文件操作 - sockoptip_linux.go
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文件: /usr/share/go-1.23/src/net/sockoptip_linux.go
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// Copyright 2011 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" "syscall" ) func setIPv4MulticastInterface(fd *netFD, ifi *Interface) error { var v int32 if ifi != nil { v = int32(ifi.Index) } mreq := &syscall.IPMreqn{Ifindex: v} err := fd.pfd.SetsockoptIPMreqn(syscall.IPPROTO_IP, syscall.IP_MULTICAST_IF, mreq) runtime.KeepAlive(fd) return wrapSyscallError("setsockopt", err) } func setIPv4MulticastLoopback(fd *netFD, v bool) error { err := fd.pfd.SetsockoptInt(syscall.IPPROTO_IP, syscall.IP_MULTICAST_LOOP, boolint(v)) runtime.KeepAlive(fd) return wrapSyscallError("setsockopt", err) }
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