mirror of
https://github.com/kata-containers/kata-containers.git
synced 2025-09-01 08:56:32 +00:00
vendor: update govmm
bring fixes for the 9p filesystem
shortlog:
abca6f3 Add multidevs option to fsdev
Signed-off-by: Julio Montes <julio.montes@intel.com>
This commit is contained in:
Julio Montes
@@ -23,7 +23,6 @@ require (
|
|||||||
github.com/docker/distribution v2.7.1+incompatible // indirect
|
github.com/docker/distribution v2.7.1+incompatible // indirect
|
||||||
github.com/docker/docker v1.13.1 // indirect
|
github.com/docker/docker v1.13.1 // indirect
|
||||||
github.com/docker/go-events v0.0.0-20190806004212-e31b211e4f1c // indirect
|
github.com/docker/go-events v0.0.0-20190806004212-e31b211e4f1c // indirect
|
||||||
github.com/docker/go-units v0.3.3
|
|
||||||
github.com/go-ini/ini v1.28.2
|
github.com/go-ini/ini v1.28.2
|
||||||
github.com/go-openapi/errors v0.18.0
|
github.com/go-openapi/errors v0.18.0
|
||||||
github.com/go-openapi/runtime v0.18.0
|
github.com/go-openapi/runtime v0.18.0
|
||||||
@@ -33,10 +32,8 @@ require (
|
|||||||
github.com/gogo/googleapis v1.4.0 // indirect
|
github.com/gogo/googleapis v1.4.0 // indirect
|
||||||
github.com/gogo/protobuf v1.3.1
|
github.com/gogo/protobuf v1.3.1
|
||||||
github.com/hashicorp/go-multierror v1.0.0
|
github.com/hashicorp/go-multierror v1.0.0
|
||||||
github.com/hashicorp/yamux v0.0.0-20190923154419-df201c70410d
|
github.com/intel/govmm v0.0.0-20200724170648-af9e34b91ae9
|
||||||
github.com/intel/govmm v0.0.0-20200602145448-7cc469641b7b
|
|
||||||
github.com/mdlayher/vsock v0.0.0-20191108225356-d9c65923cb8f
|
github.com/mdlayher/vsock v0.0.0-20191108225356-d9c65923cb8f
|
||||||
github.com/mitchellh/mapstructure v1.1.2
|
|
||||||
github.com/opencontainers/image-spec v1.0.1 // indirect
|
github.com/opencontainers/image-spec v1.0.1 // indirect
|
||||||
github.com/opencontainers/runc v1.0.0-rc9.0.20200102164712-2b52db75279c
|
github.com/opencontainers/runc v1.0.0-rc9.0.20200102164712-2b52db75279c
|
||||||
github.com/opencontainers/runtime-spec v1.0.2-0.20190408193819-a1b50f621a48
|
github.com/opencontainers/runtime-spec v1.0.2-0.20190408193819-a1b50f621a48
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@@ -161,13 +161,11 @@ github.com/hashicorp/errwrap v1.0.0 h1:hLrqtEDnRye3+sgx6z4qVLNuviH3MR5aQ0ykNJa/U
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github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
|
github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
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github.com/hashicorp/go-multierror v1.0.0 h1:iVjPR7a6H0tWELX5NxNe7bYopibicUzc7uPribsnS6o=
|
github.com/hashicorp/go-multierror v1.0.0 h1:iVjPR7a6H0tWELX5NxNe7bYopibicUzc7uPribsnS6o=
|
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github.com/hashicorp/go-multierror v1.0.0/go.mod h1:dHtQlpGsu+cZNNAkkCN/P3hoUDHhCYQXV3UM06sGGrk=
|
github.com/hashicorp/go-multierror v1.0.0/go.mod h1:dHtQlpGsu+cZNNAkkCN/P3hoUDHhCYQXV3UM06sGGrk=
|
||||||
github.com/hashicorp/yamux v0.0.0-20190923154419-df201c70410d h1:W+SIwDdl3+jXWeidYySAgzytE3piq6GumXeBjFBG67c=
|
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github.com/hashicorp/yamux v0.0.0-20190923154419-df201c70410d/go.mod h1:+NfK9FKeTrX5uv1uIXGdwYDTeHna2qgaIlx54MXqjAM=
|
|
||||||
github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
|
github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
|
||||||
github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
|
github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
|
||||||
github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
|
github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
|
||||||
github.com/intel/govmm v0.0.0-20200602145448-7cc469641b7b h1:QqUb1HVk0Nb9zyzvIkMmhI7DP5gzyWPx/6md21M52U0=
|
github.com/intel/govmm v0.0.0-20200724170648-af9e34b91ae9 h1:GSRnVLRNweZV3f8Vo3vtMlPsuzvpj57Gj7Y7TkGVO6U=
|
||||||
github.com/intel/govmm v0.0.0-20200602145448-7cc469641b7b/go.mod h1:QKGWoQtjvkvFtzP6ybiM3lxUHqf83Sv3oLqyELUKH4g=
|
github.com/intel/govmm v0.0.0-20200724170648-af9e34b91ae9/go.mod h1:QKGWoQtjvkvFtzP6ybiM3lxUHqf83Sv3oLqyELUKH4g=
|
||||||
github.com/j-keck/arping v0.0.0-20160618110441-2cf9dc699c56/go.mod h1:ymszkNOg6tORTn+6F6j+Jc8TOr5osrynvN6ivFWZ2GA=
|
github.com/j-keck/arping v0.0.0-20160618110441-2cf9dc699c56/go.mod h1:ymszkNOg6tORTn+6F6j+Jc8TOr5osrynvN6ivFWZ2GA=
|
||||||
github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
|
github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
|
||||||
github.com/json-iterator/go v1.1.10/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
|
github.com/json-iterator/go v1.1.10/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
|
||||||
|
|||||||
23
src/runtime/vendor/github.com/hashicorp/yamux/.gitignore
generated
vendored
23
src/runtime/vendor/github.com/hashicorp/yamux/.gitignore
generated
vendored
@@ -1,23 +0,0 @@
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|||||||
# Compiled Object files, Static and Dynamic libs (Shared Objects)
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||||||
*.o
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||||||
*.a
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||||||
*.so
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||||||
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||||||
# Folders
|
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||||||
_obj
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||||||
_test
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||||||
|
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||||||
# Architecture specific extensions/prefixes
|
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||||||
*.[568vq]
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||||||
[568vq].out
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||||||
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||||||
*.cgo1.go
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||||||
*.cgo2.c
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||||||
_cgo_defun.c
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||||||
_cgo_gotypes.go
|
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||||||
_cgo_export.*
|
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||||||
|
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||||||
_testmain.go
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||||||
|
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||||||
*.exe
|
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||||||
*.test
|
|
||||||
362
src/runtime/vendor/github.com/hashicorp/yamux/LICENSE
generated
vendored
362
src/runtime/vendor/github.com/hashicorp/yamux/LICENSE
generated
vendored
@@ -1,362 +0,0 @@
|
|||||||
Mozilla Public License, version 2.0
|
|
||||||
|
|
||||||
1. Definitions
|
|
||||||
|
|
||||||
1.1. "Contributor"
|
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||||||
|
|
||||||
means each individual or legal entity that creates, contributes to the
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||||||
creation of, or owns Covered Software.
|
|
||||||
|
|
||||||
1.2. "Contributor Version"
|
|
||||||
|
|
||||||
means the combination of the Contributions of others (if any) used by a
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||||||
Contributor and that particular Contributor's Contribution.
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||||||
|
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||||||
1.3. "Contribution"
|
|
||||||
|
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||||||
means Covered Software of a particular Contributor.
|
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||||||
|
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||||||
1.4. "Covered Software"
|
|
||||||
|
|
||||||
means Source Code Form to which the initial Contributor has attached the
|
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||||||
notice in Exhibit A, the Executable Form of such Source Code Form, and
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||||||
Modifications of such Source Code Form, in each case including portions
|
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||||||
thereof.
|
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||||||
|
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||||||
1.5. "Incompatible With Secondary Licenses"
|
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||||||
means
|
|
||||||
|
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||||||
a. that the initial Contributor has attached the notice described in
|
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||||||
Exhibit B to the Covered Software; or
|
|
||||||
|
|
||||||
b. that the Covered Software was made available under the terms of
|
|
||||||
version 1.1 or earlier of the License, but not also under the terms of
|
|
||||||
a Secondary License.
|
|
||||||
|
|
||||||
1.6. "Executable Form"
|
|
||||||
|
|
||||||
means any form of the work other than Source Code Form.
|
|
||||||
|
|
||||||
1.7. "Larger Work"
|
|
||||||
|
|
||||||
means a work that combines Covered Software with other material, in a
|
|
||||||
separate file or files, that is not Covered Software.
|
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||||||
|
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||||||
1.8. "License"
|
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||||||
|
|
||||||
means this document.
|
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||||||
|
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||||||
1.9. "Licensable"
|
|
||||||
|
|
||||||
means having the right to grant, to the maximum extent possible, whether
|
|
||||||
at the time of the initial grant or subsequently, any and all of the
|
|
||||||
rights conveyed by this License.
|
|
||||||
|
|
||||||
1.10. "Modifications"
|
|
||||||
|
|
||||||
means any of the following:
|
|
||||||
|
|
||||||
a. any file in Source Code Form that results from an addition to,
|
|
||||||
deletion from, or modification of the contents of Covered Software; or
|
|
||||||
|
|
||||||
b. any new file in Source Code Form that contains any Covered Software.
|
|
||||||
|
|
||||||
1.11. "Patent Claims" of a Contributor
|
|
||||||
|
|
||||||
means any patent claim(s), including without limitation, method,
|
|
||||||
process, and apparatus claims, in any patent Licensable by such
|
|
||||||
Contributor that would be infringed, but for the grant of the License,
|
|
||||||
by the making, using, selling, offering for sale, having made, import,
|
|
||||||
or transfer of either its Contributions or its Contributor Version.
|
|
||||||
|
|
||||||
1.12. "Secondary License"
|
|
||||||
|
|
||||||
means either the GNU General Public License, Version 2.0, the GNU Lesser
|
|
||||||
General Public License, Version 2.1, the GNU Affero General Public
|
|
||||||
License, Version 3.0, or any later versions of those licenses.
|
|
||||||
|
|
||||||
1.13. "Source Code Form"
|
|
||||||
|
|
||||||
means the form of the work preferred for making modifications.
|
|
||||||
|
|
||||||
1.14. "You" (or "Your")
|
|
||||||
|
|
||||||
means an individual or a legal entity exercising rights under this
|
|
||||||
License. For legal entities, "You" includes any entity that controls, is
|
|
||||||
controlled by, or is under common control with You. For purposes of this
|
|
||||||
definition, "control" means (a) the power, direct or indirect, to cause
|
|
||||||
the direction or management of such entity, whether by contract or
|
|
||||||
otherwise, or (b) ownership of more than fifty percent (50%) of the
|
|
||||||
outstanding shares or beneficial ownership of such entity.
|
|
||||||
|
|
||||||
|
|
||||||
2. License Grants and Conditions
|
|
||||||
|
|
||||||
2.1. Grants
|
|
||||||
|
|
||||||
Each Contributor hereby grants You a world-wide, royalty-free,
|
|
||||||
non-exclusive license:
|
|
||||||
|
|
||||||
a. under intellectual property rights (other than patent or trademark)
|
|
||||||
Licensable by such Contributor to use, reproduce, make available,
|
|
||||||
modify, display, perform, distribute, and otherwise exploit its
|
|
||||||
Contributions, either on an unmodified basis, with Modifications, or
|
|
||||||
as part of a Larger Work; and
|
|
||||||
|
|
||||||
b. under Patent Claims of such Contributor to make, use, sell, offer for
|
|
||||||
sale, have made, import, and otherwise transfer either its
|
|
||||||
Contributions or its Contributor Version.
|
|
||||||
|
|
||||||
2.2. Effective Date
|
|
||||||
|
|
||||||
The licenses granted in Section 2.1 with respect to any Contribution
|
|
||||||
become effective for each Contribution on the date the Contributor first
|
|
||||||
distributes such Contribution.
|
|
||||||
|
|
||||||
2.3. Limitations on Grant Scope
|
|
||||||
|
|
||||||
The licenses granted in this Section 2 are the only rights granted under
|
|
||||||
this License. No additional rights or licenses will be implied from the
|
|
||||||
distribution or licensing of Covered Software under this License.
|
|
||||||
Notwithstanding Section 2.1(b) above, no patent license is granted by a
|
|
||||||
Contributor:
|
|
||||||
|
|
||||||
a. for any code that a Contributor has removed from Covered Software; or
|
|
||||||
|
|
||||||
b. for infringements caused by: (i) Your and any other third party's
|
|
||||||
modifications of Covered Software, or (ii) the combination of its
|
|
||||||
Contributions with other software (except as part of its Contributor
|
|
||||||
Version); or
|
|
||||||
|
|
||||||
c. under Patent Claims infringed by Covered Software in the absence of
|
|
||||||
its Contributions.
|
|
||||||
|
|
||||||
This License does not grant any rights in the trademarks, service marks,
|
|
||||||
or logos of any Contributor (except as may be necessary to comply with
|
|
||||||
the notice requirements in Section 3.4).
