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/* -*- c++ -*- */
/*
* Copyright 2007-2010,2013 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "tcp_server_sink_impl.h"
#include <gnuradio/io_signature.h>
#include <gnuradio/thread/thread.h>
#include <stdio.h>
#include <string.h>
#include <boost/array.hpp>
#include <boost/asio.hpp>
#include <boost/format.hpp>
#include <algorithm>
#include <memory>
#include <stdexcept>
namespace gr {
namespace blocks {
tcp_server_sink::sptr
tcp_server_sink::make(size_t itemsize, const std::string& host, int port, bool noblock)
{
return gnuradio::make_block_sptr<tcp_server_sink_impl>(itemsize, host, port, noblock);
}
tcp_server_sink_impl::tcp_server_sink_impl(size_t itemsize,
const std::string& host,
int port,
bool noblock)
: sync_block("tcp_server_sink",
io_signature::make(1, 1, itemsize),
io_signature::make(0, 0, 0)),
d_itemsize(itemsize),
d_acceptor(d_io_service),
d_writing(0)
{
std::string s__port = (boost::format("%d") % port).str();
std::string s__host = host.empty() ? std::string("localhost") : host;
boost::asio::ip::tcp::resolver resolver(d_io_service);
boost::asio::ip::tcp::resolver::query query(
s__host, s__port, boost::asio::ip::resolver_query_base::passive);
d_endpoint = *resolver.resolve(query);
d_acceptor.open(d_endpoint.protocol());
d_acceptor.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
d_acceptor.bind(d_endpoint);
d_acceptor.listen();
if (!noblock) {
auto sock = std::make_unique<boost::asio::ip::tcp::socket>(d_io_service);
d_acceptor.accept(*sock, d_endpoint);
d_sockets.insert(std::move(sock));
}
d_socket = std::make_unique<boost::asio::ip::tcp::socket>(d_io_service);
d_acceptor.async_accept(*d_socket,
boost::bind(&tcp_server_sink_impl::do_accept,
this,
boost::asio::placeholders::error));
d_io_serv_thread =
boost::thread(boost::bind(&boost::asio::io_service::run, &d_io_service));
}
void tcp_server_sink_impl::do_accept(const boost::system::error_code& error)
{
if (!error) {
gr::thread::scoped_lock guard(d_writing_mut);
d_sockets.insert(std::move(d_socket));
d_socket = std::make_unique<boost::asio::ip::tcp::socket>(d_io_service);
d_acceptor.async_accept(*d_socket,
boost::bind(&tcp_server_sink_impl::do_accept,
this,
boost::asio::placeholders::error));
}
}
void tcp_server_sink_impl::do_write(
const boost::system::error_code& error,
size_t len,
std::set<std::unique_ptr<boost::asio::ip::tcp::socket>>::iterator i)
{
{
gr::thread::scoped_lock guard(d_writing_mut);
--d_writing;
if (error) {
d_sockets.erase(i);
}
}
d_writing_cond.notify_one();
}
tcp_server_sink_impl::~tcp_server_sink_impl()
{
gr::thread::scoped_lock guard(d_writing_mut);
while (d_writing) {
d_writing_cond.wait(guard);
}
d_io_service.reset();
d_io_service.stop();
d_io_serv_thread.join();
}
int tcp_server_sink_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
const char* in = (const char*)input_items[0];
gr::thread::scoped_lock guard(d_writing_mut);
while (d_writing) {
d_writing_cond.wait(guard);
}
size_t data_len = std::min(size_t(BUF_SIZE), noutput_items * d_itemsize);
data_len -= data_len % d_itemsize;
memcpy(d_buf.data(), in, data_len);
for (auto i = std::begin(d_sockets); i != std::end(d_sockets); ++i) {
boost::asio::async_write(**i,
boost::asio::buffer(d_buf.data(), data_len),
boost::bind(&tcp_server_sink_impl::do_write,
this,
boost::asio::placeholders::error,
boost::asio::placeholders::bytes_transferred,
i));
}
d_writing = d_sockets.size();
return data_len / d_itemsize;
}
} /* namespace blocks */
} /* namespace gr */
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