使用c语言与python分别写一个可进行p2p通信的STUN

C语言版本的STUN P2P通信代码示例：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <arpa/inet.h>

#define STUN_SERVER "stunserver.org"
#define STUN_PORT 3478
#define BUF_SIZE 1024

int main() {
    int sockfd;
    struct sockaddr_in server_addr;
    char buffer[BUF_SIZE];

    // 创建套接字
    if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
        perror("socket creation failed");
        exit(EXIT_FAILURE);
    }

    // 设置服务器地址
    memset(&server_addr, 0, sizeof(server_addr));
    server_addr.sin_family = AF_INET;
    server_addr.sin_port = htons(STUN_PORT);
    if (inet_pton(AF_INET, STUN_SERVER, &(server_addr.sin_addr)) <= 0) {
        perror("address conversion failed");
        exit(EXIT_FAILURE);
    }

    // 发送绑定请求
    if (sendto(sockfd, "Binding Request", strlen("Binding Request"), 0, (struct sockaddr*)&server_addr, sizeof(server_addr)) < 0) {
        perror("sending request failed");
        exit(EXIT_FAILURE);
    }

    // 接收响应
    socklen_t addr_len;
    if (recvfrom(sockfd, buffer, BUF_SIZE, 0, (struct sockaddr*)&server_addr, &addr_len) < 0) {
        perror("receiving response failed");
        exit(EXIT_FAILURE);
    }

    // 处理响应数据
    printf("STUN response: %s\n", buffer);

    // 关闭套接字
    close(sockfd);

    return 0;
}

Python版本的STUN P2P通信代码示例：

import socket

STUN_SERVER = 'stunserver.org'
STUN_PORT = 3478
BUF_SIZE = 1024

def main():
    # 创建套接字
    sockfd = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

    # 发送绑定请求
    sockfd.sendto(b'Binding Request', (STUN_SERVER, STUN_PORT))

    # 接收响应
    buffer, server_addr = sockfd.recvfrom(BUF_SIZE)

    # 处理响应数据
    print(f"STUN response: {buffer.decode()}")

    # 关闭套接字
    sockfd.close()

if __name__ == '__main__':
    main()

以上是使用C语言和Python分别编写的STUN P2P通信示例代码。这些代码向指定的STUN服务器发送绑定请求，并接收响应。请注意，这些示例代码只是简单的演示，实际应用中可能需要更多的功能和错误处理。