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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef PPAPI_THUNK_WEBSOCKET_API_H_
      6 #define PPAPI_THUNK_WEBSOCKET_API_H_
      7 
      8 #include "base/memory/ref_counted.h"
      9 #include "ppapi/c/pp_completion_callback.h"
     10 #include "ppapi/c/ppb_websocket.h"
     11 #include "ppapi/thunk/ppapi_thunk_export.h"
     12 
     13 namespace ppapi {
     14 
     15 class TrackedCallback;
     16 
     17 namespace thunk {
     18 
     19 // Some arguments and attributes are based on The WebSocket Protocol and The
     20 // WebSocket API. See also following official specifications.
     21 //  - The WebSocket Protocol http://tools.ietf.org/html/rfc6455
     22 //  - The WebSocket API      http://dev.w3.org/html5/websockets/
     23 class PPAPI_THUNK_EXPORT PPB_WebSocket_API {
     24  public:
     25   virtual ~PPB_WebSocket_API() {}
     26 
     27   // Connects to the specified WebSocket server with |protocols| argument
     28   // defined by the WebSocket API. Returns an int32_t error code from
     29   // pp_errors.h.
     30   virtual int32_t Connect(const PP_Var& url,
     31                           const PP_Var protocols[],
     32                           uint32_t protocol_count,
     33                           scoped_refptr<TrackedCallback> callback) = 0;
     34 
     35   // Closes the established connection with specified |code| and |reason|.
     36   // Returns an int32_t error code from pp_errors.h.
     37   virtual int32_t Close(uint16_t code,
     38                         const PP_Var& reason,
     39                         scoped_refptr<TrackedCallback> callback) = 0;
     40 
     41   // Receives a message from the WebSocket server. Caller must keep specified
     42   // |message| object as valid until completion callback is invoked. Returns an
     43   // int32_t error code from pp_errors.h.
     44   virtual int32_t ReceiveMessage(PP_Var* message,
     45                                  scoped_refptr<TrackedCallback> callback) = 0;
     46 
     47   // Sends a message to the WebSocket server. Returns an int32_t error code
     48   // from pp_errors.h.
     49   virtual int32_t SendMessage(const PP_Var& message) = 0;
     50 
     51   // Returns the bufferedAmount attribute of The WebSocket API.
     52   virtual uint64_t GetBufferedAmount() = 0;
     53 
     54   // Returns the CloseEvent code attribute of The WebSocket API. Returned code
     55   // is valid if the connection is already closed and wasClean attribute is
     56   // true.
     57   virtual uint16_t GetCloseCode() = 0;
     58 
     59   // Returns the CloseEvent reason attribute of The WebSocket API. Returned
     60   // code is valid if the connection is already closed and wasClean attribute
     61   // is true.
     62   virtual PP_Var GetCloseReason() = 0;
     63 
     64   // Returns the CloseEvent wasClean attribute of The WebSocket API. Returned
     65   // code is valid if the connection is already closed.
     66   virtual PP_Bool GetCloseWasClean() = 0;
     67 
     68   // Returns the extensions attribute of The WebSocket API.
     69   virtual PP_Var GetExtensions() = 0;
     70 
     71   // Returns the protocol attribute of The WebSocket API.
     72   virtual PP_Var GetProtocol() = 0;
     73 
     74   // Returns the readState attribute of The WebSocket API.
     75   virtual PP_WebSocketReadyState GetReadyState() = 0;
     76 
     77   // Returns the url attribute of The WebSocket API.
     78   virtual PP_Var GetURL() = 0;
     79 };
     80 
     81 }  // namespace thunk
     82 }  // namespace ppapi
     83 
     84 #endif  // PPAPI_THUNK_WEBSOCKET_API_H_
     85