|
|
||||||
|
|
||||||
2.4. Subsequent Licenses
|
|
||||||
|
|
||||||
No Contributor makes additional grants as a result of Your choice to
|
|
||||||
distribute the Covered Software under a subsequent version of this
|
|
||||||
License (see Section 10.2) or under the terms of a Secondary License (if
|
|
||||||
permitted under the terms of Section 3.3).
|
|
||||||
|
|
||||||
2.5. Representation
|
|
||||||
|
|
||||||
Each Contributor represents that the Contributor believes its
|
|
||||||
Contributions are its original creation(s) or it has sufficient rights to
|
|
||||||
grant the rights to its Contributions conveyed by this License.
|
|
||||||
|
|
||||||
2.6. Fair Use
|
|
||||||
|
|
||||||
This License is not intended to limit any rights You have under
|
|
||||||
applicable copyright doctrines of fair use, fair dealing, or other
|
|
||||||
equivalents.
|
|
||||||
|
|
||||||
2.7. Conditions
|
|
||||||
|
|
||||||
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
|
|
||||||
Section 2.1.
|
|
||||||
|
|
||||||
|
|
||||||
3. Responsibilities
|
|
||||||
|
|
||||||
3.1. Distribution of Source Form
|
|
||||||
|
|
||||||
All distribution of Covered Software in Source Code Form, including any
|
|
||||||
Modifications that You create or to which You contribute, must be under
|
|
||||||
the terms of this License. You must inform recipients that the Source
|
|
||||||
Code Form of the Covered Software is governed by the terms of this
|
|
||||||
License, and how they can obtain a copy of this License. You may not
|
|
||||||
attempt to alter or restrict the recipients' rights in the Source Code
|
|
||||||
Form.
|
|
||||||
|
|
||||||
3.2. Distribution of Executable Form
|
|
||||||
|
|
||||||
If You distribute Covered Software in Executable Form then:
|
|
||||||
|
|
||||||
a. such Covered Software must also be made available in Source Code Form,
|
|
||||||
as described in Section 3.1, and You must inform recipients of the
|
|
||||||
Executable Form how they can obtain a copy of such Source Code Form by
|
|
||||||
reasonable means in a timely manner, at a charge no more than the cost
|
|
||||||
of distribution to the recipient; and
|
|
||||||
|
|
||||||
b. You may distribute such Executable Form under the terms of this
|
|
||||||
License, or sublicense it under different terms, provided that the
|
|
||||||
license for the Executable Form does not attempt to limit or alter the
|
|
||||||
recipients' rights in the Source Code Form under this License.
|
|
||||||
|
|
||||||
3.3. Distribution of a Larger Work
|
|
||||||
|
|
||||||
You may create and distribute a Larger Work under terms of Your choice,
|
|
||||||
provided that You also comply with the requirements of this License for
|
|
||||||
the Covered Software. If the Larger Work is a combination of Covered
|
|
||||||
Software with a work governed by one or more Secondary Licenses, and the
|
|
||||||
Covered Software is not Incompatible With Secondary Licenses, this
|
|
||||||
License permits You to additionally distribute such Covered Software
|
|
||||||
under the terms of such Secondary License(s), so that the recipient of
|
|
||||||
the Larger Work may, at their option, further distribute the Covered
|
|
||||||
Software under the terms of either this License or such Secondary
|
|
||||||
License(s).
|
|
||||||
|
|
||||||
3.4. Notices
|
|
||||||
|
|
||||||
You may not remove or alter the substance of any license notices
|
|
||||||
(including copyright notices, patent notices, disclaimers of warranty, or
|
|
||||||
limitations of liability) contained within the Source Code Form of the
|
|
||||||
Covered Software, except that You may alter any license notices to the
|
|
||||||
extent required to remedy known factual inaccuracies.
|
|
||||||
|
|
||||||
3.5. Application of Additional Terms
|
|
||||||
|
|
||||||
You may choose to offer, and to charge a fee for, warranty, support,
|
|
||||||
indemnity or liability obligations to one or more recipients of Covered
|
|
||||||
Software. However, You may do so only on Your own behalf, and not on
|
|
||||||
behalf of any Contributor. You must make it absolutely clear that any
|
|
||||||
such warranty, support, indemnity, or liability obligation is offered by
|
|
||||||
You alone, and You hereby agree to indemnify every Contributor for any
|
|
||||||
liability incurred by such Contributor as a result of warranty, support,
|
|
||||||
indemnity or liability terms You offer. You may include additional
|
|
||||||
disclaimers of warranty and limitations of liability specific to any
|
|
||||||
jurisdiction.
|
|
||||||
|
|
||||||
4. Inability to Comply Due to Statute or Regulation
|
|
||||||
|
|
||||||
If it is impossible for You to comply with any of the terms of this License
|
|
||||||
with respect to some or all of the Covered Software due to statute,
|
|
||||||
judicial order, or regulation then You must: (a) comply with the terms of
|
|
||||||
this License to the maximum extent possible; and (b) describe the
|
|
||||||
limitations and the code they affect. Such description must be placed in a
|
|
||||||
text file included with all distributions of the Covered Software under
|
|
||||||
this License. Except to the extent prohibited by statute or regulation,
|
|
||||||
such description must be sufficiently detailed for a recipient of ordinary
|
|
||||||
skill to be able to understand it.
|
|
||||||
|
|
||||||
5. Termination
|
|
||||||
|
|
||||||
5.1. The rights granted under this License will terminate automatically if You
|
|
||||||
fail to comply with any of its terms. However, if You become compliant,
|
|
||||||
then the rights granted under this License from a particular Contributor
|
|
||||||
are reinstated (a) provisionally, unless and until such Contributor
|
|
||||||
explicitly and finally terminates Your grants, and (b) on an ongoing
|
|
||||||
basis, if such Contributor fails to notify You of the non-compliance by
|
|
||||||
some reasonable means prior to 60 days after You have come back into
|
|
||||||
compliance. Moreover, Your grants from a particular Contributor are
|
|
||||||
reinstated on an ongoing basis if such Contributor notifies You of the
|
|
||||||
non-compliance by some reasonable means, this is the first time You have
|
|
||||||
received notice of non-compliance with this License from such
|
|
||||||
Contributor, and You become compliant prior to 30 days after Your receipt
|
|
||||||
of the notice.
|
|
||||||
|
|
||||||
5.2. If You initiate litigation against any entity by asserting a patent
|
|
||||||
infringement claim (excluding declaratory judgment actions,
|
|
||||||
counter-claims, and cross-claims) alleging that a Contributor Version
|
|
||||||
directly or indirectly infringes any patent, then the rights granted to
|
|
||||||
You by any and all Contributors for the Covered Software under Section
|
|
||||||
2.1 of this License shall terminate.
|
|
||||||
|
|
||||||
5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
|
|
||||||
license agreements (excluding distributors and resellers) which have been
|
|
||||||
validly granted by You or Your distributors under this License prior to
|
|
||||||
termination shall survive termination.
|
|
||||||
|
|
||||||
6. Disclaimer of Warranty
|
|
||||||
|
|
||||||
Covered Software is provided under this License on an "as is" basis,
|
|
||||||
without warranty of any kind, either expressed, implied, or statutory,
|
|
||||||
including, without limitation, warranties that the Covered Software is free
|
|
||||||
of defects, merchantable, fit for a particular purpose or non-infringing.
|
|
||||||
The entire risk as to the quality and performance of the Covered Software
|
|
||||||
is with You. Should any Covered Software prove defective in any respect,
|
|
||||||
You (not any Contributor) assume the cost of any necessary servicing,
|
|
||||||
repair, or correction. This disclaimer of warranty constitutes an essential
|
|
||||||
part of this License. No use of any Covered Software is authorized under
|
|
||||||
this License except under this disclaimer.
|
|
||||||
|
|
||||||
7. Limitation of Liability
|
|
||||||
|
|
||||||
Under no circumstances and under no legal theory, whether tort (including
|
|
||||||
negligence), contract, or otherwise, shall any Contributor, or anyone who
|
|
||||||
distributes Covered Software as permitted above, be liable to You for any
|
|
||||||
direct, indirect, special, incidental, or consequential damages of any
|
|
||||||
character including, without limitation, damages for lost profits, loss of
|
|
||||||
goodwill, work stoppage, computer failure or malfunction, or any and all
|
|
||||||
other commercial damages or losses, even if such party shall have been
|
|
||||||
informed of the possibility of such damages. This limitation of liability
|
|
||||||
shall not apply to liability for death or personal injury resulting from
|
|
||||||
such party's negligence to the extent applicable law prohibits such
|
|
||||||
limitation. Some jurisdictions do not allow the exclusion or limitation of
|
|
||||||
incidental or consequential damages, so this exclusion and limitation may
|
|
||||||
not apply to You.
|
|
||||||
|
|
||||||
8. Litigation
|
|
||||||
|
|
||||||
Any litigation relating to this License may be brought only in the courts
|
|
||||||
of a jurisdiction where the defendant maintains its principal place of
|
|
||||||
business and such litigation shall be governed by laws of that
|
|
||||||
jurisdiction, without reference to its conflict-of-law provisions. Nothing
|
|
||||||
in this Section shall prevent a party's ability to bring cross-claims or
|
|
||||||
counter-claims.
|
|
||||||
|
|
||||||
9. Miscellaneous
|
|
||||||
|
|
||||||
This License represents the complete agreement concerning the subject
|
|
||||||
matter hereof. If any provision of this License is held to be
|
|
||||||
unenforceable, such provision shall be reformed only to the extent
|
|
||||||
necessary to make it enforceable. Any law or regulation which provides that
|
|
||||||
the language of a contract shall be construed against the drafter shall not
|
|
||||||
be used to construe this License against a Contributor.
|
|
||||||
|
|
||||||
|
|
||||||
10. Versions of the License
|
|
||||||
|
|
||||||
10.1. New Versions
|
|
||||||
|
|
||||||
Mozilla Foundation is the license steward. Except as provided in Section
|
|
||||||
10.3, no one other than the license steward has the right to modify or
|
|
||||||
publish new versions of this License. Each version will be given a
|
|
||||||
distinguishing version number.
|
|
||||||
|
|
||||||
10.2. Effect of New Versions
|
|
||||||
|
|
||||||
You may distribute the Covered Software under the terms of the version
|
|
||||||
of the License under which You originally received the Covered Software,
|
|
||||||
or under the terms of any subsequent version published by the license
|
|
||||||
steward.
|
|
||||||
|
|
||||||
10.3. Modified Versions
|
|
||||||
|
|
||||||
If you create software not governed by this License, and you want to
|
|
||||||
create a new license for such software, you may create and use a
|
|
||||||
modified version of this License if you rename the license and remove
|
|
||||||
any references to the name of the license steward (except to note that
|
|
||||||
such modified license differs from this License).
|
|
||||||
|
|
||||||
10.4. Distributing Source Code Form that is Incompatible With Secondary
|
|
||||||
Licenses If You choose to distribute Source Code Form that is
|
|
||||||
Incompatible With Secondary Licenses under the terms of this version of
|
|
||||||
the License, the notice described in Exhibit B of this License must be
|
|
||||||
attached.
|
|
||||||
|
|
||||||
Exhibit A - Source Code Form License Notice
|
|
||||||
|
|
||||||
This Source Code Form is subject to the
|
|
||||||
terms of the Mozilla Public License, v.
|
|
||||||
2.0. If a copy of the MPL was not
|
|
||||||
distributed with this file, You can
|
|
||||||
obtain one at
|
|
||||||
http://mozilla.org/MPL/2.0/.
|
|
||||||
|
|
||||||
If it is not possible or desirable to put the notice in a particular file,
|
|
||||||
then You may include the notice in a location (such as a LICENSE file in a
|
|
||||||
relevant directory) where a recipient would be likely to look for such a
|
|
||||||
notice.
|
|
||||||
|
|
||||||
You may add additional accurate notices of copyright ownership.
|
|
||||||
|
|
||||||
Exhibit B - "Incompatible With Secondary Licenses" Notice
|
|
||||||
|
|
||||||
This Source Code Form is "Incompatible
|
|
||||||
With Secondary Licenses", as defined by
|
|
||||||
the Mozilla Public License, v. 2.0.
|
|
||||||
86
src/runtime/vendor/github.com/hashicorp/yamux/README.md
generated
vendored
86
src/runtime/vendor/github.com/hashicorp/yamux/README.md
generated
vendored
@@ -1,86 +0,0 @@
|
|||||||
# Yamux
|
|
||||||
|
|
||||||
Yamux (Yet another Multiplexer) is a multiplexing library for Golang.
|
|
||||||
It relies on an underlying connection to provide reliability
|
|
||||||
and ordering, such as TCP or Unix domain sockets, and provides
|
|
||||||
stream-oriented multiplexing. It is inspired by SPDY but is not
|
|
||||||
interoperable with it.
|
|
||||||
|
|
||||||
Yamux features include:
|
|
||||||
|
|
||||||
* Bi-directional streams
|
|
||||||
* Streams can be opened by either client or server
|
|
||||||
* Useful for NAT traversal
|
|
||||||
* Server-side push support
|
|
||||||
* Flow control
|
|
||||||
* Avoid starvation
|
|
||||||
* Back-pressure to prevent overwhelming a receiver
|
|
||||||
* Keep Alives
|
|
||||||
* Enables persistent connections over a load balancer
|
|
||||||
* Efficient
|
|
||||||
* Enables thousands of logical streams with low overhead
|
|
||||||
|
|
||||||
## Documentation
|
|
||||||
|
|
||||||
For complete documentation, see the associated [Godoc](http://godoc.org/github.com/hashicorp/yamux).
