Disconnect and forget signaling configuration on logout.

Signed-off-by: Ivan Sein <ivan@nextcloud.com>

VideoCalls/NCExternalSignalingController.h

@@ -24,5 +24,6 @@ extern NSString * const NCESReceivedParticipantListMessageNotification;
 - (void)leaveRoom:(NSString *)roomId;
 - (void)sendCallMessage:(NCSignalingMessage *)message;
 - (void)requestOfferForSessionId:(NSString *)sessionId andRoomType:(NSString *)roomType;
+- (void)disconnect;
 
 @end

VideoCalls/NCExternalSignalingController.m

@@ -116,6 +116,13 @@ NSString * const NCESReceivedParticipantListMessageNotification = @"NCESReceived
     [self setReconnectionTimer];
 }
 
+- (void)disconnect
+{
+    [self invalidateReconnectionTimer];
+    [_webSocket close];
+    _webSocket = nil;
+}
+
 - (void)setReconnectionTimer
 {
     [self invalidateReconnectionTimer];

VideoCalls/NCSettingsController.m

@@ -102,6 +102,7 @@ NSString * const NCServerCapabilitiesReceivedNotification = @"NCServerCapabiliti
     _ncDeviceIdentifier = nil;
     _ncDeviceSignature = nil;
     _defaultBrowser = nil;
+    _ncSignalingConfiguration = nil;
     
     [_keychain removeItemForKey:kNCServerKey];
     [_keychain removeItemForKey:kNCUserKey];
@@ -156,7 +157,7 @@ NSString * const NCServerCapabilitiesReceivedNotification = @"NCServerCapabiliti
             }
         }];
     }
-    
+    [[NCExternalSignalingController sharedInstance] disconnect];
     [[NCSettingsController sharedInstance] cleanUserAndServerStoredValues];
     if (block) block(nil);
 }