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| 1 // Copyright 2015 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 "blimp/net/browser_connection_handler.h" | |
| 6 | |
| 7 #include <utility> | |
| 8 | |
| 9 #include "base/logging.h" | |
| 10 #include "base/macros.h" | |
| 11 #include "blimp/net/blimp_connection.h" | |
| 12 #include "blimp/net/blimp_message_checkpointer.h" | |
| 13 #include "blimp/net/blimp_message_demultiplexer.h" | |
| 14 #include "blimp/net/blimp_message_multiplexer.h" | |
| 15 #include "blimp/net/blimp_message_output_buffer.h" | |
| 16 #include "blimp/net/blimp_message_processor.h" | |
| 17 #include "net/base/net_errors.h" | |
| 18 | |
| 19 namespace blimp { | |
| 20 namespace { | |
| 21 | |
| 22 // Maximum footprint of the output buffer. | |
| 23 // TODO(kmarshall): Use a value that's computed from the platform. | |
| 24 const int kMaxBufferSizeBytes = 32 * 1024 * 1024; | |
| 25 | |
| 26 } // namespace | |
| 27 | |
| 28 BrowserConnectionHandler::BrowserConnectionHandler() | |
| 29 : demultiplexer_(new BlimpMessageDemultiplexer), | |
| 30 output_buffer_(new BlimpMessageOutputBuffer(kMaxBufferSizeBytes)), | |
| 31 multiplexer_(new BlimpMessageMultiplexer(output_buffer_.get())), | |
| 32 checkpointer_(new BlimpMessageCheckpointer(demultiplexer_.get(), | |
| 33 output_buffer_.get(), | |
| 34 output_buffer_.get())) {} | |
| 35 | |
| 36 BrowserConnectionHandler::~BrowserConnectionHandler() {} | |
| 37 | |
| 38 std::unique_ptr<BlimpMessageProcessor> | |
| 39 BrowserConnectionHandler::RegisterFeature( | |
| 40 BlimpMessage::FeatureCase feature_case, | |
| 41 BlimpMessageProcessor* incoming_processor) { | |
| 42 demultiplexer_->AddProcessor(feature_case, incoming_processor); | |
| 43 return multiplexer_->CreateSender(feature_case); | |
| 44 } | |
| 45 | |
| 46 void BrowserConnectionHandler::HandleConnection( | |
| 47 std::unique_ptr<BlimpConnection> connection) { | |
| 48 DCHECK(connection); | |
| 49 VLOG(1) << "HandleConnection " << connection.get(); | |
| 50 | |
| 51 if (connection_) { | |
| 52 DropCurrentConnection(); | |
| 53 } | |
| 54 connection_ = std::move(connection); | |
| 55 | |
| 56 // Hook up message streams to the connection. | |
| 57 connection_->SetIncomingMessageProcessor(checkpointer_.get()); | |
| 58 output_buffer_->SetOutputProcessor( | |
| 59 connection_->GetOutgoingMessageProcessor()); | |
| 60 connection_->AddConnectionErrorObserver(this); | |
| 61 } | |
| 62 | |
| 63 void BrowserConnectionHandler::OnConnectionError(int error) { | |
| 64 DropCurrentConnection(); | |
| 65 } | |
| 66 | |
| 67 void BrowserConnectionHandler::DropCurrentConnection() { | |
| 68 if (!connection_) { | |
| 69 return; | |
| 70 } | |
| 71 | |
| 72 output_buffer_->SetOutputProcessor(nullptr); | |
| 73 connection_.reset(); | |
| 74 } | |
| 75 | |
| 76 } // namespace blimp | |
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