blob: 4c7d099779adbbca1575f97f621a28848af8493b [file] [log] [blame]
// 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/spdy/chromium/buffered_spdy_framer.h"
#include <algorithm>
#include <utility>
#include "base/logging.h"
#include "base/strings/string_util.h"
#include "net/third_party/spdy/platform/api/spdy_estimate_memory_usage.h"
namespace net {
namespace {
// GOAWAY frame debug data is only buffered up to this many bytes.
size_t kGoAwayDebugDataMaxSize = 1024;
} // namespace
BufferedSpdyFramer::BufferedSpdyFramer(uint32_t max_header_list_size,
const NetLogWithSource& net_log)
: spdy_framer_(SpdyFramer::ENABLE_COMPRESSION),
visitor_(NULL),
frames_received_(0),
max_header_list_size_(max_header_list_size),
net_log_(net_log) {
// Do not bother decoding response header payload above the limit.
deframer_.GetHpackDecoder()->set_max_decode_buffer_size_bytes(
max_header_list_size_);
}
BufferedSpdyFramer::~BufferedSpdyFramer() = default;
void BufferedSpdyFramer::set_visitor(
BufferedSpdyFramerVisitorInterface* visitor) {
visitor_ = visitor;
deframer_.set_visitor(this);
}
void BufferedSpdyFramer::set_debug_visitor(
SpdyFramerDebugVisitorInterface* debug_visitor) {
spdy_framer_.set_debug_visitor(debug_visitor);
deframer_.set_debug_visitor(debug_visitor);
}
void BufferedSpdyFramer::OnError(
Http2DecoderAdapter::SpdyFramerError spdy_framer_error) {
visitor_->OnError(spdy_framer_error);
}
void BufferedSpdyFramer::OnHeaders(SpdyStreamId stream_id,
bool has_priority,
int weight,
SpdyStreamId parent_stream_id,
bool exclusive,
bool fin,
bool end) {
frames_received_++;
DCHECK(!control_frame_fields_.get());
control_frame_fields_ = std::make_unique<ControlFrameFields>();
control_frame_fields_->type = SpdyFrameType::HEADERS;
control_frame_fields_->stream_id = stream_id;
control_frame_fields_->has_priority = has_priority;
if (control_frame_fields_->has_priority) {
control_frame_fields_->weight = weight;
control_frame_fields_->parent_stream_id = parent_stream_id;
control_frame_fields_->exclusive = exclusive;
}
control_frame_fields_->fin = fin;
}
void BufferedSpdyFramer::OnDataFrameHeader(SpdyStreamId stream_id,
size_t length,
bool fin) {
frames_received_++;
visitor_->OnDataFrameHeader(stream_id, length, fin);
}
void BufferedSpdyFramer::OnStreamFrameData(SpdyStreamId stream_id,
const char* data,
size_t len) {
visitor_->OnStreamFrameData(stream_id, data, len);
}
void BufferedSpdyFramer::OnStreamEnd(SpdyStreamId stream_id) {
visitor_->OnStreamEnd(stream_id);
}
void BufferedSpdyFramer::OnStreamPadLength(SpdyStreamId stream_id,
size_t value) {
// Deliver the stream pad length byte for flow control handling.
