Fix bug handling UDP OTA.

lixin9311 · lixin9311 · commit 0e4e35a50899 · 2017-01-22T05:31:42.000+09:00
diff --git a/shadowsocks/udp.go b/shadowsocks/udp.go
@@ -92,6 +92,7 @@ func (c *SecurePacketConn) WriteTo(b []byte, dst net.Addr) (n int, err error) {
 	packetLen := len(b) + len(iv)
 
 	if c.ota {
+		b[idType] |= OneTimeAuthMask
 		packetLen += lenHmacSha1
 		key := cipher.key
 		actualHmacSha1Buf := HmacSha1(append(iv, key...), b)
diff --git a/shadowsocks/udprelay.go b/shadowsocks/udprelay.go
@@ -168,6 +168,7 @@ func handleUDPConnection(handle *SecurePacketConn, n int, src net.Addr, receive
 	if addrType&OneTimeAuthMask > 0 {
 		ota = true
 	}
+	receive[idType] &= ^OneTimeAuthMask
 	compatiblemode := !handle.IsOta() && ota
 
 	switch addrType & AddrMask {

Original file line number	Diff line number	Diff line change
`@@ -168,6 +168,7 @@ func handleUDPConnection(handle *SecurePacketConn, n int, src net.Addr, receive`
`168`	`168`	`if addrType&OneTimeAuthMask > 0 {`
`169`	`169`	`ota = true`
`170`	`170`	`}`
	`171`	`+ receive[idType] &= ^OneTimeAuthMask`
`171`	`172`	`compatiblemode := !handle.IsOta() && ota`
`172`	`173`
`173`	`174`	`switch addrType & AddrMask {`