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67 lines
2.4 KiB
C
67 lines
2.4 KiB
C
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// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_HTTP2_DECODER_PAYLOAD_DECODERS_GOAWAY_PAYLOAD_DECODER_H_
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#define NET_HTTP2_DECODER_PAYLOAD_DECODERS_GOAWAY_PAYLOAD_DECODER_H_
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// Decodes the payload of a GOAWAY frame.
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// TODO(jamessynge): Sweep through all payload decoders, changing the names of
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// the PayloadState enums so that they are really states, and not actions.
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#include "net/http2/decoder/decode_buffer.h"
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#include "net/http2/decoder/decode_status.h"
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#include "net/http2/decoder/frame_decoder_state.h"
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#include "net/http2/http2_structures.h"
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#include "net/http2/platform/api/http2_export.h"
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namespace net {
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namespace test {
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class GoAwayPayloadDecoderPeer;
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} // namespace test
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class HTTP2_EXPORT_PRIVATE GoAwayPayloadDecoder {
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public:
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// States during decoding of a GOAWAY frame.
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enum class PayloadState {
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// At the start of the GOAWAY frame payload, ready to start decoding the
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// fixed size fields into goaway_fields_.
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kStartDecodingFixedFields,
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// Handle the DecodeStatus returned from starting or resuming the
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// decoding of Http2GoAwayFields into goaway_fields_. If complete,
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// calls OnGoAwayStart.
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kHandleFixedFieldsStatus,
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// Report the Opaque Data portion of the payload to the listener's
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// OnGoAwayOpaqueData method, and call OnGoAwayEnd when the end of the
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// payload is reached.
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kReadOpaqueData,
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// The fixed size fields weren't all available when the decoder first
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// tried to decode them (state kStartDecodingFixedFields); this state
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// resumes the decoding when ResumeDecodingPayload is called later.
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kResumeDecodingFixedFields,
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};
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// Starts the decoding of a GOAWAY frame's payload, and completes it if
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// the entire payload is in the provided decode buffer.
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DecodeStatus StartDecodingPayload(FrameDecoderState* state, DecodeBuffer* db);
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// Resumes decoding a GOAWAY frame's payload that has been split across
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// decode buffers.
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DecodeStatus ResumeDecodingPayload(FrameDecoderState* state,
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DecodeBuffer* db);
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private:
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friend class test::GoAwayPayloadDecoderPeer;
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Http2GoAwayFields goaway_fields_;
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PayloadState payload_state_;
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};
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} // namespace net
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#endif // NET_HTTP2_DECODER_PAYLOAD_DECODERS_GOAWAY_PAYLOAD_DECODER_H_
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