ppapi/utility/websocket/websocket_api.cc

   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 #include "ppapi/utility/websocket/websocket_api.h"
   6
   7 #include "ppapi/c/pp_errors.h"
   8 #include "ppapi/c/pp_macros.h"
   9 #include "ppapi/cpp/instance.h"
  10 #include "ppapi/cpp/module.h"
  11 #include "ppapi/cpp/module_impl.h"
  12 #include "ppapi/cpp/var.h"
  13 #include "ppapi/cpp/websocket.h"
  14 #include "ppapi/utility/completion_callback_factory.h"
  15
  16 #ifdef SendMessage
  17 #undef SendMessage
  18 #endif
  19
  20 namespace pp {
  21
  22 class WebSocketAPI::Implement : public WebSocket {
  23  public:
  24   Implement(Instance* instance, WebSocketAPI* api)
  25       : WebSocket(instance),
  26         api_(api),
  27         callback_factory_(PP_ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
  28   }
  29
  30   virtual ~Implement() {}
  31
  32   int32_t Connect(const Var& url, const Var protocols[],
  33                   uint32_t protocol_count) {
  34     CompletionCallback callback =
  35         callback_factory_.NewOptionalCallback(&Implement::DidConnect);
  36     int32_t result =
  37         WebSocket::Connect(url, protocols, protocol_count, callback);
  38     if (result != PP_OK_COMPLETIONPENDING) {
  39       // In synchronous cases, consumes callback here and invokes callback
  40       // with PP_ERROR_ABORTED instead of result in order to avoid side effects
  41       // in DidConnect. DidConnect ignores this invocation and doesn't call
  42       // any delegate virtual method.
  43       callback.Run(PP_ERROR_ABORTED);
  44     }
  45     return result;
  46   }
  47
  48   int32_t Close(uint16_t code, const Var& reason) {
  49     CompletionCallback callback =
  50         callback_factory_.NewOptionalCallback(&Implement::DidClose);
  51     int32_t result = WebSocket::Close(code, reason, callback);
  52     if (result != PP_OK_COMPLETIONPENDING) {
  53       // In synchronous cases, consumes callback here and invokes callback
  54       // with PP_ERROR_ABORTED instead of result in order to avoid side effects
  55       // in DidConnect. DidConnect ignores this invocation and doesn't call
  56       // any delegate virtual method.
  57       callback.Run(PP_ERROR_ABORTED);
  58     }
  59     return result;
  60   }
  61
  62   void Receive() {
  63     int32_t result;
  64     do {
  65       CompletionCallback callback =
  66           callback_factory_.NewOptionalCallback(&Implement::DidReceive);
  67       result = WebSocket::ReceiveMessage(&receive_message_var_, callback);
  68       if (result != PP_OK_COMPLETIONPENDING)
  69         callback.Run(result);
  70     } while (result == PP_OK);
  71   }
  72
  73   void DidConnect(int32_t result) {
  74     if (result == PP_OK) {
  75       api_->WebSocketDidOpen();
  76       Receive();
  77     } else if (result != PP_ERROR_ABORTED) {
  78       DidClose(result);
  79     }
  80   }
  81
  82   void DidReceive(int32_t result) {
  83     if (result == PP_OK) {
  84       api_->HandleWebSocketMessage(receive_message_var_);
  85       Receive();
  86     } else if (result != PP_ERROR_ABORTED) {
  87       DidClose(result);
  88     }
  89   }
  90
  91   void DidClose(int32_t result) {
  92     if (result == PP_ERROR_ABORTED)
  93       return;
  94     bool was_clean = GetCloseWasClean();
  95     if (!was_clean)
  96       api_->HandleWebSocketError();
  97     api_->WebSocketDidClose(was_clean, GetCloseCode(), GetCloseReason());
  98   }
  99
 100  private:
 101   WebSocketAPI* api_;
 102   CompletionCallbackFactory<Implement> callback_factory_;
 103   Var receive_message_var_;
 104 };
 105
 106 WebSocketAPI::WebSocketAPI(Instance* instance)
 107     : impl_(new Implement(instance, PP_ALLOW_THIS_IN_INITIALIZER_LIST(this))) {
 108 }
 109
 110 WebSocketAPI::~WebSocketAPI() {
 111   delete impl_;
 112 }
 113
 114 int32_t WebSocketAPI::Connect(const Var& url, const Var protocols[],
 115                               uint32_t protocol_count) {
 116   return impl_->Connect(url, protocols, protocol_count);
 117 }
 118
 119 int32_t WebSocketAPI::Close(uint16_t code, const Var& reason) {
 120   return impl_->Close(code, reason);
 121 }
 122
 123 int32_t WebSocketAPI::Send(const Var& data) {
 124   return impl_->SendMessage(data);
 125 }
 126
 127 uint64_t WebSocketAPI::GetBufferedAmount() {
 128   return impl_->GetBufferedAmount();
 129 }
 130
 131 Var WebSocketAPI::GetExtensions() {
 132   return impl_->GetExtensions();
 133 }
 134
 135 Var WebSocketAPI::GetProtocol() {
 136   return impl_->GetProtocol();
 137 }
 138
 139 PP_WebSocketReadyState WebSocketAPI::GetReadyState() {
 140   return impl_->GetReadyState();
 141 }
 142
 143 Var WebSocketAPI::GetURL() {
 144   return impl_->GetURL();
 145 }
 146
 147 }  // namespace pp