Fix container IP selection

Author: mesudip

nginx_proxy/WebServer.py

@@ -79,9 +79,10 @@ def learn_yourself(self):
             self.id=self.container.id
             networks = [a for a in self.container.attrs["NetworkSettings"]["Networks"].keys()]
             for network in networks:
-                net_detail=self.client.networks.get(a)
-                self.networks[net_detail.id]=self.networks[net_detail.name]
-                self.networks[net_detail.name]=self.networks[net_detail.id]
+                print ("Check known network: ",network)
+                net_detail=self.client.networks.get(network)
+                self.networks[net_detail.id]=net_detail.name
+                self.networks[net_detail.name]=net_detail.id
         except (KeyboardInterrupt, SystemExit) as e:
             raise e
         except Exception as e:
@@ -90,8 +91,10 @@ def learn_yourself(self):
                   "\n Is it running in docker environment?",
                   file=sys.stderr)
             print("Falling back to default network", file=sys.stderr)
-            network = self.client.networks.get("frontend")
-            self.networks[network.id] = "frontend"
+            default_network="frontend"
+            network = self.client.networks.get(default_network)
+            self.networks[network.id] = default_network
+            self.networks[default_network] = network.id
 
     def _register_container(self, container: DockerContainer):
         """

nginx_proxy/pre_processors/virtual_host_processor.py

@@ -92,16 +92,11 @@ def host_generator(container: DockerContainer, service_id: str = None, known_net
     unknown = True
     for name, detail in network_settings["Networks"].items():
         c.add_network(detail["NetworkID"])
-        # fix for https://trello.com/c/js37t4ld
-        if detail["Aliases"] is not None: # we might use alias
-            if detail["NetworkID"] in known_networks and unknown:
-                alias = detail["Aliases"][len(detail["Aliases"]) - 1]
-                ip_address = detail["IPAddress"]
-                network = name
-                if ip_address:
-                    break
-        elif detail['NetworkID']:
+        if detail["NetworkID"]  and detail["NetworkID"] in known_networks and unknown:
             ip_address = detail["IPAddress"]
+            #if detail["Aliases"] is not None:  # we might use alias
+            #   alias = detail["Aliases"][len(detail["Aliases"]) - 1]
+            # network = name
             if ip_address:
                 break
     else: