github.com/graybobo/golang.org-package-offline-cache@v0.0.0-20200626051047-6608995c132f/x/net/ipv6/sockopt_asmreq_windows.go (about) 1 // Copyright 2013 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 ipv6 6 7 import ( 8 "net" 9 "os" 10 "syscall" 11 "unsafe" 12 ) 13 14 func setsockoptIPMreq(fd syscall.Handle, opt *sockOpt, ifi *net.Interface, grp net.IP) error { 15 var mreq sysIPv6Mreq 16 copy(mreq.Multiaddr[:], grp) 17 if ifi != nil { 18 mreq.setIfindex(ifi.Index) 19 } 20 return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, int32(opt.level), int32(opt.name), (*byte)(unsafe.Pointer(&mreq)), sysSizeofIPv6Mreq)) 21 }