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https://github.com/saitohirga/WSJT-X.git
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c65d832356
The Status(1) message acquires the new fields Frequency Tolerance, T/R Period, and Configuration Name. The Rx DF, Tx DF fields become unsigned (this should be a benign change which is just for correctness as -ve values have never been possible). The Close(6) message becomes bi-directional allowing external applications to gracefully close down WSJT-X instances. A new message SwitchConfiguration(14) is provided that allows an external application to switch the current configuration of a WSJT-X instance. Another new message Configure(15) is provided to allow external applications to adjust some key parameters like the mode and submode. See the NetworkMessages.hpp header commentary for full details. The UDPExamples/MessageAggregator reference application has been updated to be able to exercise all of the above changes. Note that this commit enforces stricter checking on the "Settings->Reporting->Allow UDP requests" option, which must be checked before any state changing incoming messages to a WSJT-X instance are processed.
551 lines
24 KiB
C++
551 lines
24 KiB
C++
#ifndef NETWORK_MESSAGE_HPP__
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#define NETWORK_MESSAGE_HPP__
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/*
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* WSJT-X Message Formats
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* ======================
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*
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* All messages are written or read using the QDataStream derivatives
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* defined below, note that we are using the default for floating
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* point precision which means all are double precision i.e. 64-bit
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* IEEE format.
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*
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* Message is big endian format
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*
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* Header format:
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*
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* 32-bit unsigned integer magic number 0xadbccbda
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* 32-bit unsigned integer schema number
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*
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* Payload format:
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*
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* As per the QDataStream format, see below for version used and
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* here:
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*
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* http://doc.qt.io/qt-5/datastreamformat.html
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*
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* for the serialization details for each type, at the time of
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* writing the above document is for Qt_5_0 format which is buggy
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* so we use Qt_5_4 format, differences are:
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*
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* QDateTime:
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* QDate qint64 Julian day number
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* QTime quint32 Milli-seconds since midnight
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* timespec quint8 0=local, 1=UTC, 2=Offset from UTC
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* (seconds)
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* 3=time zone
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* offset qint32 only present if timespec=2
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* timezone several-fields only present if timespec=3
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*
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* we will avoid using QDateTime fields with time zones for simplicity.
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*
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* Type utf8 is a utf-8 byte string formatted as a QByteArray for
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* serialization purposes (currently a quint32 size followed by size
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* bytes, no terminator is present or counted).
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*
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* The QDataStream format document linked above is not complete for
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* the QByteArray serialization format, it is similar to the QString
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* serialization format in that it differentiates between empty
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* strings and null strings. Empty strings have a length of zero
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* whereas null strings have a length field of 0xffffffff.
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*
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* Schema Negotiation
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* ------------------
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*
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* The NetworkMessage::Builder class specifies a schema number which
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* may be incremented from time to time. It represents a version of
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* the underlying encoding schemes used to store data items. Since the
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* underlying encoding is defined by the Qt project in it's
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* QDataStream stream operators, it is essential that clients and
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* servers of this protocol can agree on a common scheme. The
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* NetworkMessage utility classes below exchange the schema number
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* actually used. The handling of the schema is backwards compatible
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* to an extent, so long as clients and servers are written
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* correctly. For example a server written to any particular schema
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* version can communicate with a client written to a later schema.
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*
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* Schema Version 1:- this schema used the QDataStream::Qt_5_0 version
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* which is broken.
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*
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* Schema Version 2:- this schema uses the QDataStream::Qt_5_2 version.
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*
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* Schema Version 3:- this schema uses the QDataStream::Qt_5_4 version.
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*
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*
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*
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* Message Direction Value Type
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* ------------- --------- ---------------------- -----------
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* Heartbeat Out/In 0 quint32
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* Id (unique key) utf8
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* Maximum schema number quint32
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* version utf8
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* revision utf8
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*
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* The heartbeat message shall be sent on a periodic basis every
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* NetworkMessage::pulse seconds (see below), the WSJT-X
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* application does that using the MessageClient class. This
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* message is intended to be used by servers to detect the presence
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* of a client and also the unexpected disappearance of a client
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* and by clients to learn the schema negotiated by the server
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* after it receives the initial heartbeat message from a client.
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* The message_aggregator reference server does just that using the
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* MessageServer class. Upon initial startup a client must send a
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* heartbeat message as soon as is practical, this message is used
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* to negotiate the maximum schema number common to the client and
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* server. Note that the server may not be able to support the
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* client's requested maximum schema number, in which case the
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* first message received from the server will specify a lower
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* schema number (never a higher one as that is not allowed). If a
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* server replies with a lower schema number then no higher than
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* that number shall be used for all further outgoing messages from
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* either clients or the server itself.
