c语言基于udp协议的简易聊天机器人客户端和服务器端代码

以下是基于UDP协议的简易聊天机器人客户端和服务器端的C语言代码。

客户端代码：

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

#define SERVER_IP "127.0.0.1"
#define SERVER_PORT 8080
#define BUFFER_SIZE 1024

int main() {
    // 创建UDP套接字
    int client_socket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
    if (client_socket < 0) {
        perror("socket creation failed");
        exit(EXIT_FAILURE);
    }

    // 设置服务器地址
    struct sockaddr_in server_address;
    memset(&server_address, 0, sizeof(server_address));
    server_address.sin_family = AF_INET;
    server_address.sin_port = htons(SERVER_PORT);
    if (inet_pton(AF_INET, SERVER_IP, &server_address.sin_addr) <= 0) {
        perror("invalid address");
        exit(EXIT_FAILURE);
    }

    // 向服务器发送消息
    char buffer[BUFFER_SIZE];
    while (1) {
        printf("Enter message: ");
        fgets(buffer, BUFFER_SIZE, stdin);
        if (strcmp(buffer, "exit\n") == 0) {
            break;
        }
        sendto(client_socket, buffer, strlen(buffer), 0, (struct sockaddr*)&server_address, sizeof(server_address));

        // 从服务器接收响应
        memset(buffer, 0, BUFFER_SIZE);
        socklen_t server_address_len = sizeof(server_address);
        ssize_t received_bytes = recvfrom(client_socket, buffer, BUFFER_SIZE, 0, (struct sockaddr*)&server_address, &server_address_len);
        if (received_bytes < 0) {
            perror("receive failed");
            exit(EXIT_FAILURE);
        }
        printf("Server response: %s\n", buffer);
    }

    // 关闭套接字并退出
    close(client_socket);
    return 0;
}

服务器端代码：

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

#define SERVER_IP "127.0.0.1"
#define SERVER_PORT 8080
#define BUFFER_SIZE 1024

int main() {
    // 创建UDP套接字
    int server_socket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
    if (server_socket < 0) {
        perror("socket creation failed");
        exit(EXIT_FAILURE);
    }

    // 绑定服务器地址
    struct sockaddr_in server_address;
    memset(&server_address, 0, sizeof(server_address));
    server_address.sin_family = AF_INET;
    server_address.sin_addr.s_addr = htonl(INADDR_ANY);
    server_address.sin_port = htons(SERVER_PORT);
    if (bind(server_socket, (struct sockaddr*)&server_address, sizeof(server_address)) < 0) {
        perror("bind failed");
        exit(EXIT_FAILURE);
    }

    // 接收来自客户端的消息并回复
    char buffer[BUFFER_SIZE];
    struct sockaddr_in client_address;
    socklen_t client_address_len = sizeof(client_address);
    while (1) {
        memset(buffer, 0, BUFFER_SIZE);
        ssize_t received_bytes = recvfrom(server_socket, buffer, BUFFER_SIZE, 0, (struct sockaddr*)&client_address, &client_address_len);
        if (received_bytes < 0) {
            perror("receive failed");
            exit(EXIT_FAILURE);
        }
        printf("Client message: %s", buffer);

        // 向客户端发送响应
        char* response = "Hello, I am a chatbot!";
        sendto(server_socket, response, strlen(response), 0, (struct sockaddr*)&client_address, client_address_len);
    }

    // 关闭套接字并退出
    close(server_socket);
    return 0;
}

请注意，本代码仅作为示例，未进行异常处理和数据验证。在实际应用中，需要根据需求进行相应的改进。