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 package net 6 7 import ( 8 "internal/syscall/windows" 9 "os" 10 "syscall" 11 ) 12 13 func maxListenerBacklog() int { 14 // TODO: Implement this 15 // NOTE: Never return a number bigger than 1<<16 - 1. See issue 5030. 16 return syscall.SOMAXCONN 17 } 18 19 func sysSocket(family, sotype, proto int) (syscall.Handle, error) { 20 s, err := wsaSocketFunc(int32(family), int32(sotype), int32(proto), 21 nil, 0, windows.WSA_FLAG_OVERLAPPED|windows.WSA_FLAG_NO_HANDLE_INHERIT) 22 if err == nil { 23 return s, nil 24 } 25 // WSA_FLAG_NO_HANDLE_INHERIT flag is not supported on some 26 // old versions of Windows, see 27 // https://msdn.microsoft.com/en-us/library/windows/desktop/ms742212(v=vs.85).aspx 28 // for details. Just use syscall.Socket, if windows.WSASocket failed. 29 30 // See ../syscall/exec_unix.go for description of ForkLock. 31 syscall.ForkLock.RLock() 32 s, err = socketFunc(family, sotype, proto) 33 if err == nil { 34 syscall.CloseOnExec(s) 35 } 36 syscall.ForkLock.RUnlock() 37 if err != nil { 38 return syscall.InvalidHandle, os.NewSyscallError("socket", err) 39 } 40 return s, nil 41 } 42
