelUnitLength",
+	"keypoints":                 "keyPoints",
+	"keysplines":                "keySplines",
+	"keytimes":                  "keyTimes",
+	"lengthadjust":              "lengthAdjust",
+	"limitingconeangle":         "limitingConeAngle",
+	"markerheight":              "markerHeight",
+	"markerunits":               "markerUnits",
+	"markerwidth":               "markerWidth",
+	"maskcontentunits":          "maskContentUnits",
+	"maskunits":                 "maskUnits",
+	"numoctaves":                "numOctaves",
+	"pathlength":                "pathLength",
+	"patterncontentunits":       "patternContentUnits",
+	"patterntransform":          "patternTransform",
+	"patternunits":              "patternUnits",
+	"pointsatx":                 "pointsAtX",
+	"pointsaty":                 "pointsAtY",
+	"pointsatz":                 "pointsAtZ",
+	"preservealpha":             "preserveAlpha",
+	"preserveaspectratio":       "preserveAspectRatio",
+	"primitiveunits":            "primitiveUnits",
+	"refx":                      "refX",
+	"refy":                      "refY",
+	"repeatcount":               "repeatCount",
+	"repeatdur":                 "repeatDur",
+	"requiredextensions":        "requiredExtensions",
+	"requiredfeatures":          "requiredFeatures",
+	"specularconstant":          "specularConstant",
+	"specularexponent":          "specularExponent",
+	"spreadmethod":              "spreadMethod",
+	"startoffset":               "startOffset",
+	"stddeviation":              "stdDeviation",
+	"stitchtiles":               "stitchTiles",
+	"surfacescale":              "surfaceScale",
+	"systemlanguage":            "systemLanguage",
+	"tablevalues":               "tableValues",
+	"targetx":                   "targetX",
+	"targety":                   "targetY",
+	"textlength":                "textLength",
+	"viewbox":                   "viewBox",
+	"viewtarget":                "viewTarget",
+	"xchannelselector":          "xChannelSelector",
+	"ychannelselector":          "yChannelSelector",
+	"zoomandpan":                "zoomAndPan",
+}

vendor/golang.org/x/net/html/node.go

@@ -0,0 +1,220 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package html
+
+import (
+	"golang.org/x/net/html/atom"
+)
+
+// A NodeType is the type of a Node.
+type NodeType uint32
+
+const (
+	ErrorNode NodeType = iota
+	TextNode
+	DocumentNode
+	ElementNode
+	CommentNode
+	DoctypeNode
+	scopeMarkerNode
+)
+
+// Section 12.2.4.3 says "The markers are inserted when entering applet,
+// object, marquee, template, td, th, and caption elements, and are used
+// to prevent formatting from "leaking" into applet, object, marquee,
+// template, td, th, and caption elements".
+var scopeMarker = Node{Type: scopeMarkerNode}
+
+// A Node consists of a NodeType and some Data (tag name for element nodes,
+// content for text) and are part of a tree of Nodes. Element nodes may also
+// have a Namespace and contain a slice of Attributes. Data is unescaped, so
+// that it looks like "a<b" rather than "a&lt;b". For element nodes, DataAtom
+// is the atom for Data, or zero if Data is not a known tag name.
+//
+// An empty Namespace implies a "http://www.w3.org/1999/xhtml" namespace.
+// Similarly, "math" is short for "http://www.w3.org/1998/Math/MathML", and
+// "svg" is short for "http://www.w3.org/2000/svg".
+type Node struct {
+	Parent, FirstChild, LastChild, PrevSibling, NextSibling *Node
+
+	Type      NodeType
+	DataAtom  atom.Atom
+	Data      string
+	Namespace string
+	Attr      []Attribute
+}
+
+// InsertBefore inserts newChild as a child of n, immediately before oldChild
+// in the sequence of n's children. oldChild may be nil, in which case newChild
+// is appended to the end of n's children.
+//
+// It will panic if newChild already has a parent or siblings.
+func (n *Node) InsertBefore(newChild, oldChild *Node) {
+	if newChild.Parent != nil || newChild.PrevSibling != nil || newChild.NextSibling != nil {
+		panic("html: InsertBefore called for an attached child Node")
+	}
+	var prev, next *Node
+	if oldChild != nil {
+		prev, next = oldChild.PrevSibling, oldChild
+	} else {
+		prev = n.LastChild
+	}
+	if prev != nil {
+		prev.NextSibling = newChild
+	} else {
+		n.FirstChild = newChild
+	}
+	if next != nil {
+		next.PrevSibling = newChild
+	} else {
+		n.LastChild = newChild
+	}
+	newChild.Parent = n
+	newChild.PrevSibling = prev
+	newChild.NextSibling = next
+}
+
+// AppendChild adds a node c as a child of n.
+//
+// It will panic if c already has a parent or siblings.
+func (n *Node) AppendChild(c *Node) {
+	if c.Parent != nil || c.PrevSibling != nil || c.NextSibling != nil {
+		panic("html: AppendChild called for an attached child Node")
+	}
+	last := n.LastChild
+	if last != nil {
+		last.NextSibling = c
+	} else {
+		n.FirstChild = c
+	}
+	n.LastChild = c
+	c.Parent = n
+	c.PrevSibling = last
+}
+
+// RemoveChild removes a node c that is a child of n. Afterwards, c will have
+// no parent and no siblings.
+//
+// It will panic if c's parent is not n.
+func (n *Node) RemoveChild(c *Node) {
+	if c.Parent != n {
+		panic("html: RemoveChild called for a non-child Node")
+	}
+	if n.FirstChild == c {
+		n.FirstChild = c.NextSibling
+	}
+	if c.NextSibling != nil {
+		c.NextSibling.PrevSibling = c.PrevSibling
+	}
+	if n.LastChild == c {
+		n.LastChild = c.PrevSibling
+	}
+	if c.PrevSibling != nil {
+		c.PrevSibling.NextSibling = c.NextSibling
+	}
+	c.Parent = nil
+	c.PrevSibling = nil
+	c.NextSibling = nil
+}
+
+// reparentChildren reparents all of src's child nodes to dst.
+func reparentChildren(dst, src *Node) {
+	for {
+		child := src.FirstChild
+		if child == nil {
+			break
+		}
+		src.RemoveChild(child)
+		dst.AppendChild(child)
+	}
+}
+
+// clone returns a new node with the same type, data and attributes.
+// The clone has no parent, no siblings and no children.
+func (n *Node) clone() *Node {
+	m := &Node{
+		Type:     n.Type,
+		DataAtom: n.DataAtom,
+		Data:     n.Data,
+		Attr:     make([]Attribute, len(n.Attr)),
+	}
+	copy(m.Attr, n.Attr)
+	return m
+}
+
+// nodeStack is a stack of nodes.
+type nodeStack []*Node
+
+// pop pops the stack. It will panic if s is empty.
+func (s *nodeStack) pop() *Node {
+	i := len(*s)
+	n := (*s)[i-1]
+	*s = (*s)[:i-1]
+	return n
+}
+
+// top returns the most recently pushed node, or nil if s is empty.
+func (s *nodeStack) top() *Node {
+	if i := len(*s); i > 0 {
+		return (*s)[i-1]
+	}
+	return nil
+}
+
+// index returns the index of the top-most occurrence of n in the stack, or -1
+// if n is not present.
+func (s *nodeStack) index(n *Node) int {
+	for i := len(*s) - 1; i >= 0; i-- {
+		if (*s)[i] == n {
+			return i
+		}
+	}
+	return -1
+}
+
+// contains returns whether a is within s.
+func (s *nodeStack) contains(a atom.Atom) bool {
+	for _, n := range *s {
+		if n.DataAtom == a && n.Namespace == "" {
+			return true
+		}
+	}
+	return false
+}
+
+// insert inserts a node at the given index.
+func (s *nodeStack) insert(i int, n *Node) {
+	(*s) = append(*s, nil)
+	copy((*s)[i+1:], (*s)[i:])
+	(*s)[i] = n
+}
+
+// remove removes a node from the stack. It is a no-op if n is not present.
+func (s *nodeStack) remove(n *Node) {
+	i := s.index(n)
+	if i == -1 {
+		return
+	}
+	copy((*s)[i:], (*s)[i+1:])
+	j := len(*s) - 1
+	(*s)[j] = nil
+	*s = (*s)[:j]
+}
+
+type insertionModeStack []insertionMode
+
+func (s *insertionModeStack) pop() (im insertionMode) {
+	i := len(*s)
+	im = (*s)[i-1]
+	*s = (*s)[:i-1]
+	return im
+}
+
+func (s *insertionModeStack) top() insertionMode {
+	if i := len(*s); i > 0 {
+		return (*s)[i-1]
+	}
+	return nil
+}

