int listenfd; if ((listenfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) { ERR_EXIT("socket"); } // 2. 分配套接字地址 struct sockaddr_in servaddr; memset(&servaddr, 0, sizeof servaddr); servaddr.sin_family = AF_INET; servaddr.sin_port = htons(6666); servaddr.sin_a...
int sockfd; if ((sockfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) { ERR_EXIT("socket"); } // 2. 分配套接字地址 struct sockaddr_in servaddr; memset(&servaddr, 0, sizeof(servaddr)); servaddr.sin_family = AF_INET; servaddr.sin_port = htons(6666); // servaddr.sin_...
/* Create a socket and get its file descriptor -- socket(2) */ sockfd = socket(AF_INET, SOCK_STREAM, 0); if (sockfd == -1) { die("Couldn't create a socket"); } /* Prevents those dreaded "Address already in use" errors */ if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, ...
* 成功(未超时)返回已连接套接字,失败返回-1,超时返回-1并且errno = ETIMEDOUT */intaccept_timeout(intfd,structsockaddr_in*addr,unsignedintwait_seconds){intret;socklen_t addrlen=sizeof(structsockaddr_in);if(wait_seconds>0){fd_set accept_fdset;structtimevaltimeout;FD_ZERO(&accept_fdset);FD_...
* 连接SOCKET服务器,如果出错返回-1,否则返回socket处理代码 * server:服务器地址(域名或者IP),serverport:端口 * ***/intconnect_socket(char* server,intserverPort){intsockfd=0;structsockaddr_in addr;structhostent *phost;//向系统注册,通知系统建立一个通信端口//AF_INET表示使用IPv4协议//SOCK_STREAM...
simba@ubuntu:~/Documents/code/linux_programming/UNP/socket$ ./echocli_recv_peek local ip=127.0.0.1 port=54005 可以先查看一下网络状态, simba@ubuntu:~$ netstat -an | greptcp| grep 5188 tcp 0 0 0.0.0.0:5188 0.0.0.0:* LISTEN tcp 0 0 127.0.0.1:54005 127.0.0.1:5188 ESTABLISHED tcp 0 0...
篇幅有限select和poll代码在下面这个链接: select mode in c, socket programming on macOS poll mode in c, socket programming on macOS
//保存Socket信息对象的数组(Socket集合),FD_SETSIZE表示SELECT模型中允许的最大Socket数量(64); LPSOCKET_INFORMATION SocketArray[FD_SETSIZE]; SOCKET ListenSocket; // 监听套接字 SOCKET AcceptSocket; // 与客户端进行通信的套接字 SOCKADDR_IN InternetAddr; // 服务器的地址 WSADATA wsaData; // 用于初...
setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO,5); intret = read(sock, buf,sizeof(buf)); if(ret == -1&& errno == EWOULDBLOCK) errno = ETIMEOUT; ... 即使用setsockopt 函数进行设置,但这种方法可移植性比较差,不是每种系统实现都有这些选项。 三、使用select...
(server_addr.sin_zero),8);intserver_sock_fd=socket(AF_INET,SOCK_STREAM,0);if(server_sock_fd==-1){perror("socket error");return1;}charrecv_msg[BUFFER_SIZE];charinput_msg[BUFFER_SIZE];if(connect(server_sock_fd,(structsockaddr*)&server_addr,sizeof(structsockaddr_in))==0){fd_set ...