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/*
Copyright (c) 2015, Arvid Norberg
All rights reserved.
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 3 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. If not, see <http://www.gnu.org/licenses/>.
*/
#include "simulator/simulator.hpp"
#include <functional>
#include "catch.hpp"
#ifdef __GNUC__
// for CATCH's CHECK macro
#pragma GCC diagnostic ignored "-Wparentheses"
#endif
using namespace sim::asio;
using namespace sim::chrono;
using sim::simulation;
using sim::default_config;
using namespace std::placeholders;
char send_buffer[10000];
char recv_buffer[10000];
int num_received = 0;
int num_sent = 0;
void on_sent(boost::system::error_code const& ec, std::size_t bytes_transferred
, ip::tcp::socket& sock)
{
int millis = int(duration_cast<milliseconds>(high_resolution_clock::now()
.time_since_epoch()).count());
if (ec)
{
std::printf("[%4d] send error %s\n", millis, ec.message().c_str());
return;
}
num_sent += bytes_transferred;
std::printf("[%4d] sent %d bytes (total: %d)\n"
, millis, int(bytes_transferred), num_sent);
if (num_sent < 1000000)
{
sock.async_write_some(sim::asio::buffer(send_buffer
, (std::min)(1000000 - num_sent, int(sizeof(send_buffer))))
, std::bind(&on_sent, _1, _2, std::ref(sock)));
return;
}
std::printf("closing\n");
sock.close();
}
void on_receive(boost::system::error_code const& ec, ip::tcp::socket& sock)
{
int millis = int(duration_cast<milliseconds>(high_resolution_clock::now()
.time_since_epoch()).count());
if (ec)
{
std::printf("[%4d] receive error %s\n", millis, ec.message().c_str());
return;
}
boost::system::error_code err;
std::size_t bytes_transferred = sock.read_some(sim::asio::buffer(
recv_buffer, sizeof(recv_buffer)), err);
if (err && err != boost::system::error_code(error::would_block))
{
std::printf("[%4d] receive error %s\n", millis, err.message().c_str());
return;
}
num_received += bytes_transferred;
std::printf("[%4d] received %d bytes (total: %d)\n"
, millis, int(bytes_transferred), num_received);
sock.async_wait(ip::tcp::socket::wait_read
, std::bind(&on_receive, _1, std::ref(sock)));
}
void incoming_connection(boost::system::error_code const& ec
, ip::tcp::socket& sock, ip::tcp::endpoint const& ep)
{
int millis = int(duration_cast<milliseconds>(high_resolution_clock::now()
.time_since_epoch()).count());
if (ec)
{
std::printf("[%4d] error while accepting connection: %s\n"
, millis, ec.message().c_str());
return;
}
boost::system::error_code err;
ip::tcp::endpoint remote_endpoint = sock.remote_endpoint(err);
if (ec) std::printf("[%4d] local_endpoint failed: %s\n", millis, ec.message().c_str());
ip::tcp::endpoint local_endpoint = sock.local_endpoint(err);
if (ec) std::printf("[%4d] remote_endpoint failed: %s\n", millis, ec.message().c_str());
std::printf("[%4d] received incoming connection from: %s:%d. local endpoint: %s:%d\n"
, millis, ep.address().to_string().c_str(), ep.port()
, local_endpoint.address().to_string().c_str(), local_endpoint.port());
CHECK(local_endpoint.port() == 1337);
CHECK(local_endpoint.address().to_string() == "40.30.20.10");
CHECK(remote_endpoint.port() != 0);
CHECK(remote_endpoint.address().to_string() == "10.20.30.40");
sock.non_blocking(true);
if (err) std::printf("[%4d] ioctl failed: %s\n", millis, err.message().c_str());
sock.async_wait(ip::tcp::socket::wait_read
, std::bind(&on_receive, _1, std::ref(sock)));
}
void on_connected(boost::system::error_code const& ec
, ip::tcp::socket& sock)
{
int millis = int(duration_cast<milliseconds>(high_resolution_clock::now()
.time_since_epoch()).count());
if (ec)
{
std::printf("[%4d] error while connecting: %s\n", millis, ec.message().c_str());
return;
}
boost::system::error_code err;
ip::tcp::endpoint remote_endpoint = sock.remote_endpoint(err);
if (ec) std::printf("[%4d] remote_endpoint failed: %s\n", millis, ec.message().c_str());
ip::tcp::endpoint local_endpoint = sock.local_endpoint(err);
if (ec) std::printf("[%4d] local_endpoint failed: %s\n", millis, ec.message().c_str());
std::printf("[%4d] made outgoing connection to: %s:%d. local endpoint: %s:%d\n"
, millis
, remote_endpoint.address().to_string().c_str(), remote_endpoint.port()
, local_endpoint.address().to_string().c_str(), local_endpoint.port());
CHECK(remote_endpoint.port() == 1337);
CHECK(remote_endpoint.address().to_string() == "40.30.20.10");
CHECK(local_endpoint.port() != 0);
CHECK(local_endpoint.address().to_string() == "10.20.30.40");
std::printf("sending %d bytes\n", int(sizeof(send_buffer)));
sock.async_write_some(sim::asio::buffer(send_buffer, sizeof(send_buffer))
, std::bind(&on_sent, _1, _2, std::ref(sock)));
}
TEST_CASE("receive null_buffers", "[null_buffers]")
{
default_config cfg;
simulation sim(cfg);
io_context incoming_ios(sim, ip::make_address_v4("40.30.20.10"));
io_context outgoing_ios(sim, ip::make_address_v4("10.20.30.40"));
ip::tcp::acceptor listener(incoming_ios);
int millis = int(duration_cast<milliseconds>(high_resolution_clock::now()
.time_since_epoch()).count());
boost::system::error_code ec;
listener.open(ip::tcp::v4(), ec);
if (ec) std::printf("[%4d] open failed: %s\n", millis, ec.message().c_str());
listener.bind(ip::tcp::endpoint(ip::address(), 1337), ec);
if (ec) std::printf("[%4d] bind failed: %s\n", millis, ec.message().c_str());
listener.listen(10, ec);
if (ec) std::printf("[%4d] listen failed: %s\n", millis, ec.message().c_str());
dump_network_graph(sim, "null_buffers.dot");
ip::tcp::socket incoming(incoming_ios);
ip::tcp::endpoint remote_endpoint;
listener.async_accept(incoming, remote_endpoint
, std::bind(&incoming_connection, _1, std::ref(incoming)
, std::cref(remote_endpoint)));
std::printf("[%4d] connecting\n", millis);
ip::tcp::socket outgoing(outgoing_ios);
outgoing.open(ip::tcp::v4(), ec);
if (ec) std::printf("[%4d] open failed: %s\n", millis, ec.message().c_str());
outgoing.async_connect(ip::tcp::endpoint(ip::make_address("40.30.20.10")
, 1337), std::bind(&on_connected, _1, std::ref(outgoing)));
sim.run();
millis = int(duration_cast<milliseconds>(high_resolution_clock::now()
.time_since_epoch()).count());
std::printf("num_sent: %d num_received: %d\n"
, num_sent, num_received);
CHECK(num_received == num_sent);
CHECK(num_received == 1000000);
}
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