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100 lines
3.4 KiB
C++
100 lines
3.4 KiB
C++
// 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_THIRD_PARTY_HTTP2_TOOLS_HTTP2_FRAME_BUILDER_H_
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#define NET_THIRD_PARTY_HTTP2_TOOLS_HTTP2_FRAME_BUILDER_H_
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// Http2FrameBuilder builds wire-format HTTP/2 frames (or fragments thereof)
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// from components.
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//
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// For now, this is only intended for use in tests, and thus has EXPECT* in the
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// code. If desired to use it in an encoder, it will need optimization work,
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// especially w.r.t memory mgmt, and the EXPECT* will need to be removed or
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// replaced with DCHECKs.
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#include <stddef.h> // for size_t
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#include "net/third_party/http2/http2_constants.h"
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#include "net/third_party/http2/http2_structures.h"
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#include "net/third_party/http2/platform/api/http2_string.h"
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#include "net/third_party/http2/platform/api/http2_string_piece.h"
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namespace http2 {
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namespace test {
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class Http2FrameBuilder {
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public:
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Http2FrameBuilder(Http2FrameType type, uint8_t flags, uint32_t stream_id);
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explicit Http2FrameBuilder(const Http2FrameHeader& v);
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Http2FrameBuilder() {}
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~Http2FrameBuilder() {}
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size_t size() const { return buffer_.size(); }
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const Http2String& buffer() const { return buffer_; }
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//----------------------------------------------------------------------------
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// Methods for appending to the end of the buffer.
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// Append a sequence of bytes from various sources.
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void Append(Http2StringPiece s);
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void AppendBytes(const void* data, uint32_t num_bytes);
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// Append an array of type T[N] to the string. Intended for tests with arrays
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// initialized from literals, such as:
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// const char kData[] = {0x12, 0x23, ...};
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// builder.AppendBytes(kData);
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template <typename T, size_t N>
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void AppendBytes(T (&buf)[N]) {
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AppendBytes(buf, N * sizeof(buf[0]));
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}
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// Support for appending padding. Does not read or write the Pad Length field.
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void AppendZeroes(size_t num_zero_bytes);
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// Append various sizes of unsigned integers.
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void AppendUInt8(uint8_t value);
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void AppendUInt16(uint16_t value);
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void AppendUInt24(uint32_t value);
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void AppendUInt31(uint32_t value);
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void AppendUInt32(uint32_t value);
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// Append various enums.
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void Append(Http2ErrorCode error_code);
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void Append(Http2FrameType type);
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void Append(Http2SettingsParameter parameter);
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// Append various structures.
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void Append(const Http2FrameHeader& v);
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void Append(const Http2PriorityFields& v);
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void Append(const Http2RstStreamFields& v);
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void Append(const Http2SettingFields& v);
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void Append(const Http2PushPromiseFields& v);
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void Append(const Http2PingFields& v);
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void Append(const Http2GoAwayFields& v);
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void Append(const Http2WindowUpdateFields& v);
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void Append(const Http2AltSvcFields& v);
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// Methods for changing existing buffer contents (mostly focused on updating
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// the payload length).
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void WriteAt(Http2StringPiece s, size_t offset);
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void WriteBytesAt(const void* data, uint32_t num_bytes, size_t offset);
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void WriteUInt24At(uint32_t value, size_t offset);
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// Set the payload length to the specified size.
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void SetPayloadLength(uint32_t payload_length);
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// Sets the payload length to the size of the buffer minus the size of
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// the frame header.
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size_t SetPayloadLength();
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private:
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Http2String buffer_;
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};
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} // namespace test
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} // namespace http2
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#endif // NET_THIRD_PARTY_HTTP2_TOOLS_HTTP2_FRAME_BUILDER_H_
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