diff options
author | Dimitri Sokolyuk <demon@dim13.org> | 2018-07-24 14:35:44 +0200 |
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committer | Dimitri Sokolyuk <demon@dim13.org> | 2018-07-24 14:35:44 +0200 |
commit | 621e49bb465f500cc46d47e39e828cf76d6381d7 (patch) | |
tree | e9d6ed54cfae73209f2b0d9a016ef0b64adf45a6 /vendor/golang.org/x/net/ipv4/packet_go1_8.go | |
parent | 5b9a4a158b81aa6e94a5a56d0851bea938b87bef (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.go | 56 |
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 +} |