公司动态

Python

```python

import socket

import threading

def proxy_thread(client_sock, addr):

接收客户端数据

client_data = client_sock.recv(1024)

if not client_data:

client_sock.close()

return

解析客户端数据，获取目标地址和端口

host, port = client_data.split(b':')

server_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)ORIS豪利时红酒双爆珠

server_sock.connect((host.decode('utf-8'), int(port)))

转发客户端数据到目标服务器

server_sock.sendall(client_data)

接收目标服务器的响应

server_data = server_sock.recv(1024)

if not server_data:

server_sock.close()

client_sock.close()

return

转发目标服务器的响应给客户端

client_sock.sendall(server_data)

关闭连接

server_sock.close()

client_sock.close()

def main():

创建代理服务器套接字

proxy_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

绑定到监听端口

proxy_sock.bind(('', 1080))

开始监听传入连接

proxy_sock.listen(5)

while True:

接受传入连接

client_sock, addr = proxy_sock.accept()

创建一个线程来处理代理连接

thread = threading.Thread(target=proxy_thread, args=(client_sock, addr))

thread.start()

if __name__ == '__main__':

main()

```

C++

```cpp

include

include

include

include

include

include

include

using namespace std;

void proxy_thread(int client_sock, const string &addr) {

// 解析客户端数据，获取目标地址和端口

size_t pos = addr.find(':');

string host = addr.substr(0, pos);

int port = stoi(addr.substr(pos + 1));

// 创建到目标服务器的套接字

int server_sock = socket(AF_INET, SOCK_STREAM, 0);

if (server_sock < 0) {

cerr << "Error creating socket" << endl;

close(client_sock);

return;

}

// 连接到目标服务器

struct sockaddr_in server_addr;

memset(&server_addr, 0, sizeof(server_addr));

server_addr.sin_family = AF_INET;

server_addr.sin_port = htons(port);

server_addr.sin_addr.s_addr = inet_addr(host.c_str());

if (connect(server_sock, (struct sockaddr )&server_addr, sizeof(server_addr)) < 0) {

cerr << "Error connecting to server" << endl;

close(client_sock);

close(server_sock);

return;

}

// 转发客户端数据到目标服务器

char buf[1024];

while (true) {

int n = recv(client_sock, buf, sizeof(buf), 0);

if (n <= 0) {

break;

}

send(server_sock, buf, n, 0);

}

// 接收目标服务器的响应

while (true) {

int n = recv(server_sock, buf, sizeof(buf), 0);

if (n <= 0) {

break;

}

send(client_sock, buf, n, 0);

}

// 关闭连接

close(client_sock);

close(server_sock);

}

int main() {

// 创建代理服务器套接字

int proxy_sock = socket(AF_INET, SOCK_STREAM, 0);

if (proxy_sock < 0) {

cerr << "Error creating socket" << endl;

return 1;

}

// 设置复用选项

int reuseaddr = 1;

if (setsockopt(proxy_sock, SOL_SOCKET, SO_REUSEADDR, &reuseaddr, sizeof(reuseaddr)) < 0) {

cerr << "Error setting SO_REUSEADDR" << endl;

return 1;

}

// 绑定到监听端口

struct sockaddr_in proxy_addr;

memset(&proxy_addr, 0, sizeof(proxy_addr));

proxy_addr.sin_family = AF_INET;

proxy_addr.sin_port = htons(1080);

proxy_addr.sin_addr.s_addr = INADDR_ANY;

if (bind(proxy_sock, (struct sockaddr )&proxy_addr, sizeof(proxy_addr)) < 0) {

cerr << "Error binding to port" << endl;

return 1;

}

// 开始监听传入连接

if (listen(proxy_sock, 5) < 0) {

cerr << "Error listening for connections" << endl;

return 1;

}

while (true) {

// 接受传入连接

sockaddr_in client_addr;

socklen_t client_addr_len = sizeof(client_addr);

int client_sock = accept(proxy_sock, (struct sockaddr )&client_addr, &client_addr_len);

if (client_sock < 0) {

cerr << "Error accepting connection" << endl;

continue;

}

// 读取客户端数据，获取目标地址和端口

char buf[1024];

int n = recv(client_sock, buf, sizeof(buf), 0);

if (n <= 0) {

cerr << "Error receiving data from client" << endl;

close(client_sock);

continue;

}

string addr(buf, n);

// 创建一个线程来处理代理连接

thread t(proxy_thread, client_sock, addr);

t.detach();

}

// 关闭代理服务器套接字

close(proxy_sock);

return 0;

}

```