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// Copyright 2012 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 (
"runtime"
"testing"
)
func TestWriteToUDP(t *testing.T) {
switch runtime.GOOS {
case "plan9":
t.Logf("skipping test on %q", runtime.GOOS)
return
}
l, err := ListenPacket("udp", "127.0.0.1:0")
if err != nil {
t.Fatalf("Listen failed: %v", err)
}
defer l.Close()
testWriteToConn(t, l.LocalAddr().String())
testWriteToPacketConn(t, l.LocalAddr().String())
}
func testWriteToConn(t *testing.T, raddr string) {
c, err := Dial("udp", raddr)
if err != nil {
t.Fatalf("Dial failed: %v", err)
}
defer c.Close()
ra, err := ResolveUDPAddr("udp", raddr)
if err != nil {
t.Fatalf("ResolveUDPAddr failed: %v", err)
}
_, err = c.(*UDPConn).WriteToUDP([]byte("Connection-oriented mode socket"), ra)
if err == nil {
t.Fatal("WriteToUDP should fail")
}
if err != nil && err.(*OpError).Err != ErrWriteToConnected {
t.Fatalf("WriteToUDP should fail as ErrWriteToConnected: %v", err)
}
_, err = c.(*UDPConn).WriteTo([]byte("Connection-oriented mode socket"), ra)
if err == nil {
t.Fatal("WriteTo should fail")
}
if err != nil && err.(*OpError).Err != ErrWriteToConnected {
t.Fatalf("WriteTo should fail as ErrWriteToConnected: %v", err)
}
_, err = c.Write([]byte("Connection-oriented mode socket"))
if err != nil {
t.Fatalf("Write failed: %v", err)
}
}
func testWriteToPacketConn(t *testing.T, raddr string) {
c, err := ListenPacket("udp", "127.0.0.1:0")
if err != nil {
t.Fatalf("ListenPacket failed: %v", err)
}
defer c.Close()
ra, err := ResolveUDPAddr("udp", raddr)
if err != nil {
t.Fatalf("ResolveUDPAddr failed: %v", err)
}
_, err = c.(*UDPConn).WriteToUDP([]byte("Connection-less mode socket"), ra)
if err != nil {
t.Fatalf("WriteToUDP failed: %v", err)
}
_, err = c.WriteTo([]byte("Connection-less mode socket"), ra)
if err != nil {
t.Fatalf("WriteTo failed: %v", err)
}
_, err = c.(*UDPConn).Write([]byte("Connection-less mode socket"))
if err == nil {
t.Fatal("Write should fail")
}
}
var udpConnLocalNameTests = []struct {
net string
laddr *UDPAddr
}{
{"udp4", &UDPAddr{IP: IPv4(127, 0, 0, 1)}},
{"udp4", &UDPAddr{}},
{"udp4", nil},
}
func TestUDPConnLocalName(t *testing.T) {
if testing.Short() || !*testExternal {
t.Logf("skipping test to avoid external network")
return
}
for _, tt := range udpConnLocalNameTests {
c, err := ListenUDP(tt.net, tt.laddr)
if err != nil {
t.Errorf("ListenUDP failed: %v", err)
return
}
defer c.Close()
la := c.LocalAddr()
if a, ok := la.(*UDPAddr); !ok || a.Port == 0 {
t.Errorf("got %v; expected a proper address with non-zero port number", la)
return
}
}
}
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