Search  

---

C:/temp/src/j2k/Deprecated/UDP.Unix/receiver.cpp

Go to the documentation of this file.

#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iostream.h>

#define MESSAGE 100


int main(int argc , char *argv[])
{
  int MySocket;
  struct sockaddr_in receiver_addr;
  struct sockaddr_in sender_addr;
  unsigned int message_length;
  char *host;
  char *message;
  char buffer[MESSAGE];
  unsigned short receiver_port;
  int received_MessageSize;
  char* buffer2;

  receiver_port= atoi(argv[1]);

  MySocket = socket(AF_INET, SOCK_DGRAM, 0);

  if(MySocket < 0)
    {
      cout<<"socket failed\n";
    }

  cout<<"socket is a success. \n";

  memset(&receiver_addr, 0, sizeof(receiver_addr));
  receiver_addr.sin_family = AF_INET;
  receiver_addr.sin_addr.s_addr = htonl(INADDR_ANY);
  receiver_addr.sin_port = htons(receiver_port);

  if(bind(MySocket , (struct sockaddr *)&receiver_addr 
          , sizeof(receiver_addr)) < 0)

    cout<<"binding has  failed\n";
  cout<<"binding has succeeded\n";

  for(;;)
    {
   message_length = sizeof(sender_addr);
   memset( buffer, 0, sizeof(buffer) );
   if ((received_MessageSize = recvfrom(MySocket , buffer , MESSAGE ,0,
            (struct sockaddr *) &sender_addr, &message_length)) < 0) {
   cout<<"recvfrom() failed\n";
   }

   cout << message_length;
  
   cout<<"message has been received \n";
   cout<<"THE MESSAGE IS : "<< buffer <<endl;


   memset( buffer, 0, sizeof(buffer) );
   buffer2 = "1234567890";   

   memcpy( buffer, buffer2, MESSAGE );

    int i = 0;

    for(; i < 14; i++ ) 
      printf("[%d]%c", buffer[i], buffer2[i] );


    cout << "done" << endl;

   if(sendto(MySocket, buffer, MESSAGE, 0, 
        (struct sockaddr *) &sender_addr , sizeof(sender_addr)) != 
      MESSAGE  )

     cout<<"sendto don't work"<<endl;   
    }

}

---