|
|
||||||
|
|
||||||
## Specification
|
|
||||||
|
|
||||||
The full specification for Yamux is provided in the `spec.md` file.
|
|
||||||
It can be used as a guide to implementors of interoperable libraries.
|
|
||||||
|
|
||||||
## Usage
|
|
||||||
|
|
||||||
Using Yamux is remarkably simple:
|
|
||||||
|
|
||||||
```go
|
|
||||||
|
|
||||||
func client() {
|
|
||||||
// Get a TCP connection
|
|
||||||
conn, err := net.Dial(...)
|
|
||||||
if err != nil {
|
|
||||||
panic(err)
|
|
||||||
}
|
|
||||||
|
|
||||||
// Setup client side of yamux
|
|
||||||
session, err := yamux.Client(conn, nil)
|
|
||||||
if err != nil {
|
|
||||||
panic(err)
|
|
||||||
}
|
|
||||||
|
|
||||||
// Open a new stream
|
|
||||||
stream, err := session.Open()
|
|
||||||
if err != nil {
|
|
||||||
panic(err)
|
|
||||||
}
|
|
||||||
|
|
||||||
// Stream implements net.Conn
|
|
||||||
stream.Write([]byte("ping"))
|
|
||||||
}
|
|
||||||
|
|
||||||
func server() {
|
|
||||||
// Accept a TCP connection
|
|
||||||
conn, err := listener.Accept()
|
|
||||||
if err != nil {
|
|
||||||
panic(err)
|
|
||||||
}
|
|
||||||
|
|
||||||
// Setup server side of yamux
|
|
||||||
session, err := yamux.Server(conn, nil)
|
|
||||||
if err != nil {
|
|
||||||
panic(err)
|
|
||||||
}
|
|
||||||
|
|
||||||
// Accept a stream
|
|
||||||
stream, err := session.Accept()
|
|
||||||
if err != nil {
|
|
||||||
panic(err)
|
|
||||||
}
|
|
||||||
|
|
||||||
// Listen for a message
|
|
||||||
buf := make([]byte, 4)
|
|
||||||
stream.Read(buf)
|
|
||||||
}
|
|
||||||
|
|
||||||
```
|
|
||||||
|
|
||||||
60
src/runtime/vendor/github.com/hashicorp/yamux/addr.go
generated
vendored
60
src/runtime/vendor/github.com/hashicorp/yamux/addr.go
generated
vendored
@@ -1,60 +0,0 @@
|
|||||||
package yamux
|
|
||||||
|
|
||||||
import (
|
|
||||||
"fmt"
|
|
||||||
"net"
|
|
||||||
)
|
|
||||||
|
|
||||||
// hasAddr is used to get the address from the underlying connection
|
|
||||||
type hasAddr interface {
|
|
||||||
LocalAddr() net.Addr
|
|
||||||
RemoteAddr() net.Addr
|
|
||||||
}
|
|
||||||
|
|
||||||
// yamuxAddr is used when we cannot get the underlying address
|
|
||||||
type yamuxAddr struct {
|
|
||||||
Addr string
|
|
||||||
}
|
|
||||||
|
|
||||||
func (*yamuxAddr) Network() string {
|
|
||||||
return "yamux"
|
|
||||||
}
|
|
||||||
|
|
||||||
func (y *yamuxAddr) String() string {
|
|
||||||
return fmt.Sprintf("yamux:%s", y.Addr)
|
|
||||||
}
|
|
||||||
|
|
||||||
// Addr is used to get the address of the listener.
|
|
||||||
func (s *Session) Addr() net.Addr {
|
|
||||||
return s.LocalAddr()
|
|
||||||
}
|
|
||||||
|
|
||||||
// LocalAddr is used to get the local address of the
|
|
||||||
// underlying connection.
|
|
||||||
func (s *Session) LocalAddr() net.Addr {
|
|
||||||
addr, ok := s.conn.(hasAddr)
|
|
||||||
if !ok {
|
|
||||||
return &yamuxAddr{"local"}
|
|
||||||
}
|
|
||||||
return addr.LocalAddr()
|
|
||||||
}
|
|
||||||
|
|
||||||
// RemoteAddr is used to get the address of remote end
|
|
||||||
// of the underlying connection
|
|
||||||
func (s *Session) RemoteAddr() net.Addr {
|
|
||||||
addr, ok := s.conn.(hasAddr)
|
|
||||||
if !ok {
|
|
||||||
return &yamuxAddr{"remote"}
|
|
||||||
}
|
|
||||||
return addr.RemoteAddr()
|
|
||||||
}
|
|
||||||
|
|
||||||
// LocalAddr returns the local address
|
|
||||||
func (s *Stream) LocalAddr() net.Addr {
|
|
||||||
return s.session.LocalAddr()
|
|
||||||
}
|
|
||||||
|
|
||||||
// RemoteAddr returns the remote address
|
|
||||||
func (s *Stream) RemoteAddr() net.Addr {
|
|
||||||
return s.session.RemoteAddr()
|
|
||||||
}
|
|
||||||
157
src/runtime/vendor/github.com/hashicorp/yamux/const.go
generated
vendored
157
src/runtime/vendor/github.com/hashicorp/yamux/const.go
generated
vendored
@@ -1,157 +0,0 @@
|
|||||||
package yamux
|
|
||||||
|
|
||||||
import (
|
|
||||||
"encoding/binary"
|
|
||||||
"fmt"
|
|
||||||
)
|
|
||||||
|
|
||||||
var (
|
|
||||||
// ErrInvalidVersion means we received a frame with an
|
|
||||||
// invalid version
|
|
||||||
ErrInvalidVersion = fmt.Errorf("invalid protocol version")
|
|
||||||
|
|
||||||
// ErrInvalidMsgType means we received a frame with an
|
|
||||||
// invalid message type
|
|
||||||
ErrInvalidMsgType = fmt.Errorf("invalid msg type")
|
|
||||||
|
|
||||||
// ErrSessionShutdown is used if there is a shutdown during
|
|
||||||
// an operation
|
|
||||||
ErrSessionShutdown = fmt.Errorf("session shutdown")
|
|
||||||
|
|
||||||
// ErrStreamsExhausted is returned if we have no more
|
|
||||||
// stream ids to issue
|
|
||||||
ErrStreamsExhausted = fmt.Errorf("streams exhausted")
|
|
||||||
|
|
||||||
// ErrDuplicateStream is used if a duplicate stream is
|
|
||||||
// opened inbound
|
|
||||||
ErrDuplicateStream = fmt.Errorf("duplicate stream initiated")
|
|
||||||
|
|
||||||
// ErrReceiveWindowExceeded indicates the window was exceeded
|
|
||||||
ErrRecvWindowExceeded = fmt.Errorf("recv window exceeded")
|
|
||||||
|
|
||||||
// ErrTimeout is used when we reach an IO deadline
|
|
||||||
ErrTimeout = fmt.Errorf("i/o deadline reached")
|
|
||||||
|
|
||||||
// ErrStreamClosed is returned when using a closed stream
|
|
||||||
ErrStreamClosed = fmt.Errorf("stream closed")
|
|
||||||
|
|
||||||
// ErrUnexpectedFlag is set when we get an unexpected flag
|
|
||||||
ErrUnexpectedFlag = fmt.Errorf("unexpected flag")
|
|
||||||
|
|
||||||
// ErrRemoteGoAway is used when we get a go away from the other side
|
|
||||||
ErrRemoteGoAway = fmt.Errorf("remote end is not accepting connections")
|
|
||||||
|
|
||||||
// ErrConnectionReset is sent if a stream is reset. This can happen
|
|
||||||
// if the backlog is exceeded, or if there was a remote GoAway.
|
|
||||||
ErrConnectionReset = fmt.Errorf("connection reset")
|
|
||||||
|
|
||||||
// ErrConnectionWriteTimeout indicates that we hit the "safety valve"
|
|
||||||
// timeout writing to the underlying stream connection.
|
|
||||||
ErrConnectionWriteTimeout = fmt.Errorf("connection write timeout")
|
|
||||||
|
|
||||||
// ErrKeepAliveTimeout is sent if a missed keepalive caused the stream close
|
|
||||||
ErrKeepAliveTimeout = fmt.Errorf("keepalive timeout")
|
|
||||||
)
|
|
||||||
|
|
||||||
const (
|
|
||||||
// protoVersion is the only version we support
|
|
||||||
protoVersion uint8 = 0
|
|
||||||
)
|
|
||||||
|
|
||||||
const (
|
|
||||||
// Data is used for data frames. They are followed
|
|
||||||
// by length bytes worth of payload.
|
|
||||||
typeData uint8 = iota
|
|
||||||
|
|
||||||
// WindowUpdate is used to change the window of
|
|
||||||
// a given stream. The length indicates the delta
|
|
||||||
// update to the window.
|
|
||||||
typeWindowUpdate
|
|
||||||
|
|
||||||
// Ping is sent as a keep-alive or to measure
|
|
||||||
// the RTT. The StreamID and Length value are echoed
|
|
||||||
// back in the response.
|
|
||||||
typePing
|
|
||||||
|
|
||||||
// GoAway is sent to terminate a session. The StreamID
|
|
||||||
// should be 0 and the length is an error code.
|
|
||||||
typeGoAway
|
|
||||||
)
|
|
||||||
|
|
||||||
const (
|
|
||||||
// SYN is sent to signal a new stream. May
|
|
||||||
// be sent with a data payload
|
|
||||||
flagSYN uint16 = 1 << iota
|
|
||||||
|
|
||||||
// ACK is sent to acknowledge a new stream. May
|
|
||||||
// be sent with a data payload
|
|
||||||
flagACK
|
|
||||||
|
|
||||||
// FIN is sent to half-close the given stream.
|
|
||||||
// May be sent with a data payload.
|
|
||||||
flagFIN
|
|
||||||
|
|
||||||
// RST is used to hard close a given stream.
|
|
||||||
flagRST
|
|
||||||
)
|
|
||||||
|
|
||||||
const (
|
|
||||||
// initialStreamWindow is the initial stream window size
|
|
||||||
initialStreamWindow uint32 = 256 * 1024
|
|
||||||
)
|
|
||||||
|
|
||||||
const (
|
|
||||||
// goAwayNormal is sent on a normal termination
|
|
||||||
goAwayNormal uint32 = iota
|
|
||||||
|
|
||||||
// goAwayProtoErr sent on a protocol error
|
|
||||||
goAwayProtoErr
|
|
||||||
|
|
||||||
// goAwayInternalErr sent on an internal error
|
|
||||||
goAwayInternalErr
|
|
||||||
)
|
|
||||||
|
|
||||||
const (
|
|
||||||
sizeOfVersion = 1
|
|
||||||
sizeOfType = 1
|
|
||||||
sizeOfFlags = 2
|
|
||||||
sizeOfStreamID = 4
|
|
||||||
sizeOfLength = 4
|
|
||||||
headerSize = sizeOfVersion + sizeOfType + sizeOfFlags +
|
|
||||||
sizeOfStreamID + sizeOfLength
|
|
||||||
)
|
|
||||||
|
|
||||||
type header []byte
|
|
||||||
|
|
||||||
func (h header) Version() uint8 {
|
|
||||||
return h[0]
|
|
||||||
}
|
|
||||||
|
|
||||||
func (h header) MsgType() uint8 {
|
|
||||||
return h[1]
|
|
||||||
}
|
|
||||||
|
|
||||||
func (h header) Flags() uint16 {
|
|
||||||
return binary.BigEndian.Uint16(h[2:4])
|
|
||||||
}
|
|
||||||
|
|
||||||
func (h header) StreamID() uint32 {
|
|
||||||
return binary.BigEndian.Uint32(h[4:8])
|
|
||||||
}
|
|
||||||
|
|
||||||
func (h header) Length() uint32 {
|
|
||||||
return binary.BigEndian.Uint32(h[8:12])
|
|
||||||
}
|
|
||||||
|
|
||||||
func (h header) String() string {
|
|
||||||
return fmt.Sprintf("Vsn:%d Type:%d Flags:%d StreamID:%d Length:%d",
|
|
||||||
h.Version(), h.MsgType(), h.Flags(), h.StreamID(), h.Length())
|
|
||||||
}
|
|
||||||
|
|
||||||
func (h header) encode(msgType uint8, flags uint16, streamID uint32, length uint32) {
|
|
||||||
h[0] = protoVersion
|
|
||||||
h[1] = msgType
|
|
||||||
binary.BigEndian.PutUint16(h[2:4], flags)
|
|
||||||
binary.BigEndian.PutUint32(h[4:8], streamID)
|
|
||||||
binary.BigEndian.PutUint32(h[8:12], length)
|
|
||||||
}
|
|
||||||
1
src/runtime/vendor/github.com/hashicorp/yamux/go.mod
generated
vendored
1
src/runtime/vendor/github.com/hashicorp/yamux/go.mod
generated
vendored
@@ -1 +0,0 @@
|
|||||||
module github.com/hashicorp/yamux
|
|
||||||
98
src/runtime/vendor/github.com/hashicorp/yamux/mux.go
generated
vendored
98
src/runtime/vendor/github.com/hashicorp/yamux/mux.go
generated
vendored
@@ -1,98 +0,0 @@
|
|||||||
package yamux
|
|
||||||
|
|
||||||
import (
|
|
||||||
"fmt"
|
|
||||||
"io"
|
|
||||||
"log"
|
|
||||||
"os"
|
|
||||||
"time"
|
|
||||||
)
|
|
||||||
|
|
||||||
// Config is used to tune the Yamux session
|
|
||||||
type Config struct {
|
|
||||||
// AcceptBacklog is used to limit how many streams may be
|
|
||||||
// waiting an accept.
