| // 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 QUICHE_QUIC_CORE_CHLO_EXTRACTOR_H_ |
| #define QUICHE_QUIC_CORE_CHLO_EXTRACTOR_H_ |
| |
| #include "quiche/quic/core/crypto/crypto_handshake_message.h" |
| #include "quiche/quic/core/quic_packets.h" |
| |
| namespace quic { |
| |
| // A utility for extracting QUIC Client Hello messages from packets, |
| // without needing to spin up a full QuicSession. |
| class QUICHE_EXPORT ChloExtractor { |
| public: |
| class QUICHE_EXPORT 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, |
| ParsedQuicVersion version, |
| const QuicTagVector& create_session_tag_indicators, |
| Delegate* delegate, uint8_t connection_id_length); |
| |
| ChloExtractor(const ChloExtractor&) = delete; |
| ChloExtractor operator=(const ChloExtractor&) = delete; |
| }; |
| |
| } // namespace quic |
| |
| #endif // QUICHE_QUIC_CORE_CHLO_EXTRACTOR_H_ |