1 files changed, 290 insertions, 0 deletions
diff --git a/vendor/golang.org/x/net/ipv6/dgramopt_posix.go b/vendor/golang.org/x/net/ipv6/dgramopt_posix.go
new file mode 100644
index 000000000..4ea7bc2d6
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/dgramopt_posix.go
@@ -0,0 +1,290 @@
+// Copyright 2013 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 ipv6
+
+import (
+	"net"
+	"syscall"
+
+	"golang.org/x/net/internal/netreflect"
+)
+
+// MulticastHopLimit returns the hop limit field value for outgoing
+// multicast packets.
+func (c *dgramOpt) MulticastHopLimit() (int, error) {
+	if !c.ok() {
+		return 0, syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return 0, err
+	}
+	return getInt(s, &sockOpts[ssoMulticastHopLimit])
+}
+
+// SetMulticastHopLimit sets the hop limit field value for future
+// outgoing multicast packets.
+func (c *dgramOpt) SetMulticastHopLimit(hoplim int) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	return setInt(s, &sockOpts[ssoMulticastHopLimit], hoplim)
+}
+
+// MulticastInterface returns the default interface for multicast
+// packet transmissions.
+func (c *dgramOpt) MulticastInterface() (*net.Interface, error) {
+	if !c.ok() {
+		return nil, syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return nil, err
+	}
+	return getInterface(s, &sockOpts[ssoMulticastInterface])
+}
+
+// SetMulticastInterface sets the default interface for future
+// multicast packet transmissions.
+func (c *dgramOpt) SetMulticastInterface(ifi *net.Interface) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	return setInterface(s, &sockOpts[ssoMulticastInterface], ifi)
+}
+
+// MulticastLoopback reports whether transmitted multicast packets
+// should be copied and send back to the originator.
+func (c *dgramOpt) MulticastLoopback() (bool, error) {
+	if !c.ok() {
+		return false, syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return false, err
+	}
+	on, err := getInt(s, &sockOpts[ssoMulticastLoopback])
+	if err != nil {
+		return false, err
+	}
+	return on == 1, nil
+}
+
+// SetMulticastLoopback sets whether transmitted multicast packets
+// should be copied and send back to the originator.
+func (c *dgramOpt) SetMulticastLoopback(on bool) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	return setInt(s, &sockOpts[ssoMulticastLoopback], boolint(on))
+}
+
+// JoinGroup joins the group address group on the interface ifi.
+// By default all sources that can cast data to group are accepted.
+// It's possible to mute and unmute data transmission from a specific
+// source by using ExcludeSourceSpecificGroup and
+// IncludeSourceSpecificGroup.
+// JoinGroup uses the system assigned multicast interface when ifi is
+// nil, although this is not recommended because the assignment
+// depends on platforms and sometimes it might require routing
+// configuration.
+func (c *dgramOpt) JoinGroup(ifi *net.Interface, group net.Addr) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	grp := netAddrToIP16(group)
+	if grp == nil {
+		return errMissingAddress
+	}
+	return setGroup(s, &sockOpts[ssoJoinGroup], ifi, grp)
+}
+
+// LeaveGroup leaves the group address group on the interface ifi
+// regardless of whether the group is any-source group or
+// source-specific group.
+func (c *dgramOpt) LeaveGroup(ifi *net.Interface, group net.Addr) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	grp := netAddrToIP16(group)
+	if grp == nil {
+		return errMissingAddress
+	}
+	return setGroup(s, &sockOpts[ssoLeaveGroup], ifi, grp)
+}
+
+// JoinSourceSpecificGroup joins the source-specific group comprising
+// group and source on the interface ifi.
+// JoinSourceSpecificGroup uses the system assigned multicast
+// interface when ifi is nil, although this is not recommended because
+// the assignment depends on platforms and sometimes it might require
+// routing configuration.
+func (c *dgramOpt) JoinSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	grp := netAddrToIP16(group)
+	if grp == nil {
+		return errMissingAddress
+	}
+	src := netAddrToIP16(source)
+	if src == nil {
+		return errMissingAddress
+	}
+	return setSourceGroup(s, &sockOpts[ssoJoinSourceGroup], ifi, grp, src)
+}
+
+// LeaveSourceSpecificGroup leaves the source-specific group on the
+// interface ifi.
+func (c *dgramOpt) LeaveSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	grp := netAddrToIP16(group)
+	if grp == nil {
+		return errMissingAddress
+	}
+	src := netAddrToIP16(source)
+	if src == nil {
+		return errMissingAddress
+	}
+	return setSourceGroup(s, &sockOpts[ssoLeaveSourceGroup], ifi, grp, src)
+}
+
+// ExcludeSourceSpecificGroup excludes the source-specific group from
+// the already joined any-source groups by JoinGroup on the interface
+// ifi.
+func (c *dgramOpt) ExcludeSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	grp := netAddrToIP16(group)
+	if grp == nil {
+		return errMissingAddress
+	}
+	src := netAddrToIP16(source)
+	if src == nil {
+		return errMissingAddress
+	}
+	return setSourceGroup(s, &sockOpts[ssoBlockSourceGroup], ifi, grp, src)
+}
+
+// IncludeSourceSpecificGroup includes the excluded source-specific
+// group by ExcludeSourceSpecificGroup again on the interface ifi.
+func (c *dgramOpt) IncludeSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	grp := netAddrToIP16(group)
+	if grp == nil {
+		return errMissingAddress
+	}
+	src := netAddrToIP16(source)
+	if src == nil {
+		return errMissingAddress
+	}
+	return setSourceGroup(s, &sockOpts[ssoUnblockSourceGroup], ifi, grp, src)
+}
+
+// Checksum reports whether the kernel will compute, store or verify a
+// checksum for both incoming and outgoing packets.  If on is true, it
+// returns an offset in bytes into the data of where the checksum
+// field is located.
+func (c *dgramOpt) Checksum() (on bool, offset int, err error) {
+	if !c.ok() {
+		return false, 0, syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return false, 0, err
+	}
+	offset, err = getInt(s, &sockOpts[ssoChecksum])
+	if err != nil {
+		return false, 0, err
+	}
+	if offset < 0 {
+		return false, 0, nil
+	}
+	return true, offset, nil
+}
+
+// SetChecksum enables the kernel checksum processing.  If on is ture,
+// the offset should be an offset in bytes into the data of where the
+// checksum field is located.
+func (c *dgramOpt) SetChecksum(on bool, offset int) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	if !on {
+		offset = -1
+	}
+	return setInt(s, &sockOpts[ssoChecksum], offset)
+}
+
+// ICMPFilter returns an ICMP filter.
+func (c *dgramOpt) ICMPFilter() (*ICMPFilter, error) {
+	if !c.ok() {
+		return nil, syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return nil, err
+	}
+	return getICMPFilter(s, &sockOpts[ssoICMPFilter])
+}
+
+// SetICMPFilter deploys the ICMP filter.
+func (c *dgramOpt) SetICMPFilter(f *ICMPFilter) error {
+	if !c.ok() {
+		return syscall.EINVAL
+	}
+	s, err := netreflect.PacketSocketOf(c.PacketConn)
+	if err != nil {
+		return err
+	}
+	return setICMPFilter(s, &sockOpts[ssoICMPFilter], f)
+}