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3f75b4144a
To facilitate interaction with other applications WSJT-X now sends status updates to a predefined UDP server or multicast group address. The status updates include the information currently posted to the decodes.txt and wsjtx_status.txt files. An optional back communications channel is also implemented allowing the UDP server application to control some basic actions in WSJT-X. A reference implementaion of a typical UDP server written in C++ using Qt is provided to demonstrate these facilities. This application is not intended as a user tool but only as an example of how a third party application may interact with WSJT-X. The UDP messages Use QDataStream based serialization. Messages are documented in NetworkMessage.hpp along with some helper classes that simplify the building and decoding of messages. Two message handling classes are introduced, MessageClient and MessageServer. WSJT-X uses the MessageClient class to manage outgoing and incoming UDP messages that allow communication with other applications. The MessageServer class implements the kind of code that a potential cooperating application might use. Although these classes use Qt serialization facilities, the message formats are easily read and written by applications that do not use the Qt framework. MessageAggregator is a demonstration application that uses MessageServer and presents a GUI that displays messages from one or more WSJT-X instances and allows sending back a CQ or QRZ reply invocation by double clicking a decode. This application is not intended as a user facing tool but rather as a demonstration of the WSJT-X UDP messaging facility. It also demonstrates being a multicast UDP server by allowing multiple instances to run concurrently. This is enabled by using an appropriate multicast group address as the server address. Cooperating applications need not implement multicast techniques but it is recomended otherwise only a single appliaction can act as a broadcast message (from WSJT-X) recipient. git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5225 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
82 lines
2.7 KiB
C++
82 lines
2.7 KiB
C++
#ifndef MESSAGE_CLIENT_HPP__
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#define MESSAGE_CLIENT_HPP__
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#include <QObject>
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#include <QHostAddress>
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#include <QTime>
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#include <QDateTime>
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#include <QString>
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#include <QByteArray>
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#include "Radio.hpp"
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#include "pimpl_h.hpp"
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//
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// MessageClient - Manage messages sent and replies received from a
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// matching server (MessageServer) at the other end of
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// the wire
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//
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//
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// Each outgoing message type is a Qt slot
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//
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class MessageClient
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: public QObject
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{
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Q_OBJECT;
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public:
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using Frequency = Radio::Frequency;
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using port_type = quint16;
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// instantiate and initiate a host lookup on the server
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//
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// messages will be silently dropped until a server host lookup is complete
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MessageClient (QString const& id, QString const& server, port_type server_port, QObject * parent = nullptr);
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// query server details
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QHostAddress server_address () const;
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port_type server_port () const;
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// initiate a new server host lookup or is the server name is empty
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// the sending of messages is disabled
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Q_SLOT void set_server (QString const& server = QString {});
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// change the server port messages are sent to
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Q_SLOT void set_server_port (port_type server_port = 0u);
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// outgoing messages
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Q_SLOT void status_update (Frequency, QString const& mode, QString const& dx_call, QString const& report
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, QString const& tx_mode);
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Q_SLOT void decode (bool is_new, QTime time, qint32 snr, float delta_time, quint32 delta_frequency
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, QString const& mode, QString const& message);
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Q_SLOT void clear_decodes ();
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Q_SLOT void qso_logged (QDateTime time, QString const& dx_call, QString const& dx_grid
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, Frequency dial_frequency, QString const& mode, QString const& report_sent
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, QString const& report_received, QString const& tx_power, QString const& comments
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, QString const& name);
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// this slot may be used to send arbitrary UDP datagrams to and
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// destination allowing the underlying socket to be used for general
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// UDP messaging if desired
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Q_SLOT void send_raw_datagram (QByteArray const&, QHostAddress const& dest_address, port_type dest_port);
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// this signal is emitted if the server sends us a reply, the only
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// reply supported is reply to a prior CQ or QRZ message
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Q_SIGNAL void reply (QTime, qint32 snr, float delta_time, quint32 delta_frequency, QString const& mode
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, QString const& message_text);
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// this signal is emitted if the server has requested a replay of
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// all decodes
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Q_SIGNAL void replay ();
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// this signal is emitted when network errors occur or if a host
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// lookup fails
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Q_SIGNAL void error (QString const&) const;
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private:
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class impl;
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pimpl<impl> m_;
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};
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#endif
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