基于linu的聊天室系统代码

好的，这里提供一个基于 Linux 的简单聊天室系统代码示例，供您参考：

### 服务器端代码

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

#define MAX_CLIENTS 10
#define BUFFER_SIZE 1024

int client_sockets[MAX_CLIENTS] = {0};
int num_clients = 0;
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;

void *handle_client(void *arg) {
    int client_socket = *(int *)arg;
    char buffer[BUFFER_SIZE] = {0};
    int read_size = 0;

    while ((read_size = recv(client_socket, buffer, BUFFER_SIZE, 0)) > 0) {
        pthread_mutex_lock(&mutex);
        for (int i = 0; i < num_clients; i++) {
            if (client_sockets[i] != client_socket) {
                send(client_sockets[i], buffer, read_size, 0);
            }
        }
        pthread_mutex_unlock(&mutex);
        memset(buffer, 0, BUFFER_SIZE);
    }

    pthread_mutex_lock(&mutex);
    for (int i = 0; i < num_clients; i++) {
        if (client_sockets[i] == client_socket) {
            client_sockets[i] = 0;
            num_clients--;
            break;
        }
    }
    pthread_mutex_unlock(&mutex);
    close(client_socket);
    pthread_exit(NULL);
}

int main(int argc, char *argv[]) {
    int server_socket = 0;
    int port = 8888;
    struct sockaddr_in server_addr;
    pthread_t thread_id;

    // 创建服务器 socket
    if ((server_socket = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
        perror("socket");
        exit(1);
    }

    // 设置服务器地址和端口
    server_addr.sin_family = AF_INET;
    server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
    server_addr.sin_port = htons(port);

    // 绑定服务器地址和端口
    if (bind(server_socket, (struct sockaddr *)&server_addr, sizeof(server_addr)) < 0) {
        perror("bind");
        exit(1);
    }

    // 监听客户端连接请求
    if (listen(server_socket, MAX_CLIENTS) < 0) {
        perror("listen");
        exit(1);
    }

    // 接收客户端连接请求并处理
    while (1) {
        int client_socket = 0;
        struct sockaddr_in client_addr;
        socklen_t client_addr_len = sizeof(client_addr);

        if ((client_socket = accept(server_socket, (struct sockaddr *)&client_addr, &client_addr_len)) < 0) {
            perror("accept");
            exit(1);
        }

        if (num_clients >= MAX_CLIENTS) {
            printf("Maximum clients reached. Connection rejected.\n");
            close(client_socket);
            continue;
        }

        client_sockets[num_clients] = client_socket;
        num_clients++;

        pthread_create(&thread_id, NULL, handle_client, (void *)&client_socket);
    }

    close(server_socket);
    return 0;
}

### 客户端代码

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

#define BUFFER_SIZE 1024

int client_socket = 0;

void *handle_recv(void *arg) {
    char buffer[BUFFER_SIZE] = {0};
    int read_size = 0;

    while ((read_size = recv(client_socket, buffer, BUFFER_SIZE, 0)) > 0) {
        printf("%s", buffer);
        memset(buffer, 0, BUFFER_SIZE);
    }

    close(client_socket);
    pthread_exit(NULL);
}

int main(int argc, char *argv[]) {
    char *server_ip = "127.0.0.1";
    int server_port = 8888;
    struct sockaddr_in server_addr;
    pthread_t thread_id;

    // 创建客户端 socket
    if ((client_socket = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
        perror("socket");
        exit(1);
    }

    // 设置服务器地址和端口
    server_addr.sin_family = AF_INET;
    server_addr.sin_addr.s_addr = inet_addr(server_ip);
    server_addr.sin_port = htons(server_port);

    // 连接服务器
    if (connect(client_socket, (struct sockaddr *)&server_addr, sizeof(server_addr)) < 0) {
        perror("connect");
        exit(1);
    }

    // 创建接收线程
    pthread_create(&thread_id, NULL, handle_recv, NULL);

    // 发送消息
    char buffer[BUFFER_SIZE] = {0};
    int read_size = 0;
    while ((read_size = read(STDIN_FILENO, buffer, BUFFER_SIZE)) > 0) {
        send(client_socket, buffer, read_size, 0);
        memset(buffer, 0, BUFFER_SIZE);
    }

    close(client_socket);
    return 0;
}

以上示例代码仅供参考，实际使用时需要根据实际情况进行调整和优化。同时，需要注意数据传输的安全性问题，例如使用 SSL/TLS 等加密协议来保护数据传输的安全性。