C语言网络编程实践涉及到使用C语言以及相关库来实现网络通信。
![图片[1]-C语言网络编程实践(TCP套接字编程实例)-不念博客](https://www.bunian.cn/wp-content/uploads/2023/04/image-98.png "C语言网络编程实践(TCP套接字编程实例)")
下面是一个简单的TCP套接字编程实例，展示了一个简单的客户端-服务器模型：
服务器端（server.c）：
#include <arpa/inet.h>#include <netinet/in.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#include <sys/socket.h>#include <unistd.h>int main() {int server_fd, client_fd, addr_len;struct sockaddr_in server_addr, client_addr;char buffer[1024];// 创建套接字if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {perror("socket");exit(1);}// 配置服务器地址server_addr.sin_family = AF_INET;server_addr.sin_port = htons(8080);server_addr.sin_addr.s_addr = INADDR_ANY;memset(&(server_addr.sin_zero), '<pre class="wp-block-zibllblock-enlighter"><code class="gl" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">#include <arpa/inet.h>#include <netinet/in.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#include <sys/socket.h>#include <unistd.h>int main() {int server_fd, client_fd, addr_len;struct sockaddr_in server_addr, client_addr;char buffer[1024];// 创建套接字if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {perror("socket");exit(1);}// 配置服务器地址server_addr.sin_family = AF_INET;server_addr.sin_port = htons(8080);server_addr.sin_addr.s_addr = INADDR_ANY;memset(&(server_addr.sin_zero), '\0', 8);// 绑定地址到套接字if (bind(server_fd, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1) {perror("bind");exit(1);}// 监听客户端连接if (listen(server_fd, 10) == -1) {perror("listen");exit(1);}printf("Server is listening on port 8080...\n");addr_len = sizeof(struct sockaddr_in);// 接受客户端连接if ((client_fd = accept(server_fd, (struct sockaddr *)&client_addr, &addr_len)) == -1) {perror("accept");exit(1);}printf("Server received a connection from %s\n", inet_ntoa(client_addr.sin_addr));// 接收客户端消息recv(client_fd, buffer, sizeof(buffer), 0);printf("Client said: %s\n", buffer);// 向客户端发送消息send(client_fd, "Hello, Client!", 15, 0);// 关闭套接字close(client_fd);close(server_fd);return 0;}</code></pre>', 8);// 绑定地址到套接字if (bind(server_fd, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1) {perror("bind");exit(1);}// 监听客户端连接if (listen(server_fd, 10) == -1) {perror("listen");exit(1);}printf("Server is listening on port 8080...\n");addr_len = sizeof(struct sockaddr_in);// 接受客户端连接if ((client_fd = accept(server_fd, (struct sockaddr *)&client_addr, &addr_len)) == -1) {perror("accept");exit(1);}printf("Server received a connection from %s\n", inet_ntoa(client_addr.sin_addr));// 接收客户端消息recv(client_fd, buffer, sizeof(buffer), 0);printf("Client said: %s\n", buffer);// 向客户端发送消息send(client_fd, "Hello, Client!", 15, 0);// 关闭套接字close(client_fd);close(server_fd);return 0;}#include <arpa/inet.h> #include <netinet/in.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/socket.h> #include <unistd.h> int main() { int server_fd, client_fd, addr_len; struct sockaddr_in server_addr, client_addr; char buffer[1024]; // 创建套接字 if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) { perror("socket"); exit(1); } // 配置服务器地址 server_addr.sin_family = AF_INET; server_addr.sin_port = htons(8080); server_addr.sin_addr.s_addr = INADDR_ANY; memset(&(server_addr.sin_zero), '<pre class="wp-block-zibllblock-enlighter"><code class="gl" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">#include <arpa/inet.h> #include <netinet/in.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/socket.h> #include <unistd.h> int main() { int server_fd, client_fd, addr_len; struct sockaddr_in server_addr, client_addr; char buffer[1024]; // 创建套接字 if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) { perror("socket"); exit(1); } // 配置服务器地址 server_addr.sin_family = AF_INET; server_addr.sin_port = htons(8080); server_addr.sin_addr.s_addr = INADDR_ANY; memset(&(server_addr.sin_zero), '\0', 8); // 绑定地址到套接字 if (bind(server_fd, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1) { perror("bind"); exit(1); } // 监听客户端连接 if (listen(server_fd, 10) == -1) { perror("listen"); exit(1); } printf("Server is listening on port 8080...