network dialog: include protocol in server address field (#6624)

* network-dialog: include protocol in server field

In this way it is now possible again to use plain server connections
without reverting it automatically to tls connections.

* qt network dialog: hide trailing protocol ":s" in TextEdit

This hides some complexity from casual users, while still allowing
advanced users to set the protocol.

Co-authored-by: SomberNight <somber.night@protonmail.com>

electrum/gui/qt/network_dialog.py

@@ -327,7 +327,7 @@ class NetworkChoiceLayout(object):
         server = net_params.server
         auto_connect = net_params.auto_connect
         if not self.server_e.hasFocus():
-            self.server_e.setText(server.net_addr_str())
+            self.server_e.setText(server.to_friendly_name())
         self.autoconnect_cb.setChecked(auto_connect)
 
         height_str = "%d "%(self.network.get_local_height()) + _('blocks')

electrum/interface.py

@@ -294,6 +294,12 @@ class ServerAddr:
             protocol = PREFERRED_NETWORK_PROTOCOL
         return ServerAddr(host=host, port=port, protocol=protocol)
 
+    def to_friendly_name(self) -> str:
+        # note: this method is closely linked to from_str_with_inference
+        if self.protocol == 's':  # hide trailing ":s"
+            return self.net_addr_str()
+        return str(self)
+
     def __str__(self):
         return '{}:{}'.format(self.net_addr_str(), self.protocol)