vendor/golang.org/x/net/html/render.go

@@ -0,0 +1,271 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package html
+
+import (
+	"bufio"
+	"errors"
+	"fmt"
+	"io"
+	"strings"
+)
+
+type writer interface {
+	io.Writer
+	io.ByteWriter
+	WriteString(string) (int, error)
+}
+
+// Render renders the parse tree n to the given writer.
+//
+// Rendering is done on a 'best effort' basis: calling Parse on the output of
+// Render will always result in something similar to the original tree, but it
+// is not necessarily an exact clone unless the original tree was 'well-formed'.
+// 'Well-formed' is not easily specified; the HTML5 specification is
+// complicated.
+//
+// Calling Parse on arbitrary input typically results in a 'well-formed' parse
+// tree. However, it is possible for Parse to yield a 'badly-formed' parse tree.
+// For example, in a 'well-formed' parse tree, no <a> element is a child of
+// another <a> element: parsing "<a><a>" results in two sibling elements.
+// Similarly, in a 'well-formed' parse tree, no <a> element is a child of a
+// <table> element: parsing "<p><table><a>" results in a <p> with two sibling
+// children; the <a> is reparented to the <table>'s parent. However, calling
+// Parse on "<a><table><a>" does not return an error, but the result has an <a>
+// element with an <a> child, and is therefore not 'well-formed'.
+//
+// Programmatically constructed trees are typically also 'well-formed', but it
+// is possible to construct a tree that looks innocuous but, when rendered and
+// re-parsed, results in a different tree. A simple example is that a solitary
+// text node would become a tree containing <html>, <head> and <body> elements.
+// Another example is that the programmatic equivalent of "a<head>b</head>c"
+// becomes "<html><head><head/><body>abc</body></html>".
+func Render(w io.Writer, n *Node) error {
+	if x, ok := w.(writer); ok {
+		return render(x, n)
+	}
+	buf := bufio.NewWriter(w)
+	if err := render(buf, n); err != nil {
+		return err
+	}
+	return buf.Flush()
+}
+
+// plaintextAbort is returned from render1 when a <plaintext> element
+// has been rendered. No more end tags should be rendered after that.
+var plaintextAbort = errors.New("html: internal error (plaintext abort)")
+
+func render(w writer, n *Node) error {
+	err := render1(w, n)
+	if err == plaintextAbort {
+		err = nil
+	}
+	return err
+}
+
+func render1(w writer, n *Node) error {
+	// Render non-element nodes; these are the easy cases.
+	switch n.Type {
+	case ErrorNode:
+		return errors.New("html: cannot render an ErrorNode node")
+	case TextNode:
+		return escape(w, n.Data)
+	case DocumentNode:
+		for c := n.FirstChild; c != nil; c = c.NextSibling {
+			if err := render1(w, c); err != nil {
+				return err
+			}
+		}
+		return nil
+	case ElementNode:
+		// No-op.
+	case CommentNode:
+		if _, err := w.WriteString("<!--"); err != nil {
+			return err
+		}
+		if _, err := w.WriteString(n.Data); err != nil {
+			return err
+		}
+		if _, err := w.WriteString("-->"); err != nil {
+			return err
+		}
+		return nil
+	case DoctypeNode:
+		if _, err := w.WriteString("<!DOCTYPE "); err != nil {
+			return err
+		}
+		if _, err := w.WriteString(n.Data); err != nil {
+			return err
+		}
+		if n.Attr != nil {
+			var p, s string
+			for _, a := range n.Attr {
+				switch a.Key {
+				case "public":
+					p = a.Val
+				case "system":
+					s = a.Val
+				}
+			}
+			if p != "" {
+				if _, err := w.WriteString(" PUBLIC "); err != nil {
+					return err
+				}
+				if err := writeQuoted(w, p); err != nil {
+					return err
+				}
+				if s != "" {
+					if err := w.WriteByte(' '); err != nil {
+						return err
+					}
+					if err := writeQuoted(w, s); err != nil {
+						return err
+					}
+				}
+			} else if s != "" {
+				if _, err := w.WriteString(" SYSTEM "); err != nil {
+					return err
+				}
+				if err := writeQuoted(w, s); err != nil {
+					return err
+				}
+			}
+		}
+		return w.WriteByte('>')
+	default:
+		return errors.New("html: unknown node type")
+	}
+
+	// Render the <xxx> opening tag.
+	if err := w.WriteByte('<'); err != nil {
+		return err
+	}
+	if _, err := w.WriteString(n.Data); err != nil {
+		return err
+	}
+	for _, a := range n.Attr {
+		if err := w.WriteByte(' '); err != nil {
+			return err
+		}
+		if a.Namespace != "" {
+			if _, err := w.WriteString(a.Namespace); err != nil {
+				return err
+			}
+			if err := w.WriteByte(':'); err != nil {
+				return err
+			}
+		}
+		if _, err := w.WriteString(a.Key); err != nil {
+			return err
+		}
+		if _, err := w.WriteString(`="`); err != nil {
+			return err
+		}
+		if err := escape(w, a.Val); err != nil {
+			return err
+		}
+		if err := w.WriteByte('"'); err != nil {
+			return err
+		}
+	}
+	if voidElements[n.Data] {
+		if n.FirstChild != nil {
+			return fmt.Errorf("html: void element <%s> has child nodes", n.Data)
+		}
+		_, err := w.WriteString("/>")
+		return err
+	}
+	if err := w.WriteByte('>'); err != nil {
+		return err
+	}
+
+	// Add initial newline where there is danger of a newline beging ignored.
+	if c := n.FirstChild; c != nil && c.Type == TextNode && strings.HasPrefix(c.Data, "\n") {
+		switch n.Data {
+		case "pre", "listing", "textarea":
+			if err := w.WriteByte('\n'); err != nil {
+				return err
+			}
+		}
+	}
+
+	// Render any child nodes.
+	switch n.Data {
+	case "iframe", "noembed", "noframes", "noscript", "plaintext", "script", "style", "xmp":
+		for c := n.FirstChild; c != nil; c = c.NextSibling {
+			if c.Type == TextNode {
+				if _, err := w.WriteString(c.Data); err != nil {
+					return err
+				}
+			} else {
+				if err := render1(w, c); err != nil {
+					return err
+				}
+			}
+		}
+		if n.Data == "plaintext" {
+			// Don't render anything else. <plaintext> must be the
+			// last element in the file, with no closing tag.
+			return plaintextAbort
+		}
+	default:
+		for c := n.FirstChild; c != nil; c = c.NextSibling {
+			if err := render1(w, c); err != nil {
+				return err
+			}
+		}
+	}
+
+	// Render the </xxx> closing tag.
+	if _, err := w.WriteString("</"); err != nil {
+		return err
+	}
+	if _, err := w.WriteString(n.Data); err != nil {
+		return err
+	}
+	return w.WriteByte('>')
+}
+
+// writeQuoted writes s to w surrounded by quotes. Normally it will use double
+// quotes, but if s contains a double quote, it will use single quotes.
+// It is used for writing the identifiers in a doctype declaration.
+// In valid HTML, they can't contain both types of quotes.
+func writeQuoted(w writer, s string) error {
+	var q byte = '"'
+	if strings.Contains(s, `"`) {
+		q = '\''
+	}
+	if err := w.WriteByte(q); err != nil {
+		return err
+	}
+	if _, err := w.WriteString(s); err != nil {
+		return err
+	}
+	if err := w.WriteByte(q); err != nil {
+		return err
+	}
+	return nil
+}
+
+// Section 12.1.2, "Elements", gives this list of void elements. Void elements
+// are those that can't have any contents.
+var voidElements = map[string]bool{
+	"area":    true,
+	"base":    true,
+	"br":      true,
+	"col":     true,
+	"command": true,
+	"embed":   true,
+	"hr":      true,
+	"img":     true,
+	"input":   true,
+	"keygen":  true,
+	"link":    true,
+	"meta":    true,
+	"param":   true,
+	"source":  true,
+	"track":   true,
+	"wbr":     true,
+}