|
|
||||||
AcceptBacklog int
|
|
||||||
|
|
||||||
// EnableKeepalive is used to do a period keep alive
|
|
||||||
// messages using a ping.
|
|
||||||
EnableKeepAlive bool
|
|
||||||
|
|
||||||
// KeepAliveInterval is how often to perform the keep alive
|
|
||||||
KeepAliveInterval time.Duration
|
|
||||||
|
|
||||||
// ConnectionWriteTimeout is meant to be a "safety valve" timeout after
|
|
||||||
// we which will suspect a problem with the underlying connection and
|
|
||||||
// close it. This is only applied to writes, where's there's generally
|
|
||||||
// an expectation that things will move along quickly.
|
|
||||||
ConnectionWriteTimeout time.Duration
|
|
||||||
|
|
||||||
// MaxStreamWindowSize is used to control the maximum
|
|
||||||
// window size that we allow for a stream.
|
|
||||||
MaxStreamWindowSize uint32
|
|
||||||
|
|
||||||
// LogOutput is used to control the log destination. Either Logger or
|
|
||||||
// LogOutput can be set, not both.
|
|
||||||
LogOutput io.Writer
|
|
||||||
|
|
||||||
// Logger is used to pass in the logger to be used. Either Logger or
|
|
||||||
// LogOutput can be set, not both.
|
|
||||||
Logger *log.Logger
|
|
||||||
}
|
|
||||||
|
|
||||||
// DefaultConfig is used to return a default configuration
|
|
||||||
func DefaultConfig() *Config {
|
|
||||||
return &Config{
|
|
||||||
AcceptBacklog: 256,
|
|
||||||
EnableKeepAlive: true,
|
|
||||||
KeepAliveInterval: 30 * time.Second,
|
|
||||||
ConnectionWriteTimeout: 10 * time.Second,
|
|
||||||
MaxStreamWindowSize: initialStreamWindow,
|
|
||||||
LogOutput: os.Stderr,
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// VerifyConfig is used to verify the sanity of configuration
|
|
||||||
func VerifyConfig(config *Config) error {
|
|
||||||
if config.AcceptBacklog <= 0 {
|
|
||||||
return fmt.Errorf("backlog must be positive")
|
|
||||||
}
|
|
||||||
if config.KeepAliveInterval == 0 {
|
|
||||||
return fmt.Errorf("keep-alive interval must be positive")
|
|
||||||
}
|
|
||||||
if config.MaxStreamWindowSize < initialStreamWindow {
|
|
||||||
return fmt.Errorf("MaxStreamWindowSize must be larger than %d", initialStreamWindow)
|
|
||||||
}
|
|
||||||
if config.LogOutput != nil && config.Logger != nil {
|
|
||||||
return fmt.Errorf("both Logger and LogOutput may not be set, select one")
|
|
||||||
} else if config.LogOutput == nil && config.Logger == nil {
|
|
||||||
return fmt.Errorf("one of Logger or LogOutput must be set, select one")
|
|
||||||
}
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// Server is used to initialize a new server-side connection.
|
|
||||||
// There must be at most one server-side connection. If a nil config is
|
|
||||||
// provided, the DefaultConfiguration will be used.
|
|
||||||
func Server(conn io.ReadWriteCloser, config *Config) (*Session, error) {
|
|
||||||
if config == nil {
|
|
||||||
config = DefaultConfig()
|
|
||||||
}
|
|
||||||
if err := VerifyConfig(config); err != nil {
|
|
||||||
return nil, err
|
|
||||||
}
|
|
||||||
return newSession(config, conn, false), nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// Client is used to initialize a new client-side connection.
|
|
||||||
// There must be at most one client-side connection.
|
|
||||||
func Client(conn io.ReadWriteCloser, config *Config) (*Session, error) {
|
|
||||||
if config == nil {
|
|
||||||
config = DefaultConfig()
|
|
||||||
}
|
|
||||||
|
|
||||||
if err := VerifyConfig(config); err != nil {
|
|
||||||
return nil, err
|
|
||||||
}
|
|
||||||
return newSession(config, conn, true), nil
|
|
||||||
}
|
|
||||||
653
src/runtime/vendor/github.com/hashicorp/yamux/session.go
generated
vendored
653
src/runtime/vendor/github.com/hashicorp/yamux/session.go
generated
vendored
@@ -1,653 +0,0 @@
|
|||||||
package yamux
|
|
||||||
|
|
||||||
import (
|
|
||||||
"bufio"
|
|
||||||
"fmt"
|
|
||||||
"io"
|
|
||||||
"io/ioutil"
|
|
||||||
"log"
|
|
||||||
"math"
|
|
||||||
"net"
|
|
||||||
"strings"
|
|
||||||
"sync"
|
|
||||||
"sync/atomic"
|
|
||||||
"time"
|
|
||||||
)
|
|
||||||
|
|
||||||
// Session is used to wrap a reliable ordered connection and to
|
|
||||||
// multiplex it into multiple streams.
|
|
||||||
type Session struct {
|
|
||||||
// remoteGoAway indicates the remote side does
|
|
||||||
// not want futher connections. Must be first for alignment.
|
|
||||||
remoteGoAway int32
|
|
||||||
|
|
||||||
// localGoAway indicates that we should stop
|
|
||||||
// accepting futher connections. Must be first for alignment.
|
|
||||||
localGoAway int32
|
|
||||||
|
|
||||||
// nextStreamID is the next stream we should
|
|
||||||
// send. This depends if we are a client/server.
|
|
||||||
nextStreamID uint32
|
|
||||||
|
|
||||||
// config holds our configuration
|
|
||||||
config *Config
|
|
||||||
|
|
||||||
// logger is used for our logs
|
|
||||||
logger *log.Logger
|
|
||||||
|
|
||||||
// conn is the underlying connection
|
|
||||||
conn io.ReadWriteCloser
|
|
||||||
|
|
||||||
// bufRead is a buffered reader
|
|
||||||
bufRead *bufio.Reader
|
|
||||||
|
|
||||||
// pings is used to track inflight pings
|
|
||||||
pings map[uint32]chan struct{}
|
|
||||||
pingID uint32
|
|
||||||
pingLock sync.Mutex
|
|
||||||
|
|
||||||
// streams maps a stream id to a stream, and inflight has an entry
|
|
||||||
// for any outgoing stream that has not yet been established. Both are
|
|
||||||
// protected by streamLock.
|
|
||||||
streams map[uint32]*Stream
|
|
||||||
inflight map[uint32]struct{}
|
|
||||||
streamLock sync.Mutex
|
|
||||||
|
|
||||||
// synCh acts like a semaphore. It is sized to the AcceptBacklog which
|
|
||||||
// is assumed to be symmetric between the client and server. This allows
|
|
||||||
// the client to avoid exceeding the backlog and instead blocks the open.
|
|
||||||
synCh chan struct{}
|
|
||||||
|
|
||||||
// acceptCh is used to pass ready streams to the client
|
|
||||||
acceptCh chan *Stream
|
|
||||||
|
|
||||||
// sendCh is used to mark a stream as ready to send,
|
|
||||||
// or to send a header out directly.
|
|
||||||
sendCh chan sendReady
|
|
||||||
|
|
||||||
// recvDoneCh is closed when recv() exits to avoid a race
|
|
||||||
// between stream registration and stream shutdown
|
|
||||||
recvDoneCh chan struct{}
|
|
||||||
|
|
||||||
// shutdown is used to safely close a session
|
|
||||||
shutdown bool
|
|
||||||
shutdownErr error
|
|
||||||
shutdownCh chan struct{}
|
|
||||||
shutdownLock sync.Mutex
|
|
||||||
}
|
|
||||||
|
|
||||||
// sendReady is used to either mark a stream as ready
|
|
||||||
// or to directly send a header
|
|
||||||
type sendReady struct {
|
|
||||||
Hdr []byte
|
|
||||||
Body io.Reader
|
|
||||||
Err chan error
|
|
||||||
}
|
|
||||||
|
|
||||||
// newSession is used to construct a new session
|
|
||||||
func newSession(config *Config, conn io.ReadWriteCloser, client bool) *Session {
|
|
||||||
logger := config.Logger
|
|
||||||
if logger == nil {
|
|
||||||
logger = log.New(config.LogOutput, "", log.LstdFlags)
|
|
||||||
}
|
|
||||||
|
|
||||||
s := &Session{
|
|
||||||
config: config,
|
|
||||||
logger: logger,
|
|
||||||
conn: conn,
|
|
||||||
bufRead: bufio.NewReader(conn),
|
|
||||||
pings: make(map[uint32]chan struct{}),
|
|
||||||
streams: make(map[uint32]*Stream),
|
|
||||||
inflight: make(map[uint32]struct{}),
|
|
||||||
synCh: make(chan struct{}, config.AcceptBacklog),
|
|
||||||
acceptCh: make(chan *Stream, config.AcceptBacklog),
|
|
||||||
sendCh: make(chan sendReady, 64),
|
|
||||||
recvDoneCh: make(chan struct{}),
|
|
||||||
shutdownCh: make(chan struct{}),
|
|
||||||
}
|
|
||||||
if client {
|
|
||||||
s.nextStreamID = 1
|
|
||||||
} else {
|
|
||||||
s.nextStreamID = 2
|
|
||||||
}
|
|
||||||
go s.recv()
|
|
||||||
go s.send()
|
|
||||||
if config.EnableKeepAlive {
|
|
||||||
go s.keepalive()
|
|
||||||
}
|
|
||||||
return s
|
|
||||||
}
|
|
||||||
|
|
||||||
// IsClosed does a safe check to see if we have shutdown
|
|
||||||
func (s *Session) IsClosed() bool {
|
|
||||||
select {
|
|
||||||
case <-s.shutdownCh:
|
|
||||||
return true
|
|
||||||
default:
|
|
||||||
return false
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// CloseChan returns a read-only channel which is closed as
|
|
||||||
// soon as the session is closed.
|
|
||||||
func (s *Session) CloseChan() <-chan struct{} {
|
|
||||||
return s.shutdownCh
|
|
||||||
}
|
|
||||||
|
|
||||||
// NumStreams returns the number of currently open streams
|
|
||||||
func (s *Session) NumStreams() int {
|
|
||||||
s.streamLock.Lock()
|
|
||||||
num := len(s.streams)
|
|
||||||
s.streamLock.Unlock()
|
|
||||||
return num
|
|
||||||
}
|
|
||||||
|
|
||||||
// Open is used to create a new stream as a net.Conn
|
|
||||||
func (s *Session) Open() (net.Conn, error) {
|
|
||||||
conn, err := s.OpenStream()
|
|
||||||
if err != nil {
|
|
||||||
return nil, err
|
|
||||||
}
|
|
||||||
return conn, nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// OpenStream is used to create a new stream
|
|
||||||
func (s *Session) OpenStream() (*Stream, error) {
|
|
||||||
if s.IsClosed() {
|
|
||||||
return nil, ErrSessionShutdown
|
|
||||||
}
|
|
||||||
if atomic.LoadInt32(&s.remoteGoAway) == 1 {
|
|
||||||
return nil, ErrRemoteGoAway
|
|
||||||
}
|
|
||||||
|
|
||||||
// Block if we have too many inflight SYNs
|
|
||||||
select {
|
|
||||||
case s.synCh <- struct{}{}:
|
|
||||||
case <-s.shutdownCh:
|
|
||||||
return nil, ErrSessionShutdown
|
|
||||||
}
|
|
||||||
|
|
||||||
GET_ID:
|
|
||||||
// Get an ID, and check for stream exhaustion
|
|
||||||
id := atomic.LoadUint32(&s.nextStreamID)
|
|
||||||
if id >= math.MaxUint32-1 {
|
|
||||||
return nil, ErrStreamsExhausted
|
|
||||||
}
|
|
||||||
if !atomic.CompareAndSwapUint32(&s.nextStreamID, id, id+2) {
|
|
||||||
goto GET_ID
|
|
||||||
}
|
|
||||||
|
|
||||||
// Register the stream
|
|
||||||
stream := newStream(s, id, streamInit)
|
|
||||||
s.streamLock.Lock()
|
|
||||||
s.streams[id] = stream
|
|
||||||
s.inflight[id] = struct{}{}
|
|
||||||
s.streamLock.Unlock()
|
|
||||||
|
|
||||||
// Send the window update to create
|
|
||||||
if err := stream.sendWindowUpdate(); err != nil {
|
|
||||||
select {
|
|
||||||
case <-s.synCh:
|
|
||||||
default:
|
|
||||||
s.logger.Printf("[ERR] yamux: aborted stream open without inflight syn semaphore")
|
|
||||||
}
|
|
||||||
return nil, err
|
|
||||||
}
|
|
||||||
return stream, nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// Accept is used to block until the next available stream
|
|
||||||
// is ready to be accepted.
