99 lines
2.2 KiB
Go
99 lines
2.2 KiB
Go
package reuseport
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import (
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"fmt"
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"io/ioutil"
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"net"
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"testing"
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"time"
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)
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func TestNewListener(t *testing.T) {
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addr := "localhost:10081"
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serversCount := 20
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requestsCount := 1000
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var lns []net.Listener
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doneCh := make(chan struct{}, serversCount)
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for i := 0; i < serversCount; i++ {
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ln, err := Listen("tcp4", addr)
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if err != nil {
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t.Fatalf("cannot create listener %d: %s", i, err)
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}
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go func() {
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serveEcho(t, ln)
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doneCh <- struct{}{}
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}()
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lns = append(lns, ln)
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}
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for i := 0; i < requestsCount; i++ {
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c, err := net.Dial("tcp4", addr)
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if err != nil {
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t.Fatalf("%d. unexpected error when dialing: %s", i, err)
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}
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req := fmt.Sprintf("request number %d", i)
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if _, err = c.Write([]byte(req)); err != nil {
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t.Fatalf("%d. unexpected error when writing request: %s", i, err)
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}
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if err = c.(*net.TCPConn).CloseWrite(); err != nil {
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t.Fatalf("%d. unexpected error when closing write end of the connection: %s", i, err)
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}
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var resp []byte
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ch := make(chan struct{})
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go func() {
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if resp, err = ioutil.ReadAll(c); err != nil {
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t.Fatalf("%d. unexpected error when reading response: %s", i, err)
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}
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close(ch)
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}()
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select {
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case <-ch:
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case <-time.After(200 * time.Millisecond):
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t.Fatalf("%d. timeout when waiting for response: %s", i, err)
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}
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if string(resp) != req {
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t.Fatalf("%d. unexpected response %q. Expecting %q", i, resp, req)
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}
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if err = c.Close(); err != nil {
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t.Fatalf("%d. unexpected error when closing connection: %s", i, err)
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}
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}
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for _, ln := range lns {
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if err := ln.Close(); err != nil {
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t.Fatalf("unexpected error when closing listener: %s", err)
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}
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}
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for i := 0; i < serversCount; i++ {
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select {
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case <-doneCh:
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case <-time.After(200 * time.Millisecond):
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t.Fatalf("timeout when waiting for servers to be closed")
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}
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}
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}
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func serveEcho(t *testing.T, ln net.Listener) {
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for {
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c, err := ln.Accept()
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if err != nil {
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break
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}
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req, err := ioutil.ReadAll(c)
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if err != nil {
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t.Fatalf("unepxected error when reading request: %s", err)
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}
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if _, err = c.Write(req); err != nil {
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t.Fatalf("unexpected error when writing response: %s", err)
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}
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if err = c.Close(); err != nil {
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t.Fatalf("unexpected error when closing connection: %s", err)
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}
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}
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}
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