in netcat.c in readwrite() rr = send (fd, zp, rr, 0); /* one line, or the whole buffer */ + if (strnicmp(zp, "exit\n", 5) == 0) /* UDP after input "exit",break! by chenghao0511 2013-05-14*/ + if(o_udpmode) + break; 修正了UDP连接中，输入exit后，远程端退出但本地不退出情况。