vendor/k8s.io/apimachinery/pkg/util/httpstream/doc.go

@@ -0,0 +1,19 @@
+/*
+Copyright 2015 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package httpstream adds multiplexed streaming support to HTTP requests and
+// responses via connection upgrades.
+package httpstream // import "k8s.io/apimachinery/pkg/util/httpstream"

vendor/k8s.io/apimachinery/pkg/util/httpstream/httpstream.go

@@ -0,0 +1,149 @@
+/*
+Copyright 2015 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package httpstream
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+	"time"
+)
+
+const (
+	HeaderConnection               = "Connection"
+	HeaderUpgrade                  = "Upgrade"
+	HeaderProtocolVersion          = "X-Stream-Protocol-Version"
+	HeaderAcceptedProtocolVersions = "X-Accepted-Stream-Protocol-Versions"
+)
+
+// NewStreamHandler defines a function that is called when a new Stream is
+// received. If no error is returned, the Stream is accepted; otherwise,
+// the stream is rejected. After the reply frame has been sent, replySent is closed.
+type NewStreamHandler func(stream Stream, replySent <-chan struct{}) error
+
+// NoOpNewStreamHandler is a stream handler that accepts a new stream and
+// performs no other logic.
+func NoOpNewStreamHandler(stream Stream, replySent <-chan struct{}) error { return nil }
+
+// Dialer knows how to open a streaming connection to a server.
+type Dialer interface {
+
+	// Dial opens a streaming connection to a server using one of the protocols
+	// specified (in order of most preferred to least preferred).
+	Dial(protocols ...string) (Connection, string, error)
+}
+
+// UpgradeRoundTripper is a type of http.RoundTripper that is able to upgrade
+// HTTP requests to support multiplexed bidirectional streams. After RoundTrip()
+// is invoked, if the upgrade is successful, clients may retrieve the upgraded
+// connection by calling UpgradeRoundTripper.Connection().
+type UpgradeRoundTripper interface {
+	http.RoundTripper
+	// NewConnection validates the response and creates a new Connection.
+	NewConnection(resp *http.Response) (Connection, error)
+}
+
+// ResponseUpgrader knows how to upgrade HTTP requests and responses to
+// add streaming support to them.
+type ResponseUpgrader interface {
+	// UpgradeResponse upgrades an HTTP response to one that supports multiplexed
+	// streams. newStreamHandler will be called asynchronously whenever the
+	// other end of the upgraded connection creates a new stream.
+	UpgradeResponse(w http.ResponseWriter, req *http.Request, newStreamHandler NewStreamHandler) Connection
+}
+
+// Connection represents an upgraded HTTP connection.
+type Connection interface {
+	// CreateStream creates a new Stream with the supplied headers.
+	CreateStream(headers http.Header) (Stream, error)
+	// Close resets all streams and closes the connection.
+	Close() error
+	// CloseChan returns a channel that is closed when the underlying connection is closed.
+	CloseChan() <-chan bool
+	// SetIdleTimeout sets the amount of time the connection may remain idle before
+	// it is automatically closed.
+	SetIdleTimeout(timeout time.Duration)
+}
+
+// Stream represents a bidirectional communications channel that is part of an
+// upgraded connection.
+type Stream interface {
+	io.ReadWriteCloser
+	// Reset closes both directions of the stream, indicating that neither client
+	// or server can use it any more.
+	Reset() error
+	// Headers returns the headers used to create the stream.
+	Headers() http.Header
+	// Identifier returns the stream's ID.
+	Identifier() uint32
+}
+
+// IsUpgradeRequest returns true if the given request is a connection upgrade request
+func IsUpgradeRequest(req *http.Request) bool {
+	for _, h := range req.Header[http.CanonicalHeaderKey(HeaderConnection)] {
+		if strings.Contains(strings.ToLower(h), strings.ToLower(HeaderUpgrade)) {
+			return true
+		}
+	}
+	return false
+}
+
+func negotiateProtocol(clientProtocols, serverProtocols []string) string {
+	for i := range clientProtocols {
+		for j := range serverProtocols {
+			if clientProtocols[i] == serverProtocols[j] {
+				return clientProtocols[i]
+			}
+		}
+	}
+	return ""
+}
+
+// Handshake performs a subprotocol negotiation. If the client did request a
+// subprotocol, Handshake will select the first common value found in
+// serverProtocols. If a match is found, Handshake adds a response header
+// indicating the chosen subprotocol. If no match is found, HTTP forbidden is
+// returned, along with a response header containing the list of protocols the
+// server can accept.
+func Handshake(req *http.Request, w http.ResponseWriter, serverProtocols []string) (string, error) {
+	clientProtocols := req.Header[http.CanonicalHeaderKey(HeaderProtocolVersion)]
+	if len(clientProtocols) == 0 {
+		// Kube 1.0 clients didn't support subprotocol negotiation.
+		// TODO require clientProtocols once Kube 1.0 is no longer supported
+		return "", nil
+	}
+
+	if len(serverProtocols) == 0 {
+		// Kube 1.0 servers didn't support subprotocol negotiation. This is mainly for testing.
+		// TODO require serverProtocols once Kube 1.0 is no longer supported
+		return "", nil
+	}
+
+	negotiatedProtocol := negotiateProtocol(clientProtocols, serverProtocols)
+	if len(negotiatedProtocol) == 0 {
+		for i := range serverProtocols {
+			w.Header().Add(HeaderAcceptedProtocolVersions, serverProtocols[i])
+		}
+		err := fmt.Errorf("unable to upgrade: unable to negotiate protocol: client supports %v, server accepts %v", clientProtocols, serverProtocols)
+		http.Error(w, err.Error(), http.StatusForbidden)
+		return "", err
+	}
+
+	w.Header().Add(HeaderProtocolVersion, negotiatedProtocol)
+	return negotiatedProtocol, nil
+}

