#include <sys/socket.h> // for socket(), bind(), listen(), accept()
#include <netinet/in.h> // for PF_INET, SOCK_STREAM, IPPROTO_TCP
#include <stdio.h>  // for printf(), perror()
#include <unistd.h> // for read(), write(), close()
#include <string.h> // for bzero()

#define DEMO_PORT 9738

int main( void )
{
    //-----------------------------------------
    // create an unnamed socket for the server
    //-----------------------------------------
    int sock = socket( PF_INET, SOCK_STREAM, IPPROTO_TCP );
    if ( sock < 0 )
    {
        perror( "opening stream socket" );
        return  -1;
    }
    printf( "\nsock=%d \n", sock );

    //----------------------------------------
    // construct a name for the server socket
    //----------------------------------------
    struct sockaddr_in  self;
    socklen_t       nlen = sizeof self;
    bzero( &self, sizeof self );
    self.sin_family = AF_INET;
    self.sin_port = htons( DEMO_PORT );
    self.sin_addr.s_addr = htonl( INADDR_ANY );
    if ( bind( sock, (sockaddr *)&self, nlen ) < 0 )
    {
        perror( "bind failed" );
        return  -1;
    }
    printf( "bind succeeded port: %d\n",DEMO_PORT);

    //---------------------------------------------------------
    // now create a connection queue and wait for some clients
    //---------------------------------------------------------
    if ( listen( sock, 5 ) < 0 )
    {
        perror( "listen failed" );
        return  -1;
    }
    printf( "listen succeeded \n" );


    //---------------------------------------------------
    // main loop to process clients' connection-requests
    //---------------------------------------------------
    while ( 1 )
    {
        sockaddr_in peer;
        socklen_t   plen = sizeof peer;
        bzero( &peer, plen );

        printf( "server waiting \n" );

        int client = accept( sock, (sockaddr *)&peer, &plen );
        if ( client < 0 ) { perror( "accept" ); break; }

        //---------------------------------------------
        // we can now read from or write to the client
        //---------------------------------------------
        char    ch;
        int index = 0;
        char get[1024];
        const char str[] = "/";

        if ( read( client, &ch, 1 ) < 0 )
        {
            perror( "read" );

            get[index] = ch;
            index++;

            int compareResult = strncmp(str, &ch, 5);

            if(compareResult == 0){
                index = 0;
                close( client );
                printf( "server responded, connection closed" );
                break;
            }
        }

        //if ( write( client, &ch, 1 ) < 0 ) { perror( "write" ); break; }

        printf( "got stuff" );

    }

    close( sock );
    printf( "\n" );
}