tcp_ip_socket_疑问记录

SocketOptions:

/socket.setTcpNoDelay(tcpNoDelay);

/ socket.setSoTimeout(lookAheadTimeout * 1000);

 

/**

     * Utility method that compute packet header checksum.

     */

    protected static final int computeCheckSum(byte[] head) {

        int sum = 0;

        for (int i = 0; i < HEAD_LENGTH - CHECK_LEN; i++) {

            sum ^= (head[i] & 0xff); ///

        }

        return sum;

    }