第一个socket服务端程序
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winsock2.h>
#include <ws2tcpip.h>
void error_handling(char *message);
int main(int argc, char *argv[]) {
    int serv_sock;
    int clnt_sock;
    struct sockaddr_in serv_addr;
    struct sockaddr_in clnt_addr;
    socklen_t clnt_addr_size;
    char message[] = "Hello, World!";
    if (argc != 2) {
        printf("Usage : %s port\n", argv[0]);
        exit(1);
    }
    serv_sock = socket(PF_INET, SOCK_STREAM, 0);
    if (serv_sock == -1) {
        error_handling("socket() error");
    }
    return 0;
}
void error_handling(char *message) {
    fputs(message, stderr);
    fputc('\n', stderr);
    exit(1);
}原文:https://www.cnblogs.com/tangyouwei/p/9837491.html