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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.
#ifndef NET_SOCKET_NEXT_PROTO_H_
#define NET_SOCKET_NEXT_PROTO_H_
#include <vector>
#include "net/base/net_export.h"
namespace net {
// Next Protocol Negotiation (NPN), if successful, results in agreement on an
// application-level string that specifies the application level protocol to
// use over the TLS connection. NextProto enumerates the application level
// protocols that we recognize. Do not change or reuse values, because they
// are used to collect statistics on UMA. Also, values must be in [0,499),
// because of the way TLS protocol negotiation extension information is added to
// UMA histogram.
const int kProtoSPDYHistogramOffset = 100;
enum NextProto {
kProtoUnknown = 0,
kProtoHTTP11 = 1,
kProtoMinimumVersion = kProtoHTTP11,
kProtoSPDY31 = 102,
kProtoSPDYMinimumVersion = kProtoSPDY31,
// kProtoHTTP2_14 = 103, // HTTP/2 draft-14
// kProtoHTTP2_15 = 104, // HTTP/2 draft-15
// kProtoHTTP2_16 = 105, // HTTP/2 draft-16
// kProtoHTTP2_17 = 106, // HTTP/2 draft-17
kProtoHTTP2 = 107, // HTTP/2, see https://tools.ietf.org/html/rfc7540.
kProtoSPDYMaximumVersion = kProtoHTTP2,
kProtoQUIC1SPDY3 = 200,
kProtoMaximumVersion = kProtoQUIC1SPDY3,
};
// List of protocols to use for NPN, used for configuring HttpNetworkSessions.
typedef std::vector<NextProto> NextProtoVector;
// Convenience functions to create NextProtoVector.
// Default values, which are subject to change over time.
NET_EXPORT NextProtoVector NextProtosDefaults();
// Enable SPDY/3.1 and QUIC, but not HTTP/2.
NET_EXPORT NextProtoVector NextProtosSpdy31();
// Control SPDY/3.1 and HTTP/2 separately.
NET_EXPORT NextProtoVector NextProtosWithSpdyAndQuic(bool spdy_enabled,
bool quic_enabled);
// Returns true if |next_proto| is a version of SPDY or HTTP/2.
bool NextProtoIsSPDY(NextProto next_proto);
// Remove HTTP/2 from |next_protos|.
NET_EXPORT void DisableHTTP2(NextProtoVector* next_protos);
} // namespace net
#endif // NET_SOCKET_NEXT_PROTO_H_
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