接受来自客服端的连接liunx
时间: 2023-08-22 21:05:20 浏览: 31
要接受来自客户端的连接,可以使用Linux下的socket编程。下面是一个简单的示例代码:
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#define PORT 8080
int main(int argc, char const *argv[])
{
int server_fd, new_socket, valread;
struct sockaddr_in address;
int opt = 1;
int addrlen = sizeof(address);
char buffer[1024] = {0};
char *hello = "Hello from server";
// 创建socket文件描述符
if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0)
{
perror("socket failed");
exit(EXIT_FAILURE);
}
// 设置socket选项,允许地址重用
if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt, sizeof(opt)))
{
perror("setsockopt failed");
exit(EXIT_FAILURE);
}
// 绑定socket到指定地址和端口
address.sin_family = AF_INET;
address.sin_addr.s_addr = INADDR_ANY;
address.sin_port = htons(PORT);
if (bind(server_fd, (struct sockaddr *)&address, sizeof(address)) < 0)
{
perror("bind failed");
exit(EXIT_FAILURE);
}
// 监听socket,等待连接
if (listen(server_fd, 3) < 0)
{
perror("listen failed");
exit(EXIT_FAILURE);
}
// 接受客户端连接
if ((new_socket = accept(server_fd, (struct sockaddr *)&address, (socklen_t *)&addrlen)) < 0)
{
perror("accept failed");
exit(EXIT_FAILURE);
}
// 从客户端读取数据
valread = read(new_socket, buffer, 1024);
printf("%s\n", buffer);
// 向客户端发送数据
send(new_socket, hello, strlen(hello), 0);
printf("Hello message sent\n");
return 0;
}
```
这个示例代码创建了一个TCP socket,并绑定到端口8080。然后通过listen函数监听这个socket,等待客户端连接。当有客户端连接时,通过accept函数接受连接,并读取客户端发送的数据,在向客户端发送数据。您可以根据自己的需求修改代码。