[国嵌攻略][091][TCP网络程序设计]
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server.c
#include <sys/socket.h> #include <netinet/in.h> #include <strings.h> #include <stdio.h> #define SERVER_PORT 3333 void main(){ //创建标识 int serverfd; serverfd = socket(AF_INET, SOCK_STREAM, 0); //建立TCP连接 //绑定地址 struct sockaddr_in serverAddr; serverAddr.sin_family = AF_INET; //设置协议 serverAddr.sin_port = htons(SERVER_PORT); //设置端口 serverAddr.sin_addr.s_addr = htonl(INADDR_ANY); //设置地址 bzero(serverAddr.sin_zero, 8); //设置为零 bind(serverfd, (struct sockaddr *)&serverAddr, sizeof(struct sockaddr)); //监听端口 listen(serverfd, 1); //等待连接 socklen_t clientAddrLen; struct sockaddr_in clientAddr; int clientfd; clientAddrLen = sizeof(struct sockaddr); clientfd = accept(serverfd, (struct sockaddr *)&clientAddr, &clientAddrLen); //接收数据 char buffer[2048]; recv(clientfd, buffer, sizeof(buffer), 0); //显示数据 char *clientIPAddr; clientIPAddr = (char *)inet_ntoa(clientAddr.sin_addr.s_addr); printf("server recvice from %s:\n%s", clientIPAddr, buffer); //关闭连接 close(clientfd); close(serverfd); }
client.c
#include <sys/socket.h> #include <netinet/in.h> #include <strings.h> #include <stdio.h> #define SERVER_PORT 3333 int main(int argc, char **argv){ //参数检查 if(argc != 2){ printf("Usage:\n\t./client <ip address>\n"); return -1; } //创建标识 int clientfd; clientfd = socket(AF_INET, SOCK_STREAM, 0); //建立TCP连接 //建立连接 struct sockaddr_in serverAddr; serverAddr.sin_family = AF_INET; //设置协议 serverAddr.sin_port = htons(SERVER_PORT); //设置端口 serverAddr.sin_addr.s_addr = inet_addr(argv[1]); //设置地址 bzero(serverAddr.sin_zero, 8); //设置为零 connect(clientfd, (struct sockaddr *)&serverAddr, sizeof(struct sockaddr)); //输入数据 char buffer[2048]; printf("client send to %s:\n", argv[1]); fgets(buffer, sizeof(buffer), stdin); //发送数据 send(clientfd, buffer, sizeof(buffer), 0); //关闭连接 close(clientfd); return 0; }
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