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// Copyright (c) 2012 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 "net/quic/quic_chromium_client_stream.h"
#include "base/callback_helpers.h"
#include "base/location.h"
#include "base/thread_task_runner_handle.h"
#include "net/base/io_buffer.h"
#include "net/base/net_errors.h"
#include "net/quic/quic_chromium_client_session.h"
#include "net/quic/quic_http_utils.h"
#include "net/quic/quic_spdy_session.h"
#include "net/quic/quic_write_blocked_list.h"
#include "net/quic/spdy_utils.h"
namespace net {
QuicChromiumClientStream::QuicChromiumClientStream(
QuicStreamId id,
QuicClientSessionBase* session,
const BoundNetLog& net_log)
: QuicSpdyStream(id, session),
net_log_(net_log),
delegate_(nullptr),
headers_delivered_(false),
session_(session),
can_migrate_(true),
weak_factory_(this) {}
QuicChromiumClientStream::~QuicChromiumClientStream() {
if (delegate_)
delegate_->OnClose(connection_error());
}
void QuicChromiumClientStream::OnStreamHeadersComplete(bool fin,
size_t frame_len) {
QuicSpdyStream::OnStreamHeadersComplete(fin, frame_len);
if (decompressed_headers().empty() && !decompressed_trailers().empty()) {
DCHECK(trailers_decompressed());
// The delegate will read the trailers via a posted task.
NotifyDelegateOfHeadersCompleteLater(response_trailers(), frame_len);
} else {
DCHECK(!headers_delivered_);
SpdyHeaderBlock headers;
SpdyFramer framer(HTTP2);
size_t headers_len = decompressed_headers().length();
const char* header_data = decompressed_headers().data();
if (!framer.ParseHeaderBlockInBuffer(header_data, headers_len, &headers)) {
DLOG(WARNING) << "Invalid headers";
Reset(QUIC_BAD_APPLICATION_PAYLOAD);
return;
}
MarkHeadersConsumed(headers_len);
session_->OnInitialHeadersComplete(id(), headers);
// The delegate will read the headers via a posted task.
NotifyDelegateOfHeadersCompleteLater(headers, frame_len);
}
}
void QuicChromiumClientStream::OnPromiseHeadersComplete(
QuicStreamId promised_id,
size_t frame_len) {
size_t headers_len = decompressed_headers().length();
SpdyHeaderBlock headers;
SpdyFramer framer(HTTP2);
if (!framer.ParseHeaderBlockInBuffer(decompressed_headers().data(),
headers_len, &headers)) {
DLOG(WARNING) << "Invalid headers";
Reset(QUIC_BAD_APPLICATION_PAYLOAD);
return;
}
MarkHeadersConsumed(headers_len);
session_->HandlePromised(id(), promised_id, headers);
}
void QuicChromiumClientStream::OnDataAvailable() {
if (!FinishedReadingHeaders() || !headers_delivered_) {
// Buffer the data in the sequencer until the headers have been read.
return;
}
// The delegate will read the data via a posted task, and
// will be able to, potentially, read all data which has queued up.
NotifyDelegateOfDataAvailableLater();
}
void QuicChromiumClientStream::OnClose() {
if (delegate_) {
delegate_->OnClose(connection_error());
delegate_ = nullptr;
delegate_tasks_.clear();
}
ReliableQuicStream::OnClose();
}
void QuicChromiumClientStream::OnCanWrite() {
ReliableQuicStream::OnCanWrite();
if (!HasBufferedData() && !callback_.is_null()) {
base::ResetAndReturn(&callback_).Run(OK);
}
}
size_t QuicChromiumClientStream::WriteHeaders(
const SpdyHeaderBlock& header_block,
bool fin,
QuicAckListenerInterface* ack_notifier_delegate) {
net_log_.AddEvent(
NetLog::TYPE_QUIC_CHROMIUM_CLIENT_STREAM_SEND_REQUEST_HEADERS,
base::Bind(&QuicRequestNetLogCallback, id(), &header_block,
QuicSpdyStream::priority()));
return QuicSpdyStream::WriteHeaders(header_block, fin, ack_notifier_delegate);
}
SpdyPriority QuicChromiumClientStream::priority() const {
if (delegate_ && delegate_->HasSendHeadersComplete()) {
return QuicSpdyStream::priority();
}
return net::kV3HighestPriority;
}
int QuicChromiumClientStream::WriteStreamData(
base::StringPiece data,
bool fin,
const CompletionCallback& callback) {
// We should not have data buffered.
