socket编程代码c++
时间: 2024-08-19 17:02:17 浏览: 36
Socket编程是一种网络通信技术,在C++中通常用于创建客户端和服务器,以便进行数据传输。下面是一个简单的套接字编程示例,展示了如何创建一个TCP服务器:
```cpp
#include <iostream>
#include <string>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
int main() {
int server_socket = socket(AF_INET, SOCK_STREAM, 0);
if (server_socket == -1) {
std::cerr << "Error creating socket" << std::endl;
return 1;
}
sockaddr_in server_addr;
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(8080); // 端口号
inet_pton(AF_INET, "localhost", &server_addr.sin_addr);
bind(server_socket, (struct sockaddr*)&server_addr, sizeof(server_addr));
listen(server_socket, 5); // 监听连接
sockaddr_in client_addr;
socklen_t client_len = sizeof(client_addr);
int client_socket = accept(server_socket, (struct sockaddr*)&client_addr, &client_len);
char buffer[1024];
read(client_socket, buffer, sizeof(buffer)); // 接收客户端消息
std::cout << "Received message: " << buffer << std::endl;
write(client_socket, "Hello from server!", strlen("Hello from server!")); // 发送回复
close(client_socket);
close(server_socket);
return 0;
}
```
在这个例子中,我们首先创建了一个套接字,然后绑定到本地IP和特定端口。接着监听客户端连接并接受新连接。服务器读取客户端的消息,处理后发送回客户端。