1 // Copyright 2009 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
5 // +build darwin freebsd linux openbsd windows
19 func boolint(b bool) int {
26 // Generic socket creation.
27 func socket(net string, f, p, t int, la, ra syscall.Sockaddr, toAddr func(syscall.Sockaddr) Addr) (fd *netFD, err os.Error) {
28 // See ../syscall/exec.go for description of ForkLock.
29 syscall.ForkLock.RLock()
30 s, e := syscall.Socket(f, p, t)
32 syscall.ForkLock.RUnlock()
33 return nil, os.Errno(e)
35 syscall.CloseOnExec(s)
36 syscall.ForkLock.RUnlock()
38 setKernelSpecificSockopt(s, f)
41 e = syscall.Bind(s, la)
44 return nil, os.Errno(e)
48 if fd, err = newFD(s, f, p, net); err != nil {
54 if err = fd.connect(ra); err != nil {
61 sa, _ := syscall.Getsockname(s)
63 sa, _ = syscall.Getpeername(s)
66 fd.setAddr(laddr, raddr)
70 func setsockoptInt(fd *netFD, level, opt int, value int) os.Error {
71 return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd.sysfd, level, opt, value))
74 func setsockoptNsec(fd *netFD, level, opt int, nsec int64) os.Error {
75 var tv = syscall.NsecToTimeval(nsec)
76 return os.NewSyscallError("setsockopt", syscall.SetsockoptTimeval(fd.sysfd, level, opt, &tv))
79 func setReadBuffer(fd *netFD, bytes int) os.Error {
82 return setsockoptInt(fd, syscall.SOL_SOCKET, syscall.SO_RCVBUF, bytes)
85 func setWriteBuffer(fd *netFD, bytes int) os.Error {
88 return setsockoptInt(fd, syscall.SOL_SOCKET, syscall.SO_SNDBUF, bytes)
91 func setReadTimeout(fd *netFD, nsec int64) os.Error {
92 fd.rdeadline_delta = nsec
96 func setWriteTimeout(fd *netFD, nsec int64) os.Error {
97 fd.wdeadline_delta = nsec
101 func setTimeout(fd *netFD, nsec int64) os.Error {
102 if e := setReadTimeout(fd, nsec); e != nil {
105 return setWriteTimeout(fd, nsec)
108 func setReuseAddr(fd *netFD, reuse bool) os.Error {
111 return setsockoptInt(fd, syscall.SOL_SOCKET, syscall.SO_REUSEADDR, boolint(reuse))
114 func bindToDevice(fd *netFD, dev string) os.Error {
115 // TODO(rsc): call setsockopt with null-terminated string pointer
119 func setDontRoute(fd *netFD, dontroute bool) os.Error {
122 return setsockoptInt(fd, syscall.SOL_SOCKET, syscall.SO_DONTROUTE, boolint(dontroute))
125 func setKeepAlive(fd *netFD, keepalive bool) os.Error {
128 return setsockoptInt(fd, syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, boolint(keepalive))
131 func setNoDelay(fd *netFD, noDelay bool) os.Error {
134 return setsockoptInt(fd, syscall.IPPROTO_TCP, syscall.TCP_NODELAY, boolint(noDelay))
137 func setLinger(fd *netFD, sec int) os.Error {
141 l.Linger = int32(sec)
148 e := syscall.SetsockoptLinger(fd.sysfd, syscall.SOL_SOCKET, syscall.SO_LINGER, &l)
149 return os.NewSyscallError("setsockopt", e)
152 type UnknownSocketError struct {
156 func (e *UnknownSocketError) String() string {
157 return "unknown socket address type " + reflect.TypeOf(e.sa).String()
160 type writerOnly struct {
164 // Fallback implementation of io.ReaderFrom's ReadFrom, when sendfile isn't
166 func genericReadFrom(w io.Writer, r io.Reader) (n int64, err os.Error) {
167 // Use wrapper to hide existing r.ReadFrom from io.Copy.
168 return io.Copy(writerOnly{w}, r)