WSJT-X/Network/MessageClient.cpp
2020-08-07 22:40:15 +01:00

583 lines
21 KiB
C++

#include "MessageClient.hpp"
#include <stdexcept>
#include <vector>
#include <algorithm>
#include <limits>
#include <QUdpSocket>
#include <QHostInfo>
#include <QTimer>
#include <QQueue>
#include <QByteArray>
#include <QHostAddress>
#include <QColor>
#include <QDebug>
#include "NetworkMessage.hpp"
#include "pimpl_impl.hpp"
#include "moc_MessageClient.cpp"
// some trace macros
#if WSJT_TRACE_UDP
#define TRACE_UDP(MSG) qDebug () << QString {"MessageClient::%1:"}.arg (__func__) << MSG
#else
#define TRACE_UDP(MSG)
#endif
class MessageClient::impl
: public QUdpSocket
{
Q_OBJECT;
public:
impl (QString const& id, QString const& version, QString const& revision,
port_type server_port, MessageClient * self)
: self_ {self}
, dns_lookup_id_ {0}
, enabled_ {false}
, id_ {id}
, version_ {version}
, revision_ {revision}
, server_port_ {server_port}
, schema_ {2} // use 2 prior to negotiation not 1 which is broken
, heartbeat_timer_ {new QTimer {this}}
{
connect (heartbeat_timer_, &QTimer::timeout, this, &impl::heartbeat);
connect (this, &QIODevice::readyRead, this, &impl::pending_datagrams);
heartbeat_timer_->start (NetworkMessage::pulse * 1000);
// bind to an ephemeral port
bind ();
}
~impl ()
{
closedown ();
}
enum StreamStatus {Fail, Short, OK};
void parse_message (QByteArray const& msg);
void pending_datagrams ();
void heartbeat ();
void closedown ();
StreamStatus check_status (QDataStream const&) const;
void send_message (QByteArray const&);
void send_message (QDataStream const& out, QByteArray const& message)
{
if (OK == check_status (out))
{
send_message (message);
}
else
{
Q_EMIT self_->error ("Error creating UDP message");
}
}
Q_SLOT void host_info_results (QHostInfo);
MessageClient * self_;
int dns_lookup_id_;
bool enabled_;
QString id_;
QString version_;
QString revision_;
QString server_string_;
port_type server_port_;
QHostAddress server_;
quint32 schema_;
QTimer * heartbeat_timer_;
std::vector<QHostAddress> blocked_addresses_;
// hold messages sent before host lookup completes asynchronously
QQueue<QByteArray> pending_messages_;
QByteArray last_message_;
};
#include "MessageClient.moc"
void MessageClient::impl::host_info_results (QHostInfo host_info)
{
if (host_info.lookupId () != dns_lookup_id_) return;
if (QHostInfo::NoError != host_info.error ())
{
Q_EMIT self_->error ("UDP server lookup failed:\n" + host_info.errorString ());
pending_messages_.clear (); // discard
}
else if (host_info.addresses ().size ())
{
auto server = host_info.addresses ()[0];
if (blocked_addresses_.end () == std::find (blocked_addresses_.begin (), blocked_addresses_.end (), server))
{
server_ = server;
TRACE_UDP ("resulting server:" << server);
// send initial heartbeat which allows schema negotiation
heartbeat ();
// clear any backlog
while (pending_messages_.size ())
{
send_message (pending_messages_.dequeue ());
}
}
else
{
Q_EMIT self_->error ("UDP server blocked, please try another");
pending_messages_.clear (); // discard
}
}
}
void MessageClient::impl::pending_datagrams ()
{
while (hasPendingDatagrams ())
{
QByteArray datagram;
datagram.resize (pendingDatagramSize ());
QHostAddress sender_address;
port_type sender_port;
if (0 <= readDatagram (datagram.data (), datagram.size (), &sender_address, &sender_port))
{
TRACE_UDP ("message received from:" << sender_address << "port:" << sender_port);
parse_message (datagram);
}
}
}
void MessageClient::impl::parse_message (QByteArray const& msg)
{
try
{
//
// message format is described in NetworkMessage.hpp
//
NetworkMessage::Reader in {msg};
if (OK == check_status (in))
{
if (schema_ < in.schema ()) // one time record of server's
// negotiated schema
{
schema_ = in.schema ();
}
if (!enabled_)
{
TRACE_UDP ("message processing disabled for id:" << in.id ());
return;
}
//
// message format is described in NetworkMessage.hpp
//
switch (in.type ())
{
case NetworkMessage::Reply:
{
// unpack message
QTime time;
qint32 snr;
float delta_time;