vendor/k8s.io/apimachinery/pkg/util/proxy/dial.go

@@ -0,0 +1,117 @@
+/*
+Copyright 2015 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package proxy
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"net"
+	"net/http"
+	"net/url"
+
+	"k8s.io/klog"
+
+	utilnet "k8s.io/apimachinery/pkg/util/net"
+	"k8s.io/apimachinery/third_party/forked/golang/netutil"
+)
+
+func DialURL(ctx context.Context, url *url.URL, transport http.RoundTripper) (net.Conn, error) {
+	dialAddr := netutil.CanonicalAddr(url)
+
+	dialer, err := utilnet.DialerFor(transport)
+	if err != nil {
+		klog.V(5).Infof("Unable to unwrap transport %T to get dialer: %v", transport, err)
+	}
+
+	switch url.Scheme {
+	case "http":
+		if dialer != nil {
+			return dialer(ctx, "tcp", dialAddr)
+		}
+		var d net.Dialer
+		return d.DialContext(ctx, "tcp", dialAddr)
+	case "https":
+		// Get the tls config from the transport if we recognize it
+		var tlsConfig *tls.Config
+		var tlsConn *tls.Conn
+		var err error
+		tlsConfig, err = utilnet.TLSClientConfig(transport)
+		if err != nil {
+			klog.V(5).Infof("Unable to unwrap transport %T to get at TLS config: %v", transport, err)
+		}
+
+		if dialer != nil {
+			// We have a dialer; use it to open the connection, then
+			// create a tls client using the connection.
+			netConn, err := dialer(ctx, "tcp", dialAddr)
+			if err != nil {
+				return nil, err
+			}
+			if tlsConfig == nil {
+				// tls.Client requires non-nil config
+				klog.Warningf("using custom dialer with no TLSClientConfig. Defaulting to InsecureSkipVerify")
+				// tls.Handshake() requires ServerName or InsecureSkipVerify
+				tlsConfig = &tls.Config{
+					InsecureSkipVerify: true,
+				}
+			} else if len(tlsConfig.ServerName) == 0 && !tlsConfig.InsecureSkipVerify {
+				// tls.Handshake() requires ServerName or InsecureSkipVerify
+				// infer the ServerName from the hostname we're connecting to.
+				inferredHost := dialAddr
+				if host, _, err := net.SplitHostPort(dialAddr); err == nil {
+					inferredHost = host
+				}
+				// Make a copy to avoid polluting the provided config
+				tlsConfigCopy := tlsConfig.Clone()
+				tlsConfigCopy.ServerName = inferredHost
+				tlsConfig = tlsConfigCopy
+			}
+			tlsConn = tls.Client(netConn, tlsConfig)
+			if err := tlsConn.Handshake(); err != nil {
+				netConn.Close()
+				return nil, err
+			}
+
+		} else {
+			// Dial. This Dial method does not allow to pass a context unfortunately
+			tlsConn, err = tls.Dial("tcp", dialAddr, tlsConfig)
+			if err != nil {
+				return nil, err
+			}
+		}
+
+		// Return if we were configured to skip validation
+		if tlsConfig != nil && tlsConfig.InsecureSkipVerify {
+			return tlsConn, nil
+		}
+
+		// Verify
+		host, _, _ := net.SplitHostPort(dialAddr)
+		if tlsConfig != nil && len(tlsConfig.ServerName) > 0 {
+			host = tlsConfig.ServerName
+		}
+		if err := tlsConn.VerifyHostname(host); err != nil {
+			tlsConn.Close()
+			return nil, err
+		}
+
+		return tlsConn, nil
+	default:
+		return nil, fmt.Errorf("Unknown scheme: %s", url.Scheme)
+	}
+}

vendor/k8s.io/apimachinery/pkg/util/proxy/doc.go

@@ -0,0 +1,18 @@
+/*
+Copyright 2014 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package proxy provides transport and upgrade support for proxies.
+package proxy // import "k8s.io/apimachinery/pkg/util/proxy"

vendor/k8s.io/apimachinery/pkg/util/proxy/transport.go

@@ -0,0 +1,259 @@
+/*
+Copyright 2014 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package proxy
+
+import (
+	"bytes"
+	"compress/gzip"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"path"
+	"strings"
+
+	"golang.org/x/net/html"
+	"golang.org/x/net/html/atom"
+	"k8s.io/klog"
+
+	"k8s.io/apimachinery/pkg/util/net"
+	"k8s.io/apimachinery/pkg/util/sets"
+)
+
+// atomsToAttrs states which attributes of which tags require URL substitution.
+// Sources: http://www.w3.org/TR/REC-html40/index/attributes.html
+//          http://www.w3.org/html/wg/drafts/html/master/index.html#attributes-1
+var atomsToAttrs = map[atom.Atom]sets.String{
+	atom.A:          sets.NewString("href"),
+	atom.Applet:     sets.NewString("codebase"),
+	atom.Area:       sets.NewString("href"),
+	atom.Audio:      sets.NewString("src"),
+	atom.Base:       sets.NewString("href"),
+	atom.Blockquote: sets.NewString("cite"),
+	atom.Body:       sets.NewString("background"),
+	atom.Button:     sets.NewString("formaction"),
+	atom.Command:    sets.NewString("icon"),
+	atom.Del:        sets.NewString("cite"),
+	atom.Embed:      sets.NewString("src"),
+	atom.Form:       sets.NewString("action"),
+	atom.Frame:      sets.NewString("longdesc", "src"),
+	atom.Head:       sets.NewString("profile"),
+	atom.Html:       sets.NewString("manifest"),
+	atom.Iframe:     sets.NewString("longdesc", "src"),
+	atom.Img:        sets.NewString("longdesc", "src", "usemap"),
+	atom.Input:      sets.NewString("src", "usemap", "formaction"),
+	atom.Ins:        sets.NewString("cite"),
+	atom.Link:       sets.NewString("href"),
+	atom.Object:     sets.NewString("classid", "codebase", "data", "usemap"),
+	atom.Q:          sets.NewString("cite"),
+	atom.Script:     sets.NewString("src"),
+	atom.Source:     sets.NewString("src"),
+	atom.Video:      sets.NewString("poster", "src"),
+
+	// TODO: css URLs hidden in style elements.
+}
+
+// Transport is a transport for text/html content that replaces URLs in html
+// content with the prefix of the proxy server
+type Transport struct {
+	Scheme      string
+	Host        string
+	PathPrepend string
+
+	http.RoundTripper
+}
+
+// RoundTrip implements the http.RoundTripper interface
+func (t *Transport) RoundTrip(req *http.Request) (*http.Response, error) {
+	// Add reverse proxy headers.
+	forwardedURI := path.Join(t.PathPrepend, req.URL.Path)
+	if strings.HasSuffix(req.URL.Path, "/") {
+		forwardedURI = forwardedURI + "/"
+	}
+	req.Header.Set("X-Forwarded-Uri", forwardedURI)
