diff options
Diffstat (limited to 'third_party/libwebrtc/net/dcsctp/packet/chunk/cookie_echo_chunk.cc')
-rw-r--r-- | third_party/libwebrtc/net/dcsctp/packet/chunk/cookie_echo_chunk.cc | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/third_party/libwebrtc/net/dcsctp/packet/chunk/cookie_echo_chunk.cc b/third_party/libwebrtc/net/dcsctp/packet/chunk/cookie_echo_chunk.cc new file mode 100644 index 0000000000..a01d0b13c4 --- /dev/null +++ b/third_party/libwebrtc/net/dcsctp/packet/chunk/cookie_echo_chunk.cc @@ -0,0 +1,54 @@ +/* + * Copyright (c) 2021 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ +#include "net/dcsctp/packet/chunk/cookie_echo_chunk.h" + +#include <stdint.h> + +#include <type_traits> +#include <vector> + +#include "absl/types/optional.h" +#include "api/array_view.h" +#include "net/dcsctp/packet/bounded_byte_reader.h" +#include "net/dcsctp/packet/bounded_byte_writer.h" +#include "net/dcsctp/packet/tlv_trait.h" + +namespace dcsctp { + +// https://tools.ietf.org/html/rfc4960#section-3.3.11 + +// 0 1 2 3 +// 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +// | Type = 10 |Chunk Flags | Length | +// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +// / Cookie / +// \ \ +// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +constexpr int CookieEchoChunk::kType; + +absl::optional<CookieEchoChunk> CookieEchoChunk::Parse( + rtc::ArrayView<const uint8_t> data) { + absl::optional<BoundedByteReader<kHeaderSize>> reader = ParseTLV(data); + if (!reader.has_value()) { + return absl::nullopt; + } + return CookieEchoChunk(reader->variable_data()); +} + +void CookieEchoChunk::SerializeTo(std::vector<uint8_t>& out) const { + BoundedByteWriter<kHeaderSize> writer = AllocateTLV(out, cookie_.size()); + writer.CopyToVariableData(cookie_); +} + +std::string CookieEchoChunk::ToString() const { + return "COOKIE-ECHO"; +} +} // namespace dcsctp |