mirror of
https://github.com/golang/go
synced 2024-10-05 15:51:22 -06:00
743c2d0f48
R=rsc, bradfitz CC=golang-dev https://golang.org/cl/5536068
38 lines
1.0 KiB
Go
38 lines
1.0 KiB
Go
// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Socket options for Linux
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package net
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import (
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"syscall"
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)
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func setDefaultSockopts(s, f, t int) {
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switch f {
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case syscall.AF_INET6:
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// Allow both IP versions even if the OS default is otherwise.
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syscall.SetsockoptInt(s, syscall.IPPROTO_IPV6, syscall.IPV6_V6ONLY, 0)
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}
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if f == syscall.AF_UNIX ||
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(f == syscall.AF_INET || f == syscall.AF_INET6) && t == syscall.SOCK_STREAM {
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// Allow reuse of recently-used addresses.
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syscall.SetsockoptInt(s, syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1)
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}
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// Allow broadcast.
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syscall.SetsockoptInt(s, syscall.SOL_SOCKET, syscall.SO_BROADCAST, 1)
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}
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func setDefaultMulticastSockopts(fd *netFD) {
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fd.incref()
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defer fd.decref()
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// Allow multicast UDP and raw IP datagram sockets to listen
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// concurrently across multiple listeners.
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syscall.SetsockoptInt(fd.sysfd, syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1)
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}
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