pxmlw6n2f/Gazebo_Distributed/gazebo/transport/SubscriptionTransport.cc

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2019-03-28 10:57:49 +08:00
/*
* Copyright (C) 2012 Open Source Robotics Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifdef _WIN32
// Ensure that Winsock2.h is included before Windows.h, which can get
// pulled in by anybody (e.g., Boost).
#include <Winsock2.h>
#endif
#include <boost/bind.hpp>
#include <boost/function.hpp>
#include "gazebo/transport/ConnectionManager.hh"
#include "gazebo/transport/SubscriptionTransport.hh"
using namespace gazebo;
using namespace transport;
extern void dummy_callback_fn(uint32_t);
//////////////////////////////////////////////////
SubscriptionTransport::SubscriptionTransport()
{
}
//////////////////////////////////////////////////
SubscriptionTransport::~SubscriptionTransport()
{
ConnectionManager::Instance()->RemoveConnection(this->connection);
this->connection.reset();
}
//////////////////////////////////////////////////
void SubscriptionTransport::Init(ConnectionPtr _conn, bool _latching)
{
this->connection = _conn;
this->latching = _latching;
}
//////////////////////////////////////////////////
bool SubscriptionTransport::HandleMessage(MessagePtr _newMsg)
{
std::string data;
_newMsg->SerializeToString(&data);
return this->HandleData(data, boost::bind(&dummy_callback_fn, _1), 0);
}
//////////////////////////////////////////////////
bool SubscriptionTransport::HandleData(const std::string &_newdata,
boost::function<void(uint32_t)> _cb, uint32_t _id)
{
bool result = false;
if (this->connection->IsOpen())
{
this->connection->EnqueueMsg(_newdata, _cb, _id);
result = true;
}
else
this->connection.reset();
return result;
}
//////////////////////////////////////////////////
const ConnectionPtr &SubscriptionTransport::GetConnection() const
{
return this->connection;
}
//////////////////////////////////////////////////
/// remote connection
bool SubscriptionTransport::IsLocal() const
{
return false;
}