libgo/go/net/sock_windows.go

   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.
   4
   5 // Sockets for Windows
   6
   7 package net
   8
   9 import "syscall"
  10
  11 func maxListenerBacklog() int {
  12         // TODO: Implement this
  13         return syscall.SOMAXCONN
  14 }
  15
  16 func listenerSockaddr(s syscall.Handle, f int, la syscall.Sockaddr, toAddr func(syscall.Sockaddr) Addr) (syscall.Sockaddr, error) {
  17         a := toAddr(la)
  18         if a == nil {
  19                 return la, nil
  20         }
  21         switch v := a.(type) {
  22         case *TCPAddr, *UnixAddr:
  23                 err := setDefaultListenerSockopts(s)
  24                 if err != nil {
  25                         return nil, err
  26                 }
  27         case *UDPAddr:
  28                 if v.IP.IsMulticast() {
  29                         err := setDefaultMulticastSockopts(s)
  30                         if err != nil {
  31                                 return nil, err
  32                         }
  33                         switch f {
  34                         case syscall.AF_INET:
  35                                 v.IP = IPv4zero
  36                         case syscall.AF_INET6:
  37                                 v.IP = IPv6unspecified
  38                         }
  39                         return v.sockaddr(f)
  40                 }
  41         }
  42         return la, nil
  43 }
  44
  45 func sysSocket(f, t, p int) (syscall.Handle, error) {
  46         // See ../syscall/exec_unix.go for description of ForkLock.
  47         syscall.ForkLock.RLock()
  48         s, err := syscall.Socket(f, t, p)
  49         if err == nil {
  50                 syscall.CloseOnExec(s)
  51         }
  52         syscall.ForkLock.RUnlock()
  53         return s, err
  54 }