Fixing #253 . The problem seems to be caused by the page structure. The page header, containing the js code required for the websocket communication was created at first user connection. The subsequent connection were using an already created page with a wrong client ip/host. Now, the js code gets updated each connection/page-reload with the correct ip/host.

Author: dddomodossola

editor/prototypes.py

@@ -3,7 +3,7 @@
 
 #main program code prototype
 proto_code_program = """
-# -*- coding: utf8 -*-
+# -*- coding: utf-8 -*-
 
 import remi.gui as gui
 from remi.gui import *

examples/minefield_app.py

@@ -20,13 +20,13 @@
 from remi import start, App
 
 
-class Cell(gui.Widget):
+class Cell(gui.TableItem):
     """
     Represent a cell in the minefield map
     """
 
     def __init__(self, width, height, x, y, game):
-        super(Cell, self).__init__()
+        super(Cell, self).__init__('')
         self.set_size(width, height)
         self.x = x
         self.y = y
@@ -75,7 +75,7 @@ def set_icon(self):
                 self.style['background-image'] = "url('/my_resources:mine.png')"
             else:
                 if self.nearest_mine > 0:
-                    self.add_child('nearestbomb', "%s" % self.nearest_mine)
+                    self.set_text(str(self.nearest_mine))
                 else:
                     self.style['background-color'] = 'rgb(200,255,100)'
             return
@@ -167,7 +167,16 @@ def new_game(self, widget):
         self.mine_table = gui.Table(margin='0px auto')#900, 450
         self.mine_matrix = self.build_mine_matrix(8, 8, 5)
         self.mine_table.empty()
-        self.mine_table.append_from_list(self.mine_matrix, False)
+
+
+        for x in range(0, len(self.mine_matrix[0])):
+            row = gui.TableRow()
+            for y in range(0, len(self.mine_matrix)):
+                row.append(self.mine_matrix[y][x])
+                self.mine_matrix[y][x].onclick.connect(self.mine_matrix[y][x].check_mine)
+            self.mine_table.append(row)
+
+        #self.mine_table.append_from_list(self.mine_matrix, False)
         self.main_container.append(self.mine_table, key="mine_table")
         self.check_if_win()
         self.set_root_widget(self.main_container)

examples/widgets_overview_app.py

@@ -326,4 +326,4 @@ def on_close(self):
     # optional parameters
     # start(MyApp,address='127.0.0.1', port=8081, multiple_instance=False,enable_file_cache=True, update_interval=0.1, start_browser=True)
     import ssl
-    start(MyApp, debug=True, address='0.0.0.0', port=0, start_browser=True, multiple_instance=False)
+    start(MyApp, debug=True, address='0.0.0.0', port=8081, start_browser=True, multiple_instance=False)

remi/gui.py

@@ -966,13 +966,17 @@ def repr(self, changed_widgets=None):
 
 
 class HEAD(Tag):
-    def __init__(self, title, net_interface_ip, pending_messages_queue_length, websocket_timeout_timer_ms, *args, **kwargs):
+    def __init__(self, title, *args, **kwargs):
         super(HEAD, self).__init__(*args, _type='head', **kwargs)
         self.add_child('meta', 
                 """<meta content='text/html;charset=utf-8' http-equiv='Content-Type'>
                 <meta content='utf-8' http-equiv='encoding'>
                 <meta name="viewport" content="width=device-width, initial-scale=1.0">""")
 
+        self._classes = []
+        self.set_title(title)
+
+    def set_internal_js(self, net_interface_ip, pending_messages_queue_length, websocket_timeout_timer_ms):
         self.add_child('internal_js',
                 """
                 <script>
@@ -1223,8 +1227,6 @@ def __init__(self, title, net_interface_ip, pending_messages_queue_length, webso
                 </script>""" % {'host':net_interface_ip, 
                                 'max_pending_messages':pending_messages_queue_length, 
                                 'messaging_timeout':websocket_timeout_timer_ms})
-        self._classes = []
-        self.set_title(title)
 
     def set_title(self, title):
         self.add_child('title', "<title>%s</title>" % title)

remi/server.py

@@ -343,16 +343,11 @@ def _instance(self):
 
         #if the client instance doesn't exist
         if not(self.session in clients):
-            net_interface_ip = self.headers.get('Host', "%s:%s"%(self.connection.getsockname()[0],self.server.server_address[1]))
-
-            websocket_timeout_timer_ms = str(self.server.websocket_timeout_timer_ms)
-            pending_messages_queue_length = str(self.server.pending_messages_queue_length)
             self.update_interval = self.server.update_interval
 
             from remi import gui
 
-            head = gui.HEAD(self.server.title, 
-                net_interface_ip, pending_messages_queue_length, websocket_timeout_timer_ms)
+            head = gui.HEAD(self.server.title)
             # use the default css, but append a version based on its hash, to stop browser caching
             head.add_child('internal_css', "<link href='/res:style.css' rel='stylesheet' />\n")
 
@@ -395,6 +390,11 @@ def _instance(self):
             self._need_update_flag = client._need_update_flag
             if hasattr(client, '_update_thread'):
                 self._update_thread = client._update_thread
+                
+        net_interface_ip = self.headers.get('Host', "%s:%s"%(self.connection.getsockname()[0],self.server.server_address[1]))
+        websocket_timeout_timer_ms = str(self.server.websocket_timeout_timer_ms)
+        pending_messages_queue_length = str(self.server.pending_messages_queue_length)
+        self.page.children['head'].set_internal_js(net_interface_ip, pending_messages_queue_length, websocket_timeout_timer_ms)
 
     def main(self, *_):
         """ Subclasses of App class *must* declare a main function