+	if len(t.Host) > 0 {
+		req.Header.Set("X-Forwarded-Host", t.Host)
+	}
+	if len(t.Scheme) > 0 {
+		req.Header.Set("X-Forwarded-Proto", t.Scheme)
+	}
+
+	rt := t.RoundTripper
+	if rt == nil {
+		rt = http.DefaultTransport
+	}
+	resp, err := rt.RoundTrip(req)
+
+	if err != nil {
+		message := fmt.Sprintf("Error: '%s'\nTrying to reach: '%v'", err.Error(), req.URL.String())
+		resp = &http.Response{
+			StatusCode: http.StatusServiceUnavailable,
+			Body:       ioutil.NopCloser(strings.NewReader(message)),
+		}
+		return resp, nil
+	}
+
+	if redirect := resp.Header.Get("Location"); redirect != "" {
+		resp.Header.Set("Location", t.rewriteURL(redirect, req.URL, req.Host))
+		return resp, nil
+	}
+
+	cType := resp.Header.Get("Content-Type")
+	cType = strings.TrimSpace(strings.SplitN(cType, ";", 2)[0])
+	if cType != "text/html" {
+		// Do nothing, simply pass through
+		return resp, nil
+	}
+
+	return t.rewriteResponse(req, resp)
+}
+
+var _ = net.RoundTripperWrapper(&Transport{})
+
+func (rt *Transport) WrappedRoundTripper() http.RoundTripper {
+	return rt.RoundTripper
+}
+
+// rewriteURL rewrites a single URL to go through the proxy, if the URL refers
+// to the same host as sourceURL, which is the page on which the target URL
+// occurred, or if the URL matches the sourceRequestHost. If any error occurs (e.g.
+// parsing), it returns targetURL.
+func (t *Transport) rewriteURL(targetURL string, sourceURL *url.URL, sourceRequestHost string) string {
+	url, err := url.Parse(targetURL)
+	if err != nil {
+		return targetURL
+	}
+
+	// Example:
+	//      When API server processes a proxy request to a service (e.g. /api/v1/namespace/foo/service/bar/proxy/),
+	//      the sourceURL.Host (i.e. req.URL.Host) is the endpoint IP address of the service. The
+	//      sourceRequestHost (i.e. req.Host) is the Host header that specifies the host on which the
+	//      URL is sought, which can be different from sourceURL.Host. For example, if user sends the
+	//      request through "kubectl proxy" locally (i.e. localhost:8001/api/v1/namespace/foo/service/bar/proxy/),
+	//      sourceRequestHost is "localhost:8001".
+	//
+	//      If the service's response URL contains non-empty host, and url.Host is equal to either sourceURL.Host
+	//      or sourceRequestHost, we should not consider the returned URL to be a completely different host.
+	//      It's the API server's responsibility to rewrite a same-host-and-absolute-path URL and append the
+	//      necessary URL prefix (i.e. /api/v1/namespace/foo/service/bar/proxy/).
+	isDifferentHost := url.Host != "" && url.Host != sourceURL.Host && url.Host != sourceRequestHost
+	isRelative := !strings.HasPrefix(url.Path, "/")
+	if isDifferentHost || isRelative {
+		return targetURL
+	}
+
+	// Do not rewrite scheme and host if the Transport has empty scheme and host
+	// when targetURL already contains the sourceRequestHost
+	if !(url.Host == sourceRequestHost && t.Scheme == "" && t.Host == "") {
+		url.Scheme = t.Scheme
+		url.Host = t.Host
+	}
+
+	origPath := url.Path
+	// Do not rewrite URL if the sourceURL already contains the necessary prefix.
+	if strings.HasPrefix(url.Path, t.PathPrepend) {
+		return url.String()
+	}
+	url.Path = path.Join(t.PathPrepend, url.Path)
+	if strings.HasSuffix(origPath, "/") {
+		// Add back the trailing slash, which was stripped by path.Join().
+		url.Path += "/"
+	}
+
+	return url.String()
+}
+
+// rewriteHTML scans the HTML for tags with url-valued attributes, and updates
+// those values with the urlRewriter function. The updated HTML is output to the
+// writer.
+func rewriteHTML(reader io.Reader, writer io.Writer, urlRewriter func(string) string) error {
+	// Note: This assumes the content is UTF-8.
+	tokenizer := html.NewTokenizer(reader)
+
+	var err error
+	for err == nil {
+		tokenType := tokenizer.Next()
+		switch tokenType {
+		case html.ErrorToken:
+			err = tokenizer.Err()
+		case html.StartTagToken, html.SelfClosingTagToken:
+			token := tokenizer.Token()
+			if urlAttrs, ok := atomsToAttrs[token.DataAtom]; ok {
+				for i, attr := range token.Attr {
+					if urlAttrs.Has(attr.Key) {
+						token.Attr[i].Val = urlRewriter(attr.Val)
+					}
+				}
+			}
+			_, err = writer.Write([]byte(token.String()))
+		default:
+			_, err = writer.Write(tokenizer.Raw())
+		}
+	}
+	if err != io.EOF {
+		return err
+	}
+	return nil
+}
+
+// rewriteResponse modifies an HTML response by updating absolute links referring
+// to the original host to instead refer to the proxy transport.
+func (t *Transport) rewriteResponse(req *http.Request, resp *http.Response) (*http.Response, error) {
+	origBody := resp.Body
+	defer origBody.Close()
+
+	newContent := &bytes.Buffer{}
+	var reader io.Reader = origBody
+	var writer io.Writer = newContent
+	encoding := resp.Header.Get("Content-Encoding")
+	switch encoding {
+	case "gzip":
+		var err error
+		reader, err = gzip.NewReader(reader)
+		if err != nil {
+			return nil, fmt.Errorf("errorf making gzip reader: %v", err)
+		}
+		gzw := gzip.NewWriter(writer)
+		defer gzw.Close()
+		writer = gzw
+	// TODO: support flate, other encodings.
+	case "":
+		// This is fine
+	default:
+		// Some encoding we don't understand-- don't try to parse this
+		klog.Errorf("Proxy encountered encoding %v for text/html; can't understand this so not fixing links.", encoding)
+		return resp, nil
+	}
+
+	urlRewriter := func(targetUrl string) string {
+		return t.rewriteURL(targetUrl, req.URL, req.Host)
+	}
+	err := rewriteHTML(reader, writer, urlRewriter)
+	if err != nil {
+		klog.Errorf("Failed to rewrite URLs: %v", err)
+		return resp, err
+	}
+
+	resp.Body = ioutil.NopCloser(newContent)
+	// Update header node with new content-length
+	// TODO: Remove any hash/signature headers here?
+	resp.Header.Del("Content-Length")
+	resp.ContentLength = int64(newContent.Len())
+
+	return resp, err
+}