quint32 delta_frequency;
QByteArray mode;
QByteArray message;
bool low_confidence {false};
quint8 modifiers {0};
in >> time >> snr >> delta_time >> delta_frequency >> mode >> message
>> low_confidence >> modifiers;
TRACE_UDP ("Reply: time:" << time << "snr:" << snr << "dt:" << delta_time << "df:" << delta_frequency << "mode:" << mode << "message:" << message << "low confidence:" << low_confidence << "modifiers: 0x" << hex << modifiers);
if (check_status (in) != Fail)
{
Q_EMIT self_->reply (time, snr, delta_time, delta_frequency
, QString::fromUtf8 (mode), QString::fromUtf8 (message)
, low_confidence, modifiers);
}
}
break;
case NetworkMessage::Clear:
{
quint8 window {0};
in >> window;
TRACE_UDP ("Clear window:" << window);
if (check_status (in) != Fail)
{
Q_EMIT self_->clear_decodes (window);
}
}
break;
case NetworkMessage::Close:
TRACE_UDP ("Close");
if (check_status (in) != Fail)
{
last_message_.clear ();
Q_EMIT self_->close ();
}
break;
case NetworkMessage::Replay:
TRACE_UDP ("Replay");
if (check_status (in) != Fail)
{
last_message_.clear ();
Q_EMIT self_->replay ();
}
break;
case NetworkMessage::HaltTx:
{
bool auto_only {false};
in >> auto_only;
TRACE_UDP ("Halt Tx auto_only:" << auto_only);
if (check_status (in) != Fail)
{
Q_EMIT self_->halt_tx (auto_only);
}
}
break;
case NetworkMessage::FreeText:
{
QByteArray message;
bool send {true};
in >> message >> send;
TRACE_UDP ("FreeText message:" << message << "send:" << send);
if (check_status (in) != Fail)
{
Q_EMIT self_->free_text (QString::fromUtf8 (message), send);
}
}
break;
case NetworkMessage::Location:
{
QByteArray location;
in >> location;
TRACE_UDP ("Location location:" << location);
if (check_status (in) != Fail)
{
Q_EMIT self_->location (QString::fromUtf8 (location));
}
}
break;
case NetworkMessage::HighlightCallsign:
{
QByteArray call;
QColor bg; // default invalid color
QColor fg; // default invalid color
bool last_only {false};
in >> call >> bg >> fg >> last_only;
TRACE_UDP ("HighlightCallsign call:" << call << "bg:" << bg << "fg:" << fg << "last only:" << last_only);
if (check_status (in) != Fail && call.size ())
{
Q_EMIT self_->highlight_callsign (QString::fromUtf8 (call), bg, fg, last_only);
}
}
break;
case NetworkMessage::SwitchConfiguration:
{
QByteArray configuration_name;
in >> configuration_name;
TRACE_UDP ("Switch Configuration name:" << configuration_name);
if (check_status (in) != Fail)
{
Q_EMIT self_->switch_configuration (QString::fromUtf8 (configuration_name));
}
}
break;
case NetworkMessage::Configure:
{
QByteArray mode;
quint32 frequency_tolerance;
QByteArray submode;
bool fast_mode {false};
quint32 tr_period {std::numeric_limits<quint32>::max ()};
quint32 rx_df {std::numeric_limits<quint32>::max ()};
QByteArray dx_call;
QByteArray dx_grid;
bool generate_messages {false};
in >> mode >> frequency_tolerance >> submode >> fast_mode >> tr_period >> rx_df
>> dx_call >> dx_grid >> generate_messages;
TRACE_UDP ("Configure mode:" << mode << "frequency tolerance:" << frequency_tolerance << "submode:" << submode << "fast mode:" << fast_mode << "T/R period:" << tr_period << "rx df:" << rx_df << "dx call:" << dx_call << "dx grid:" << dx_grid << "generate messages:" << generate_messages);
if (check_status (in) != Fail)
{
Q_EMIT self_->configure (QString::fromUtf8 (mode), frequency_tolerance
, QString::fromUtf8 (submode), fast_mode, tr_period, rx_df
, QString::fromUtf8 (dx_call), QString::fromUtf8 (dx_grid)
, generate_messages);
}
}
break;
default:
// Ignore
//
// Note that although server heartbeat messages are not
// parsed here they are still partially parsed in the
// message reader class to negotiate the maximum schema
// number being used on the network.
if (NetworkMessage::Heartbeat != in.type ())
{
TRACE_UDP ("ignoring message type:" << in.type ());
}
break;
}
}
else
{
TRACE_UDP ("ignored message for id:" << in.id ());
}
}
catch (std::exception const& e)
{
Q_EMIT self_->error (QString {"MessageClient exception: %1"}.arg (e.what ()));
}
catch (...)