|
|
||||||
func (s *Session) Accept() (net.Conn, error) {
|
|
||||||
conn, err := s.AcceptStream()
|
|
||||||
if err != nil {
|
|
||||||
return nil, err
|
|
||||||
}
|
|
||||||
return conn, err
|
|
||||||
}
|
|
||||||
|
|
||||||
// AcceptStream is used to block until the next available stream
|
|
||||||
// is ready to be accepted.
|
|
||||||
func (s *Session) AcceptStream() (*Stream, error) {
|
|
||||||
select {
|
|
||||||
case stream := <-s.acceptCh:
|
|
||||||
if err := stream.sendWindowUpdate(); err != nil {
|
|
||||||
return nil, err
|
|
||||||
}
|
|
||||||
return stream, nil
|
|
||||||
case <-s.shutdownCh:
|
|
||||||
return nil, s.shutdownErr
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// Close is used to close the session and all streams.
|
|
||||||
// Attempts to send a GoAway before closing the connection.
|
|
||||||
func (s *Session) Close() error {
|
|
||||||
s.shutdownLock.Lock()
|
|
||||||
defer s.shutdownLock.Unlock()
|
|
||||||
|
|
||||||
if s.shutdown {
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
s.shutdown = true
|
|
||||||
if s.shutdownErr == nil {
|
|
||||||
s.shutdownErr = ErrSessionShutdown
|
|
||||||
}
|
|
||||||
close(s.shutdownCh)
|
|
||||||
s.conn.Close()
|
|
||||||
<-s.recvDoneCh
|
|
||||||
|
|
||||||
s.streamLock.Lock()
|
|
||||||
defer s.streamLock.Unlock()
|
|
||||||
for _, stream := range s.streams {
|
|
||||||
stream.forceClose()
|
|
||||||
}
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// exitErr is used to handle an error that is causing the
|
|
||||||
// session to terminate.
|
|
||||||
func (s *Session) exitErr(err error) {
|
|
||||||
s.shutdownLock.Lock()
|
|
||||||
if s.shutdownErr == nil {
|
|
||||||
s.shutdownErr = err
|
|
||||||
}
|
|
||||||
s.shutdownLock.Unlock()
|
|
||||||
s.Close()
|
|
||||||
}
|
|
||||||
|
|
||||||
// GoAway can be used to prevent accepting further
|
|
||||||
// connections. It does not close the underlying conn.
|
|
||||||
func (s *Session) GoAway() error {
|
|
||||||
return s.waitForSend(s.goAway(goAwayNormal), nil)
|
|
||||||
}
|
|
||||||
|
|
||||||
// goAway is used to send a goAway message
|
|
||||||
func (s *Session) goAway(reason uint32) header {
|
|
||||||
atomic.SwapInt32(&s.localGoAway, 1)
|
|
||||||
hdr := header(make([]byte, headerSize))
|
|
||||||
hdr.encode(typeGoAway, 0, 0, reason)
|
|
||||||
return hdr
|
|
||||||
}
|
|
||||||
|
|
||||||
// Ping is used to measure the RTT response time
|
|
||||||
func (s *Session) Ping() (time.Duration, error) {
|
|
||||||
// Get a channel for the ping
|
|
||||||
ch := make(chan struct{})
|
|
||||||
|
|
||||||
// Get a new ping id, mark as pending
|
|
||||||
s.pingLock.Lock()
|
|
||||||
id := s.pingID
|
|
||||||
s.pingID++
|
|
||||||
s.pings[id] = ch
|
|
||||||
s.pingLock.Unlock()
|
|
||||||
|
|
||||||
// Send the ping request
|
|
||||||
hdr := header(make([]byte, headerSize))
|
|
||||||
hdr.encode(typePing, flagSYN, 0, id)
|
|
||||||
if err := s.waitForSend(hdr, nil); err != nil {
|
|
||||||
return 0, err
|
|
||||||
}
|
|
||||||
|
|
||||||
// Wait for a response
|
|
||||||
start := time.Now()
|
|
||||||
select {
|
|
||||||
case <-ch:
|
|
||||||
case <-time.After(s.config.ConnectionWriteTimeout):
|
|
||||||
s.pingLock.Lock()
|
|
||||||
delete(s.pings, id) // Ignore it if a response comes later.
|
|
||||||
s.pingLock.Unlock()
|
|
||||||
return 0, ErrTimeout
|
|
||||||
case <-s.shutdownCh:
|
|
||||||
return 0, ErrSessionShutdown
|
|
||||||
}
|
|
||||||
|
|
||||||
// Compute the RTT
|
|
||||||
return time.Now().Sub(start), nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// keepalive is a long running goroutine that periodically does
|
|
||||||
// a ping to keep the connection alive.
|
|
||||||
func (s *Session) keepalive() {
|
|
||||||
for {
|
|
||||||
select {
|
|
||||||
case <-time.After(s.config.KeepAliveInterval):
|
|
||||||
_, err := s.Ping()
|
|
||||||
if err != nil {
|
|
||||||
if err != ErrSessionShutdown {
|
|
||||||
s.logger.Printf("[ERR] yamux: keepalive failed: %v", err)
|
|
||||||
s.exitErr(ErrKeepAliveTimeout)
|
|
||||||
}
|
|
||||||
return
|
|
||||||
}
|
|
||||||
case <-s.shutdownCh:
|
|
||||||
return
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// waitForSendErr waits to send a header, checking for a potential shutdown
|
|
||||||
func (s *Session) waitForSend(hdr header, body io.Reader) error {
|
|
||||||
errCh := make(chan error, 1)
|
|
||||||
return s.waitForSendErr(hdr, body, errCh)
|
|
||||||
}
|
|
||||||
|
|
||||||
// waitForSendErr waits to send a header with optional data, checking for a
|
|
||||||
// potential shutdown. Since there's the expectation that sends can happen
|
|
||||||
// in a timely manner, we enforce the connection write timeout here.
|
|
||||||
func (s *Session) waitForSendErr(hdr header, body io.Reader, errCh chan error) error {
|
|
||||||
t := timerPool.Get()
|
|
||||||
timer := t.(*time.Timer)
|
|
||||||
timer.Reset(s.config.ConnectionWriteTimeout)
|
|
||||||
defer func() {
|
|
||||||
timer.Stop()
|
|
||||||
select {
|
|
||||||
case <-timer.C:
|
|
||||||
default:
|
|
||||||
}
|
|
||||||
timerPool.Put(t)
|
|
||||||
}()
|
|
||||||
|
|
||||||
ready := sendReady{Hdr: hdr, Body: body, Err: errCh}
|
|
||||||
select {
|
|
||||||
case s.sendCh <- ready:
|
|
||||||
case <-s.shutdownCh:
|
|
||||||
return ErrSessionShutdown
|
|
||||||
case <-timer.C:
|
|
||||||
return ErrConnectionWriteTimeout
|
|
||||||
}
|
|
||||||
|
|
||||||
select {
|
|
||||||
case err := <-errCh:
|
|
||||||
return err
|
|
||||||
case <-s.shutdownCh:
|
|
||||||
return ErrSessionShutdown
|
|
||||||
case <-timer.C:
|
|
||||||
return ErrConnectionWriteTimeout
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// sendNoWait does a send without waiting. Since there's the expectation that
|
|
||||||
// the send happens right here, we enforce the connection write timeout if we
|
|
||||||
// can't queue the header to be sent.
|
|
||||||
func (s *Session) sendNoWait(hdr header) error {
|
|
||||||
t := timerPool.Get()
|
|
||||||
timer := t.(*time.Timer)
|
|
||||||
timer.Reset(s.config.ConnectionWriteTimeout)
|
|
||||||
defer func() {
|
|
||||||
timer.Stop()
|
|
||||||
select {
|
|
||||||
case <-timer.C:
|
|
||||||
default:
|
|
||||||
}
|
|
||||||
timerPool.Put(t)
|
|
||||||
}()
|
|
||||||
|
|
||||||
select {
|
|
||||||
case s.sendCh <- sendReady{Hdr: hdr}:
|
|
||||||
return nil
|
|
||||||
case <-s.shutdownCh:
|
|
||||||
return ErrSessionShutdown
|
|
||||||
case <-timer.C:
|
|
||||||
return ErrConnectionWriteTimeout
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// send is a long running goroutine that sends data
|
|
||||||
func (s *Session) send() {
|
|
||||||
for {
|
|
||||||
select {
|
|
||||||
case ready := <-s.sendCh:
|
|
||||||
// Send a header if ready
|
|
||||||
if ready.Hdr != nil {
|
|
||||||
sent := 0
|
|
||||||
for sent < len(ready.Hdr) {
|
|
||||||
n, err := s.conn.Write(ready.Hdr[sent:])
|
|
||||||
if err != nil {
|
|
||||||
s.logger.Printf("[ERR] yamux: Failed to write header: %v", err)
|
|
||||||
asyncSendErr(ready.Err, err)
|
|
||||||
s.exitErr(err)
|
|
||||||
return
|
|
||||||
}
|
|
||||||
sent += n
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// Send data from a body if given
|
|
||||||
if ready.Body != nil {
|
|
||||||
_, err := io.Copy(s.conn, ready.Body)
|
|
||||||
if err != nil {
|
|
||||||
s.logger.Printf("[ERR] yamux: Failed to write body: %v", err)
|
|
||||||
asyncSendErr(ready.Err, err)
|
|
||||||
s.exitErr(err)
|
|
||||||
return
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// No error, successful send
|
|
||||||
asyncSendErr(ready.Err, nil)
|
|
||||||
case <-s.shutdownCh:
|
|
||||||
return
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// recv is a long running goroutine that accepts new data
|
|
||||||
func (s *Session) recv() {
|
|
||||||
if err := s.recvLoop(); err != nil {
|
|
||||||
s.exitErr(err)
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// Ensure that the index of the handler (typeData/typeWindowUpdate/etc) matches the message type
|
|
||||||
var (
|
|
||||||
handlers = []func(*Session, header) error{
|
|
||||||
typeData: (*Session).handleStreamMessage,
|
|
||||||
typeWindowUpdate: (*Session).handleStreamMessage,
|
|
||||||
typePing: (*Session).handlePing,
|
|
||||||
typeGoAway: (*Session).handleGoAway,
|
|
||||||
}
|
|
||||||
)
|
|
||||||
|
|
||||||
// recvLoop continues to receive data until a fatal error is encountered
|
|
||||||
func (s *Session) recvLoop() error {
|
|
||||||
defer close(s.recvDoneCh)
|
|
||||||
hdr := header(make([]byte, headerSize))
|
|
||||||
for {
|
|
||||||
// Read the header
|
|
||||||
if _, err := io.ReadFull(s.bufRead, hdr); err != nil {
|
|
||||||
if err != io.EOF && !strings.Contains(err.Error(), "closed") && !strings.Contains(err.Error(), "reset by peer") {
|
|
||||||
s.logger.Printf("[ERR] yamux: Failed to read header: %v", err)
|
|
||||||
}
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
|
|
||||||
// Verify the version
|
|
||||||
if hdr.Version() != protoVersion {
|
|
||||||
s.logger.Printf("[ERR] yamux: Invalid protocol version: %d", hdr.Version())
|
|
||||||
return ErrInvalidVersion
|
|
||||||
}
|
|
||||||
|
|
||||||
mt := hdr.MsgType()
|
|
||||||
if mt < typeData || mt > typeGoAway {
|
|
||||||
return ErrInvalidMsgType
|
|
||||||
}
|
|
||||||
|
|
||||||
if err := handlers[mt](s, hdr); err != nil {
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// handleStreamMessage handles either a data or window update frame
|
|
||||||
func (s *Session) handleStreamMessage(hdr header) error {
|
|
||||||
// Check for a new stream creation
|
|
||||||
id := hdr.StreamID()
|
|
||||||
flags := hdr.Flags()
|
|
||||||
if flags&flagSYN == flagSYN {
|
|
||||||
if err := s.incomingStream(id); err != nil {
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// Get the stream
|
|
||||||
s.streamLock.Lock()
|
|
||||||
stream := s.streams[id]
|
|
||||||
s.streamLock.Unlock()
|
|
||||||
|
|
||||||
// If we do not have a stream, likely we sent a RST
|
|
||||||
if stream == nil {
|
|
||||||
// Drain any data on the wire
|
|
||||||
if hdr.MsgType() == typeData && hdr.Length() > 0 {
|
|
||||||
s.logger.Printf("[WARN] yamux: Discarding data for stream: %d", id)
|
|
||||||
if _, err := io.CopyN(ioutil.Discard, s.bufRead, int64(hdr.Length())); err != nil {
|
|
||||||
s.logger.Printf("[ERR] yamux: Failed to discard data: %v", err)
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
s.logger.Printf("[WARN] yamux: frame for missing stream: %v", hdr)
|
|
||||||
}
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// Check if this is a window update
|
|
||||||
if hdr.MsgType() == typeWindowUpdate {
|
|
||||||
if err := stream.incrSendWindow(hdr, flags); err != nil {
|
|
||||||
if sendErr := s.sendNoWait(s.goAway(goAwayProtoErr)); sendErr != nil {
|
|
||||||
s.logger.Printf("[WARN] yamux: failed to send go away: %v", sendErr)
|
|
||||||
}
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// Read the new data
|
|
||||||
if err := stream.readData(hdr, flags, s.bufRead); err != nil {
|
|
||||||
if sendErr := s.sendNoWait(s.goAway(goAwayProtoErr)); sendErr != nil {
|
|
||||||
s.logger.Printf("[WARN] yamux: failed to send go away: %v", sendErr)
|
|
||||||
}
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// handlePing is invokde for a typePing frame
|
|
||||||
func (s *Session) handlePing(hdr header) error {
|
|
||||||
flags := hdr.Flags()
|
|
||||||
pingID := hdr.Length()
|
|
||||||
|
|
||||||
// Check if this is a query, respond back in a separate context so we
|
|
||||||
// don't interfere with the receiving thread blocking for the write.
