C语言网络编程：云计算和分布式部署实践

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

int main() {
    int sockfd;
    struct sockaddr_in server_addr;
    char buffer[1024];

    // 创建服务器套接字
    sockfd = socket(AF_INET, SOCK_STREAM, 0);
    if (sockfd == -1) {
        perror("socket");
        return EXIT_FAILURE;
    }

    // 初始化服务器地址
    server_addr.sin_family = AF_INET;
    server_addr.sin_port = htons(8080);
    server_addr.sin_addr.s_addr = INADDR_ANY;

    // 绑定套接字到服务器地址
    if (bind(sockfd, (struct sockaddr*)&server_addr, sizeof(server_addr)) == -1) {
        perror("bind");
        return EXIT_FAILURE;
    }

    // 开始监听客户端连接
    if (listen(sockfd, 5) == -1) {
        perror("listen");
        return EXIT_FAILURE;
    }

    // 接受客户端连接并处理请求
    while (1) {
        int client_sockfd;
        struct sockaddr_in client_addr;
        socklen_t client_addr_len = sizeof(client_addr);

        // 接受客户端连接
        client_sockfd = accept(sockfd, (struct sockaddr*)&client_addr, &client_addr_len);
        if (client_sockfd == -1) {
            perror("accept");
            continue;
        }

        // 接收客户端请求
        memset(buffer, 0, sizeof(buffer));
        if (recv(client_sockfd, buffer, sizeof(buffer), 0) == -1) {
            perror("recv");
            close(client_sockfd);
            continue;
        }

        // 处理客户端请求
        if (strcmp(buffer, "GET / HTTP/1.1") == 0) {
            // 发送HTTP响应
            char response[] = "HTTP/1.1 200 OK\n"
                            "Content-Length: 11\n"
                            "Content-Type: text/plain\n\n"
                            "Hello world!";
            if (send(client_sockfd, response, strlen(response), 0) == -1) {
                perror("send");
            }
        }

        // 关闭客户端连接
        close(client_sockfd);
    }

    // 关闭服务器套接字
    close(sockfd);
    return EXIT_SUCCESS;
}

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

typedef struct client {
    int sockfd;
    struct sockaddr_in addr;
} client_t;

// 客户端线程函数
void* client_thread(void* arg) {
    client_t* client = (client_t*)arg;
    char buffer[1024];

    while (1) {
        // 接收客户端消息
        memset(buffer, 0, sizeof(buffer));
        if (recv(client->sockfd, buffer, sizeof(buffer), 0) == -1) {
            perror("recv");
            break;
        }

        // 广播消息到所有其他客户端
        for (int i = 0; i < client_count; i++) {
            if (client_list[i].sockfd != client->sockfd) {
                if (send(client_list[i].sockfd, buffer, strlen(buffer), 0) == -1) {
                    perror("send");
                }
            }
        }
    }

    // 关闭客户端连接
    close(client->sockfd);
    return NULL;
}

int main() {