\n"); addr_len = sizeof(struct sockaddr_in); // 接受客户端连接 if ((client_fd = accept(server_fd, (struct sockaddr *)&client_addr, &addr_len)) == -1) { perror("accept"); exit(1); } printf("Server received a connection from %s\n", inet_ntoa(client_addr.sin_addr)); // 接收客户端消息 recv(client_fd, buffer, sizeof(buffer), 0); printf("Client said: %s\n", buffer); // 向客户端发送消息 send(client_fd, "Hello, Client!", 15, 0); // 关闭套接字 close(client_fd); close(server_fd); return 0; }</code></pre>', 8); // 绑定地址到套接字 if (bind(server_fd, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1) { perror("bind"); exit(1); } // 监听客户端连接 if (listen(server_fd, 10) == -1) { perror("listen"); exit(1); } printf("Server is listening on port 8080...\n"); addr_len = sizeof(struct sockaddr_in); // 接受客户端连接 if ((client_fd = accept(server_fd, (struct sockaddr *)&client_addr, &addr_len)) == -1) { perror("accept"); exit(1); } printf("Server received a connection from %s\n", inet_ntoa(client_addr.sin_addr)); // 接收客户端消息 recv(client_fd, buffer, sizeof(buffer), 0); printf("Client said: %s\n", buffer); // 向客户端发送消息 send(client_fd, "Hello, Client!", 15, 0); // 关闭套接字 close(client_fd); close(server_fd); return 0; }#include <arpa/inet.h> #include <netinet/in.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/socket.h> #include <unistd.h> int main() { int server_fd, client_fd, addr_len; struct sockaddr_in server_addr, client_addr; char buffer[1024]; // 创建套接字 if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) { perror("socket"); exit(1); } // 配置服务器地址 server_addr.sin_family = AF_INET; server_addr.sin_port = htons(8080); server_addr.sin_addr.s_addr = INADDR_ANY; memset(&(server_addr.sin_zero), '', 8); // 绑定地址到套接字 if (bind(server_fd, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1) { perror("bind"); exit(1); } // 监听客户端连接 if (listen(server_fd, 10) == -1) { perror("listen"); exit(1); } printf("Server is listening on port 8080...\n"); addr_len = sizeof(struct sockaddr_in); // 接受客户端连接 if ((client_fd = accept(server_fd, (struct sockaddr *)&client_addr, &addr_len)) == -1) { perror("accept"); exit(1); } printf("Server received a connection from %s\n", inet_ntoa(client_addr.sin_addr)); // 接收客户端消息 recv(client_fd, buffer, sizeof(buffer), 0); printf("Client said: %s\n", buffer); // 向客户端发送消息 send(client_fd, "Hello, Client!", 15, 0); // 关闭套接字 close(client_fd); close(server_fd); return 0; }#include <arpa/inet.h>#include <netinet/in.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#include <sys/socket.h>#include <unistd.h>int main() {int server_fd, client_fd, addr_len;struct sockaddr_in server_addr, client_addr;char buffer[1024];// 创建套接字if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {perror("socket");exit(1);}// 配置服务器地址server_addr.sin_family = AF_INET;server_addr.sin_port = htons(8080);server_addr.sin_addr.s_addr = INADDR_ANY;memset(&(server_addr.sin_zero), '\0', 8);// 绑定地址到套接字if (bind(server_fd, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1) {perror("bind");exit(1);}// 监听客户端连接if (listen(server_fd, 10) == -1) {perror("listen");exit(1);}printf("Server is listening on port 8080...\n");addr_len = sizeof(struct sockaddr_in);// 接受客户端连接if ((client_fd = accept(server_fd, (struct sockaddr *)&client_addr, &addr_len)) == -1) {perror("accept");exit(1);}printf("Server received a connection from %s\n", inet_ntoa(client_addr.sin_addr));// 接收客户端消息recv(client_fd, buffer, sizeof(buffer), 0);printf("Client said: %s\n", buffer);// 向客户端发送消息send(client_fd, "Hello, Client!", 15, 0);// 关闭套接字close(client_fd);close(server_fd);return 0;}#include <arpa/inet.h> #include <netinet/in.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/socket.h> #include <unistd.h> int main() { int server_fd, client_fd, addr_len; struct sockaddr_in server_addr, client_addr; char buffer[1024]; // 创建套接字 if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) { perror("socket"); exit(1); } // 配置服务器地址 server_addr.sin_family = AF_INET; server_addr.sin_port = htons(8080); server_addr.sin_addr.s_addr = INADDR_ANY; memset(&(server_addr.sin_zero), '\0', 8); // 绑定地址到套接字 if (bind(server_fd, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1) { perror("bind"); exit(1); } // 监听客户端连接 if (listen(server_fd, 10) == -1) { perror("listen"); exit(1); } printf("Server is listening on port 8080...