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doorlockd-mirror/doorlockd/client/network.cpp
Ralf Ramsauer d1d0d5b160 Fix QT quirk
So far, we used QT interfaces in a wrong way. QT is not thread safe, so
use its signal/slot concept and move network communication stuff to a
separate QThread.

Signed-off-by: Ralf Ramsauer <ralf@ramses-pyramidenbau.de>
2016-07-31 15:48:19 +02:00

95 lines
3.2 KiB
C++

#include "network.h"
#include "../lib/response.h"
namespace ba = boost::asio;
using ba::ip::tcp;
const std::string NetworkThread::_subscription_command = "{ \"command\": \"subscribe\"}";
NetworkThread::NetworkThread(const std::string &hostname,
const unsigned short port) :
QThread(),
_l(Logger::get()),
_hostname(hostname),
_port(port),
_io_service()
{
}
void NetworkThread::run() {
do {
try {
tcp::resolver resolver(_io_service);
tcp::socket socket(_io_service);
tcp::resolver::query query(_hostname, std::to_string(_port));
tcp::resolver::iterator endpoint_iterator = resolver.resolve(query);
tcp::resolver::iterator end;
boost::system::error_code error = ba::error::host_not_found;
std::vector<char> data;
while (error && endpoint_iterator != end) {
socket.close();
socket.connect(*endpoint_iterator++, error);
}
if (error)
throw boost::system::system_error(error);
// After connection is established, send the subscription command
socket.write_some(ba::buffer(_subscription_command), error);
if (error)
throw boost::system::system_error(error);
data.resize(_SOCKET_BUFFERLENGTH);
std::function<void(void)> receiveMessage = [&] () {
socket.async_read_some(ba::buffer(data),
[&] (const boost::system::error_code &ec,
const size_t length)
{
if (ec) {
throw boost::system::system_error(ec);
}
const auto msg = Clientmessage::fromString(
std::string(data.begin(), data.begin()+length));
// Received valid Clientmessage
// Log it!
const auto& doormessage = msg.doormessage();
_l("Received message", LogLevel::info);
_l((std::string)" token: " + msg.web_address(),
LogLevel::info);
_l((std::string)" open: " + std::to_string(msg.isOpen()),
LogLevel::info);
_l((std::string)" button lock: " + std::to_string(doormessage.isLockButton),
LogLevel::info);
_l((std::string)" button unlock: " + std::to_string(doormessage.isUnlockButton),
LogLevel::info);
_l((std::string)" emergency open: " + std::to_string(doormessage.isEmergencyUnlock),
LogLevel::info);
// Emit the new message
emit new_clientmessage(msg);
// Wait for new message
receiveMessage();
});
};
receiveMessage();
_io_service.run();
}
catch(const Response &err) {
_l(err.message, LogLevel::error);
}
catch(const std::exception &err) {
_l(LogLevel::error, err.what());
}
sleep(1);
} while(1);
_io_service.reset();
}