mirror of
https://github.com/klzgrad/naiveproxy.git
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131 lines
3.3 KiB
C++
131 lines
3.3 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "net/http/http_response_body_drainer.h"
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#include "base/compiler_specific.h"
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#include "base/logging.h"
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#include "base/memory/ptr_util.h"
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#include "net/base/io_buffer.h"
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#include "net/base/net_errors.h"
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#include "net/http/http_network_session.h"
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#include "net/http/http_stream.h"
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namespace net {
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const int HttpResponseBodyDrainer::kDrainBodyBufferSize;
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const int HttpResponseBodyDrainer::kTimeoutInSeconds;
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HttpResponseBodyDrainer::HttpResponseBodyDrainer(HttpStream* stream)
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: stream_(stream),
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next_state_(STATE_NONE),
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total_read_(0),
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session_(NULL) {}
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HttpResponseBodyDrainer::~HttpResponseBodyDrainer() = default;
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void HttpResponseBodyDrainer::Start(HttpNetworkSession* session) {
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read_buf_ = base::MakeRefCounted<IOBuffer>(kDrainBodyBufferSize);
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next_state_ = STATE_DRAIN_RESPONSE_BODY;
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int rv = DoLoop(OK);
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if (rv == ERR_IO_PENDING) {
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timer_.Start(FROM_HERE,
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base::TimeDelta::FromSeconds(kTimeoutInSeconds),
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this,
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&HttpResponseBodyDrainer::OnTimerFired);
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session_ = session;
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session->AddResponseDrainer(base::WrapUnique(this));
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return;
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}
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Finish(rv);
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}
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int HttpResponseBodyDrainer::DoLoop(int result) {
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DCHECK_NE(next_state_, STATE_NONE);
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int rv = result;
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do {
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State state = next_state_;
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next_state_ = STATE_NONE;
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switch (state) {
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case STATE_DRAIN_RESPONSE_BODY:
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DCHECK_EQ(OK, rv);
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rv = DoDrainResponseBody();
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break;
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case STATE_DRAIN_RESPONSE_BODY_COMPLETE:
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rv = DoDrainResponseBodyComplete(rv);
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break;
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default:
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NOTREACHED() << "bad state";
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rv = ERR_UNEXPECTED;
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break;
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}
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} while (rv != ERR_IO_PENDING && next_state_ != STATE_NONE);
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return rv;
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}
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int HttpResponseBodyDrainer::DoDrainResponseBody() {
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next_state_ = STATE_DRAIN_RESPONSE_BODY_COMPLETE;
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return stream_->ReadResponseBody(
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read_buf_.get(),
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kDrainBodyBufferSize - total_read_,
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base::Bind(&HttpResponseBodyDrainer::OnIOComplete,
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base::Unretained(this)));
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}
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int HttpResponseBodyDrainer::DoDrainResponseBodyComplete(int result) {
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DCHECK_NE(ERR_IO_PENDING, result);
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if (result < 0)
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return result;
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total_read_ += result;
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if (stream_->IsResponseBodyComplete())
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return OK;
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DCHECK_LE(total_read_, kDrainBodyBufferSize);
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if (total_read_ >= kDrainBodyBufferSize)
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return ERR_RESPONSE_BODY_TOO_BIG_TO_DRAIN;
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if (result == 0)
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return ERR_CONNECTION_CLOSED;
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next_state_ = STATE_DRAIN_RESPONSE_BODY;
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return OK;
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}
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void HttpResponseBodyDrainer::OnIOComplete(int result) {
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int rv = DoLoop(result);
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if (rv != ERR_IO_PENDING) {
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timer_.Stop();
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Finish(rv);
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}
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}
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void HttpResponseBodyDrainer::OnTimerFired() {
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Finish(ERR_TIMED_OUT);
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}
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void HttpResponseBodyDrainer::Finish(int result) {
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DCHECK_NE(ERR_IO_PENDING, result);
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if (session_)
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session_->RemoveResponseDrainer(this);
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if (result < 0 || !stream_->CanReuseConnection()) {
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stream_->Close(true /* no keep-alive */);
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} else {
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DCHECK_EQ(OK, result);
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stream_->Close(false /* keep-alive */);
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}
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delete this;
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}
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} // namespace net
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