\n"); addr_len = sizeof(struct sockaddr_in); // 接受客户端连接 if ((client_fd = accept(server_fd, (struct sockaddr *)&client_addr, &addr_len)) == -1) { perror("accept"); exit(1); } printf("Server received a connection from %s\n", inet_ntoa(client_addr.sin_addr)); // 接收客户端消息 recv(client_fd, buffer, sizeof(buffer), 0); printf("Client said: %s\n", buffer); // 向客户端发送消息 send(client_fd, "Hello, Client!", 15, 0); // 关闭套接字 close(client_fd); close(server_fd); return 0; }#include <arpa/inet.h> #include <netinet/in.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/socket.h> #include <unistd.h> int main() { int server_fd, client_fd, addr_len; struct sockaddr_in server_addr, client_addr; char buffer[1024]; // 创建套接字 if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) { perror("socket"); exit(1); } // 配置服务器地址 server_addr.sin_family = AF_INET; server_addr.sin_port = htons(8080); server_addr.sin_addr.s_addr = INADDR_ANY; memset(&(server_addr.sin_zero), '\0', 8); // 绑定地址到套接字 if (bind(server_fd, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1) { perror("bind"); exit(1); } // 监听客户端连接 if (listen(server_fd, 10) == -1) { perror("listen"); exit(1); } printf("Server is listening on port 8080...\n"); addr_len = sizeof(struct sockaddr_in); // 接受客户端连接 if ((client_fd = accept(server_fd, (struct sockaddr *)&client_addr, &addr_len)) == -1) { perror("accept"); exit(1); } printf("Server received a connection from %s\n", inet_ntoa(client_addr.sin_addr)); // 接收客户端消息 recv(client_fd, buffer, sizeof(buffer), 0); printf("Client said: %s\n", buffer); // 向客户端发送消息 send(client_fd, "Hello, Client!", 15, 0); // 关闭套接字 close(client_fd); close(server_fd); return 0; }
客户端（client.c）：
#include <arpa/inet.h>#include <netinet/in.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#include <sys/socket.h>#include <unistd.h>int main() {int client_fd;struct sockaddr_in server_addr;char buffer[1024];// 创建套接字if ((client_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {perror("socket");exit(1);}// 配置服务器地址server_addr.sin_family = AF_INET;server_addr.sin_port = htons(8080);server_addr.sin_addr.s_addr = inet_addr("127.0.0.1");memset(&(server_addr.sin_zero), '<pre class="wp-block-zibllblock-enlighter"><code class="gl" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">#include <arpa/inet.h>#include <netinet/in.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#include <sys/socket.h>#include <unistd.h>int main() {int client_fd;struct sockaddr_in server_addr;char buffer[1024];// 创建套接字if ((client_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {perror("socket");exit(1);}// 配置服务器地址server_addr.sin_family = AF_INET;server_addr.sin_port = htons(8080);server_addr.sin_addr.s_addr = inet_addr("127.0.0.1");memset(&(server_addr.sin_zero), '\0', 8);// 连接到服务器if (connect(client_fd, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1) {perror("connect");exit(1);}// 向服务器发送消息send(client_fd, "Hello, Server!", 15, 0);// 接收服务器回复recv(client_fd, buffer, sizeof(buffer), 0);</code></pre>', 8);// 连接到服务器if (connect(client_fd, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1) {perror("connect");exit(1);}// 向服务器发送消息send(client_fd, "Hello, Server!", 15, 0);// 接收服务器回复recv(client_fd, buffer, sizeof(buffer), 0);#include <arpa/inet.h> #include <netinet/in.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/socket.h> #include <unistd.h> int main() { int client_fd; struct sockaddr_in server_addr; char buffer[1024]; // 创建套接字 if ((client_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) { perror("socket"); exit(1); } // 配置服务器地址 server_addr.sin_family = AF_INET; server_addr.sin_port = htons(8080); server_addr.sin_addr.s_addr = inet_addr("127.0.0.1"); memset(&(server_addr.sin_zero), '<pre class="wp-block-zibllblock-enlighter"><code class="gl" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">#include <arpa/inet.h> #include <netinet/in.