Added UDP replies to halt Tx and set free text message

Also added Tx status to status UDP message.

Added   the    above   features   to   the    reference   UDP   server
message_aggregator.

Merged from the wsjtx-1.5 branch.



git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5334 ab8295b8-cf94-4d9e-aec4-7959e3be5d79

MessageClient.hpp

@@ -46,7 +46,7 @@ public:
 
   // outgoing messages
   Q_SLOT void status_update (Frequency, QString const& mode, QString const& dx_call, QString const& report
-                             , QString const& tx_mode);
+                             , QString const& tx_mode, bool transmitting);
   Q_SLOT void decode (bool is_new, QTime time, qint32 snr, float delta_time, quint32 delta_frequency
                       , QString const& mode, QString const& message);
   Q_SLOT void clear_decodes ();
@@ -69,6 +69,14 @@ public:
   // all decodes
   Q_SIGNAL void replay ();
 
+  // this signal is emitted if the server has requested transmission
+  // to halt immediately
+  Q_SIGNAL void halt_tx ();
+
+  // this signal is emitted if the server has requested a new free
+  // message text
+  Q_SIGNAL void free_text (QString const&);
+
   // this signal is emitted when network errors occur or if a host
   // lookup fails
   Q_SIGNAL void error (QString const&) const;