resiprocate/reTurn/AsyncUdpSocketBase.cxx

#include <functional>

#include "AsyncUdpSocketBase.hxx"
#include "AsyncSocketBaseHandler.hxx"
#include <rutil/Logger.hxx>
#include "ReTurnSubsystem.hxx"

#define RESIPROCATE_SUBSYSTEM ReTurnSubsystem::RETURN

using namespace std;

namespace reTurn {

AsyncUdpSocketBase::AsyncUdpSocketBase(asio::io_context& ioService) 
   : AsyncSocketBase(ioService),
     mSocket(ioService),
     mResolver(ioService)
{
}

unsigned int 
AsyncUdpSocketBase::getSocketDescriptor() 
{ 
   return (unsigned int)mSocket.native_handle(); 
}

asio::error_code 
AsyncUdpSocketBase::bind(const asio::ip::address& address, unsigned short port)
{
   asio::error_code errorCode;
   mSocket.open(address.is_v6() ? asio::ip::udp::v6() : asio::ip::udp::v4(), errorCode);
   if(!errorCode)
   {
#ifdef USE_IPV6
#ifdef __linux__
      if(address.is_v6())
      {
         asio::ip::v6_only v6_opt(true);
         mSocket.set_option(v6_opt);
      }
#endif
#endif
      mSocket.set_option(asio::ip::udp::socket::reuse_address(true), errorCode);
      mSocket.set_option(asio::socket_base::receive_buffer_size(66560));
      //mSocket.set_option(asio::socket_base::send_buffer_size(66560));
      mSocket.bind(asio::ip::udp::endpoint(address, port), errorCode);
   }
   return errorCode;
}

void 
AsyncUdpSocketBase::connect(const std::string& address, unsigned short port)
{
   // Start an asynchronous resolve to translate the address
   // into a list of endpoints.
   resip::Data service(port);
   mResolver.async_resolve(mSocket.local_endpoint().protocol(), address, service.c_str(),
        std::bind(&AsyncSocketBase::handleUdpResolve, shared_from_this(),
                    std::placeholders::_1,
                    std::placeholders::_2));
}

void 
AsyncUdpSocketBase::handleUdpResolve(const asio::error_code& ec,
                                     const asio::ip::udp::resolver::results_type& endpoints)
{
   if (!ec && !endpoints.empty())
   {
      // Use the first endpoint in the list.
      // Nothing to do for UDP except store the connected address/port
      asio::ip::udp::resolver::results_type::const_iterator endpoint_iterator = endpoints.begin();
      mConnected = true;
      mConnectedAddress = endpoint_iterator->endpoint().address();
      mConnectedPort = endpoint_iterator->endpoint().port();

      onConnectSuccess();
   }
   else
   {
      onConnectFailure(ec);
   }
}

asio::ip::address 
AsyncUdpSocketBase::getSenderEndpointAddress() 
{ 
   return mSenderEndpoint.address(); 
}

unsigned short 
AsyncUdpSocketBase::getSenderEndpointPort() 
{ 
   return mSenderEndpoint.port(); 
}

void 
AsyncUdpSocketBase::transportSend(const StunTuple& destination, std::vector<asio::const_buffer>& buffers)
{
   //InfoLog(<< "AsyncUdpSocketBase::transportSend " << buffers.size() << " buffer(s) to " << destination << " - buf1 size=" << buffer_size(buffers.front()));
   mSocket.async_send_to(buffers, 
                         asio::ip::udp::endpoint(destination.getAddress(), destination.getPort()), 
                         std::bind(&AsyncUdpSocketBase::handleSend, shared_from_this(), std::placeholders::_1));
}

void 
AsyncUdpSocketBase::transportReceive()
{
   mSocket.async_receive_from(asio::buffer((void*)mReceiveBuffer->data(), RECEIVE_BUFFER_SIZE), mSenderEndpoint,
               std::bind(&AsyncUdpSocketBase::handleReceive, shared_from_this(), std::placeholders::_1, std::placeholders::_2));
}

void 
AsyncUdpSocketBase::transportFramedReceive()
{
   // For UDP these two functions are the same
   transportReceive();
}

void 
AsyncUdpSocketBase::transportClose()
{
   if (mOnBeforeSocketCloseFp)
   {
      mOnBeforeSocketCloseFp((unsigned int)mSocket.native_handle());
   }

   asio::error_code ec;
   mSocket.close(ec);
}

}


/* ====================================================================

 Copyright (c) 2007-2008, Plantronics, Inc.
 Copyright (c) 2008-2018, SIP Spectrum, Inc.
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    may be used to endorse or promote products derived from this 
    software without specific prior written permission. 

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