|
|
||||||
if flags&flagSYN == flagSYN {
|
|
||||||
go func() {
|
|
||||||
hdr := header(make([]byte, headerSize))
|
|
||||||
hdr.encode(typePing, flagACK, 0, pingID)
|
|
||||||
if err := s.sendNoWait(hdr); err != nil {
|
|
||||||
s.logger.Printf("[WARN] yamux: failed to send ping reply: %v", err)
|
|
||||||
}
|
|
||||||
}()
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// Handle a response
|
|
||||||
s.pingLock.Lock()
|
|
||||||
ch := s.pings[pingID]
|
|
||||||
if ch != nil {
|
|
||||||
delete(s.pings, pingID)
|
|
||||||
close(ch)
|
|
||||||
}
|
|
||||||
s.pingLock.Unlock()
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// handleGoAway is invokde for a typeGoAway frame
|
|
||||||
func (s *Session) handleGoAway(hdr header) error {
|
|
||||||
code := hdr.Length()
|
|
||||||
switch code {
|
|
||||||
case goAwayNormal:
|
|
||||||
atomic.SwapInt32(&s.remoteGoAway, 1)
|
|
||||||
case goAwayProtoErr:
|
|
||||||
s.logger.Printf("[ERR] yamux: received protocol error go away")
|
|
||||||
return fmt.Errorf("yamux protocol error")
|
|
||||||
case goAwayInternalErr:
|
|
||||||
s.logger.Printf("[ERR] yamux: received internal error go away")
|
|
||||||
return fmt.Errorf("remote yamux internal error")
|
|
||||||
default:
|
|
||||||
s.logger.Printf("[ERR] yamux: received unexpected go away")
|
|
||||||
return fmt.Errorf("unexpected go away received")
|
|
||||||
}
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// incomingStream is used to create a new incoming stream
|
|
||||||
func (s *Session) incomingStream(id uint32) error {
|
|
||||||
// Reject immediately if we are doing a go away
|
|
||||||
if atomic.LoadInt32(&s.localGoAway) == 1 {
|
|
||||||
hdr := header(make([]byte, headerSize))
|
|
||||||
hdr.encode(typeWindowUpdate, flagRST, id, 0)
|
|
||||||
return s.sendNoWait(hdr)
|
|
||||||
}
|
|
||||||
|
|
||||||
// Allocate a new stream
|
|
||||||
stream := newStream(s, id, streamSYNReceived)
|
|
||||||
|
|
||||||
s.streamLock.Lock()
|
|
||||||
defer s.streamLock.Unlock()
|
|
||||||
|
|
||||||
// Check if stream already exists
|
|
||||||
if _, ok := s.streams[id]; ok {
|
|
||||||
s.logger.Printf("[ERR] yamux: duplicate stream declared")
|
|
||||||
if sendErr := s.sendNoWait(s.goAway(goAwayProtoErr)); sendErr != nil {
|
|
||||||
s.logger.Printf("[WARN] yamux: failed to send go away: %v", sendErr)
|
|
||||||
}
|
|
||||||
return ErrDuplicateStream
|
|
||||||
}
|
|
||||||
|
|
||||||
// Register the stream
|
|
||||||
s.streams[id] = stream
|
|
||||||
|
|
||||||
// Check if we've exceeded the backlog
|
|
||||||
select {
|
|
||||||
case s.acceptCh <- stream:
|
|
||||||
return nil
|
|
||||||
default:
|
|
||||||
// Backlog exceeded! RST the stream
|
|
||||||
s.logger.Printf("[WARN] yamux: backlog exceeded, forcing connection reset")
|
|
||||||
delete(s.streams, id)
|
|
||||||
stream.sendHdr.encode(typeWindowUpdate, flagRST, id, 0)
|
|
||||||
return s.sendNoWait(stream.sendHdr)
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// closeStream is used to close a stream once both sides have
|
|
||||||
// issued a close. If there was an in-flight SYN and the stream
|
|
||||||
// was not yet established, then this will give the credit back.
|
|
||||||
func (s *Session) closeStream(id uint32) {
|
|
||||||
s.streamLock.Lock()
|
|
||||||
if _, ok := s.inflight[id]; ok {
|
|
||||||
select {
|
|
||||||
case <-s.synCh:
|
|
||||||
default:
|
|
||||||
s.logger.Printf("[ERR] yamux: SYN tracking out of sync")
|
|
||||||
}
|
|
||||||
}
|
|
||||||
delete(s.streams, id)
|
|
||||||
s.streamLock.Unlock()
|
|
||||||
}
|
|
||||||
|
|
||||||
// establishStream is used to mark a stream that was in the
|
|
||||||
// SYN Sent state as established.
|
|
||||||
func (s *Session) establishStream(id uint32) {
|
|
||||||
s.streamLock.Lock()
|
|
||||||
if _, ok := s.inflight[id]; ok {
|
|
||||||
delete(s.inflight, id)
|
|
||||||
} else {
|
|
||||||
s.logger.Printf("[ERR] yamux: established stream without inflight SYN (no tracking entry)")
|
|
||||||
}
|
|
||||||
select {
|
|
||||||
case <-s.synCh:
|
|
||||||
default:
|
|
||||||
s.logger.Printf("[ERR] yamux: established stream without inflight SYN (didn't have semaphore)")
|
|
||||||
}
|
|
||||||
s.streamLock.Unlock()
|
|
||||||
}
|
|
||||||
140
src/runtime/vendor/github.com/hashicorp/yamux/spec.md
generated
vendored
140
src/runtime/vendor/github.com/hashicorp/yamux/spec.md
generated
vendored
@@ -1,140 +0,0 @@
|
|||||||
# Specification
|
|
||||||
|
|
||||||
We use this document to detail the internal specification of Yamux.
|
|
||||||
This is used both as a guide for implementing Yamux, but also for
|
|
||||||
alternative interoperable libraries to be built.
|
|
||||||
|
|
||||||
# Framing
|
|
||||||
|
|
||||||
Yamux uses a streaming connection underneath, but imposes a message
|
|
||||||
framing so that it can be shared between many logical streams. Each
|
|
||||||
frame contains a header like:
|
|
||||||
|
|
||||||
* Version (8 bits)
|
|
||||||
* Type (8 bits)
|
|
||||||
* Flags (16 bits)
|
|
||||||
* StreamID (32 bits)
|
|
||||||
* Length (32 bits)
|
|
||||||
|
|
||||||
This means that each header has a 12 byte overhead.
|
|
||||||
All fields are encoded in network order (big endian).
|
|
||||||
Each field is described below:
|
|
||||||
|
|
||||||
## Version Field
|
|
||||||
|
|
||||||
The version field is used for future backward compatibility. At the
|
|
||||||
current time, the field is always set to 0, to indicate the initial
|
|
||||||
version.
|
|
||||||
|
|
||||||
## Type Field
|
|
||||||
|
|
||||||
The type field is used to switch the frame message type. The following
|
|
||||||
message types are supported:
|
|
||||||
|
|
||||||
* 0x0 Data - Used to transmit data. May transmit zero length payloads
|
|
||||||
depending on the flags.
|
|
||||||
|
|
||||||
* 0x1 Window Update - Used to updated the senders receive window size.
|
|
||||||
This is used to implement per-session flow control.
|
|
||||||
|
|
||||||
* 0x2 Ping - Used to measure RTT. It can also be used to heart-beat
|
|
||||||
and do keep-alives over TCP.
|
|
||||||
|
|
||||||
* 0x3 Go Away - Used to close a session.
|
|
||||||
|
|
||||||
## Flag Field
|
|
||||||
|
|
||||||
The flags field is used to provide additional information related
|
|
||||||
to the message type. The following flags are supported:
|
|
||||||
|
|
||||||
* 0x1 SYN - Signals the start of a new stream. May be sent with a data or
|
|
||||||
window update message. Also sent with a ping to indicate outbound.
|
|
||||||
|
|
||||||
* 0x2 ACK - Acknowledges the start of a new stream. May be sent with a data
|
|
||||||
or window update message. Also sent with a ping to indicate response.
|
|
||||||
|
|
||||||
* 0x4 FIN - Performs a half-close of a stream. May be sent with a data
|
|
||||||
message or window update.
|
|
||||||
|
|
||||||
* 0x8 RST - Reset a stream immediately. May be sent with a data or
|
|
||||||
window update message.
|
|
||||||
|
|
||||||
## StreamID Field
|
|
||||||
|
|
||||||
The StreamID field is used to identify the logical stream the frame
|
|
||||||
is addressing. The client side should use odd ID's, and the server even.
|
|
||||||
This prevents any collisions. Additionally, the 0 ID is reserved to represent
|
|
||||||
the session.
|
|
||||||
|
|
||||||
Both Ping and Go Away messages should always use the 0 StreamID.
|
|
||||||
|
|
||||||
## Length Field
|
|
||||||
|
|
||||||
The meaning of the length field depends on the message type:
|
|
||||||
|
|
||||||
* Data - provides the length of bytes following the header
|
|
||||||
* Window update - provides a delta update to the window size
|
|
||||||
* Ping - Contains an opaque value, echoed back
|
|
||||||
* Go Away - Contains an error code
|
|
||||||
|
|
||||||
# Message Flow
|
|
||||||
|
|
||||||
There is no explicit connection setup, as Yamux relies on an underlying
|
|
||||||
transport to be provided. However, there is a distinction between client
|
|
||||||
and server side of the connection.
|
|
||||||
|
|
||||||
## Opening a stream
|
|
||||||
|
|
||||||
To open a stream, an initial data or window update frame is sent
|
|
||||||
with a new StreamID. The SYN flag should be set to signal a new stream.
|
|
||||||
|
|
||||||
The receiver must then reply with either a data or window update frame
|
|
||||||
with the StreamID along with the ACK flag to accept the stream or with
|
|
||||||
the RST flag to reject the stream.
|
|
||||||
|
|
||||||
Because we are relying on the reliable stream underneath, a connection
|
|
||||||
can begin sending data once the SYN flag is sent. The corresponding
|
|
||||||
ACK does not need to be received. This is particularly well suited
|
|
||||||
for an RPC system where a client wants to open a stream and immediately
|
|
||||||
fire a request without waiting for the RTT of the ACK.
|
|
||||||
|
|
||||||
This does introduce the possibility of a connection being rejected
|
|
||||||
after data has been sent already. This is a slight semantic difference
|
|
||||||
from TCP, where the conection cannot be refused after it is opened.
|
|
||||||
Clients should be prepared to handle this by checking for an error
|
|
||||||
that indicates a RST was received.
|
|
||||||
|
|
||||||
## Closing a stream
|
|
||||||
|
|
||||||
To close a stream, either side sends a data or window update frame
|
|
||||||
along with the FIN flag. This does a half-close indicating the sender
|
|
||||||
will send no further data.
|
|
||||||
|
|
||||||
Once both sides have closed the connection, the stream is closed.
|
|
||||||
|
|
||||||
Alternatively, if an error occurs, the RST flag can be used to
|
|
||||||
hard close a stream immediately.
|
|
||||||
|
|
||||||
## Flow Control
|
|
||||||
|
|
||||||
When Yamux is initially starts each stream with a 256KB window size.
|
|
||||||
There is no window size for the session.
|
|
||||||
|
|
||||||
To prevent the streams from stalling, window update frames should be
|
|
||||||
sent regularly. Yamux can be configured to provide a larger limit for
|
|
||||||
windows sizes. Both sides assume the initial 256KB window, but can
|
|
||||||
immediately send a window update as part of the SYN/ACK indicating a
|
|
||||||
larger window.
|
|
||||||
|
|
||||||
Both sides should track the number of bytes sent in Data frames
|
|
||||||
only, as only they are tracked as part of the window size.