DCHECK(!HasBufferedData());
// Writes the data, or buffers it.
WriteOrBufferData(data, fin, nullptr);
if (!HasBufferedData()) {
return OK;
}
callback_ = callback;
return ERR_IO_PENDING;
}
void QuicChromiumClientStream::SetDelegate(
QuicChromiumClientStream::Delegate* delegate) {
DCHECK(!(delegate_ && delegate));
delegate_ = delegate;
while (!delegate_tasks_.empty()) {
base::Closure closure = delegate_tasks_.front();
delegate_tasks_.pop_front();
closure.Run();
}
if (delegate == nullptr && sequencer()->IsClosed()) {
OnFinRead();
}
}
void QuicChromiumClientStream::OnError(int error) {
if (delegate_) {
QuicChromiumClientStream::Delegate* delegate = delegate_;
delegate_ = nullptr;
delegate_tasks_.clear();
delegate->OnError(error);
}
}
int QuicChromiumClientStream::Read(IOBuffer* buf, int buf_len) {
if (sequencer()->IsClosed())
return 0; // EOF
if (!HasBytesToRead())
return ERR_IO_PENDING;
iovec iov;
iov.iov_base = buf->data();
iov.iov_len = buf_len;
return Readv(&iov, 1);
}
bool QuicChromiumClientStream::CanWrite(const CompletionCallback& callback) {
bool can_write = session()->connection()->CanWrite(HAS_RETRANSMITTABLE_DATA);
if (!can_write) {
session()->MarkConnectionLevelWriteBlocked(id());
DCHECK(callback_.is_null());
callback_ = callback;
}
return can_write;
}
void QuicChromiumClientStream::NotifyDelegateOfHeadersCompleteLater(
const SpdyHeaderBlock& headers,
size_t frame_len) {
RunOrBuffer(
base::Bind(&QuicChromiumClientStream::NotifyDelegateOfHeadersComplete,
weak_factory_.GetWeakPtr(), headers, frame_len));
}
void QuicChromiumClientStream::NotifyDelegateOfHeadersComplete(
SpdyHeaderBlock headers,
size_t frame_len) {
if (!delegate_)
return;
// Only mark trailers consumed when we are about to notify delegate.
if (headers_delivered_) {
MarkTrailersConsumed(decompressed_trailers().length());
net_log_.AddEvent(
NetLog::TYPE_QUIC_CHROMIUM_CLIENT_STREAM_READ_RESPONSE_TRAILERS,
base::Bind(&SpdyHeaderBlockNetLogCallback, &headers));
} else {
headers_delivered_ = true;
net_log_.AddEvent(
NetLog::TYPE_QUIC_CHROMIUM_CLIENT_STREAM_READ_RESPONSE_HEADERS,
base::Bind(&SpdyHeaderBlockNetLogCallback, &headers));
}
delegate_->OnHeadersAvailable(headers, frame_len);
}
void QuicChromiumClientStream::NotifyDelegateOfDataAvailableLater() {
RunOrBuffer(
base::Bind(&QuicChromiumClientStream::NotifyDelegateOfDataAvailable,
weak_factory_.GetWeakPtr()));
}
void QuicChromiumClientStream::NotifyDelegateOfDataAvailable() {
if (delegate_)
delegate_->OnDataAvailable();
}
void QuicChromiumClientStream::RunOrBuffer(base::Closure closure) {
if (delegate_) {
base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE, closure);
} else {
delegate_tasks_.push_back(closure);
}
}
void QuicChromiumClientStream::DisableConnectionMigration() {
can_migrate_ = false;
}
} // namespace net
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