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*
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* Note: the "Maximum schema number" field was introduced at the
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* same time as schema 3, therefore servers and clients must assume
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* schema 2 is the highest schema number supported if the Heartbeat
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* message does not contain the "Maximum schema number" field.
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*
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*
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* Status Out 1 quint32
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* Id (unique key) utf8
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* Dial Frequency (Hz) quint64
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* Mode utf8
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* DX call utf8
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* Report utf8
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* Tx Mode utf8
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* Tx Enabled bool
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* Transmitting bool
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* Decoding bool
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* Rx DF quint32
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* Tx DF quint32
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* DE call utf8
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* DE grid utf8
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* DX grid utf8
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* Tx Watchdog bool
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* Sub-mode utf8
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* Fast mode bool
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* Special Operation Mode quint8
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* Frequency Tolerance quint32
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* T/R Period quint32
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* Configuration Name utf8
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*
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* WSJT-X sends this status message when various internal state
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* changes to allow the server to track the relevant state of each
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* client without the need for polling commands. The current state
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* changes that generate status messages are:
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*
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* Application start up,
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* "Enable Tx" button status changes,
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* dial frequency changes,
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* changes to the "DX Call" field,
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* operating mode, sub-mode or fast mode changes,
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* transmit mode changed (in dual JT9+JT65 mode),
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* changes to the "Rpt" spinner,
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* after an old decodes replay sequence (see Replay below),
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* when switching between Tx and Rx mode,
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* at the start and end of decoding,
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* when the Rx DF changes,
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* when the Tx DF changes,
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* when settings are exited,
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* when the DX call or grid changes,
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* when the Tx watchdog is set or reset,
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* when the frequency tolerance is changed,
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* when the T/R period is changed,
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* when the configuration name changes.
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*
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* The Special operation mode is an enumeration that indicates the
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* setting selected in the WSJT-X "Settings->Advanced->Special
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* operating activity" panel. The values are as follows:
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*
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* 0 -> NONE
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* 1 -> NA VHF
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* 2 -> EU VHF
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* 3 -> FIELD DAY
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* 4 -> RTTY RU
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* 5 -> FOX
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* 6 -> HOUND
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*
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* The Frequency Tolerance and T/R period fields may have a value
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* of the maximum quint32 value which implies the field is not
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* applicable.
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*
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*
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* Decode Out 2 quint32
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* Id (unique key) utf8
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* New bool
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* Time QTime
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* snr qint32
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* Delta time (S) float (serialized as double)
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* Delta frequency (Hz) quint32
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* Mode utf8
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* Message utf8
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* Low confidence bool
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* Off air bool
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*
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* The decode message is sent when a new decode is completed, in
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* this case the 'New' field is true. It is also used in response
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* to a "Replay" message where each old decode in the "Band
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* activity" window, that has not been erased, is sent in order
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* as a one of these messages with the 'New' field set to false.
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* See the "Replay" message below for details of usage. Low
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* confidence decodes are flagged in protocols where the decoder
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* has knows that a decode has a higher than normal probability
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* of being false, they should not be reported on publicly
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* accessible services without some attached warning or further
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* validation. Off air decodes are those that result from playing
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* back a .WAV file.
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*
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*
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* Clear Out/In 3 quint32
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* Id (unique key) utf8
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* Window quint8 (In only)
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*
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* This message is send when all prior "Decode" messages in the
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* "Band Activity" window have been discarded and therefore are
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* no long available for actioning with a "Reply" message. It is
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* sent when the user erases the "Band activity" window and when
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* WSJT-X closes down normally. The server should discard all
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* decode messages upon receipt of this message.
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*
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* It may also be sent to a WSJT-X instance in which case it
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* clears one or both of the "Band Activity" and "Rx Frequency"
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* windows. The Window argument can be one of the following
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* values:
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*
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* 0 - clear the "Band Activity" window (default)
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* 1 - clear the "Rx Frequency" window
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* 2 - clear both "Band Activity" and "Rx Frequency" windows
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*
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*
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* Reply In 4 quint32
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* Id (target unique key) utf8
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* Time QTime
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* snr qint32
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* Delta time (S) float (serialized as double)
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* Delta frequency (Hz) quint32
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* Mode utf8
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* Message utf8
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* Low confidence bool
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* Modifiers quint8
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*
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* In order for a server to provide a useful cooperative service
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* to WSJT-X it is possible for it to initiate a QSO by sending
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* this message to a client. WSJT-X filters this message and only
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* acts upon it if the message exactly describes a prior decode
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* and that decode is a CQ or QRZ message. The action taken is
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* exactly equivalent to the user double clicking the message in
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* the "Band activity" window. The intent of this message is for
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* servers to be able to provide an advanced look up of potential
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* QSO partners, for example determining if they have been worked
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* before or if working them may advance some objective like
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* award progress. The intention is not to provide a secondary
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* user interface for WSJT-X, it is expected that after QSO
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* initiation the rest of the QSO is carried out manually using
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* the normal WSJT-X user interface.
