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// Copyright (c) 2016 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_TOOLS_QUIC_CHLO_EXTRACTOR_H_
#define NET_TOOLS_QUIC_CHLO_EXTRACTOR_H_
#include "net/quic/core/crypto/crypto_handshake_message.h"
#include "net/quic/core/quic_packets.h"
namespace net {
// A utility for extracting QUIC Client Hello messages from packets,
// without needs to spin up a full QuicSession.
class ChloExtractor {
public:
class Delegate {
public:
virtual ~Delegate() {}
// Called when a CHLO message is found in the packets.
virtual void OnChlo(QuicTransportVersion version,
QuicConnectionId connection_id,
const CryptoHandshakeMessage& chlo) = 0;
};
// Extracts a CHLO message from |packet| and invokes the OnChlo
// method of |delegate|. Return true if a CHLO message was found,
// and false otherwise. If non-empty,
// |create_session_tag_indicators| contains a list of QUIC tags that
// if found will result in the session being created early, to
// enable support for multi-packet CHLOs.
static bool Extract(const QuicEncryptedPacket& packet,
const ParsedQuicVersionVector& versions,
const QuicTagVector& create_session_tag_indicators,
Delegate* delegate);
ChloExtractor(const ChloExtractor&) = delete;
ChloExtractor operator=(const ChloExtractor&) = delete;
};
} // namespace net
#endif // NET_TOOLS_QUIC_CHLO_EXTRACTOR_H_