#include "unp.h"## 1 ##src/nonblock/tcpcli03.c## int## 2 ##src/nonblock/tcpcli03.c## main(int argc, char **argv)## 3 ##src/nonblock/tcpcli03.c## {## 4 ##src/nonblock/tcpcli03.c## int sockfd;## 5 ##src/nonblock/tcpcli03.c## struct linger ling;## 6 ##src/nonblock/tcpcli03.c## struct sockaddr_in servaddr;## 7 ##src/nonblock/tcpcli03.c## if (argc != 2)## 8 ##src/nonblock/tcpcli03.c## err_quit("usage: tcpcli ");## 9 ##src/nonblock/tcpcli03.c## sockfd = Socket(AF_INET, SOCK_STREAM, 0);## 10 ##src/nonblock/tcpcli03.c## bzero(&servaddr, sizeof(servaddr));## 11 ##src/nonblock/tcpcli03.c## servaddr.sin_family = AF_INET;## 12 ##src/nonblock/tcpcli03.c## servaddr.sin_port = htons(SERV_PORT);## 13 ##src/nonblock/tcpcli03.c## Inet_pton(AF_INET, argv[1], &servaddr.sin_addr);## 14 ##src/nonblock/tcpcli03.c## Connect(sockfd, (SA *) &servaddr, sizeof(servaddr));## 15 ##src/nonblock/tcpcli03.c## ling.l_onoff = 1; /* cause RST to be sent on close() */## 16 ##src/nonblock/tcpcli03.c## ling.l_linger = 0;## 17 ##src/nonblock/tcpcli03.c## Setsockopt(sockfd, SOL_SOCKET, SO_LINGER, &ling, sizeof(ling));## 18 ##src/nonblock/tcpcli03.c## Close(sockfd);## 19 ##src/nonblock/tcpcli03.c## exit(0);## 20 ##src/nonblock/tcpcli03.c## }## 21 ##src/nonblock/tcpcli03.c##