{
Q_EMIT self_->error ("Unexpected exception in MessageClient");
}
}
void MessageClient::impl::heartbeat ()
{
if (server_port_ && !server_.isNull ())
{
QByteArray message;
NetworkMessage::Builder hb {&message, NetworkMessage::Heartbeat, id_, schema_};
hb << NetworkMessage::Builder::schema_number // maximum schema number accepted
<< version_.toUtf8 () << revision_.toUtf8 ();
if (OK == check_status (hb))
{
TRACE_UDP ("schema:" << schema_ << "max schema:" << NetworkMessage::Builder::schema_number << "version:" << version_ << "revision:" << revision_);
writeDatagram (message, server_, server_port_);
}
}
}
void MessageClient::impl::closedown ()
{
if (server_port_ && !server_.isNull ())
{
QByteArray message;
NetworkMessage::Builder out {&message, NetworkMessage::Close, id_, schema_};
if (OK == check_status (out))
{
TRACE_UDP ("");
writeDatagram (message, server_, server_port_);
}
}
}
void MessageClient::impl::send_message (QByteArray const& message)
{
if (server_port_)
{
if (!server_.isNull ())
{
if (message != last_message_) // avoid duplicates
{
writeDatagram (message, server_, server_port_);
last_message_ = message;
}
}
else
{
pending_messages_.enqueue (message);
}
}
}
auto MessageClient::impl::check_status (QDataStream const& stream) const -> StreamStatus
{
auto stat = stream.status ();
StreamStatus result {Fail};
switch (stat)
{
case QDataStream::ReadPastEnd:
result = Short;
break;
case QDataStream::ReadCorruptData:
Q_EMIT self_->error ("Message serialization error: read corrupt data");
break;
case QDataStream::WriteFailed:
Q_EMIT self_->error ("Message serialization error: write error");
break;
default:
result = OK;
break;
}
return result;
}
MessageClient::MessageClient (QString const& id, QString const& version, QString const& revision,
QString const& server, port_type server_port, QObject * self)
: QObject {self}
, m_ {id, version, revision, server_port, this}
{
connect (&*m_
#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
, static_cast<void (impl::*) (impl::SocketError)> (&impl::error), [this] (impl::SocketError e)
#else
, &impl::errorOccurred, [this] (impl::SocketError e)
#endif
{
#if defined (Q_OS_WIN)
if (e != impl::NetworkError // take this out when Qt 5.5 stops doing this spuriously
&& e != impl::ConnectionRefusedError) // not interested in this with UDP socket
{
#else
{
Q_UNUSED (e);
#endif
Q_EMIT error (m_->errorString ());
}
});
set_server (server);
}
QHostAddress MessageClient::server_address () const
{
return m_->server_;
}
auto MessageClient::server_port () const -> port_type
{
return m_->server_port_;
}
void MessageClient::set_server (QString const& server)
{
m_->server_.clear ();
m_->server_string_ = server;
if (server.size ())
{
// queue a host address lookup
TRACE_UDP ("server host DNS lookup:" << server);
#if QT_VERSION >= QT_VERSION_CHECK(5, 9, 0)
m_->dns_lookup_id_ = QHostInfo::lookupHost (server, &*m_, &MessageClient::impl::host_info_results);
#else
m_->dns_lookup_id_ = QHostInfo::lookupHost (server, &*m_, SLOT (host_info_results (QHostInfo)));
#endif
}
}
void MessageClient::set_server_port (port_type server_port)
{
m_->server_port_ = server_port;
}
void MessageClient::enable (bool flag)
{
m_->enabled_ = flag;
}
void MessageClient::status_update (Frequency f, QString const& mode, QString const& dx_call
, QString const& report, QString const& tx_mode
, bool tx_enabled, bool transmitting, bool decoding
, quint32 rx_df, quint32 tx_df, QString const& de_call
, QString const& de_grid, QString const& dx_grid
, bool watchdog_timeout, QString const& sub_mode
, bool fast_mode, quint8 special_op_mode
, quint32 frequency_tolerance, quint32 tr_period
, QString const& configuration_name)
{
if (m_->server_port_ && !m_->server_string_.isEmpty ())
{
QByteArray message;
NetworkMessage::Builder out {&message, NetworkMessage::Status, m_->id_, m_->schema_};
out << f << mode.toUtf8 () << dx_call.toUtf8 () << report.toUtf8 () << tx_mode.toUtf8 ()
<< tx_enabled << transmitting << decoding << rx_df << tx_df << de_call.toUtf8 ()
<< de_grid.toUtf8 () << dx_grid.toUtf8 () << watchdog_timeout << sub_mode.toUtf8 ()
<< fast_mode << special_op_mode << frequency_tolerance << tr_period << configuration_name.toUtf8 ();