|
|
||||||
|
|
||||||
## Session termination
|
|
||||||
|
|
||||||
When a session is being terminated, the Go Away message should
|
|
||||||
be sent. The Length should be set to one of the following to
|
|
||||||
provide an error code:
|
|
||||||
|
|
||||||
* 0x0 Normal termination
|
|
||||||
* 0x1 Protocol error
|
|
||||||
* 0x2 Internal error
|
|
||||||
470
src/runtime/vendor/github.com/hashicorp/yamux/stream.go
generated
vendored
470
src/runtime/vendor/github.com/hashicorp/yamux/stream.go
generated
vendored
@@ -1,470 +0,0 @@
|
|||||||
package yamux
|
|
||||||
|
|
||||||
import (
|
|
||||||
"bytes"
|
|
||||||
"io"
|
|
||||||
"sync"
|
|
||||||
"sync/atomic"
|
|
||||||
"time"
|
|
||||||
)
|
|
||||||
|
|
||||||
type streamState int
|
|
||||||
|
|
||||||
const (
|
|
||||||
streamInit streamState = iota
|
|
||||||
streamSYNSent
|
|
||||||
streamSYNReceived
|
|
||||||
streamEstablished
|
|
||||||
streamLocalClose
|
|
||||||
streamRemoteClose
|
|
||||||
streamClosed
|
|
||||||
streamReset
|
|
||||||
)
|
|
||||||
|
|
||||||
// Stream is used to represent a logical stream
|
|
||||||
// within a session.
|
|
||||||
type Stream struct {
|
|
||||||
recvWindow uint32
|
|
||||||
sendWindow uint32
|
|
||||||
|
|
||||||
id uint32
|
|
||||||
session *Session
|
|
||||||
|
|
||||||
state streamState
|
|
||||||
stateLock sync.Mutex
|
|
||||||
|
|
||||||
recvBuf *bytes.Buffer
|
|
||||||
recvLock sync.Mutex
|
|
||||||
|
|
||||||
controlHdr header
|
|
||||||
controlErr chan error
|
|
||||||
controlHdrLock sync.Mutex
|
|
||||||
|
|
||||||
sendHdr header
|
|
||||||
sendErr chan error
|
|
||||||
sendLock sync.Mutex
|
|
||||||
|
|
||||||
recvNotifyCh chan struct{}
|
|
||||||
sendNotifyCh chan struct{}
|
|
||||||
|
|
||||||
readDeadline atomic.Value // time.Time
|
|
||||||
writeDeadline atomic.Value // time.Time
|
|
||||||
}
|
|
||||||
|
|
||||||
// newStream is used to construct a new stream within
|
|
||||||
// a given session for an ID
|
|
||||||
func newStream(session *Session, id uint32, state streamState) *Stream {
|
|
||||||
s := &Stream{
|
|
||||||
id: id,
|
|
||||||
session: session,
|
|
||||||
state: state,
|
|
||||||
controlHdr: header(make([]byte, headerSize)),
|
|
||||||
controlErr: make(chan error, 1),
|
|
||||||
sendHdr: header(make([]byte, headerSize)),
|
|
||||||
sendErr: make(chan error, 1),
|
|
||||||
recvWindow: initialStreamWindow,
|
|
||||||
sendWindow: initialStreamWindow,
|
|
||||||
recvNotifyCh: make(chan struct{}, 1),
|
|
||||||
sendNotifyCh: make(chan struct{}, 1),
|
|
||||||
}
|
|
||||||
s.readDeadline.Store(time.Time{})
|
|
||||||
s.writeDeadline.Store(time.Time{})
|
|
||||||
return s
|
|
||||||
}
|
|
||||||
|
|
||||||
// Session returns the associated stream session
|
|
||||||
func (s *Stream) Session() *Session {
|
|
||||||
return s.session
|
|
||||||
}
|
|
||||||
|
|
||||||
// StreamID returns the ID of this stream
|
|
||||||
func (s *Stream) StreamID() uint32 {
|
|
||||||
return s.id
|
|
||||||
}
|
|
||||||
|
|
||||||
// Read is used to read from the stream
|
|
||||||
func (s *Stream) Read(b []byte) (n int, err error) {
|
|
||||||
defer asyncNotify(s.recvNotifyCh)
|
|
||||||
START:
|
|
||||||
s.stateLock.Lock()
|
|
||||||
switch s.state {
|
|
||||||
case streamLocalClose:
|
|
||||||
fallthrough
|
|
||||||
case streamRemoteClose:
|
|
||||||
fallthrough
|
|
||||||
case streamClosed:
|
|
||||||
s.recvLock.Lock()
|
|
||||||
if s.recvBuf == nil || s.recvBuf.Len() == 0 {
|
|
||||||
s.recvLock.Unlock()
|
|
||||||
s.stateLock.Unlock()
|
|
||||||
return 0, io.EOF
|
|
||||||
}
|
|
||||||
s.recvLock.Unlock()
|
|
||||||
case streamReset:
|
|
||||||
s.stateLock.Unlock()
|
|
||||||
return 0, ErrConnectionReset
|
|
||||||
}
|
|
||||||
s.stateLock.Unlock()
|
|
||||||
|
|
||||||
// If there is no data available, block
|
|
||||||
s.recvLock.Lock()
|
|
||||||
if s.recvBuf == nil || s.recvBuf.Len() == 0 {
|
|
||||||
s.recvLock.Unlock()
|
|
||||||
goto WAIT
|
|
||||||
}
|
|
||||||
|
|
||||||
// Read any bytes
|
|
||||||
n, _ = s.recvBuf.Read(b)
|
|
||||||
s.recvLock.Unlock()
|
|
||||||
|
|
||||||
// Send a window update potentially
|
|
||||||
err = s.sendWindowUpdate()
|
|
||||||
return n, err
|
|
||||||
|
|
||||||
WAIT:
|
|
||||||
var timeout <-chan time.Time
|
|
||||||
var timer *time.Timer
|
|
||||||
readDeadline := s.readDeadline.Load().(time.Time)
|
|
||||||
if !readDeadline.IsZero() {
|
|
||||||
delay := readDeadline.Sub(time.Now())
|
|
||||||
timer = time.NewTimer(delay)
|
|
||||||
timeout = timer.C
|
|
||||||
}
|
|
||||||
select {
|
|
||||||
case <-s.recvNotifyCh:
|
|
||||||
if timer != nil {
|
|
||||||
timer.Stop()
|
|
||||||
}
|
|
||||||
goto START
|
|
||||||
case <-timeout:
|
|
||||||
return 0, ErrTimeout
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// Write is used to write to the stream
|
|
||||||
func (s *Stream) Write(b []byte) (n int, err error) {
|
|
||||||
s.sendLock.Lock()
|
|
||||||
defer s.sendLock.Unlock()
|
|
||||||
total := 0
|
|
||||||
for total < len(b) {
|
|
||||||
n, err := s.write(b[total:])
|
|
||||||
total += n
|
|
||||||
if err != nil {
|
|
||||||
return total, err
|
|
||||||
}
|
|
||||||
}
|
|
||||||
return total, nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// write is used to write to the stream, may return on
|
|
||||||
// a short write.
|
|
||||||
func (s *Stream) write(b []byte) (n int, err error) {
|
|
||||||
var flags uint16
|
|
||||||
var max uint32
|
|
||||||
var body io.Reader
|
|
||||||
START:
|
|
||||||
s.stateLock.Lock()
|
|
||||||
switch s.state {
|
|
||||||
case streamLocalClose:
|
|
||||||
fallthrough
|
|
||||||
case streamClosed:
|
|
||||||
s.stateLock.Unlock()
|
|
||||||
return 0, ErrStreamClosed
|
|
||||||
case streamReset:
|
|
||||||
s.stateLock.Unlock()
|
|
||||||
return 0, ErrConnectionReset
|
|
||||||
}
|
|
||||||
s.stateLock.Unlock()
|
|
||||||
|
|
||||||
// If there is no data available, block
|
|
||||||
window := atomic.LoadUint32(&s.sendWindow)
|
|
||||||
if window == 0 {
|
|
||||||
goto WAIT
|
|
||||||
}
|
|
||||||
|
|
||||||
// Determine the flags if any
|
|
||||||
flags = s.sendFlags()
|
|
||||||
|
|
||||||
// Send up to our send window
|
|
||||||
max = min(window, uint32(len(b)))
|
|
||||||
body = bytes.NewReader(b[:max])
|
|
||||||
|
|
||||||
// Send the header
|
|
||||||
s.sendHdr.encode(typeData, flags, s.id, max)
|
|
||||||
if err = s.session.waitForSendErr(s.sendHdr, body, s.sendErr); err != nil {
|
|
||||||
return 0, err
|
|
||||||
}
|
|
||||||
|
|
||||||
// Reduce our send window
|
|
||||||
atomic.AddUint32(&s.sendWindow, ^uint32(max-1))
|
|
||||||
|
|
||||||
// Unlock
|
|
||||||
return int(max), err
|
|
||||||
|
|
||||||
WAIT:
|
|
||||||
var timeout <-chan time.Time
|
|
||||||
writeDeadline := s.writeDeadline.Load().(time.Time)
|
|
||||||
if !writeDeadline.IsZero() {
|
|
||||||
delay := writeDeadline.Sub(time.Now())
|
|
||||||
timeout = time.After(delay)
|
|
||||||
}
|
|
||||||
select {
|
|
||||||
case <-s.sendNotifyCh:
|
|
||||||
goto START
|
|
||||||
case <-timeout:
|
|
||||||
return 0, ErrTimeout
|
|
||||||
}
|
|
||||||
return 0, nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// sendFlags determines any flags that are appropriate
|
|
||||||
// based on the current stream state
|
|
||||||
func (s *Stream) sendFlags() uint16 {
|
|
||||||
s.stateLock.Lock()
|
|
||||||
defer s.stateLock.Unlock()
|
|
||||||
var flags uint16
|
|
||||||
switch s.state {
|
|
||||||
case streamInit:
|
|
||||||
flags |= flagSYN
|
|
||||||
s.state = streamSYNSent
|
|
||||||
case streamSYNReceived:
|
|
||||||
flags |= flagACK
|
|
||||||
s.state = streamEstablished
|
|
||||||
}
|
|
||||||
return flags
|
|
||||||
}
|
|
||||||
|
|
||||||
// sendWindowUpdate potentially sends a window update enabling
|
|
||||||
// further writes to take place. Must be invoked with the lock.