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*
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* The Modifiers field allows the equivalent of keyboard
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* modifiers to be sent "as if" those modifier keys where pressed
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* while double-clicking the specified decoded message. The
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* modifier values (hexadecimal) are as follows:
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*
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* no modifier 0x00
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* SHIFT 0x02
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* CTRL 0x04 CMD on Mac
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* ALT 0x08
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* META 0x10 Windows key on MS Windows
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* KEYPAD 0x20 Keypad or arrows
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* Group switch 0x40 X11 only
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*
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*
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* QSO Logged Out 5 quint32
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* Id (unique key) utf8
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* Date & Time Off QDateTime
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* DX call utf8
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* DX grid utf8
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* Tx frequency (Hz) quint64
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* Mode utf8
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* Report sent utf8
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* Report received utf8
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* Tx power utf8
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* Comments utf8
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* Name utf8
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* Date & Time On QDateTime
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* Operator call utf8
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* My call utf8
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* My grid utf8
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* Exchange sent utf8
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* Exchange received utf8
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*
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* The QSO logged message is sent to the server(s) when the
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* WSJT-X user accepts the "Log QSO" dialog by clicking the "OK"
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* button.
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*
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*
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* Close Out/In 6 quint32
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* Id (unique key) utf8
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*
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* Close is sent by a client immediately prior to it shutting
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* down gracefully. When sent by a server it requests the target
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* client to close down gracefully.
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*
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*
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* Replay In 7 quint32
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* Id (unique key) utf8
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*
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* When a server starts it may be useful for it to determine the
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* state of preexisting clients. Sending this message to each
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* client as it is discovered will cause that client (WSJT-X) to
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* send a "Decode" message for each decode currently in its "Band
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* activity" window. Each "Decode" message sent will have the
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* "New" flag set to false so that they can be distinguished from
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* new decodes. After all the old decodes have been broadcast a
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* "Status" message is also broadcast. If the server wishes to
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* determine the status of a newly discovered client; this
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* message should be used.
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*
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*
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* Halt Tx In 8
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* Id (unique key) utf8
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* Auto Tx Only bool
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*
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* The server may stop a client from transmitting messages either
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* immediately or at the end of the current transmission period
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* using this message.
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*
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*
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* Free Text In 9
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* Id (unique key) utf8
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* Text utf8
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* Send bool
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*
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* This message allows the server to set the current free text
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* message content. Sending this message with a non-empty "Text"
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* field is equivalent to typing a new message (old contents are
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* discarded) in to the WSJT-X free text message field or "Tx5"
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* field (both are updated) and if the "Send" flag is set then
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* clicking the "Now" radio button for the "Tx5" field if tab one
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* is current or clicking the "Free msg" radio button if tab two
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* is current.
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*
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* It is the responsibility of the sender to limit the length of
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* the message text and to limit it to legal message
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* characters. Despite this, it may be difficult for the sender
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* to determine the maximum message length without reimplementing
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* the complete message encoding protocol. Because of this is may
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* be better to allow any reasonable message length and to let
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* the WSJT-X application encode and possibly truncate the actual
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* on-air message.
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*
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* If the message text is empty the meaning of the message is
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* refined to send the current free text unchanged when the
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* "Send" flag is set or to clear the current free text when the
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* "Send" flag is unset. Note that this API does not include a
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* command to determine the contents of the current free text
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* message.
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*
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*
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* WSPRDecode Out 10 quint32
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* Id (unique key) utf8
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* New bool
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* Time QTime
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* snr qint32
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* Delta time (S) float (serialized as double)
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* Frequency (Hz) quint64
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* Drift (Hz) qint32
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* Callsign utf8
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* Grid utf8
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* Power (dBm) qint32
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* Off air bool
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*
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* The decode message is sent when a new decode is completed, in
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* this case the 'New' field is true. It is also used in response
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* to a "Replay" message where each old decode in the "Band
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* activity" window, that has not been erased, is sent in order
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* as a one of these messages with the 'New' field set to
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* false. See the "Replay" message below for details of
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* usage. The off air field indicates that the decode was decoded
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* from a played back recording.
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*
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*
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* Location In 11
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* Id (unique key) utf8
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* Location utf8
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*
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* This message allows the server to set the current current
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* geographical location of operation. The supplied location is
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* not persistent but is used as a session lifetime replacement
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* loction that overrides the Maidenhead grid locater set in the
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* application settings. The intent is to allow an external
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* application to update the operating location dynamically
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* during a mobile period of operation.
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*
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* Currently only Maidenhead grid squares or sub-squares are
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* accepted, i.e. 4- or 6-digit locators. Other formats may be
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* accepted in future.
