帮我写一个tcp服务器接受发送的c语言程序
时间: 2024-09-28 09:17:43 浏览: 24
当然可以,以下是使用C语言编写的一个简单的TCP服务器程序示例,它会监听特定端口并处理客户端连接请求:
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>
#define PORT 8080 // 指定监听的端口号
int main() {
int server_fd, new_socket, client_fd;
struct sockaddr_in server_addr, client_addr;
socklen_t addr_len = sizeof(struct sockaddr_in);
char buffer[1024] = {0};
const char* message = "Hello from server!\n";
// 创建套接字
if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
perror("socket failed");
exit(EXIT_FAILURE);
}
// 配置服务器地址信息
memset(&server_addr, 0, sizeof(server_addr));
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = INADDR_ANY; // 任意地址
server_addr.sin_port = htons(PORT);
// 绑定套接字到指定地址
if (bind(server_fd, (struct sockaddr *)&server_addr, sizeof(server_addr)) == -1) {
perror("bind failed");
exit(EXIT_FAILURE);
}
// 开始监听
if (listen(server_fd, 3) == -1) {
perror("listen failed");
exit(EXIT_FAILURE);
}
printf("Server listening on port %d...\n", PORT);
while (1) {
// 接受新连接
if ((new_socket = accept(server_fd, (struct sockaddr *)&client_addr, &addr_len)) == -1) {
perror("accept failed");
continue;
}
// 读取客户端消息并回复
printf("Accepted connection from %s\n", inet_ntoa(client_addr.sin_addr));
read(new_socket, buffer, sizeof(buffer));
printf("Client said: %s\n", buffer);
send(new_socket, message, strlen(message), 0);
close(new_socket);
}
return 0;
}
```
运行这个程序后,服务器会在指定端口上监听连接。当有客户端连接时,它会接收数据、响应固定的字符串,并关闭连接。