| // Copyright 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_HTTP2_DECODER_PAYLOAD_DECODERS_GOAWAY_PAYLOAD_DECODER_H_ |
| #define QUICHE_HTTP2_DECODER_PAYLOAD_DECODERS_GOAWAY_PAYLOAD_DECODER_H_ |
| |
| // Decodes the payload of a GOAWAY frame. |
| |
| // TODO(jamessynge): Sweep through all payload decoders, changing the names of |
| // the PayloadState enums so that they are really states, and not actions. |
| |
| #include "quiche/http2/decoder/decode_buffer.h" |
| #include "quiche/http2/decoder/decode_status.h" |
| #include "quiche/http2/decoder/frame_decoder_state.h" |
| #include "quiche/http2/http2_structures.h" |
| #include "quiche/common/platform/api/quiche_export.h" |
| |
| namespace http2 { |
| namespace test { |
| class GoAwayPayloadDecoderPeer; |
| } // namespace test |
| |
| class QUICHE_EXPORT GoAwayPayloadDecoder { |
| public: |
| // States during decoding of a GOAWAY frame. |
| enum class PayloadState { |
| // At the start of the GOAWAY frame payload, ready to start decoding the |
| // fixed size fields into goaway_fields_. |
| kStartDecodingFixedFields, |
| |
| // Handle the DecodeStatus returned from starting or resuming the |
| // decoding of Http2GoAwayFields into goaway_fields_. If complete, |
| // calls OnGoAwayStart. |
| kHandleFixedFieldsStatus, |
| |
| // Report the Opaque Data portion of the payload to the listener's |
| // OnGoAwayOpaqueData method, and call OnGoAwayEnd when the end of the |
| // payload is reached. |
| kReadOpaqueData, |
| |
| // The fixed size fields weren't all available when the decoder first |
| // tried to decode them (state kStartDecodingFixedFields); this state |
| // resumes the decoding when ResumeDecodingPayload is called later. |
| kResumeDecodingFixedFields, |
| }; |
| |
| // Starts the decoding of a GOAWAY frame's payload, and completes it if |
| // the entire payload is in the provided decode buffer. |
| DecodeStatus StartDecodingPayload(FrameDecoderState* state, DecodeBuffer* db); |
| |
| // Resumes decoding a GOAWAY frame's payload that has been split across |
| // decode buffers. |
| DecodeStatus ResumeDecodingPayload(FrameDecoderState* state, |
| DecodeBuffer* db); |
| |
| private: |
| friend class test::GoAwayPayloadDecoderPeer; |
| |
| Http2GoAwayFields goaway_fields_; |
| PayloadState payload_state_; |
| }; |
| |
| } // namespace http2 |
| |
| #endif // QUICHE_HTTP2_DECODER_PAYLOAD_DECODERS_GOAWAY_PAYLOAD_DECODER_H_ |