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// osc responder class
// Copyright (C) 2008 Tim Blechmann
//
// 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 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; see the file COPYING. If not, write to
// the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
#ifndef OSC_SERVER_HPP
#define OSC_SERVER_HPP
#include <string>
#include <iostream>
#include <thread>
#include <boost/asio.hpp>
#include <boost/array.hpp>
#include <boost/bind.hpp>
#include "branch_hints.hpp"
#include "osc_dispatcher.hpp"
#include "static_allocator.hpp"
#include "nova-tt/semaphore.hpp"
#include "nova-tt/thread_priority.hpp"
#include "nova-tt/name_thread.hpp"
namespace nova {
namespace detail {
using namespace boost::asio;
using namespace boost::asio::ip;
class network_thread
{
public:
void start_receive(void)
{
thread_ = std::move(std::thread(network_thread::start, this));
sem.wait();
}
~network_thread(void)
{
if (!thread_.joinable())
return;
io_service_.stop();
thread_.join();
}
io_service & get_io_service(void)
{
return io_service_;
}
void send_udp(const char * data, unsigned int size, udp::endpoint const & receiver)
{
udp::socket socket(io_service_);
socket.open(udp::v4());
socket.send_to(boost::asio::buffer(data, size), receiver);
}
private:
static void start(network_thread * self)
{
#ifdef NOVA_TT_PRIORITY_RT
thread_set_priority_rt(thread_priority_interval_rt().first);
#endif
name_thread("Network Receive");
self->run();
}
void run(void)
{
sem.post();
io_service::work work(io_service_);
io_service_.run();
}
protected:
io_service io_service_;
private:
semaphore sem;
std::thread thread_;
};
class osc_server:
private network_thread,
private osc_dispatcher
{
public:
osc_server(unsigned int port):
socket_(network_thread::io_service_, udp::endpoint(udp::v4(), port))
{
network_thread::start_receive();
start_receive();
}
void add_responder(std::string const & address, osc_responder * resp)
{
osc_dispatcher::add_responder(address, resp);
}
void remove_responder(std::string const & address, osc_responder * resp)
{
osc_dispatcher::remove_responder(address, resp);
}
private:
void start_receive(void)
{
socket_.async_receive_from(
buffer(recv_buffer_), remote_endpoint_,
boost::bind(&osc_server::handle_receive, this,
placeholders::error, placeholders::bytes_transferred));
}
void handle_receive(const boost::system::error_code& error,
std::size_t bytes_transferred)
{
if (unlikely(error == error::operation_aborted))
return; /* we're done */
if (error == error::message_size)
{
overflow_vector.insert(overflow_vector.end(),
recv_buffer_.begin(), recv_buffer_.end());
return;
}
if (error)
{
std::cout << "osc_server received error code " << error << std::endl;
start_receive();
return;
}
if (overflow_vector.empty())
osc_dispatcher::handle_packet(recv_buffer_.begin(), bytes_transferred);
else
{
overflow_vector.insert(overflow_vector.end(),
recv_buffer_.begin(), recv_buffer_.end());
osc_dispatcher::handle_packet(overflow_vector.data(), overflow_vector.size());
overflow_vector.clear();
}
start_receive();
return;
}
udp::socket socket_;
boost::array<char, 1<<13 > recv_buffer_;
udp::endpoint remote_endpoint_;
typedef static_allocator<char, 1<<20> string_allocator; /* 1 MB memory pool ...
*
* not thread-safe, but that is
* not required here
*
* */
/* typedef std::basic_string<char, std::char_traits<char>, string_allocator> string; */
typedef std::string string;
string overflow_vector;
};
} /* namespace */
using detail::network_thread;
using detail::osc_server;
} /* namespace nova */
#endif /* OSC_SERVER_HPP */
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