interface: do not connect inside the constructor

electrum

@@ -184,14 +184,16 @@ if __name__ == '__main__':
         else:
             sys.exit("Error: Unknown GUI: " + pref_gui )
 
-        gui = gui.ElectrumGui(wallet, config)
         interface = Interface(config, True)
-        interface.register_callback('peers', gui.server_list_changed)
         interface.start()
         wallet.interface = interface
 
+        gui = gui.ElectrumGui(wallet, config)
+        interface.register_callback('peers', gui.server_list_changed)
+        # need to wait until interface is connected..
         WalletSynchronizer(wallet, config).start()
         WalletVerifier(wallet, config).start()
+        
 
         try:
             found = config.wallet_file_exists

lib/gui_qt.py

@@ -208,6 +208,8 @@ class ElectrumWindow(QMainWindow):
         self.wallet = wallet
         self.config = config
         self.wallet.interface.register_callback('updated', self.update_callback)
+        self.wallet.interface.register_callback('connected', self.update_callback)
+        self.wallet.interface.register_callback('disconnected', self.update_callback)
 
         self.detailed_view = config.get('qt_detailed_view', False)
 

lib/interface.py

@@ -266,7 +266,6 @@ class Interface(threading.Thread):
                 self.bytes_received += len(msg)
                 if msg == '': 
                     self.is_connected = False
-                    print "Disconnected."
 
                 while True:
                     s = out.find('\n')
@@ -312,6 +311,7 @@ class Interface(threading.Thread):
         self.daemon = True
         self.loop = loop
         self.config = config
+        self.connect_event = threading.Event()
 
         self.subscriptions = {}
         self.responses = {}
@@ -319,7 +319,6 @@ class Interface(threading.Thread):
 
         self.callbacks = {}
         self.lock = threading.Lock()
-        self.init_interface()
 
 
 
@@ -339,6 +338,7 @@ class Interface(threading.Thread):
             if not servers:
                 raise BaseException('no server available')
 
+        self.connect_event.set()
         if self.is_connected:
             self.send([('server.version', [ELECTRUM_VERSION])])
             self.trigger_callback('connected')
@@ -469,16 +469,21 @@ class Interface(threading.Thread):
         return out
 
 
+    def start(self):
+        threading.Thread.start(self)
+        # wait until connection is established
+        self.connect_event.wait()
 
     def run(self):
         while True:
+            self.init_interface()
+            self.resend_subscriptions()
+
             self.run_tcp() if self.protocol in 'st' else self.run_http()
             self.trigger_callback('disconnected')
             if not self.loop: break
 
             time.sleep(5)
-            self.init_interface()
-            self.resend_subscriptions()
 
 
 

scripts/servers

@@ -5,10 +5,10 @@ import time, Queue
 
 servers = DEFAULT_SERVERS
 interfaces = map ( lambda server: Interface({'server':server} ), servers )
+for i in interfaces: i.start()
 
 for i in interfaces:
     if i.is_connected:
-        i.start()
         i.send([('blockchain.numblocks.subscribe',[])])
         i.status = "timed out"
     else: