81 lines
1.6 KiB
Go
81 lines
1.6 KiB
Go
package tcp
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import (
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"bytes"
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"fmt"
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"io"
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"net"
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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)
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func fakeRedis(t *testing.T, listener net.Listener) {
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for {
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conn, err := listener.Accept()
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fmt.Println("Accept on server")
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require.NoError(t, err)
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for {
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withErr := false
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buf := make([]byte, 64)
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if _, err := conn.Read(buf); err != nil {
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withErr = true
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}
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if string(buf[:4]) == "ping" {
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time.Sleep(1 * time.Millisecond)
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if _, err := conn.Write([]byte("PONG")); err != nil {
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conn.Close()
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return
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}
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}
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if withErr {
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conn.Close()
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return
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}
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}
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}
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}
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func TestCloseWrite(t *testing.T) {
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backendListener, err := net.Listen("tcp", ":0")
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require.NoError(t, err)
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go fakeRedis(t, backendListener)
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_, port, err := net.SplitHostPort(backendListener.Addr().String())
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require.NoError(t, err)
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proxy, err := NewProxy(":"+port, 10*time.Millisecond)
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require.NoError(t, err)
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proxyListener, err := net.Listen("tcp", ":0")
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require.NoError(t, err)
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go func() {
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for {
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conn, err := proxyListener.Accept()
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require.NoError(t, err)
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proxy.ServeTCP(conn.(*net.TCPConn))
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}
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}()
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_, port, err = net.SplitHostPort(proxyListener.Addr().String())
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require.NoError(t, err)
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conn, err := net.Dial("tcp", ":"+port)
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require.NoError(t, err)
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_, err = conn.Write([]byte("ping\n"))
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require.NoError(t, err)
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err = conn.(*net.TCPConn).CloseWrite()
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require.NoError(t, err)
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var buf []byte
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buffer := bytes.NewBuffer(buf)
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n, err := io.Copy(buffer, conn)
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require.NoError(t, err)
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require.Equal(t, int64(4), n)
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require.Equal(t, "PONG", buffer.String())
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}
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