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net: make WriteTo fail when UDPConn is already connected

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Fixes #2773.

R=rsc
CC=golang-dev
https://golang.org/cl/5571056
This commit is contained in:
Mikio Hara 2012-01-27 01:31:42 +09:00
parent 93e547a0c2
commit 974fa75557
5 changed files with 113 additions and 17 deletions
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87
src/pkg/net/udp_test.go Normal file
View file

@ -0,0 +1,87 @@
// 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) {
if runtime.GOOS == "plan9" {
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 be failed")
}
if err != nil && err.(*OpError).Err != ErrWriteToConnected {
t.Fatalf("WriteToUDP should be failed as ErrWriteToConnected: %v", err)
}
_, err = c.(*UDPConn).WriteTo([]byte("Connection-oriented mode socket"), ra)
if err == nil {
t.Fatal("WriteTo should be failed")
}
if err != nil && err.(*OpError).Err != ErrWriteToConnected {
t.Fatalf("WriteTo should be failed 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 be failed")
}
}