Subversion Repositories openrisc

// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package net

import (
        "fmt"
        "runtime"
        "testing"
        "time"
)

func testTimeout(t *testing.T, network, addr string, readFrom bool) {
        fd, err := Dial(network, addr)
        if err != nil {
                t.Errorf("dial %s %s failed: %v", network, addr, err)
                return
        }
        defer fd.Close()
        what := "Read"
        if readFrom {
                what = "ReadFrom"
        }

        errc := make(chan error, 1)
        go func() {
                t0 := time.Now()
                fd.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
                var b [100]byte
                var n int
                var err1 error
                if readFrom {
                        n, _, err1 = fd.(PacketConn).ReadFrom(b[0:])
                } else {
                        n, err1 = fd.Read(b[0:])
                }
                t1 := time.Now()
                if n != 0 || err1 == nil || !err1.(Error).Timeout() {
                        errc <- fmt.Errorf("fd.%s on %s %s did not return 0, timeout: %v, %v", what, network, addr, n, err1)
                        return
                }
                if dt := t1.Sub(t0); dt < 50*time.Millisecond || dt > 250*time.Millisecond {
                        errc <- fmt.Errorf("fd.%s on %s %s took %s, expected 0.1s", what, network, addr, dt)
                        return
                }
                errc <- nil
        }()
        select {
        case err := <-errc:
                if err != nil {
                        t.Error(err)
                }
        case <-time.After(1 * time.Second):
                t.Errorf("%s on %s %s took over 1 second, expected 0.1s", what, network, addr)
        }
}

func TestTimeoutUDP(t *testing.T) {
        if runtime.GOOS == "plan9" {
                return
        }
        testTimeout(t, "udp", "127.0.0.1:53", false)
        testTimeout(t, "udp", "127.0.0.1:53", true)
}

func TestTimeoutTCP(t *testing.T) {
        if runtime.GOOS == "plan9" {
                return
        }
        // set up a listener that won't talk back
        listening := make(chan string)
        done := make(chan int)
        go runServe(t, "tcp", "127.0.0.1:0", listening, done)
        addr := <-listening

        testTimeout(t, "tcp", addr, false)
        <-done
}

func TestDeadlineReset(t *testing.T) {
        if runtime.GOOS == "plan9" {
                return
        }
        ln, err := Listen("tcp", "127.0.0.1:0")
        if err != nil {
                t.Fatal(err)
        }
        defer ln.Close()
        tl := ln.(*TCPListener)
        tl.SetDeadline(time.Now().Add(1 * time.Minute))
        tl.SetDeadline(time.Time{}) // reset it
        errc := make(chan error, 1)
        go func() {
                _, err := ln.Accept()
                errc <- err
        }()
        select {
        case <-time.After(50 * time.Millisecond):
                // Pass.
        case err := <-errc:
                // Accept should never return; we never
                // connected to it.
                t.Errorf("unexpected return from Accept; err=%v", err)
        }
}