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// 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 (
"os"
"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()
t0 := time.Nanoseconds()
fd.SetReadTimeout(1e8) // 100ms
var b [100]byte
var n int
var err1 os.Error
if readFrom {
n, _, err1 = fd.(PacketConn).ReadFrom(b[0:])
} else {
n, err1 = fd.Read(b[0:])
}
t1 := time.Nanoseconds()
what := "Read"
if readFrom {
what = "ReadFrom"
}
if n != 0 || err1 == nil || !err1.(Error).Timeout() {
t.Errorf("fd.%s on %s %s did not return 0, timeout: %v, %v", what, network, addr, n, err1)
}
if t1-t0 < 0.5e8 || t1-t0 > 1.5e8 {
t.Errorf("fd.%s on %s %s took %f seconds, expected 0.1", what, network, addr, float64(t1-t0)/1e9)
}
}
func TestTimeoutUDP(t *testing.T) {
testTimeout(t, "udp", "127.0.0.1:53", false)
testTimeout(t, "udp", "127.0.0.1:53", true)
}
func TestTimeoutTCP(t *testing.T) {
// 74.125.19.99 is www.google.com.
// could use dns, but dns depends on
// timeouts and this is the timeout test.
testTimeout(t, "tcp", "74.125.19.99:80", false)
}
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