visitor_->OnStreamPadding(stream_id, 1);
}
void BufferedSpdyFramer::OnStreamPadding(SpdyStreamId stream_id, size_t len) {
visitor_->OnStreamPadding(stream_id, len);
}
SpdyHeadersHandlerInterface* BufferedSpdyFramer::OnHeaderFrameStart(
SpdyStreamId stream_id) {
coalescer_ =
std::make_unique<HeaderCoalescer>(max_header_list_size_, net_log_);
return coalescer_.get();
}
void BufferedSpdyFramer::OnHeaderFrameEnd(SpdyStreamId stream_id) {
if (coalescer_->error_seen()) {
visitor_->OnStreamError(stream_id,
"Could not parse Spdy Control Frame Header.");
control_frame_fields_.reset();
return;
}
DCHECK(control_frame_fields_.get());
switch (control_frame_fields_->type) {
case SpdyFrameType::HEADERS:
visitor_->OnHeaders(
control_frame_fields_->stream_id, control_frame_fields_->has_priority,
control_frame_fields_->weight,
control_frame_fields_->parent_stream_id,
control_frame_fields_->exclusive, control_frame_fields_->fin,
coalescer_->release_headers());
break;
case SpdyFrameType::PUSH_PROMISE:
visitor_->OnPushPromise(control_frame_fields_->stream_id,
control_frame_fields_->promised_stream_id,
coalescer_->release_headers());
break;
default:
DCHECK(false) << "Unexpect control frame type: "
<< control_frame_fields_->type;
break;
}
control_frame_fields_.reset(NULL);
}
void BufferedSpdyFramer::OnSettings() {
visitor_->OnSettings();
}
void BufferedSpdyFramer::OnSetting(SpdySettingsId id, uint32_t value) {
visitor_->OnSetting(id, value);
}
void BufferedSpdyFramer::OnSettingsAck() {
visitor_->OnSettingsAck();
}
void BufferedSpdyFramer::OnSettingsEnd() {
visitor_->OnSettingsEnd();
}
void BufferedSpdyFramer::OnPing(SpdyPingId unique_id, bool is_ack) {
visitor_->OnPing(unique_id, is_ack);
}
void BufferedSpdyFramer::OnRstStream(SpdyStreamId stream_id,
SpdyErrorCode error_code) {
visitor_->OnRstStream(stream_id, error_code);
}
void BufferedSpdyFramer::OnGoAway(SpdyStreamId last_accepted_stream_id,
SpdyErrorCode error_code) {
DCHECK(!goaway_fields_);
goaway_fields_ = std::make_unique<GoAwayFields>();
goaway_fields_->last_accepted_stream_id = last_accepted_stream_id;
goaway_fields_->error_code = error_code;
}
bool BufferedSpdyFramer::OnGoAwayFrameData(const char* goaway_data,
size_t len) {
if (len > 0) {
if (goaway_fields_->debug_data.size() < kGoAwayDebugDataMaxSize) {
goaway_fields_->debug_data.append(
goaway_data, std::min(len, kGoAwayDebugDataMaxSize -
goaway_fields_->debug_data.size()));
}
return true;
}
visitor_->OnGoAway(goaway_fields_->last_accepted_stream_id,
goaway_fields_->error_code, goaway_fields_->debug_data);
goaway_fields_.reset();
return true;
}
void BufferedSpdyFramer::OnWindowUpdate(SpdyStreamId stream_id,
int delta_window_size) {
visitor_->OnWindowUpdate(stream_id, delta_window_size);
}
void BufferedSpdyFramer::OnPushPromise(SpdyStreamId stream_id,
SpdyStreamId promised_stream_id,
bool end) {
frames_received_++;
DCHECK(!control_frame_fields_.get());
control_frame_fields_ = std::make_unique<ControlFrameFields>();
control_frame_fields_->type = SpdyFrameType::PUSH_PROMISE;
control_frame_fields_->stream_id = stream_id;
control_frame_fields_->promised_stream_id = promised_stream_id;
}
void BufferedSpdyFramer::OnAltSvc(
SpdyStreamId stream_id,
SpdyStringPiece origin,
const SpdyAltSvcWireFormat::AlternativeServiceVector& altsvc_vector) {
visitor_->OnAltSvc(stream_id, origin, altsvc_vector);
}
void BufferedSpdyFramer::OnContinuation(SpdyStreamId stream_id, bool end) {
}
bool BufferedSpdyFramer::OnUnknownFrame(SpdyStreamId stream_id,
uint8_t frame_type) {
return visitor_->OnUnknownFrame(stream_id, frame_type);
}
size_t BufferedSpdyFramer::ProcessInput(const char* data, size_t len) {
return deframer_.ProcessInput(data, len);
}
void BufferedSpdyFramer::UpdateHeaderDecoderTableSize(uint32_t value) {
deframer_.GetHpackDecoder()->ApplyHeaderTableSizeSetting(value);
}
void BufferedSpdyFramer::Reset() {
deframer_.Reset();
}
Http2DecoderAdapter::SpdyFramerError BufferedSpdyFramer::spdy_framer_error()
const {
return deframer_.spdy_framer_error();
}
Http2DecoderAdapter::SpdyState BufferedSpdyFramer::state() const {
return deframer_.state();
}
bool BufferedSpdyFramer::MessageFullyRead() {
return state() == Http2DecoderAdapter::SPDY_FRAME_COMPLETE;
}
bool BufferedSpdyFramer::HasError() {
return deframer_.HasError();
}
// TODO(jgraettinger): Eliminate uses of this method (prefer
// SpdyRstStreamIR).
std::unique_ptr<SpdySerializedFrame> BufferedSpdyFramer::CreateRstStream(
SpdyStreamId stream_id,
SpdyErrorCode error_code) const {
SpdyRstStreamIR rst_ir(stream_id, error_code);
return std::make_unique<SpdySerializedFrame>(
spdy_framer_.SerializeRstStream(rst_ir));
}
// TODO(jgraettinger): Eliminate uses of this method (prefer
// SpdySettingsIR).
std::unique_ptr<SpdySerializedFrame> BufferedSpdyFramer::CreateSettings(
const SettingsMap& values) const {
SpdySettingsIR settings_ir;
for (SettingsMap::const_iterator it = values.begin(); it != values.end();
++it) {
settings_ir.AddSetting(it->first, it->second);
}
return std::make_unique<SpdySerializedFrame>(
spdy_framer_.SerializeSettings(settings_ir));
}
// TODO(jgraettinger): Eliminate uses of this method (prefer SpdyPingIR).
std::unique_ptr<SpdySerializedFrame> BufferedSpdyFramer::CreatePingFrame(
SpdyPingId unique_id,
bool is_ack) const {
SpdyPingIR ping_ir(unique_id);
ping_ir.set_is_ack(is_ack);
return std::make_unique<SpdySerializedFrame>(
spdy_framer_.SerializePing(ping_ir));
}
// TODO(jgraettinger): Eliminate uses of this method (prefer
// SpdyWindowUpdateIR).
std::unique_ptr<SpdySerializedFrame> BufferedSpdyFramer::CreateWindowUpdate(
SpdyStreamId stream_id,
uint32_t delta_window_size) const {
SpdyWindowUpdateIR update_ir(stream_id, delta_window_size);
return std::make_unique<SpdySerializedFrame>(
spdy_framer_.SerializeWindowUpdate(update_ir));
}
// TODO(jgraettinger): Eliminate uses of this method (prefer SpdyDataIR).
std::unique_ptr<SpdySerializedFrame> BufferedSpdyFramer::CreateDataFrame(
SpdyStreamId stream_id,
const char* data,
uint32_t len,
SpdyDataFlags flags) {
SpdyDataIR data_ir(stream_id, SpdyStringPiece(data, len));
data_ir.set_fin((flags & DATA_FLAG_FIN) != 0);
return std::make_unique<SpdySerializedFrame>(
spdy_framer_.SerializeData(data_ir));
}
// TODO(jgraettinger): Eliminate uses of this method (prefer
// SpdyPriorityIR).
std::unique_ptr<SpdySerializedFrame> BufferedSpdyFramer::CreatePriority(
SpdyStreamId stream_id,
SpdyStreamId dependency_id,
int weight,
bool exclusive) const {
SpdyPriorityIR priority_ir(stream_id, dependency_id, weight, exclusive);
return std::make_unique<SpdySerializedFrame>(
spdy_framer_.SerializePriority(priority_ir));
}
size_t BufferedSpdyFramer::EstimateMemoryUsage() const {
return SpdyEstimateMemoryUsage(spdy_framer_) +
SpdyEstimateMemoryUsage(deframer_) +
SpdyEstimateMemoryUsage(coalescer_) +
SpdyEstimateMemoryUsage(control_frame_fields_) +
SpdyEstimateMemoryUsage(goaway_fields_);
}
size_t BufferedSpdyFramer::GoAwayFields::EstimateMemoryUsage() const {
return SpdyEstimateMemoryUsage(debug_data);
}
} // namespace net