#include <sys/types.h>
#include <sys/socket.h>

int bind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen);
		

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

int main()
{
    int sockfd;
    int client_sockfd;
    int client_len;
    int state;
    struct sockaddr_in clientaddr, serveraddr, myaddr;

    if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
    {
        perror("socket error : ");
        exit(0);
    }
    bzero(&serveraddr, sizeof(serveraddr));
    serveraddr.sin_family = AF_INET;
    serveraddr.sin_addr.s_addr = htonl(INADDR_ANY);
    serveraddr.sin_port = htons(12345);


    state = bind(sockfd , (struct sockaddr *)&serveraddr,
            sizeof(serveraddr));
    if (state == -1)
    {
        perror("bind error : ");
        exit(0);
    }
    
    state = listen(sockfd, 5);
    if (state == -1)
    {
        perror("listen error : ");
        exit(0);
    }
    client_len = sizeof(clientaddr);
    client_sockfd = accept(sockfd, (struct sockaddr *)&clientaddr,
                            &client_len);

    getpeername(client_sockfd, (struct sockaddr *)&myaddr, &client_len);

    printf("Port : %d\n", myaddr.sin_port);
    printf("address : %s\n", inet_ntoa(myaddr.sin_addr));

    close(client_sockfd);
    close(sockfd);
    return 1;
}