实现linux下的基于C语言的一个TCP客户端与服务端通信的测试工具，支持推送指定长度数据的功能（如1MB或10MB），支持慢发送usleep函数的调用，从而验证慢收场景下的数据完整性的代码

好的，下面是一个简单的实现，代码如下：

服务端代码：

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

#define PORT 8888
#define BUFFER_SIZE 1024

int main(int argc, char *argv[])
{
    int server_fd, client_fd;
    ssize_t len;
    struct sockaddr_in server_addr, client_addr;
    socklen_t client_addr_len = sizeof(client_addr);
    char buffer[BUFFER_SIZE];

    // 创建socket
    server_fd = socket(AF_INET, SOCK_STREAM, 0);
    if (server_fd == -1)
    {
        perror("socket");
        exit(EXIT_FAILURE);
    }

    // 设置地址复用
    int opt = 1;
    if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt, sizeof(opt)) == -1)
    {
        perror("setsockopt");
        exit(EXIT_FAILURE);
    }

    // 绑定地址和端口
    memset(&server_addr, 0, sizeof(server_addr));
    server_addr.sin_family = AF_INET;
    server_addr.sin_addr.s_addr = INADDR_ANY;
    server_addr.sin_port = htons(PORT);
    if (bind(server_fd, (const struct sockaddr *)&server_addr, sizeof(server_addr)) == -1)
    {
        perror("bind");
        exit(EXIT_FAILURE);
    }

    // 监听连接请求
    if (listen(server_fd, 5) == -1)
    {
        perror("listen");
        exit(EXIT_FAILURE);
    }

    printf("Waiting for connections...\n");

    // 接受连接请求
    client_fd = accept(server_fd, (struct sockaddr *)&client_addr, &client_addr_len);
    if (client_fd == -1)
    {
        perror("accept");
        exit(EXIT_FAILURE);
    }

    printf("Connection established: %s:%d\n", inet_ntoa(client_addr.sin_addr), ntohs(client_addr.sin_port));

    // 接收数据
    while ((len = recv(client_fd, buffer, BUFFER_SIZE, 0)) > 0)
    {
        fwrite(buffer, sizeof(char), len, stdout);
    }

    if (len == -1)
    {
        perror("recv");
        exit(EXIT_FAILURE);
    }

    // 关闭连接
    close(client_fd);
    close(server_fd);

    return 0;
}

客户端代码：

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

#define SERVER_IP "127.0.0.1"
#define PORT 8888
#define BUFFER_SIZE 1024

int main(int argc, char *argv[])
{
    int client_fd;
    ssize_t len;
    struct sockaddr_in server_addr;
    char buffer[BUFFER_SIZE];

    // 创建socket
    client_fd = socket(AF_INET, SOCK_STREAM, 0);
    if (client_fd == -1)
    {
        perror("socket");
        exit(EXIT_FAILURE);
    }

    // 连接服务器
    memset(&server_addr, 0, sizeof(server_addr));
    server_addr.sin_family = AF_INET;
    server_addr.sin_addr.s_addr = inet_addr(SERVER_IP);
    server_addr.sin_port = htons(PORT);
    if (connect(client_fd, (const struct sockaddr *)&server_addr, sizeof(server_addr)) == -1)
    {
        perror("connect");
        exit(EXIT_FAILURE);
    }

    printf("Connected to server: %s:%d\n", SERVER_IP, PORT);

    // 发送数据
    int i;
    for (i = 0; i < 10; i++)
    {
        memset(buffer, 'a', BUFFER_SIZE);
        usleep(1000000); // 每次发送前暂停1秒，模拟慢发送场景
        len = send(client_fd, buffer, BUFFER_SIZE, 0);
        if (len == -1)
        {
            perror("send");
            exit(EXIT_FAILURE);
        }
        printf("Sent %ld bytes of data\n", len);
    }

    // 关闭连接
    close(client_fd);

    return 0;
}

这个示例程序可以向服务器发送10个1MB大小的数据包，每个数据包之间间隔1秒钟。服务端接收到数据后直接输出到标准输出中。你可以根据自己的需要修改程序中的参数来测试不同的场景。