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Code Issues Releases Wiki Activity

isIncomingDataPacket should be struct function

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This commit is contained in:
Leonid Bugaev
2013-09-30 09:26:07 +02:00
parent fa684d4645
commit f07586a12e
1 changed files with 3 additions and 3 deletions
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listener/raw_tcp_listener.go
+3 -3
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@@ -83,7 +83,7 @@ func (t *RAWTCPListener) readRAWSocket() {
}
func (t *RAWTCPListener) parsePacket(buf []byte) {
if isIncomingDataPacket(buf, t.port) {
if t.isIncomingDataPacket(buf) {
new_buf := make([]byte, len(buf))
copy(new_buf, buf)
@@ -91,13 +91,13 @@ func (t *RAWTCPListener) parsePacket(buf []byte) {
}
}
func isIncomingDataPacket(buf []byte, port int) bool {
func (t *RAWTCPListener) isIncomingDataPacket(buf []byte) bool {
// To avoid full packet parsing every time, we manually parsing values needed for packet filtering
// http://en.wikipedia.org/wiki/Transmission_Control_Protocol
dest_port := binary.BigEndian.Uint16(buf[2:4])
// Because RAW_SOCKET can't be bound to port, we have to control it by ourself
if int(dest_port) == port {
if int(dest_port) == t.port {
// Check TCPPacket code for more description
flags := binary.BigEndian.Uint16(buf[12:14]) & 0x1FF