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*
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*
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* Logged ADIF Out 12 quint32
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* Id (unique key) utf8
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* ADIF text utf8
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*
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* The logged ADIF message is sent to the server(s) when the
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* WSJT-X user accepts the "Log QSO" dialog by clicking the "OK"
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* button. The "ADIF text" field consists of a valid ADIF file
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* such that the WSJT-X UDP header information is encapsulated
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* into a valid ADIF header. E.g.:
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*
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* <magic-number><schema-number><type><id><32-bit-count> # binary encoded fields
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* # the remainder is the contents of the ADIF text field
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* <adif_ver:5>3.0.7
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* <programid:6>WSJT-X
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* <EOH>
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* ADIF log data fields ...<EOR>
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*
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* Note that receiving applications can treat the whole message
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* as a valid ADIF file with one record without special parsing.
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*
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*
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* Highlight Callsign In 13 quint32
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* Id (unique key) utf8
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* Callsign utf8
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* Background Color QColor
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* Foreground Color QColor
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* Highlight last bool
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*
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* The server may send this message at any time. The message
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* specifies the background and foreground color that will be
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* used to highlight the specified callsign in the decoded
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* messages printed in the Band Activity panel. The WSJT-X
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* clients maintain a list of such instructions and apply them to
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* all decoded messages in the band activity window. To clear
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* highlighting send an invalid QColor value for either or both
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* of the background and foreground fields.
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*
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* The "Highlight last" field allows the sender to request that
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* the last instance only instead of all instances of the
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* specified call be highlighted or have it's highlighting
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* cleared.
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*
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*
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* SwitchConfiguration In 14 quint32
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* Id (unique key) utf8
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* Configuration Name utf8
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*
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* The server may send this message at any time. The message
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* specifies the name of the configuration to switch to. The new
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* configuration must exist.
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*
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*
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* Configure In 15 quint32
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* Id (unique key) utf8
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* Mode utf8
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* Frequency Tolerance quint32
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* Submode utf8
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* Fast Mode bool
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* T/R Period quint32
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* Rx DF quint32
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* DX Call utf8
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* DX Grid utf8
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* Generate Messages bool
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*
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* The server may send this message at any time. The message
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* specifies various configuration options. For utf8 string
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* fields an empty value implies no change, for the quint32 Rx DF
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* and Frequency Tolerance fields the maximum quint32 value
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* implies no change. Invalid or unrecognized values will be
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* silently ignored.
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*/
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#include <QDataStream>
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#include "pimpl_h.hpp"
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class QIODevice;
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class QByteArray;
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class QString;
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namespace NetworkMessage
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{
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// NEVER DELETE MESSAGE TYPES
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enum Type
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{
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Heartbeat,
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Status,
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Decode,
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Clear,
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Reply,
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QSOLogged,
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Close,
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Replay,
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HaltTx,
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FreeText,
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WSPRDecode,
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Location,
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LoggedADIF,
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HighlightCallsign,
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SwitchConfiguration,
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Configure,
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maximum_message_type_ // ONLY add new message types
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// immediately before here
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};
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quint32 constexpr pulse {15}; // seconds
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//
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// NetworkMessage::Builder - build a message containing serialized Qt types
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//
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class Builder
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: public QDataStream
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{
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public:
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static quint32 constexpr magic {0xadbccbda}; // never change this
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// increment this if a newer Qt schema is required and add decode
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// logic to the Builder and Reader class implementations
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#if QT_VERSION >= 0x050400
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static quint32 constexpr schema_number {3};
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#elif QT_VERSION >= 0x050200
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static quint32 constexpr schema_number {2};
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#else
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// Schema 1 (Qt_5_0) is broken
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#error "Qt version 5.2 or greater required"
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#endif
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|
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explicit Builder (QIODevice *, Type, QString const& id, quint32 schema);
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explicit Builder (QByteArray *, Type, QString const& id, quint32 schema);
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Builder (Builder const&) = delete;
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Builder& operator = (Builder const&) = delete;
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|
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private:
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void common_initialization (Type type, QString const& id, quint32 schema);
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};
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|
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//
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// NetworkMessage::Reader - read a message containing serialized Qt types
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//
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// Message is as per NetworkMessage::Builder above, the schema()
|
|
// member may be used to determine the schema of the original
|
|
// message.
|
|
//
|
|
class Reader
|
|
: public QDataStream
|
|
{
|
|
public:
|
|
explicit Reader (QIODevice *);
|
|
explicit Reader (QByteArray const&);
|
|
Reader (Reader const&) = delete;
|
|
Reader& operator = (Reader const&) = delete;
|
|
~Reader ();
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|
|
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quint32 schema () const;
|
|
Type type () const;
|
|
QString id () const;
|
|
|
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private:
|
|
class impl;
|
|
pimpl<impl> m_;
|
|
};
|
|
}
|
|
|
|
#endif
|