TRACE_UDP ("frequency:" << f << "mode:" << mode << "DX:" << dx_call << "report:" << report << "Tx mode:" << tx_mode << "tx_enabled:" << tx_enabled << "Tx:" << transmitting << "decoding:" << decoding << "Rx df:" << rx_df << "Tx df:" << tx_df << "DE:" << de_call << "DE grid:" << de_grid << "DX grid:" << dx_grid << "w/d t/o:" << watchdog_timeout << "sub_mode:" << sub_mode << "fast mode:" << fast_mode << "spec op mode:" << special_op_mode << "frequency tolerance:" << frequency_tolerance << "T/R period:" << tr_period << "configuration name:" << configuration_name);
m_->send_message (out, message);
}
}
void MessageClient::decode (bool is_new, QTime time, qint32 snr, float delta_time, quint32 delta_frequency
, QString const& mode, QString const& message_text, bool low_confidence
, bool off_air)
{
if (m_->server_port_ && !m_->server_string_.isEmpty ())
{
QByteArray message;
NetworkMessage::Builder out {&message, NetworkMessage::Decode, m_->id_, m_->schema_};
out << is_new << time << snr << delta_time << delta_frequency << mode.toUtf8 ()
<< message_text.toUtf8 () << low_confidence << off_air;
TRACE_UDP ("new" << is_new << "time:" << time << "snr:" << snr << "dt:" << delta_time << "df:" << delta_frequency << "mode:" << mode << "text:" << message_text << "low conf:" << low_confidence << "off air:" << off_air);
m_->send_message (out, message);
}
}
void MessageClient::WSPR_decode (bool is_new, QTime time, qint32 snr, float delta_time, Frequency frequency
, qint32 drift, QString const& callsign, QString const& grid, qint32 power
, bool off_air)
{
if (m_->server_port_ && !m_->server_string_.isEmpty ())
{
QByteArray message;
NetworkMessage::Builder out {&message, NetworkMessage::WSPRDecode, m_->id_, m_->schema_};
out << is_new << time << snr << delta_time << frequency << drift << callsign.toUtf8 ()
<< grid.toUtf8 () << power << off_air;
TRACE_UDP ("new:" << is_new << "time:" << time << "snr:" << snr << "dt:" << delta_time << "frequency:" << frequency << "drift:" << drift << "call:" << callsign << "grid:" << grid << "pwr:" << power << "off air:" << off_air);
m_->send_message (out, message);
}
}
void MessageClient::decodes_cleared ()
{
if (m_->server_port_ && !m_->server_string_.isEmpty ())
{
QByteArray message;
NetworkMessage::Builder out {&message, NetworkMessage::Clear, m_->id_, m_->schema_};
TRACE_UDP ("");
m_->send_message (out, message);
}
}
void MessageClient::qso_logged (QDateTime time_off, QString const& dx_call, QString const& dx_grid
, Frequency dial_frequency, QString const& mode, QString const& report_sent
, QString const& report_received, QString const& tx_power
, QString const& comments, QString const& name, QDateTime time_on
, QString const& operator_call, QString const& my_call
, QString const& my_grid, QString const& exchange_sent
, QString const& exchange_rcvd, QString const& propmode)
{
if (m_->server_port_ && !m_->server_string_.isEmpty ())
{
QByteArray message;
NetworkMessage::Builder out {&message, NetworkMessage::QSOLogged, m_->id_, m_->schema_};
out << time_off << dx_call.toUtf8 () << dx_grid.toUtf8 () << dial_frequency << mode.toUtf8 ()
<< report_sent.toUtf8 () << report_received.toUtf8 () << tx_power.toUtf8 () << comments.toUtf8 ()
<< name.toUtf8 () << time_on << operator_call.toUtf8 () << my_call.toUtf8 () << my_grid.toUtf8 ()
<< exchange_sent.toUtf8 () << exchange_rcvd.toUtf8 () << propmode.toUtf8 ();
TRACE_UDP ("time off:" << time_off << "DX:" << dx_call << "DX grid:" << dx_grid << "dial:" << dial_frequency << "mode:" << mode << "sent:" << report_sent << "rcvd:" << report_received << "pwr:" << tx_power << "comments:" << comments << "name:" << name << "time on:" << time_on << "op:" << operator_call << "DE:" << my_call << "DE grid:" << my_grid << "exch sent:" << exchange_sent << "exch rcvd:" << exchange_rcvd << "prop_mode:" << propmode);
m_->send_message (out, message);
}
}
void MessageClient::logged_ADIF (QByteArray const& ADIF_record)
{
if (m_->server_port_ && !m_->server_string_.isEmpty ())
{
QByteArray message;
NetworkMessage::Builder out {&message, NetworkMessage::LoggedADIF, m_->id_, m_->schema_};
QByteArray ADIF {"\n<adif_ver:5>3.1.0\n<programid:6>WSJT-X\n<EOH>\n" + ADIF_record + " <EOR>"};
out << ADIF;
TRACE_UDP ("ADIF:" << ADIF);
m_->send_message (out, message);
}
}