vendor/k8s.io/apimachinery/pkg/util/proxy/upgradeaware.go

@@ -0,0 +1,493 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package proxy
+
+import (
+	"bufio"
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net"
+	"net/http"
+	"net/http/httputil"
+	"net/url"
+	"strings"
+	"time"
+
+	"k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/apimachinery/pkg/util/httpstream"
+	utilnet "k8s.io/apimachinery/pkg/util/net"
+	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
+
+	"github.com/mxk/go-flowrate/flowrate"
+	"k8s.io/klog"
+)
+
+// UpgradeRequestRoundTripper provides an additional method to decorate a request
+// with any authentication or other protocol level information prior to performing
+// an upgrade on the server. Any response will be handled by the intercepting
+// proxy.
+type UpgradeRequestRoundTripper interface {
+	http.RoundTripper
+	// WrapRequest takes a valid HTTP request and returns a suitably altered version
+	// of request with any HTTP level values required to complete the request half of
+	// an upgrade on the server. It does not get a chance to see the response and
+	// should bypass any request side logic that expects to see the response.
+	WrapRequest(*http.Request) (*http.Request, error)
+}
+
+// UpgradeAwareHandler is a handler for proxy requests that may require an upgrade
+type UpgradeAwareHandler struct {
+	// UpgradeRequired will reject non-upgrade connections if true.
+	UpgradeRequired bool
+	// Location is the location of the upstream proxy. It is used as the location to Dial on the upstream server
+	// for upgrade requests unless UseRequestLocationOnUpgrade is true.
+	Location *url.URL
+	// Transport provides an optional round tripper to use to proxy. If nil, the default proxy transport is used
+	Transport http.RoundTripper
+	// UpgradeTransport, if specified, will be used as the backend transport when upgrade requests are provided.
+	// This allows clients to disable HTTP/2.
+	UpgradeTransport UpgradeRequestRoundTripper
+	// WrapTransport indicates whether the provided Transport should be wrapped with default proxy transport behavior (URL rewriting, X-Forwarded-* header setting)
+	WrapTransport bool
+	// InterceptRedirects determines whether the proxy should sniff backend responses for redirects,
+	// following them as necessary.
+	InterceptRedirects bool
+	// RequireSameHostRedirects only allows redirects to the same host. It is only used if InterceptRedirects=true.
+	RequireSameHostRedirects bool
+	// UseRequestLocation will use the incoming request URL when talking to the backend server.
+	UseRequestLocation bool
+	// FlushInterval controls how often the standard HTTP proxy will flush content from the upstream.
+	FlushInterval time.Duration
+	// MaxBytesPerSec controls the maximum rate for an upstream connection. No rate is imposed if the value is zero.
+	MaxBytesPerSec int64
+	// Responder is passed errors that occur while setting up proxying.
+	Responder ErrorResponder
+}
+
+const defaultFlushInterval = 200 * time.Millisecond
+
+// ErrorResponder abstracts error reporting to the proxy handler to remove the need to hardcode a particular
+// error format.
+type ErrorResponder interface {
+	Error(w http.ResponseWriter, req *http.Request, err error)
+}
+
+// SimpleErrorResponder is the legacy implementation of ErrorResponder for callers that only
+// service a single request/response per proxy.
+type SimpleErrorResponder interface {
+	Error(err error)
+}
+
+func NewErrorResponder(r SimpleErrorResponder) ErrorResponder {
+	return simpleResponder{r}
+}
+
+type simpleResponder struct {
+	responder SimpleErrorResponder
+}
+
+func (r simpleResponder) Error(w http.ResponseWriter, req *http.Request, err error) {
+	r.responder.Error(err)
+}
+
+// upgradeRequestRoundTripper implements proxy.UpgradeRequestRoundTripper.
+type upgradeRequestRoundTripper struct {
+	http.RoundTripper
+	upgrader http.RoundTripper
+}
+
+var (
+	_ UpgradeRequestRoundTripper  = &upgradeRequestRoundTripper{}
+	_ utilnet.RoundTripperWrapper = &upgradeRequestRoundTripper{}
+)
+
+// WrappedRoundTripper returns the round tripper that a caller would use.
+func (rt *upgradeRequestRoundTripper) WrappedRoundTripper() http.RoundTripper {
+	return rt.RoundTripper
+}
+
+// WriteToRequest calls the nested upgrader and then copies the returned request
+// fields onto the passed request.
+func (rt *upgradeRequestRoundTripper) WrapRequest(req *http.Request) (*http.Request, error) {
+	resp, err := rt.upgrader.RoundTrip(req)
+	if err != nil {
+		return nil, err
+	}
+	return resp.Request, nil
+}
+
+// onewayRoundTripper captures the provided request - which is assumed to have
+// been modified by other round trippers - and then returns a fake response.
+type onewayRoundTripper struct{}
+
+// RoundTrip returns a simple 200 OK response that captures the provided request.
+func (onewayRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
+	return &http.Response{
+		Status:     "200 OK",
+		StatusCode: http.StatusOK,
+		Body:       ioutil.NopCloser(&bytes.Buffer{}),
+		Request:    req,
+	}, nil
+}
+
+// MirrorRequest is a round tripper that can be called to get back the calling request as
+// the core round tripper in a chain.
+var MirrorRequest http.RoundTripper = onewayRoundTripper{}
+
+// NewUpgradeRequestRoundTripper takes two round trippers - one for the underlying TCP connection, and
+// one that is able to write headers to an HTTP request. The request rt is used to set the request headers
+// and that is written to the underlying connection rt.
+func NewUpgradeRequestRoundTripper(connection, request http.RoundTripper) UpgradeRequestRoundTripper {
+	return &upgradeRequestRoundTripper{
+		RoundTripper: connection,
+		upgrader:     request,
+	}
+}
+
+// normalizeLocation returns the result of parsing the full URL, with scheme set to http if missing
+func normalizeLocation(location *url.URL) *url.URL {
+	normalized, _ := url.Parse(location.String())
+	if len(normalized.Scheme) == 0 {
+		normalized.Scheme = "http"
+	}
+	return normalized
+}
+
+// NewUpgradeAwareHandler creates a new proxy handler with a default flush interval. Responder is required for returning
+// errors to the caller.
+func NewUpgradeAwareHandler(location *url.URL, transport http.RoundTripper, wrapTransport, upgradeRequired bool, responder ErrorResponder) *UpgradeAwareHandler {
+	return &UpgradeAwareHandler{
+		Location:        normalizeLocation(location),
+		Transport:       transport,
+		WrapTransport:   wrapTransport,
+		UpgradeRequired: upgradeRequired,
+		FlushInterval:   defaultFlushInterval,
+		Responder:       responder,
+	}
+}
+
+// ServeHTTP handles the proxy request
+func (h *UpgradeAwareHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
+	if h.tryUpgrade(w, req) {
+		return
+	}
+	if h.UpgradeRequired {
+		h.Responder.Error(w, req, errors.NewBadRequest("Upgrade request required"))
+		return
+	}
+
+	loc := *h.Location
+	loc.RawQuery = req.URL.RawQuery
+
+	// If original request URL ended in '/', append a '/' at the end of the
+	// of the proxy URL
+	if !strings.HasSuffix(loc.Path, "/") && strings.HasSuffix(req.URL.Path, "/") {
+		loc.Path += "/"
+	}
+
+	// From pkg/genericapiserver/endpoints/handlers/proxy.go#ServeHTTP:
+	// Redirect requests with an empty path to a location that ends with a '/'
+	// This is essentially a hack for http://issue.k8s.io/4958.
+	// Note: Keep this code after tryUpgrade to not break that flow.
+	if len(loc.Path) == 0 {
+		var queryPart string
+		if len(req.URL.RawQuery) > 0 {
+			queryPart = "?" + req.URL.RawQuery
+		}
+		w.Header().Set("Location", req.URL.Path+"/"+queryPart)
+		w.WriteHeader(http.StatusMovedPermanently)
+		return
+	}
+
+	if h.Transport == nil || h.WrapTransport {
+		h.Transport = h.defaultProxyTransport(req.URL, h.Transport)
+	}
+
+	// WithContext creates a shallow clone of the request with the new context.
+	newReq := req.WithContext(context.Background())
+	newReq.Header = utilnet.CloneHeader(req.Header)
+	if !h.UseRequestLocation {
+		newReq.URL = &loc
+	}
+
+	proxy := httputil.NewSingleHostReverseProxy(&url.URL{Scheme: h.Location.Scheme, Host: h.Location.Host})
+	proxy.Transport = h.Transport
+	proxy.FlushInterval = h.FlushInterval
+	proxy.ServeHTTP(maybeWrapFlushHeadersWriter(w), newReq)
+}
+
+// maybeWrapFlushHeadersWriter wraps the given writer to force flushing headers prior to writing the response body.
+// if the given writer does not support http.Flusher, http.Hijacker, and http.CloseNotifier, the original writer is returned.
+// TODO(liggitt): drop this once https://github.com/golang/go/issues/31125 is fixed
+func maybeWrapFlushHeadersWriter(w http.ResponseWriter) http.ResponseWriter {
+	flusher, isFlusher := w.(http.Flusher)
+	hijacker, isHijacker := w.(http.Hijacker)
+	closeNotifier, isCloseNotifier := w.(http.CloseNotifier)
