Enable persistent socket between packager and bridge (1/N).

Reviewed By: javache

Differential Revision: D2920590

fb-gh-sync-id: 120d812d1e9bcb79b186d3e41e8f7e153ca34f8b
shipit-source-id: 120d812d1e9bcb79b186d3e41e8f7e153ca34f8b

React/Base/RCTWebSocketProxy.h

@@ -0,0 +1,26 @@
+/**
+ * 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 "RCTDefines.h"
+
+#if RCT_DEV // Only supported in dev mode
+
+#import "RCTWebSocketProxyDelegate.h"
+
+@protocol RCTWebSocketProxy
+
++ (instancetype)sharedInstance;
+
+- (void)setDelegate:(id<RCTWebSocketProxyDelegate>)delegate forURL:(NSURL *)url;
+
+- (instancetype) init   __attribute__((unavailable("init not available, call sharedInstance instead")));
+
+@end
+
+#endif

React/Base/RCTWebSocketProxyDelegate.h

@@ -0,0 +1,20 @@
+/**
+ * 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 "RCTDefines.h"
+
+#if RCT_DEV // Only supported in dev mode
+
+@protocol RCTWebSocketProxy;
+
+@protocol RCTWebSocketProxyDelegate
+- (void)socketProxy:(id<RCTWebSocketProxy>)sender didReceiveMessage:(NSDictionary<NSString *, id> *)message;
+@end
+
+#endif