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authorDimitri Sokolyuk <demon@dim13.org>2018-07-24 14:35:44 +0200
committerDimitri Sokolyuk <demon@dim13.org>2018-07-24 14:35:44 +0200
commit621e49bb465f500cc46d47e39e828cf76d6381d7 (patch)
treee9d6ed54cfae73209f2b0d9a016ef0b64adf45a6 /vendor/golang.org/x/net/ipv4/packet_go1_8.go
parent5b9a4a158b81aa6e94a5a56d0851bea938b87bef (diff)
update vendor
Diffstat (limited to 'vendor/golang.org/x/net/ipv4/packet_go1_8.go')
-rw-r--r--vendor/golang.org/x/net/ipv4/packet_go1_8.go56
1 files changed, 56 insertions, 0 deletions
diff --git a/vendor/golang.org/x/net/ipv4/packet_go1_8.go b/vendor/golang.org/x/net/ipv4/packet_go1_8.go
new file mode 100644
index 0000000..b47d186
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/packet_go1_8.go
@@ -0,0 +1,56 @@
+// Copyright 2012 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 !go1.9
+
+package ipv4
+
+import "net"
+
+func (c *packetHandler) readFrom(b []byte) (h *Header, p []byte, cm *ControlMessage, err error) {
+ c.rawOpt.RLock()
+ oob := NewControlMessage(c.rawOpt.cflags)
+ c.rawOpt.RUnlock()
+ n, nn, _, src, err := c.ReadMsgIP(b, oob)
+ if err != nil {
+ return nil, nil, nil, err
+ }
+ var hs []byte
+ if hs, p, err = slicePacket(b[:n]); err != nil {
+ return nil, nil, nil, err
+ }
+ if h, err = ParseHeader(hs); err != nil {
+ return nil, nil, nil, err
+ }
+ if nn > 0 {
+ cm = new(ControlMessage)
+ if err := cm.Parse(oob[:nn]); err != nil {
+ return nil, nil, nil, err
+ }
+ }
+ if src != nil && cm != nil {
+ cm.Src = src.IP
+ }
+ return
+}
+
+func (c *packetHandler) writeTo(h *Header, p []byte, cm *ControlMessage) error {
+ oob := cm.Marshal()
+ wh, err := h.Marshal()
+ if err != nil {
+ return err
+ }
+ dst := new(net.IPAddr)
+ if cm != nil {
+ if ip := cm.Dst.To4(); ip != nil {
+ dst.IP = ip
+ }
+ }
+ if dst.IP == nil {
+ dst.IP = h.Dst
+ }
+ wh = append(wh, p...)
+ _, _, err = c.WriteMsgIP(wh, oob, dst)
+ return err
+}