Expose didCloseWithCode in RCTReconnectingWebSocket

Summary: Expose didCloseWithCode in RCTReconnectingWebSocket in order to get notified when the reconnecting websocket is closed by the end-point.

Reviewed By: javache

Differential Revision: D5573394

fbshipit-source-id: 78bffeb98c6bf32b059194fc07ffc1f0a7bf4aae

Libraries/WebSocket/RCTReconnectingWebSocket.h

@@ -17,6 +17,8 @@
 
 - (void)webSocket:(RCTSRWebSocket *)webSocket didReceiveMessage:(id)message;
 
+- (void)webSocket:(RCTSRWebSocket *)webSocket didCloseWithCode:(NSInteger)code reason:(NSString *)reason wasClean:(BOOL)wasClean;
+
 @end
 
 @interface RCTReconnectingWebSocket : NSObject

Libraries/WebSocket/RCTReconnectingWebSocket.m

@@ -80,6 +80,7 @@
 
 - (void)webSocket:(RCTSRWebSocket *)webSocket didCloseWithCode:(NSInteger)code reason:(NSString *)reason wasClean:(BOOL)wasClean
 {
+  [self.delegate webSocket:webSocket didCloseWithCode:code reason:reason wasClean:wasClean];
   [self reconnect];
 }
 

Libraries/WebSocket/RCTWebSocketObserver.m

@@ -61,6 +61,10 @@
   }
 }
 
+- (void)webSocket:(RCTSRWebSocket *)webSocket didCloseWithCode:(NSInteger)code reason:(NSString *)reason wasClean:(BOOL)wasClean
+{
+}
+
 @end
 
 #endif

React/DevSupport/RCTPackagerConnection.m

@@ -133,6 +133,10 @@ static BOOL isSupportedVersion(NSNumber *version)
   }
 }
 
+- (void)webSocket:(RCTSRWebSocket *)webSocket didCloseWithCode:(NSInteger)code reason:(NSString *)reason wasClean:(BOOL)wasClean
+{
+}
+
 @end
 
 #endif