| // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "content/browser/loader/stream_resource_handler.h" |
| |
| #include "base/guid.h" |
| #include "base/logging.h" |
| #include "content/browser/streams/stream.h" |
| #include "content/browser/streams/stream_registry.h" |
| #include "content/public/browser/resource_controller.h" |
| #include "net/base/io_buffer.h" |
| #include "net/url_request/url_request_status.h" |
| #include "url/url_constants.h" |
| |
| namespace content { |
| |
| StreamResourceHandler::StreamResourceHandler(net::URLRequest* request, |
| StreamRegistry* registry, |
| const GURL& origin) |
| : ResourceHandler(request), |
| read_buffer_(NULL) { |
| // TODO(tyoshino): Find a way to share this with the blob URL creation in |
| // WebKit. |
| GURL url(std::string(url::kBlobScheme) + ":" + origin.spec() + |
| base::GenerateGUID()); |
| stream_ = new Stream(registry, this, url); |
| } |
| |
| StreamResourceHandler::~StreamResourceHandler() { |
| stream_->RemoveWriteObserver(this); |
| } |
| |
| bool StreamResourceHandler::OnUploadProgress(uint64 position, |
| uint64 size) { |
| return true; |
| } |
| |
| bool StreamResourceHandler::OnRequestRedirected(const GURL& url, |
| ResourceResponse* resp, |
| bool* defer) { |
| return true; |
| } |
| |
| bool StreamResourceHandler::OnResponseStarted(ResourceResponse* resp, |
| bool* defer) { |
| return true; |
| } |
| |
| bool StreamResourceHandler::OnWillStart(const GURL& url, bool* defer) { |
| return true; |
| } |
| |
| bool StreamResourceHandler::OnBeforeNetworkStart(const GURL& url, bool* defer) { |
| return true; |
| } |
| |
| bool StreamResourceHandler::OnWillRead(scoped_refptr<net::IOBuffer>* buf, |
| int* buf_size, |
| int min_size) { |
| static const int kReadBufSize = 32768; |
| |
| DCHECK(buf && buf_size); |
| if (!read_buffer_.get()) |
| read_buffer_ = new net::IOBuffer(kReadBufSize); |
| *buf = read_buffer_.get(); |
| *buf_size = kReadBufSize; |
| |
| return true; |
| } |
| |
| bool StreamResourceHandler::OnReadCompleted(int bytes_read, bool* defer) { |
| if (!bytes_read) |
| return true; |
| |
| // We have more data to read. |
| DCHECK(read_buffer_.get()); |
| |
| // Release the ownership of the buffer, and store a reference |
| // to it. A new one will be allocated in OnWillRead(). |
| scoped_refptr<net::IOBuffer> buffer; |
| read_buffer_.swap(buffer); |
| stream_->AddData(buffer, bytes_read); |
| |
| if (!stream_->can_add_data()) |
| *defer = true; |
| |
| return true; |
| } |
| |
| void StreamResourceHandler::OnResponseCompleted( |
| const net::URLRequestStatus& status, |
| const std::string& sec_info, |
| bool* defer) { |
| stream_->Finalize(); |
| } |
| |
| void StreamResourceHandler::OnDataDownloaded(int bytes_downloaded) { |
| NOTREACHED(); |
| } |
| |
| void StreamResourceHandler::OnSpaceAvailable(Stream* stream) { |
| controller()->Resume(); |
| } |
| |
| void StreamResourceHandler::OnClose(Stream* stream) { |
| controller()->Cancel(); |
| } |
| |
| } // namespace content |