|
|
||||||
func (s *Stream) sendWindowUpdate() error {
|
|
||||||
s.controlHdrLock.Lock()
|
|
||||||
defer s.controlHdrLock.Unlock()
|
|
||||||
|
|
||||||
// Determine the delta update
|
|
||||||
max := s.session.config.MaxStreamWindowSize
|
|
||||||
var bufLen uint32
|
|
||||||
s.recvLock.Lock()
|
|
||||||
if s.recvBuf != nil {
|
|
||||||
bufLen = uint32(s.recvBuf.Len())
|
|
||||||
}
|
|
||||||
delta := (max - bufLen) - s.recvWindow
|
|
||||||
|
|
||||||
// Determine the flags if any
|
|
||||||
flags := s.sendFlags()
|
|
||||||
|
|
||||||
// Check if we can omit the update
|
|
||||||
if delta < (max/2) && flags == 0 {
|
|
||||||
s.recvLock.Unlock()
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// Update our window
|
|
||||||
s.recvWindow += delta
|
|
||||||
s.recvLock.Unlock()
|
|
||||||
|
|
||||||
// Send the header
|
|
||||||
s.controlHdr.encode(typeWindowUpdate, flags, s.id, delta)
|
|
||||||
if err := s.session.waitForSendErr(s.controlHdr, nil, s.controlErr); err != nil {
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// sendClose is used to send a FIN
|
|
||||||
func (s *Stream) sendClose() error {
|
|
||||||
s.controlHdrLock.Lock()
|
|
||||||
defer s.controlHdrLock.Unlock()
|
|
||||||
|
|
||||||
flags := s.sendFlags()
|
|
||||||
flags |= flagFIN
|
|
||||||
s.controlHdr.encode(typeWindowUpdate, flags, s.id, 0)
|
|
||||||
if err := s.session.waitForSendErr(s.controlHdr, nil, s.controlErr); err != nil {
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// Close is used to close the stream
|
|
||||||
func (s *Stream) Close() error {
|
|
||||||
closeStream := false
|
|
||||||
s.stateLock.Lock()
|
|
||||||
switch s.state {
|
|
||||||
// Opened means we need to signal a close
|
|
||||||
case streamSYNSent:
|
|
||||||
fallthrough
|
|
||||||
case streamSYNReceived:
|
|
||||||
fallthrough
|
|
||||||
case streamEstablished:
|
|
||||||
s.state = streamLocalClose
|
|
||||||
goto SEND_CLOSE
|
|
||||||
|
|
||||||
case streamLocalClose:
|
|
||||||
case streamRemoteClose:
|
|
||||||
s.state = streamClosed
|
|
||||||
closeStream = true
|
|
||||||
goto SEND_CLOSE
|
|
||||||
|
|
||||||
case streamClosed:
|
|
||||||
case streamReset:
|
|
||||||
default:
|
|
||||||
panic("unhandled state")
|
|
||||||
}
|
|
||||||
s.stateLock.Unlock()
|
|
||||||
return nil
|
|
||||||
SEND_CLOSE:
|
|
||||||
s.stateLock.Unlock()
|
|
||||||
s.sendClose()
|
|
||||||
s.notifyWaiting()
|
|
||||||
if closeStream {
|
|
||||||
s.session.closeStream(s.id)
|
|
||||||
}
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// forceClose is used for when the session is exiting
|
|
||||||
func (s *Stream) forceClose() {
|
|
||||||
s.stateLock.Lock()
|
|
||||||
s.state = streamClosed
|
|
||||||
s.stateLock.Unlock()
|
|
||||||
s.notifyWaiting()
|
|
||||||
}
|
|
||||||
|
|
||||||
// processFlags is used to update the state of the stream
|
|
||||||
// based on set flags, if any. Lock must be held
|
|
||||||
func (s *Stream) processFlags(flags uint16) error {
|
|
||||||
// Close the stream without holding the state lock
|
|
||||||
closeStream := false
|
|
||||||
defer func() {
|
|
||||||
if closeStream {
|
|
||||||
s.session.closeStream(s.id)
|
|
||||||
}
|
|
||||||
}()
|
|
||||||
|
|
||||||
s.stateLock.Lock()
|
|
||||||
defer s.stateLock.Unlock()
|
|
||||||
if flags&flagACK == flagACK {
|
|
||||||
if s.state == streamSYNSent {
|
|
||||||
s.state = streamEstablished
|
|
||||||
}
|
|
||||||
s.session.establishStream(s.id)
|
|
||||||
}
|
|
||||||
if flags&flagFIN == flagFIN {
|
|
||||||
switch s.state {
|
|
||||||
case streamSYNSent:
|
|
||||||
fallthrough
|
|
||||||
case streamSYNReceived:
|
|
||||||
fallthrough
|
|
||||||
case streamEstablished:
|
|
||||||
s.state = streamRemoteClose
|
|
||||||
s.notifyWaiting()
|
|
||||||
case streamLocalClose:
|
|
||||||
s.state = streamClosed
|
|
||||||
closeStream = true
|
|
||||||
s.notifyWaiting()
|
|
||||||
default:
|
|
||||||
s.session.logger.Printf("[ERR] yamux: unexpected FIN flag in state %d", s.state)
|
|
||||||
return ErrUnexpectedFlag
|
|
||||||
}
|
|
||||||
}
|
|
||||||
if flags&flagRST == flagRST {
|
|
||||||
s.state = streamReset
|
|
||||||
closeStream = true
|
|
||||||
s.notifyWaiting()
|
|
||||||
}
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// notifyWaiting notifies all the waiting channels
|
|
||||||
func (s *Stream) notifyWaiting() {
|
|
||||||
asyncNotify(s.recvNotifyCh)
|
|
||||||
asyncNotify(s.sendNotifyCh)
|
|
||||||
}
|
|
||||||
|
|
||||||
// incrSendWindow updates the size of our send window
|
|
||||||
func (s *Stream) incrSendWindow(hdr header, flags uint16) error {
|
|
||||||
if err := s.processFlags(flags); err != nil {
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
|
|
||||||
// Increase window, unblock a sender
|
|
||||||
atomic.AddUint32(&s.sendWindow, hdr.Length())
|
|
||||||
asyncNotify(s.sendNotifyCh)
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// readData is used to handle a data frame
|
|
||||||
func (s *Stream) readData(hdr header, flags uint16, conn io.Reader) error {
|
|
||||||
if err := s.processFlags(flags); err != nil {
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
|
|
||||||
// Check that our recv window is not exceeded
|
|
||||||
length := hdr.Length()
|
|
||||||
if length == 0 {
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// Wrap in a limited reader
|
|
||||||
conn = &io.LimitedReader{R: conn, N: int64(length)}
|
|
||||||
|
|
||||||
// Copy into buffer
|
|
||||||
s.recvLock.Lock()
|
|
||||||
|
|
||||||
if length > s.recvWindow {
|
|
||||||
s.session.logger.Printf("[ERR] yamux: receive window exceeded (stream: %d, remain: %d, recv: %d)", s.id, s.recvWindow, length)
|
|
||||||
return ErrRecvWindowExceeded
|
|
||||||
}
|
|
||||||
|
|
||||||
if s.recvBuf == nil {
|
|
||||||
// Allocate the receive buffer just-in-time to fit the full data frame.
|
|
||||||
// This way we can read in the whole packet without further allocations.
|
|
||||||
s.recvBuf = bytes.NewBuffer(make([]byte, 0, length))
|
|
||||||
}
|
|
||||||
if _, err := io.Copy(s.recvBuf, conn); err != nil {
|
|
||||||
s.session.logger.Printf("[ERR] yamux: Failed to read stream data: %v", err)
|
|
||||||
s.recvLock.Unlock()
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
|
|
||||||
// Decrement the receive window
|
|
||||||
s.recvWindow -= length
|
|
||||||
s.recvLock.Unlock()
|
|
||||||
|
|
||||||
// Unblock any readers
|
|
||||||
asyncNotify(s.recvNotifyCh)
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// SetDeadline sets the read and write deadlines
|
|
||||||
func (s *Stream) SetDeadline(t time.Time) error {
|
|
||||||
if err := s.SetReadDeadline(t); err != nil {
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
if err := s.SetWriteDeadline(t); err != nil {
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// SetReadDeadline sets the deadline for future Read calls.
|
|
||||||
func (s *Stream) SetReadDeadline(t time.Time) error {
|
|
||||||
s.readDeadline.Store(t)
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// SetWriteDeadline sets the deadline for future Write calls
|
|
||||||
func (s *Stream) SetWriteDeadline(t time.Time) error {
|
|
||||||
s.writeDeadline.Store(t)
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// Shrink is used to compact the amount of buffers utilized
|
|
||||||
// This is useful when using Yamux in a connection pool to reduce
|
|
||||||
// the idle memory utilization.
|
|
||||||
func (s *Stream) Shrink() {
|
|
||||||
s.recvLock.Lock()
|
|
||||||
if s.recvBuf != nil && s.recvBuf.Len() == 0 {
|
|
||||||
s.recvBuf = nil
|
|
||||||
}
|
|
||||||
s.recvLock.Unlock()
|
|
||||||
}
|
|
||||||
43
src/runtime/vendor/github.com/hashicorp/yamux/util.go
generated
vendored
43
src/runtime/vendor/github.com/hashicorp/yamux/util.go
generated
vendored
@@ -1,43 +0,0 @@
|
|||||||
package yamux
|
|
||||||
|
|
||||||
import (
|
|
||||||
"sync"
|
|
||||||
"time"
|
|
||||||
)
|
|
||||||
|
|
||||||
var (
|
|
||||||
timerPool = &sync.Pool{
|
|
||||||
New: func() interface{} {
|
|
||||||
timer := time.NewTimer(time.Hour * 1e6)
|
|
||||||
timer.Stop()
|
|
||||||
return timer
|
|
||||||
},
|
|
||||||
}
|
|
||||||
)
|
|
||||||
|
|
||||||
// asyncSendErr is used to try an async send of an error
|
|
||||||
func asyncSendErr(ch chan error, err error) {
|
|
||||||
if ch == nil {
|
|
||||||
return
|
|
||||||
}
|
|
||||||
select {
|
|
||||||
case ch <- err:
|
|
||||||
default:
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// asyncNotify is used to signal a waiting goroutine
|
|
||||||
func asyncNotify(ch chan struct{}) {
|
|
||||||
select {
|
|
||||||
case ch <- struct{}{}:
|
|
||||||
default:
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// min computes the minimum of two values
|
|
||||||
func min(a, b uint32) uint32 {
|
|
||||||
if a < b {
|
|
||||||
return a
|
|
||||||
}
|
|
||||||
return b
|
|
||||||
}
|
|
||||||
25
src/runtime/vendor/github.com/intel/govmm/qemu/qemu.go
generated
vendored
25
src/runtime/vendor/github.com/intel/govmm/qemu/qemu.go
generated
vendored
@@ -288,6 +288,23 @@ func (object Object) QemuParams(config *Config) []string {
|
|||||||
return qemuParams
|
return qemuParams
|
||||||
}
|
}
|
||||||
|
|
||||||
|
// Virtio9PMultidev filesystem behaviour to deal
|
||||||
|
// with multiple devices being shared with a 9p export.
|
||||||
|
type Virtio9PMultidev string
|
||||||
|
|
||||||
|
const (
|
||||||
|
// Remap shares multiple devices with only one export.
|
||||||
|
Remap Virtio9PMultidev = "remap"
|
||||||
|
|
||||||
|
// Warn assumes that only one device is shared by the same export.
|
||||||
|
// Only a warning message is logged (once) by qemu on host side.
|
||||||
|
// This is the default behaviour.
|
||||||
|
Warn Virtio9PMultidev = "warn"
|
||||||
|
|
||||||
|
// Forbid like "warn" but also deny access to additional devices on guest.
|
||||||
|
Forbid Virtio9PMultidev = "forbid"
|
||||||
|
)
|
||||||
|
|
||||||
// FSDriver represents a qemu filesystem driver.
|
// FSDriver represents a qemu filesystem driver.
|
||||||
type FSDriver string
|
type FSDriver string
|
||||||
|
|
||||||
@@ -350,6 +367,10 @@ type FSDevice struct {
|
|||||||
|
|
||||||
// Transport is the virtio transport for this device.
|
// Transport is the virtio transport for this device.
|
||||||
Transport VirtioTransport
|
Transport VirtioTransport
|
||||||
|
|
||||||
|
// Multidev is the filesystem behaviour to deal
|
||||||
|
// with multiple devices being shared with a 9p export
|
||||||
|
Multidev Virtio9PMultidev
|
||||||
}
|
}
|
||||||
|
|
||||||
// Virtio9PTransport is a map of the virtio-9p device name that corresponds
|
// Virtio9PTransport is a map of the virtio-9p device name that corresponds
|
||||||
@@ -393,6 +414,10 @@ func (fsdev FSDevice) QemuParams(config *Config) []string {
|
|||||||
fsParams = append(fsParams, fmt.Sprintf(",path=%s", fsdev.Path))
|
fsParams = append(fsParams, fmt.Sprintf(",path=%s", fsdev.Path))
|
||||||
fsParams = append(fsParams, fmt.Sprintf(",security_model=%s", fsdev.SecurityModel))
|
fsParams = append(fsParams, fmt.Sprintf(",security_model=%s", fsdev.SecurityModel))
|
||||||
|
|
||||||
|
if fsdev.Multidev != "" {
|
||||||
|
fsParams = append(fsParams, fmt.Sprintf(",multidevs=%s", fsdev.Multidev))
|
||||||
|
}
|
||||||
|
|
||||||
qemuParams = append(qemuParams, "-device")
|
qemuParams = append(qemuParams, "-device")
|
||||||
qemuParams = append(qemuParams, strings.Join(deviceParams, ""))
|
qemuParams = append(qemuParams, strings.Join(deviceParams, ""))
|
||||||
|
|
||||||
|
|||||||
7
src/runtime/vendor/modules.txt
vendored
7
src/runtime/vendor/modules.txt
vendored
@@ -158,7 +158,6 @@ github.com/docker/docker/pkg/stringid
|
|||||||
## explicit
|
## explicit
|
||||||
github.com/docker/go-events
|
github.com/docker/go-events
|
||||||
# github.com/docker/go-units v0.3.3
|
# github.com/docker/go-units v0.3.3
|
||||||
## explicit
|
|
||||||
github.com/docker/go-units
|
github.com/docker/go-units
|
||||||
# github.com/globalsign/mgo v0.0.0-20181015135952-eeefdecb41b8
|
# github.com/globalsign/mgo v0.0.0-20181015135952-eeefdecb41b8
|
||||||
github.com/globalsign/mgo/bson
|
github.com/globalsign/mgo/bson
|
||||||
@@ -223,10 +222,7 @@ github.com/hashicorp/errwrap
|
|||||||
# github.com/hashicorp/go-multierror v1.0.0
|
# github.com/hashicorp/go-multierror v1.0.0
|
||||||
## explicit
|
## explicit
|
||||||
github.com/hashicorp/go-multierror
|
github.com/hashicorp/go-multierror
|
||||||
# github.com/hashicorp/yamux v0.0.0-20190923154419-df201c70410d
|
# github.com/intel/govmm v0.0.0-20200724170648-af9e34b91ae9
|
||||||
## explicit
|
|
||||||
github.com/hashicorp/yamux
|
|
||||||
# github.com/intel/govmm v0.0.0-20200602145448-7cc469641b7b
|
|
||||||
## explicit
|
## explicit
|
||||||
github.com/intel/govmm/qemu
|
github.com/intel/govmm/qemu
|
||||||
# github.com/konsorten/go-windows-terminal-sequences v1.0.1
|
# github.com/konsorten/go-windows-terminal-sequences v1.0.1
|
||||||
@@ -241,7 +237,6 @@ github.com/matttproud/golang_protobuf_extensions/pbutil
|
|||||||
## explicit
|
## explicit
|
||||||
github.com/mdlayher/vsock
|
github.com/mdlayher/vsock
|
||||||
# github.com/mitchellh/mapstructure v1.1.2
|
# github.com/mitchellh/mapstructure v1.1.2
|
||||||
## explicit
|
|
||||||
github.com/mitchellh/mapstructure
|
github.com/mitchellh/mapstructure
|
||||||
# github.com/opencontainers/go-digest v1.0.0-rc1
|
# github.com/opencontainers/go-digest v1.0.0-rc1
|
||||||
github.com/opencontainers/go-digest
|
github.com/opencontainers/go-digest
|
||||||
|
|||||||
Reference in New Issue
Block a user