#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <math.h>
#include <string.h>
#include <fcntl.h>

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


#define BUFSIZE   2048
#define USAGE  "usage: client [hostname] [port] [dir...] \n"
#define PORT 2488

#define massert( _eq, _msg )     \
   if( _eq ) {                   \
      perror( _msg );            \
      exit(-1);                  \
   }


int main( int argc, char* argv[] ) {
   
   int s_sock, i, len, ret = 1;
   struct sockaddr_in saddr;
   char buf[BUFSIZE];
   short port;

   if( argc < 3 ) {
      fprintf( stderr, USAGE );
      exit( -1 );
   }
   if(sscanf( argv[2], "%d", &port) < 0) {
      fputs( USAGE, stderr );
      exit(-1);
   }
   massert( (s_sock = socket( AF_INET, SOCK_STREAM, 0 )) < 0, "socket" );

   memset( &saddr, 0, sizeof( struct sockaddr_in ) );
   saddr.sin_family = AF_INET;
   saddr.sin_port   = htons( port );
   massert( inet_aton( argv[1], &saddr.sin_addr ) < 0, "inet_addr" );

   massert( connect( s_sock, (struct sockaddr*)&saddr, sizeof(saddr)) < 0,
                                                                  "connect");
   ret = 1;
   for( i = 3; i < argc; i ++ ) {
      memset( buf, 0 , BUFSIZE );
      sprintf( buf, "%s", argv[i]);
      massert(write( s_sock, buf, strlen(buf)+1) < 0, "write" );
      while( ret && (len = read( s_sock, buf, BUFSIZE )) > 0 ) {
         if( buf[len-1] ==  '\0') {
            ret = 0;
         }
         write( 1, buf, len );
      }
      ret = 1;
   }
   close( s_sock );
   return 0;
}