+	// flusher, hijacker, and closeNotifier are all used by the ReverseProxy implementation.
+	// if the given writer can't support all three, return the original writer.
+	if !isFlusher || !isHijacker || !isCloseNotifier {
+		return w
+	}
+	return &flushHeadersWriter{w, flusher, hijacker, closeNotifier}
+}
+
+type flushHeadersWriter struct {
+	http.ResponseWriter
+	http.Flusher
+	http.Hijacker
+	http.CloseNotifier
+}
+
+func (w *flushHeadersWriter) WriteHeader(code int) {
+	w.ResponseWriter.WriteHeader(code)
+	w.Flusher.Flush()
+}
+
+// tryUpgrade returns true if the request was handled.
+func (h *UpgradeAwareHandler) tryUpgrade(w http.ResponseWriter, req *http.Request) bool {
+	if !httpstream.IsUpgradeRequest(req) {
+		klog.V(6).Infof("Request was not an upgrade")
+		return false
+	}
+
+	var (
+		backendConn net.Conn
+		rawResponse []byte
+		err         error
+	)
+
+	location := *h.Location
+	if h.UseRequestLocation {
+		location = *req.URL
+		location.Scheme = h.Location.Scheme
+		location.Host = h.Location.Host
+	}
+
+	clone := utilnet.CloneRequest(req)
+	// Only append X-Forwarded-For in the upgrade path, since httputil.NewSingleHostReverseProxy
+	// handles this in the non-upgrade path.
+	utilnet.AppendForwardedForHeader(clone)
+	if h.InterceptRedirects {
+		klog.V(6).Infof("Connecting to backend proxy (intercepting redirects) %s\n  Headers: %v", &location, clone.Header)
+		backendConn, rawResponse, err = utilnet.ConnectWithRedirects(req.Method, &location, clone.Header, req.Body, utilnet.DialerFunc(h.DialForUpgrade), h.RequireSameHostRedirects)
+	} else {
+		klog.V(6).Infof("Connecting to backend proxy (direct dial) %s\n  Headers: %v", &location, clone.Header)
+		clone.URL = &location
+		backendConn, err = h.DialForUpgrade(clone)
+	}
+	if err != nil {
+		klog.V(6).Infof("Proxy connection error: %v", err)
+		h.Responder.Error(w, req, err)
+		return true
+	}
+	defer backendConn.Close()
+
+	// determine the http response code from the backend by reading from rawResponse+backendConn
+	backendHTTPResponse, headerBytes, err := getResponse(io.MultiReader(bytes.NewReader(rawResponse), backendConn))
+	if err != nil {
+		klog.V(6).Infof("Proxy connection error: %v", err)
+		h.Responder.Error(w, req, err)
+		return true
+	}
+	if len(headerBytes) > len(rawResponse) {
+		// we read beyond the bytes stored in rawResponse, update rawResponse to the full set of bytes read from the backend
+		rawResponse = headerBytes
+	}
+
+	// Once the connection is hijacked, the ErrorResponder will no longer work, so
+	// hijacking should be the last step in the upgrade.
+	requestHijacker, ok := w.(http.Hijacker)
+	if !ok {
+		klog.V(6).Infof("Unable to hijack response writer: %T", w)
+		h.Responder.Error(w, req, fmt.Errorf("request connection cannot be hijacked: %T", w))
+		return true
+	}
+	requestHijackedConn, _, err := requestHijacker.Hijack()
+	if err != nil {
+		klog.V(6).Infof("Unable to hijack response: %v", err)
+		h.Responder.Error(w, req, fmt.Errorf("error hijacking connection: %v", err))
+		return true
+	}
+	defer requestHijackedConn.Close()
+
+	if backendHTTPResponse.StatusCode != http.StatusSwitchingProtocols {
+		// If the backend did not upgrade the request, echo the response from the backend to the client and return, closing the connection.
+		klog.V(6).Infof("Proxy upgrade error, status code %d", backendHTTPResponse.StatusCode)
+		// set read/write deadlines
+		deadline := time.Now().Add(10 * time.Second)
+		backendConn.SetReadDeadline(deadline)
+		requestHijackedConn.SetWriteDeadline(deadline)
+		// write the response to the client
+		err := backendHTTPResponse.Write(requestHijackedConn)
+		if err != nil && !strings.Contains(err.Error(), "use of closed network connection") {
+			klog.Errorf("Error proxying data from backend to client: %v", err)
+		}
+		// Indicate we handled the request
+		return true
+	}
+
+	// Forward raw response bytes back to client.
+	if len(rawResponse) > 0 {
+		klog.V(6).Infof("Writing %d bytes to hijacked connection", len(rawResponse))
+		if _, err = requestHijackedConn.Write(rawResponse); err != nil {
+			utilruntime.HandleError(fmt.Errorf("Error proxying response from backend to client: %v", err))
+		}
+	}
+
+	// Proxy the connection. This is bidirectional, so we need a goroutine
+	// to copy in each direction. Once one side of the connection exits, we
+	// exit the function which performs cleanup and in the process closes
+	// the other half of the connection in the defer.
+	writerComplete := make(chan struct{})
+	readerComplete := make(chan struct{})
+
+	go func() {
+		var writer io.WriteCloser
+		if h.MaxBytesPerSec > 0 {
+			writer = flowrate.NewWriter(backendConn, h.MaxBytesPerSec)
+		} else {
+			writer = backendConn
+		}
+		_, err := io.Copy(writer, requestHijackedConn)
+		if err != nil && !strings.Contains(err.Error(), "use of closed network connection") {
+			klog.Errorf("Error proxying data from client to backend: %v", err)
+		}
+		close(writerComplete)
+	}()
+
+	go func() {
+		var reader io.ReadCloser
+		if h.MaxBytesPerSec > 0 {
+			reader = flowrate.NewReader(backendConn, h.MaxBytesPerSec)
+		} else {
+			reader = backendConn
+		}
+		_, err := io.Copy(requestHijackedConn, reader)
+		if err != nil && !strings.Contains(err.Error(), "use of closed network connection") {
+			klog.Errorf("Error proxying data from backend to client: %v", err)
+		}
+		close(readerComplete)
+	}()
+
+	// Wait for one half the connection to exit. Once it does the defer will
+	// clean up the other half of the connection.
+	select {
+	case <-writerComplete:
+	case <-readerComplete:
+	}
+	klog.V(6).Infof("Disconnecting from backend proxy %s\n  Headers: %v", &location, clone.Header)
+
+	return true
+}
+
+func (h *UpgradeAwareHandler) Dial(req *http.Request) (net.Conn, error) {
+	return dial(req, h.Transport)
+}
+
+func (h *UpgradeAwareHandler) DialForUpgrade(req *http.Request) (net.Conn, error) {
+	if h.UpgradeTransport == nil {
+		return dial(req, h.Transport)
+	}
+	updatedReq, err := h.UpgradeTransport.WrapRequest(req)
+	if err != nil {
+		return nil, err
+	}
+	return dial(updatedReq, h.UpgradeTransport)
+}
+
+// getResponseCode reads a http response from the given reader, returns the response,
+// the bytes read from the reader, and any error encountered
+func getResponse(r io.Reader) (*http.Response, []byte, error) {
+	rawResponse := bytes.NewBuffer(make([]byte, 0, 256))
+	// Save the bytes read while reading the response headers into the rawResponse buffer
+	resp, err := http.ReadResponse(bufio.NewReader(io.TeeReader(r, rawResponse)), nil)
+	if err != nil {
+		return nil, nil, err
+	}
+	// return the http response and the raw bytes consumed from the reader in the process
+	return resp, rawResponse.Bytes(), nil
+}
+
+// dial dials the backend at req.URL and writes req to it.
+func dial(req *http.Request, transport http.RoundTripper) (net.Conn, error) {
+	conn, err := DialURL(req.Context(), req.URL, transport)
+	if err != nil {
+		return nil, fmt.Errorf("error dialing backend: %v", err)
+	}
+
+	if err = req.Write(conn); err != nil {
+		conn.Close()
+		return nil, fmt.Errorf("error sending request: %v", err)
+	}
+
+	return conn, err
+}
+
+var _ utilnet.Dialer = &UpgradeAwareHandler{}
+
+func (h *UpgradeAwareHandler) defaultProxyTransport(url *url.URL, internalTransport http.RoundTripper) http.RoundTripper {
+	scheme := url.Scheme
+	host := url.Host
+	suffix := h.Location.Path
+	if strings.HasSuffix(url.Path, "/") && !strings.HasSuffix(suffix, "/") {
+		suffix += "/"
+	}
+	pathPrepend := strings.TrimSuffix(url.Path, suffix)
+	rewritingTransport := &Transport{
+		Scheme:       scheme,
+		Host:         host,
+		PathPrepend:  pathPrepend,
+		RoundTripper: internalTransport,
+	}
+	return &corsRemovingTransport{
+		RoundTripper: rewritingTransport,
+	}
+}
+
+// corsRemovingTransport is a wrapper for an internal transport. It removes CORS headers
+// from the internal response.
+// Implements pkg/util/net.RoundTripperWrapper
+type corsRemovingTransport struct {
+	http.RoundTripper
+}
+
+var _ = utilnet.RoundTripperWrapper(&corsRemovingTransport{})
+
+func (rt *corsRemovingTransport) RoundTrip(req *http.Request) (*http.Response, error) {
+	resp, err := rt.RoundTripper.RoundTrip(req)
+	if err != nil {
+		return nil, err
+	}
+	removeCORSHeaders(resp)
+	return resp, nil
+}
+
+func (rt *corsRemovingTransport) WrappedRoundTripper() http.RoundTripper {
+	return rt.RoundTripper
+}
+
+// removeCORSHeaders strip CORS headers sent from the backend
+// This should be called on all responses before returning
+func removeCORSHeaders(resp *http.Response) {
+	resp.Header.Del("Access-Control-Allow-Credentials")
+	resp.Header.Del("Access-Control-Allow-Headers")
+	resp.Header.Del("Access-Control-Allow-Methods")
+	resp.Header.Del("Access-Control-Allow-Origin")
+}

