connection.cpp

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#include "odva_ethernetip/connection.h"

#include <boost/make_shared.hpp>
#include <iostream>

using std::cout;
using std::endl;
using boost::shared_ptr;
using boost::make_shared;

namespace eip {

Connection::Connection(const EIP_CONNECTION_INFO_T& o_to_t, const EIP_CONNECTION_INFO_T& t_to_o)
{
  o_to_t_rpi = o_to_t.rpi;
  t_to_o_rpi = t_to_o.rpi;
  o_to_t_buffer_size = o_to_t.buffer_size;
  t_to_o_buffer_size = t_to_o.buffer_size;
  timeout_tick_size = 6;
  timeout_ticks = 80;
  timeout_multiplyer = 0;
  o_to_t_api = 0;
  t_to_o_api = 0;
  setConnectionPoints(o_to_t.assembly_id, t_to_o.assembly_id);
}

void Connection::setConnectionPoints(EIP_USINT origin, EIP_USINT target)
{
  path_.reset();
  path_.addLogicalClass(0x04);
  path_.addLogicalInstance(1);
  path_.addLogicalConnectionPoint(origin);
  path_.addLogicalConnectionPoint(target);
}

shared_ptr<ForwardOpenRequest> Connection::createForwardOpenRequest()
{
  shared_ptr<ForwardOpenRequest> req = make_shared<ForwardOpenRequest> ();

  req->originator_vendor_id = originator_vendor_id;
  req->originator_sn = originator_sn;
  req->connection_sn = connection_sn;

  req->o_to_t_connection_id = o_to_t_connection_id;
  req->t_to_o_connection_id = t_to_o_connection_id;

  req->timeout_tick_size = timeout_tick_size;
  req->timeout_ticks = timeout_ticks;
  req->timeout_multiplyer = timeout_multiplyer;

  req->o_to_t_rpi = o_to_t_rpi;
  req->t_to_o_rpi = t_to_o_rpi;
  req->conn_type = 1;

  // TODO: need connection size info here
  req->setOriginToTargetParams(o_to_t_buffer_size, false, CONN_PRIORITY_SCHEDULED, CONN_TYPE_P2P, false);
  req->setTargetToOriginParams(t_to_o_buffer_size, true, CONN_PRIORITY_SCHEDULED, CONN_TYPE_P2P, false);

  req->getPath() = path_;
  return req;
}

shared_ptr<ForwardCloseRequest> Connection::createForwardCloseRequest()
{
  shared_ptr<ForwardCloseRequest> req = make_shared<ForwardCloseRequest> ();

  req->originator_vendor_id = originator_vendor_id;
  req->originator_sn = originator_sn;
  req->connection_sn = connection_sn;

  req->timeout_tick_size = timeout_tick_size;
  req->timeout_ticks = timeout_ticks;

  // path is actually to the connection manager, not the path of the assemblies
  // don't really understand why, but the example from Omron does this
  req->getPath() = Path(0x02, 0x01);
  return req;
}

bool Connection::verifyForwardOpenResult(const ForwardOpenSuccess& result)
{
  if (result.connection_sn != connection_sn
    || result.originator_vendor_id != originator_vendor_id
    || result.originator_sn != originator_sn)
  {
    return false;
  }
  if (result.o_to_t_connection_id != o_to_t_connection_id)
  {
    cout << "Replacing our o_to_t connection ID (" << o_to_t_connection_id
      << ") with connection ID provided by target ("
      << result.o_to_t_connection_id << ")" << endl;
    o_to_t_connection_id = result.o_to_t_connection_id;
  }
  if (result.t_to_o_connection_id != t_to_o_connection_id)
  {
    cout << "Replacing our t_to_o connection ID (" << t_to_o_connection_id
      << ") with connection ID provided by target ("
      << result.t_to_o_connection_id << ")" << endl;
    t_to_o_connection_id = result.t_to_o_connection_id;
  }
  o_to_t_api = result.o_to_t_api;
  t_to_o_api = result.t_to_o_api;
  return true;
}

bool Connection::verifyForwardCloseResult(const ForwardCloseSuccess& result)
{
  // printf("Comparing Forward Close Result: Expected vs Actual\n");
  // printf("Vendor ID: 0x%08X vs 0x%08X\n", originator_vendor_id, result.originator_vendor_id);
  // printf("Origin SN: 0x%08X vs 0x%08X\n", originator_sn, result.originator_sn);
  printf("Connection SN: 0x%08X vs 0x%08X\n", connection_sn, result.connection_sn);
  return (result.connection_sn == connection_sn
    && result.originator_vendor_id == originator_vendor_id
    && result.originator_sn == originator_sn);
}

} // namespace eip