summaryrefslogtreecommitdiff
path: root/vendor/golang.org/x/net/ipv4/payload_cmsg.go
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/golang.org/x/net/ipv4/payload_cmsg.go')
-rw-r--r--vendor/golang.org/x/net/ipv4/payload_cmsg.go33
1 files changed, 33 insertions, 0 deletions
diff --git a/vendor/golang.org/x/net/ipv4/payload_cmsg.go b/vendor/golang.org/x/net/ipv4/payload_cmsg.go
new file mode 100644
index 0000000..204a49f
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/payload_cmsg.go
@@ -0,0 +1,33 @@
+// 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 !js,!nacl,!plan9,!windows
+
+package ipv4
+
+import "net"
+
+// ReadFrom reads a payload of the received IPv4 datagram, from the
+// endpoint c, copying the payload into b. It returns the number of
+// bytes copied into b, the control message cm and the source address
+// src of the received datagram.
+func (c *payloadHandler) ReadFrom(b []byte) (n int, cm *ControlMessage, src net.Addr, err error) {
+ if !c.ok() {
+ return 0, nil, nil, errInvalidConn
+ }
+ return c.readFrom(b)
+}
+
+// WriteTo writes a payload of the IPv4 datagram, to the destination
+// address dst through the endpoint c, copying the payload from b. It
+// returns the number of bytes written. The control message cm allows
+// the datagram path and the outgoing interface to be specified.
+// Currently only Darwin and Linux support this. The cm may be nil if
+// control of the outgoing datagram is not required.
+func (c *payloadHandler) WriteTo(b []byte, cm *ControlMessage, dst net.Addr) (n int, err error) {
+ if !c.ok() {
+ return 0, errInvalidConn
+ }
+ return c.writeTo(b, cm, dst)
+}