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/socket.h> #include <unistd.h> int main() { int client_fd; struct sockaddr_in server_addr; char buffer[1024]; // 创建套接字 if ((client_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) { perror("socket"); exit(1); } // 配置服务器地址 server_addr.sin_family = AF_INET; server_addr.sin_port = htons(8080); server_addr.sin_addr.s_addr = inet_addr("127.0.0.1"); memset(&(server_addr.sin_zero), '\0', 8); // 连接到服务器 if (connect(client_fd, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1) { perror("connect"); exit(1); } // 向服务器发送消息 send(client_fd, "Hello, Server!", 15, 0); // 接收服务器回复 recv(client_fd, buffer, sizeof(buffer), 0); </code></pre>', 8); // 连接到服务器 if (connect(client_fd, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1) { perror("connect"); exit(1); } // 向服务器发送消息 send(client_fd, "Hello, Server!", 15, 0); // 接收服务器回复 recv(client_fd, buffer, sizeof(buffer), 0);#include <arpa/inet.h> #include <netinet/in.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/socket.h> #include <unistd.h> int main() { int client_fd; struct sockaddr_in server_addr; char buffer[1024]; // 创建套接字 if ((client_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) { perror("socket"); exit(1); } // 配置服务器地址 server_addr.sin_family = AF_INET; server_addr.sin_port = htons(8080); server_addr.sin_addr.s_addr = inet_addr("127.0.0.1"); memset(&(server_addr.sin_zero), '', 8); // 连接到服务器 if (connect(client_fd, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1) { perror("connect"); exit(1); } // 向服务器发送消息 send(client_fd, "Hello, Server!", 15, 0); // 接收服务器回复 recv(client_fd, buffer, sizeof(buffer), 0);#include <arpa/inet.h>#include <netinet/in.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#include <sys/socket.h>#include <unistd.h>int main() {int client_fd;struct sockaddr_in server_addr;char buffer[1024];// 创建套接字if ((client_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {perror("socket");exit(1);}// 配置服务器地址server_addr.sin_family = AF_INET;server_addr.sin_port = htons(8080);server_addr.sin_addr.s_addr = inet_addr("127.0.0.1");memset(&(server_addr.sin_zero), '\0', 8);// 连接到服务器if (connect(client_fd, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1) {perror("connect");exit(1);}// 向服务器发送消息send(client_fd, "Hello, Server!", 15, 0);// 接收服务器回复recv(client_fd, buffer, sizeof(buffer), 0);#include <arpa/inet.h> #include <netinet/in.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/socket.h> #include <unistd.h> int main() { int client_fd; struct sockaddr_in server_addr; char buffer[1024]; // 创建套接字 if ((client_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) { perror("socket"); exit(1); } // 配置服务器地址 server_addr.sin_family = AF_INET; server_addr.sin_port = htons(8080); server_addr.sin_addr.s_addr = inet_addr("127.0.0.1"); memset(&(server_addr.sin_zero), '\0', 8); // 连接到服务器 if (connect(client_fd, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1) { perror("connect"); exit(1); } // 向服务器发送消息 send(client_fd, "Hello, Server!", 15, 0); // 接收服务器回复 recv(client_fd, buffer, sizeof(buffer), 0);#include <arpa/inet.h> #include <netinet/in.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/socket.h> #include <unistd.h> int main() { int client_fd; struct sockaddr_in server_addr; char buffer[1024]; // 创建套接字 if ((client_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) { perror("socket"); exit(1); } // 配置服务器地址 server_addr.sin_family = AF_INET; server_addr.sin_port = htons(8080); server_addr.sin_addr.s_addr = inet_addr("127.0.0.1"); memset(&(server_addr.sin_zero), '\0', 8); // 连接到服务器 if (connect(client_fd, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1) { perror("connect"); exit(1); } // 向服务器发送消息 send(client_fd, "Hello, Server!", 15, 0); // 接收服务器回复 recv(client_fd, buffer, sizeof(buffer), 0);
© 版权声明
本站文章由不念博客原创，未经允许严禁转载！
THE END
