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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set sw=2 ts=8 et tw=80 : */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_net_capsule_encoder_h
#define mozilla_net_capsule_encoder_h
#include "mozilla/Maybe.h"
#include "mozilla/net/NeqoHttp3Conn.h"
#include "mozilla/RefPtr.h"
#include "mozilla/Span.h"
#include "mozilla/net/NeqoHttp3Conn.h"
#include "nsTArray.h"
namespace mozilla::net {
struct StreamMetadata {
uint64_t mID{0};
size_t mDataSize{0};
uint64_t mStartOfData{0};
};
// A wrapper of neqo_common::Encoder.
class CapsuleEncoder final {
public:
CapsuleEncoder();
~CapsuleEncoder();
// Serializes the given capsule into the internal buffer owned by mEncoder.
void EncodeCapsule(Capsule& aCapsule);
// Provides external access to the mEncoder's internal buffer which contains
// the serialized capsule data. This function outputs a pointer to the start
// of the buffer along with its current length.
mozilla::Span<const uint8_t> GetBuffer();
Maybe<StreamMetadata>& GetStreamMetadata() { return mStreamMetadata; }
private:
RefPtr<NeqoEncoder> mEncoder;
CapsuleEncoder& EncodeByte(uint8_t aData);
template <typename T>
CapsuleEncoder& EncodeUint(uint32_t aSize, T aValue);
template <typename T>
CapsuleEncoder& EncodeVarint(T aValue);
CapsuleEncoder& EncodeString(const nsACString& aData);
CapsuleEncoder& EncodeBuffer(nsTArray<uint8_t>& aData);
CapsuleEncoder& EncodeBufferWithVarintLen(nsTArray<uint8_t>& aData);
static size_t VarintLength(uint64_t aValue);
// When this encoder contains a WT_STREAM capsule, this field tracks metadata
// for the stream data being sent.
Maybe<StreamMetadata> mStreamMetadata;
};
} // namespace mozilla::net
#endif
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