ah~~you are right~
in client,iris use constant 14400 as port
unsigned long uIP = strtoul( cmdline, NULL, 10 );
unsigned long reverseIP = ntohl( uIP );
unsigned long reversePort = htonl( 14400 );
char* loginIP = NULL;
in_addr addr;
reverseIP ^= reversePort;
addr.s_addr = reverseIP;
loginIP =...