vendor/k8s.io/apimachinery/third_party/forked/golang/netutil/addr.go

@@ -0,0 +1,27 @@
+package netutil
+
+import (
+	"net/url"
+	"strings"
+)
+
+// FROM: http://golang.org/src/net/http/client.go
+// Given a string of the form "host", "host:port", or "[ipv6::address]:port",
+// return true if the string includes a port.
+func hasPort(s string) bool { return strings.LastIndex(s, ":") > strings.LastIndex(s, "]") }
+
+// FROM: http://golang.org/src/net/http/transport.go
+var portMap = map[string]string{
+	"http":  "80",
+	"https": "443",
+}
+
+// FROM: http://golang.org/src/net/http/transport.go
+// canonicalAddr returns url.Host but always with a ":port" suffix
+func CanonicalAddr(url *url.URL) string {
+	addr := url.Host
+	if !hasPort(addr) {
+		return addr + ":" + portMap[url.Scheme]
+	}
+	return addr
+}

vendor/modules.txt

@@ -34,15 +34,17 @@ github.com/konsorten/go-windows-terminal-sequences
 github.com/modern-go/concurrent
 # github.com/modern-go/reflect2 v1.0.1
 github.com/modern-go/reflect2
+# github.com/mxk/go-flowrate v0.0.0-20140419014527-cca7078d478f
+github.com/mxk/go-flowrate/flowrate
 # github.com/rancher/norman v0.0.0-20190704000224-043a1c919df3 => ../norman
 github.com/rancher/norman/pkg/authorization
 github.com/rancher/norman/pkg/types
 github.com/rancher/norman/pkg/types/convert
+github.com/rancher/norman/pkg/types/values
 github.com/rancher/norman/pkg/api/builtin
 github.com/rancher/norman/pkg/store/proxy
 github.com/rancher/norman/pkg/api
 github.com/rancher/norman/pkg/subscribe
-github.com/rancher/norman/pkg/types/values
 github.com/rancher/norman/pkg/urlbuilder
 github.com/rancher/norman/pkg/httperror
 github.com/rancher/norman/pkg/types/slice
@@ -59,8 +61,8 @@ github.com/rancher/norman/pkg/parse
 github.com/rancher/norman/pkg/parse/builder
 # github.com/rancher/wrangler v0.1.4
 github.com/rancher/wrangler/pkg/signals
-github.com/rancher/wrangler/pkg/merr
 github.com/rancher/wrangler/pkg/kubeconfig
+github.com/rancher/wrangler/pkg/merr
 github.com/rancher/wrangler/pkg/start
 github.com/rancher/wrangler/pkg/name
 github.com/rancher/wrangler/pkg/generic
@@ -82,6 +84,8 @@ github.com/urfave/cli
 golang.org/x/crypto/ssh/terminal
 # golang.org/x/net v0.0.0-20190311183353-d8887717615a
 golang.org/x/net/http2
+golang.org/x/net/html
+golang.org/x/net/html/atom
 golang.org/x/net/http/httpguts
 golang.org/x/net/http2/hpack
 golang.org/x/net/idna
@@ -165,6 +169,8 @@ k8s.io/apiextensions-apiserver/pkg/client/informers/externalversions/internalint
 # k8s.io/apimachinery v0.0.0-20190404173353-6a84e37a896d
 k8s.io/apimachinery/pkg/runtime/schema
 k8s.io/apimachinery/pkg/apis/meta/v1
+k8s.io/apimachinery/pkg/util/net
+k8s.io/apimachinery/pkg/util/proxy
 k8s.io/apimachinery/pkg/util/rand
 k8s.io/apimachinery/pkg/api/equality
 k8s.io/apimachinery/pkg/labels
@@ -184,8 +190,9 @@ k8s.io/apimachinery/pkg/runtime/serializer/json
 k8s.io/apimachinery/pkg/runtime/serializer/streaming
 k8s.io/apimachinery/pkg/runtime/serializer/versioning
 k8s.io/apimachinery/pkg/api/errors
-k8s.io/apimachinery/pkg/util/net
 k8s.io/apimachinery/pkg/util/sets
+k8s.io/apimachinery/pkg/util/httpstream
+k8s.io/apimachinery/third_party/forked/golang/netutil
 k8s.io/apimachinery/pkg/util/json
 k8s.io/apimachinery/pkg/version
 k8s.io/apimachinery/pkg/api/validation/path
@@ -212,6 +219,7 @@ k8s.io/apiserver/pkg/apis/audit
 # k8s.io/client-go v11.0.1-0.20190409021438-1a26190bd76a+incompatible
 k8s.io/client-go/dynamic
 k8s.io/client-go/rest
+k8s.io/client-go/transport
 k8s.io/client-go/discovery
 k8s.io/client-go/kubernetes
 k8s.io/client-go/informers/rbac/v1
@@ -223,13 +231,12 @@ k8s.io/client-go/plugin/pkg/client/auth/exec
 k8s.io/client-go/rest/watch
 k8s.io/client-go/tools/clientcmd/api
 k8s.io/client-go/tools/metrics
-k8s.io/client-go/transport
 k8s.io/client-go/util/cert
 k8s.io/client-go/util/flowcontrol
+k8s.io/client-go/tools/clientcmd
 k8s.io/client-go/kubernetes/scheme
 k8s.io/client-go/informers
 k8s.io/client-go/informers/rbac
-k8s.io/client-go/tools/clientcmd
 k8s.io/client-go/kubernetes/typed/admissionregistration/v1beta1
 k8s.io/client-go/kubernetes/typed/apps/v1
 k8s.io/client-go/kubernetes/typed/apps/v1beta1
@@ -274,6 +281,9 @@ k8s.io/client-go/pkg/apis/clientauthentication/v1alpha1
 k8s.io/client-go/pkg/apis/clientauthentication/v1beta1
 k8s.io/client-go/util/connrotation
 k8s.io/client-go/util/keyutil
+k8s.io/client-go/tools/auth
+k8s.io/client-go/tools/clientcmd/api/latest
+k8s.io/client-go/util/homedir
 k8s.io/client-go/informers/admissionregistration
 k8s.io/client-go/informers/apps
 k8s.io/client-go/informers/auditregistration
@@ -292,10 +302,8 @@ k8s.io/client-go/informers/settings
 k8s.io/client-go/informers/storage
 k8s.io/client-go/informers/rbac/v1alpha1
 k8s.io/client-go/informers/rbac/v1beta1
-k8s.io/client-go/tools/auth
-k8s.io/client-go/tools/clientcmd/api/latest
-k8s.io/client-go/util/homedir
 k8s.io/client-go/tools/reference
+k8s.io/client-go/tools/clientcmd/api/v1
 k8s.io/client-go/informers/admissionregistration/v1beta1
 k8s.io/client-go/informers/apps/v1
 k8s.io/client-go/informers/apps/v1beta1
@@ -327,7 +335,6 @@ k8s.io/client-go/informers/storage/v1alpha1
 k8s.io/client-go/informers/storage/v1beta1
 k8s.io/client-go/listers/rbac/v1alpha1
 k8s.io/client-go/listers/rbac/v1beta1
-k8s.io/client-go/tools/clientcmd/api/v1
 k8s.io/client-go/listers/admissionregistration/v1beta1
 k8s.io/client-go/listers/apps/v1
 k8s.io/client-go/listers/apps/v1beta1