Refactor iOS packager webSocket handling to resemble Android's packagerconnection

Reviewed By: javache

Differential Revision: D4572607

fbshipit-source-id: b588d6216f7b84aef5a63454d2d8978783412c7b

Libraries/WebSocket/RCTReconnectingWebSocket.h

@@ -0,0 +1,31 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#import <React/RCTDefines.h>
+
+#if RCT_DEV // Only supported in dev mode
+
+@class RCTSRWebSocket;
+
+@protocol RCTWebSocketProtocolDelegate
+
+- (void)webSocket:(RCTSRWebSocket *)webSocket didReceiveMessage:(id)message;
+
+@end
+
+@interface RCTReconnectingWebSocket : NSObject
+
+- (instancetype)initWithURL:(NSURL *)url;
+@property (nonatomic, weak) id<RCTWebSocketProtocolDelegate> delegate;
+- (void)start;
+- (void)stop;
+
+@end
+
+#endif