naiveproxy/net/quic/http/tools/quic_http_frame_builder.h

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2018-01-28 21:32:06 +03:00
// Copyright 2017 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_QUIC_HTTP_TOOLS_QUIC_HTTP_FRAME_BUILDER_H_
#define NET_QUIC_HTTP_TOOLS_QUIC_HTTP_FRAME_BUILDER_H_
// QuicHttpFrameBuilder builds wire-format HTTP/2 frames (or fragments thereof)
// from components.
//
// For now, this is only intended for use in tests, and thus has EXPECT* in the
// code. If desired to use it in an encoder, it will need optimization work,
// especially w.r.t memory mgmt, and the EXPECT* will need to be removed or
// replaced with DCHECKs.
#include <stddef.h> // for size_t
#include <cstdint>
#include "net/quic/http/quic_http_constants.h"
#include "net/quic/http/quic_http_structures.h"
#include "net/quic/platform/api/quic_string.h"
#include "net/quic/platform/api/quic_string_piece.h"
namespace net {
namespace test {
class QuicHttpFrameBuilder {
public:
QuicHttpFrameBuilder(QuicHttpFrameType type,
uint8_t flags,
uint32_t stream_id);
explicit QuicHttpFrameBuilder(const QuicHttpFrameHeader& v);
QuicHttpFrameBuilder() {}
~QuicHttpFrameBuilder() {}
size_t size() const { return buffer_.size(); }
const QuicString& buffer() const { return buffer_; }
//----------------------------------------------------------------------------
// Methods for appending to the end of the buffer.
// Append a sequence of bytes from various sources.
void Append(QuicStringPiece s);
void AppendBytes(const void* data, uint32_t num_bytes);
// Append an array of type T[N] to the std::string. Intended for tests with
// arrays initialized from literals, such as:
// const char kData[] = {0x12, 0x23, ...};
// builder.AppendBytes(kData);
template <typename T, size_t N>
void AppendBytes(T (&buf)[N]) {
AppendBytes(buf, N * sizeof(buf[0]));
}
// Support for appending padding. Does not read or write the Pad Length field.
void AppendZeroes(size_t num_zero_bytes);
// Append various sizes of unsigned integers.
void AppendUInt8(uint8_t value);
void AppendUInt16(uint16_t value);
void AppendUInt24(uint32_t value);
void AppendUInt31(uint32_t value);
void AppendUInt32(uint32_t value);
// Append various enums.
void Append(QuicHttpErrorCode error_code);
void Append(QuicHttpFrameType type);
void Append(QuicHttpSettingsParameter parameter);
// Append various structures.
void Append(const QuicHttpFrameHeader& v);
void Append(const QuicHttpPriorityFields& v);
void Append(const QuicHttpRstStreamFields& v);
void Append(const QuicHttpSettingFields& v);
void Append(const QuicHttpPushPromiseFields& v);
void Append(const QuicHttpPingFields& v);
void Append(const QuicHttpGoAwayFields& v);
void Append(const QuicHttpWindowUpdateFields& v);
void Append(const QuicHttpAltSvcFields& v);
// Methods for changing existing buffer contents (mostly focused on updating
// the payload length).
void WriteAt(QuicStringPiece s, size_t offset);
void WriteBytesAt(const void* data, uint32_t num_bytes, size_t offset);
void WriteUInt24At(uint32_t value, size_t offset);
// Set the payload length to the specified size.
void SetPayloadLength(uint32_t payload_length);
// Sets the payload length to the size of the buffer minus the size of
// the frame header.
size_t SetPayloadLength();
private:
QuicString buffer_;
};
} // namespace test
} // namespace net
#endif // NET_QUIC_HTTP_TOOLS_QUIC_HTTP_FRAME_BUILDER_H_