diff options
Diffstat (limited to 'src/net/sockoptip_posix.go')
-rw-r--r-- | src/net/sockoptip_posix.go | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/net/sockoptip_posix.go b/src/net/sockoptip_posix.go new file mode 100644 index 000000000..c2579be91 --- /dev/null +++ b/src/net/sockoptip_posix.go @@ -0,0 +1,57 @@ +// 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. + +// +build darwin dragonfly freebsd linux netbsd openbsd windows + +package net + +import ( + "os" + "syscall" +) + +func joinIPv4Group(fd *netFD, ifi *Interface, ip IP) error { + mreq := &syscall.IPMreq{Multiaddr: [4]byte{ip[0], ip[1], ip[2], ip[3]}} + if err := setIPv4MreqToInterface(mreq, ifi); err != nil { + return err + } + if err := fd.incref(); err != nil { + return err + } + defer fd.decref() + return os.NewSyscallError("setsockopt", syscall.SetsockoptIPMreq(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_ADD_MEMBERSHIP, mreq)) +} + +func setIPv6MulticastInterface(fd *netFD, ifi *Interface) error { + var v int + if ifi != nil { + v = ifi.Index + } + if err := fd.incref(); err != nil { + return err + } + defer fd.decref() + return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd.sysfd, syscall.IPPROTO_IPV6, syscall.IPV6_MULTICAST_IF, v)) +} + +func setIPv6MulticastLoopback(fd *netFD, v bool) error { + if err := fd.incref(); err != nil { + return err + } + defer fd.decref() + return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd.sysfd, syscall.IPPROTO_IPV6, syscall.IPV6_MULTICAST_LOOP, boolint(v))) +} + +func joinIPv6Group(fd *netFD, ifi *Interface, ip IP) error { + mreq := &syscall.IPv6Mreq{} + copy(mreq.Multiaddr[:], ip) + if ifi != nil { + mreq.Interface = uint32(ifi.Index) + } + if err := fd.incref(); err != nil { + return err + } + defer fd.decref() + return os.NewSyscallError("setsockopt", syscall.SetsockoptIPv6Mreq(fd.sysfd, syscall.IPPROTO_IPV6, syscall.IPV6_JOIN_GROUP, mreq)) +} |