source: orxonox.OLD/branches/network/src/lib/network/network_stream.cc @ 5805

/*
   orxonox - the future of 3D-vertical-scrollers

   Copyright (C) 2004 orx

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

### File Specific:
   main-programmer: claudio
   co-programmer:
*/


/* this is for debug output. It just says, that all calls to PRINT() belong to the DEBUG_MODULE_NETWORK module
   For more information refere to https://www.orxonox.net/cgi-bin/trac.cgi/wiki/DebugOutput
*/
#define DEBUG_MODULE_NETWORK


#include "base_object.h"
#include "network_protocol.h"
#include "network_socket.h"
#include "connection_monitor.h"
#include "synchronizeable.h"
#include "list.h"
#include "debug.h"

/* include your own header */
#include "network_stream.h"

/* probably unnecessary */
using namespace std;


#define PACKAGE_SIZE  256


NetworkStream::NetworkStream()
  : DataStream()
{
  this->init();
  /* initialize the references */
  this->networkSocket = new NetworkSocket();
  this->networkProtocol = new NetworkProtocol();
  this->synchronizeables = NULL;
  this->connectionMonitor = new ConnectionMonitor();
}


NetworkStream::NetworkStream(IPaddress& address, Synchronizeable& sync, NodeType type)
  : DataStream()
{
  this->init();
  this->networkSocket = new NetworkSocket(address);
  this->networkProtocol = new NetworkProtocol();
  this->synchronizeables = &sync;
  this->connectionMonitor = new ConnectionMonitor();
}


NetworkStream::NetworkStream(Synchronizeable& sync, unsigned int port, NodeType type)
  : DataStream()
{
  this->init();
  this->networkSocket = new NetworkSocket();
  this->networkSocket->listen(port);
  this->networkProtocol = new NetworkProtocol();
  this->synchronizeables = &sync;
  this->connectionMonitor = new ConnectionMonitor();
}


void NetworkStream::init()
{
  /* set the class id for the base object */
  this->setClassID(CL_NETWORK_STREAM, "NetworkStream");
}


NetworkStream::~NetworkStream()
{

 networkSocket->disconnectServer();

 if( this->networkSocket)
   delete networkSocket;

 delete connectionMonitor;
 delete networkProtocol;
}

void NetworkStream::processData()
{
  int ret = 0;

  /* DOWNSTREAM */
  printf("\nSynchronizeable: %s\n", this->synchronizeables->getName());
  PRINT(0)("============= DOWNSTREAM:===============\n");
  /* first of all read the synchronizeable's data: */
  ret = this->synchronizeables->readBytes((byte*)downBuffer);

  /* send the received data to connectionMonitor */
  this->connectionMonitor->processPacket((byte*)downBuffer, ret);

  ret = this->networkProtocol->createHeader((byte*)downBuffer, ret, DATA_STREAM_BUFFER_SIZE,
                                            *(this->synchronizeables), 12);

  /* pass the data to the network socket */
  ret = this->networkSocket->writeBytes((byte*)downBuffer, ret);
  /* check if there was an error */
  if( ret == -1) { PRINTF(0)("Error in writing data to the NetworkSocket\n");}



  /* UPSTREAM */
  ret = 0;
  PRINT(0)("============== UPSTREAM:================\n");
  /* first of all read  data from networkSocket*/
  ret = this->networkSocket->readBlock((byte*)upBuffer, 11/* this is very bad: hard coded packet sizes! */);
  /* error checking: data read? */
  if( ret != 11 /*PACKAGE_SIZE + sizeof(Header)*/) { PRINTF(0)("Error while reading data from the NetworkSocket. Skipping further work\n");}
  else
  {
    /* send the received data to connectionMonitor */
    this->connectionMonitor->processPacket((byte*)upBuffer, ret);

    /* extract Header */
    Header header = this->networkProtocol->extractHeader((byte*) upBuffer , ret);

    /* now pass the data to the sync object */
    this->synchronizeables->writeBytes((byte*)upBuffer, header.length);
  }

}