chromium/net/http/alternative_service.h

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef NET_HTTP_ALTERNATIVE_SERVICE_H_
#define NET_HTTP_ALTERNATIVE_SERVICE_H_

#include <stdint.h>

#include <algorithm>
#include <ostream>
#include <string>

#include "base/time/time.h"
#include "net/base/host_port_pair.h"
#include "net/base/net_export.h"
#include "net/http/alternate_protocol_usage.h"
#include "net/quic/quic_http_utils.h"
#include "net/socket/next_proto.h"
#include "net/third_party/quiche/src/quiche/quic/core/quic_versions.h"
#include "net/third_party/quiche/src/quiche/spdy/core/spdy_protocol.h"

namespace net {

// Log a histogram to reflect |usage|.
NET_EXPORT void HistogramAlternateProtocolUsage(AlternateProtocolUsage usage,
                                                bool is_google_host);

enum BrokenAlternateProtocolLocation { … };

// Log a histogram to reflect |location|.
NET_EXPORT void HistogramBrokenAlternateProtocolLocation(
    BrokenAlternateProtocolLocation location);

// Returns true if |protocol| is a valid protocol.
NET_EXPORT bool IsAlternateProtocolValid(NextProto protocol);

// Returns true if |protocol| is enabled, based on |is_http2_enabled|
// and |is_quic_enabled|..
NET_EXPORT bool IsProtocolEnabled(NextProto protocol,
                                  bool is_http2_enabled,
                                  bool is_quic_enabled);

// (protocol, host, port) triple as defined in
// https://tools.ietf.org/id/draft-ietf-httpbis-alt-svc-06.html
//
// TODO(mmenke):  Seems like most of this stuff should be de-inlined.
struct NET_EXPORT AlternativeService { … };

NET_EXPORT_PRIVATE std::ostream& operator<<(
    std::ostream& os,
    const AlternativeService& alternative_service);

class NET_EXPORT_PRIVATE AlternativeServiceInfo { … };

AlternativeServiceInfoVector;

NET_EXPORT_PRIVATE AlternativeServiceInfoVector ProcessAlternativeServices(
    const spdy::SpdyAltSvcWireFormat::AlternativeServiceVector&
        alternative_service_vector,
    bool is_http2_enabled,
    bool is_quic_enabled,
    const quic::ParsedQuicVersionVector& supported_quic_versions);

}  // namespace net

#endif  // NET_HTTP_ALTERNATIVE_SERVICE_H_