winsock2 在linux

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

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

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

    memset(&server_addr, 0, sizeof(server_addr));

    // 配置服务器地址
    server_addr.sin_family = AF_INET;
    server_addr.sin_port = htons(8080);
    if (inet_pton(AF_INET, "127.0.0.1", &server_addr.sin_addr) <= 0) {
        perror("inet_pton failed");
        exit(EXIT_FAILURE);
    }

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

    // 发送数据
    send(sockfd, "Hello, Server!", strlen("Hello, Server!"), 0);

    // 接收数据
    int bytes_received = recv(sockfd, buffer, sizeof(buffer) - 1, 0);
    if (bytes_received < 0) {
        perror("recv failed");
        exit(EXIT_FAILURE);
    }
    buffer[bytes_received] = '\0';
    printf("Received: %s\n", buffer);

    // 关闭 socket
    close(sockfd);

    return 0;
}