linux socket 发送

#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 *message = "Hello, Server!";

    // 创建套接字
    if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
        perror("socket");
        exit(1);
    }

    // 设置服务器地址
    server_addr.sin_family = AF_INET;
    server_addr.sin_port = htons(8080);
    inet_pton(AF_INET, "127.0.0.1", &server_addr.sin_addr);

    // 连接服务器
    if (connect(sockfd, (struct sockaddr *)&server_addr, sizeof(server_addr)) == -1) {
        perror("connect");
        close(sockfd);
        exit(1);
    }

    // 发送数据
    if (send(sockfd, message, strlen(message), 0) == -1) {
        perror("send");
        close(sockfd);
        exit(1);
    }

    printf("Message sent successfully.\n");

    // 关闭套接字
    close(sockfd);
    return 0;
}