mirror of
https://github.com/k3s-io/kubernetes.git
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79 lines
2.1 KiB
Go
79 lines
2.1 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package proxy
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import (
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"fmt"
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"io"
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"net"
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"testing"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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)
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// a simple echoServer that only accepts one connection. Returns port actually
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// being listened on, or an error.
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func echoServer(t *testing.T, addr string) (string, error) {
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l, err := net.Listen("tcp", addr)
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if err != nil {
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return "", fmt.Errorf("failed to start echo service: %v", err)
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}
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go func() {
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defer l.Close()
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conn, err := l.Accept()
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if err != nil {
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t.Errorf("failed to accept new conn to echo service: %v", err)
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}
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io.Copy(conn, conn)
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conn.Close()
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}()
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_, port, err := net.SplitHostPort(l.Addr().String())
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return port, err
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}
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func TestProxy(t *testing.T) {
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port, err := echoServer(t, "127.0.0.1:0")
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if err != nil {
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t.Fatal(err)
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}
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lb := NewLoadBalancerRR()
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lb.OnUpdate([]api.Endpoints{{"echo", []string{net.JoinHostPort("127.0.0.1", port)}}})
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p := NewProxier(lb)
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proxyPort, err := p.addServiceOnUnusedPort("echo")
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if err != nil {
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t.Fatalf("error adding new service: %#v", err)
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}
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conn, err := net.Dial("tcp", net.JoinHostPort("127.0.0.1", proxyPort))
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if err != nil {
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t.Fatalf("error connecting to proxy: %v", err)
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}
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magic := "aaaaa"
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if _, err := conn.Write([]byte(magic)); err != nil {
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t.Fatalf("error writing to proxy: %v", err)
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}
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buf := make([]byte, 5)
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if _, err := conn.Read(buf); err != nil {
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t.Fatalf("error reading from proxy: %v", err)
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}
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if string(buf) != magic {
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t.Fatalf("bad echo from proxy: got: %q, expected %q", string(buf), magic)
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}
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}
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