c语言TCP/IP 服务器的代码
时间: 2023-02-20 18:25:53 浏览: 54
下面是一个简单的 C 语言 TCP/IP 服务器代码示例:
```
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#define PORT 9000
int main()
{
// 创建套接字
int sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock == -1)
{
printf("创建套接字失败!\n");
return -1;
}
// 绑定套接字
struct sockaddr_in addr;
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = htonl(INADDR_ANY);
addr.sin_port = htons(PORT);
int res = bind(sock, (struct sockaddr*)&addr, sizeof(addr));
if (res == -1)
{
printf("绑定套接字失败!\n");
return -1;
}
// 监听
res = listen(sock, 5);
if (res == -1)
{
printf("监听失败!\n");
return -1;
}
// 接受连接
struct sockaddr_in client_addr;
socklen_t client_addr_size = sizeof(client_addr);
int client_sock = accept(sock, (struct sockaddr*)&client_addr, &client_addr_size);
if (client_sock == -1)
{
printf("接受连接失败!\n");
return -1;
}
// 接收数据
char buffer[1024];
int received_size = recv(client_sock, buffer, sizeof(buffer), 0);
if (received_size == -1)
{
printf("接收数据失败!\n");
return -1;
}
// 打印数据
printf("接收到的数据:%s\n", buffer);
// 关闭套接字
close(client_sock);
close(sock);
return 0;
}
```
该代码实现了一个简单的 TCP/IP 服务器,它会创建一个套接字,绑定