Treat int as int32

proxy/shadowsocks_2022/packet.go

@@ -153,7 +153,7 @@ func parsePlainUDPPacket(sessionID, packetID uint64, bodyPlain []byte) (DecodedU
 		return DecodedUDPPacket{}, ErrBadHeaderType
 	}
 	epoch := binary.BigEndian.Uint64(bodyPlain[1:9])
-	diff := int(math.Abs(float64(time.Now().Unix() - int64(epoch))))
+	diff := math.Abs(float64(time.Now().Unix() - int64(epoch)))
 	if diff > 30 {
 		return DecodedUDPPacket{}, ErrBadTimestamp
 	}

proxy/shadowsocks_2022/replay.go

@@ -49,12 +49,12 @@ func (f *SlidingWindow) Add(counter uint64) {
 
 	if counter > f.last {
 		lastBlockIndex := f.last >> swBlockBitLog
-		diff := int(blockIndex - lastBlockIndex)
+		diff := blockIndex - lastBlockIndex
 		if diff > swRingBlocks {
 			diff = swRingBlocks
 		}
 
-		for i := 0; i < diff; i++ {
+		for i := 0; i < int(diff); i++ {
 			lastBlockIndex = (lastBlockIndex + 1) & swBlockMask
 			f.ring[lastBlockIndex] = 0
 		}

proxy/shadowsocks_2022/stream.go

@@ -253,7 +253,7 @@ func ReadClientRequestHeaderWithFixed(reader *StreamReader, fixedChunk []byte) (
 	}
 
 	epoch := binary.BigEndian.Uint64(plainFixed[1:9])
-	diff := int(math.Abs(float64(time.Now().Unix() - int64(epoch))))
+	diff := math.Abs(float64(time.Now().Unix() - int64(epoch)))
 	if diff > 30 {
 		return nil, ErrBadTimestamp
 	}
@@ -430,7 +430,7 @@ func ReadTCPResponse(r io.Reader, method *CipherMethod, psk []byte, clientSalt [
 	}
 
 	serverEpoch := binary.BigEndian.Uint64(decryptedFixed[1:9])
-	diff := int(math.Abs(float64(time.Now().Unix() - int64(serverEpoch))))
+	diff := math.Abs(float64(time.Now().Unix() - int64(serverEpoch)))
 	if diff > 30 {
 		return nil, ErrBadTimestamp
 	}