slightly more robust connection procedure

electrum

@@ -98,7 +98,6 @@ if __name__ == '__main__':
             exit(1)
 
         if not found: exit(1)
-
         gui.main(url)
         wallet.save()
         sys.exit(0)

lib/gui.py

@@ -1140,7 +1140,7 @@ class ElectrumWindow:
         interface = self.wallet.interface
         if self.funds_error:
             text = "Not enough funds"
-        elif interface.is_connected:
+        elif interface and interface.is_connected:
             self.network_button.set_tooltip_text("Connected to %s:%d.\n%d blocks"%(interface.host, interface.port, self.wallet.blocks))
             if self.wallet.blocks == -1:
                 self.status_image.set_from_stock(gtk.STOCK_NO, gtk.ICON_SIZE_MENU)
@@ -1159,7 +1159,7 @@ class ElectrumWindow:
                 if u: text +=  "[%s unconfirmed]"%( format_satoshis(u,True,self.wallet.num_zeros).strip() )
         else:
             self.status_image.set_from_stock(gtk.STOCK_NO, gtk.ICON_SIZE_MENU)
-            self.network_button.set_tooltip_text("Trying to contact %s.\n%d blocks"%(interface.host, self.wallet.blocks))
+            self.network_button.set_tooltip_text("Trying to contact %s.\n%d blocks"%(self.wallet.server, self.wallet.blocks))
             text = "Not connected"
 
         self.status_bar.pop(self.context_id) 

lib/gui_qt.py

@@ -206,7 +206,7 @@ class ElectrumWindow(QMainWindow):
         self.emit(QtCore.SIGNAL('updatesignal'))
 
     def update_wallet(self):
-        if self.wallet.interface.is_connected:
+        if self.wallet.interface and self.wallet.interface.is_connected:
             if self.wallet.blocks == -1:
                 text = "Connecting..."
                 icon = QIcon(":icons/status_disconnected.png")

lib/interface.py

@@ -211,6 +211,8 @@ class TcpStratumInterface(Interface):
 
     def __init__(self, host, port):
         Interface.__init__(self, host, port)
+
+    def init_socket(self):
         self.s = socket.socket( socket.AF_INET, socket.SOCK_STREAM )
         self.s.settimeout(5*60)
         self.s.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
@@ -277,7 +279,28 @@ class WalletSynchronizer(threading.Thread):
         self.daemon = True
         self.wallet = wallet
         self.loop = loop
-        self.start_interface()
+        self.init_interface()
+
+    def init_interface(self):
+        try:
+            host, port, protocol = self.wallet.server.split(':')
+            port = int(port)
+        except:
+            self.wallet.pick_random_server()
+            host, port, protocol = self.wallet.server.split(':')
+            port = int(port)
+
+        #print protocol, host, port
+        if protocol == 't':
+            InterfaceClass = TcpStratumInterface
+        elif protocol == 'h':
+            InterfaceClass = HttpStratumInterface
+        else:
+            print "unknown protocol"
+            InterfaceClass = TcpStratumInterface
+
+        self.interface = InterfaceClass(host, port)
+        self.wallet.interface = self.interface
 
 
     def handle_response(self, r):
@@ -330,27 +353,8 @@ class WalletSynchronizer(threading.Thread):
 
 
     def start_interface(self):
-        try:
-            host, port, protocol = self.wallet.server.split(':')
-            port = int(port)
-        except:
-            self.wallet.pick_random_server()
-            host, port, protocol = self.wallet.server.split(':')
-            port = int(port)
-
-        #print protocol, host, port
-        if protocol == 't':
-            InterfaceClass = TcpStratumInterface
-        elif protocol == 'h':
-            InterfaceClass = HttpStratumInterface
-        else:
-            print "unknown protocol"
-            InterfaceClass = TcpStratumInterface
-
-        self.interface = InterfaceClass(host, port)
+        self.interface.init_socket()
         self.interface.start()
-        self.wallet.interface = self.interface
-
         if self.interface.is_connected:
             self.wallet.start_session(self.interface)
 
@@ -358,6 +362,7 @@ class WalletSynchronizer(threading.Thread):
 
     def run(self):
         import socket, time
+        self.start_interface()
         while True:
             while self.interface.is_connected:
                 new_addresses = self.wallet.synchronize()
@@ -384,6 +389,7 @@ class WalletSynchronizer(threading.Thread):
             self.wallet.gui_callback()
             if self.loop:
                 time.sleep(5)
+                self.init_interface()
                 self.start_interface()
                 continue
             else: