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// Copyright 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 "net/quic/quic_http_utils.h"
#include <utility>
#include "base/metrics/histogram_macros.h"
#include "net/spdy/spdy_log_util.h"
#include "net/third_party/quic/platform/api/quic_endian.h"
namespace net {
namespace {
enum AltSvcFormat { GOOGLE_FORMAT = 0, IETF_FORMAT = 1, ALTSVC_FORMAT_MAX };
void RecordAltSvcFormat(AltSvcFormat format) {
UMA_HISTOGRAM_ENUMERATION("Net.QuicAltSvcFormat", format, ALTSVC_FORMAT_MAX);
}
} // namespace
spdy::SpdyPriority ConvertRequestPriorityToQuicPriority(
const RequestPriority priority) {
DCHECK_GE(priority, MINIMUM_PRIORITY);
DCHECK_LE(priority, MAXIMUM_PRIORITY);
return static_cast<spdy::SpdyPriority>(HIGHEST - priority);
}
RequestPriority ConvertQuicPriorityToRequestPriority(
spdy::SpdyPriority priority) {
// Handle invalid values gracefully.
return (priority >= 5) ? IDLE
: static_cast<RequestPriority>(HIGHEST - priority);
}
std::unique_ptr<base::Value> QuicRequestNetLogCallback(
quic::QuicStreamId stream_id,
const spdy::SpdyHeaderBlock* headers,
spdy::SpdyPriority priority,
NetLogCaptureMode capture_mode) {
std::unique_ptr<base::DictionaryValue> dict(
static_cast<base::DictionaryValue*>(
SpdyHeaderBlockNetLogCallback(headers, capture_mode).release()));
dict->SetInteger("quic_priority", static_cast<int>(priority));
dict->SetInteger("quic_stream_id", static_cast<int>(stream_id));
return std::move(dict);
}
quic::QuicTransportVersionVector FilterSupportedAltSvcVersions(
const spdy::SpdyAltSvcWireFormat::AlternativeService& quic_alt_svc,
const quic::QuicTransportVersionVector& supported_versions,
bool support_ietf_format_quic_altsvc) {
quic::QuicTransportVersionVector supported_alt_svc_versions;
if (support_ietf_format_quic_altsvc && quic_alt_svc.protocol_id == "hq") {
// Using IETF format for advertising QUIC. In this case,
// |alternative_service_entry.version| will store QUIC version labels.
for (uint32_t quic_version_label : quic_alt_svc.version) {
for (quic::QuicTransportVersion supported : supported_versions) {
quic::QuicVersionLabel supported_version_label_network_order =
QuicVersionToQuicVersionLabel(supported);
if (supported_version_label_network_order == quic_version_label) {
supported_alt_svc_versions.push_back(supported);
RecordAltSvcFormat(IETF_FORMAT);
}
}
}
} else if (quic_alt_svc.protocol_id == "quic") {
for (uint32_t quic_version : quic_alt_svc.version) {
for (quic::QuicTransportVersion supported : supported_versions) {
if (static_cast<uint32_t>(supported) == quic_version) {
supported_alt_svc_versions.push_back(supported);
RecordAltSvcFormat(GOOGLE_FORMAT);
}
}
}
}
return supported_alt_svc_versions;
}
} // namespace net
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