server.c

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

int main(int argc, char* argv[])
{
    struct sockaddr_in sv_addr;
    struct sockaddr_in cl_addr;
    int len = sizeof(struct sockaddr_in);

    int listen_fd;
    int conn_fd;

    // create socket 
    if ( (listen_fd = socket(AF_INET, SOCK_STREAM, 0)) < 0 ) {
        perror("socket");
        exit(EXIT_FAILURE);
    }

    // bind
    memset(&sv_addr, 0, sizeof(sv_addr));
    sv_addr.sin_family      = AF_INET;
    sv_addr.sin_addr.s_addr = INADDR_ANY;
    sv_addr.sin_port        = htons(8983);
    if ( (bind(listen_fd, (struct sockaddr*)&sv_addr, len)) < 0 ) {
        perror("bind");
        exit(EXIT_FAILURE);
    }

    // listen
    if ( (listen(listen_fd, SOMAXCONN)) < 0 ) {
        perror("listen");
        exit(EXIT_FAILURE);
    }

    // accept
    if ( (conn_fd = accept(listen_fd, (struct sockaddr*)&cl_addr, &len)) < 0 ) {
        perror("accept");
        exit(EXIT_FAILURE);
    }

    puts("server will close...");
    close(listen_fd);

    if ( close(conn_fd) < 0 ) {
        perror("close");
        exit(EXIT_FAILURE);
    }

    return 0;
}