diff options
Diffstat (limited to 'third_party/libwebrtc/net/dcsctp/packet/chunk/error_chunk.cc')
-rw-r--r-- | third_party/libwebrtc/net/dcsctp/packet/chunk/error_chunk.cc | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/third_party/libwebrtc/net/dcsctp/packet/chunk/error_chunk.cc b/third_party/libwebrtc/net/dcsctp/packet/chunk/error_chunk.cc new file mode 100644 index 0000000000..baac0c5588 --- /dev/null +++ b/third_party/libwebrtc/net/dcsctp/packet/chunk/error_chunk.cc @@ -0,0 +1,62 @@ +/* + * 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/error_chunk.h" + +#include <stdint.h> + +#include <utility> +#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/error_cause/error_cause.h" +#include "net/dcsctp/packet/tlv_trait.h" + +namespace dcsctp { + +// https://tools.ietf.org/html/rfc4960#section-3.3.10 + +// 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 = 9 | Chunk Flags | Length | +// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +// \ \ +// / one or more Error Causes / +// \ \ +// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +constexpr int ErrorChunk::kType; + +absl::optional<ErrorChunk> ErrorChunk::Parse( + rtc::ArrayView<const uint8_t> data) { + absl::optional<BoundedByteReader<kHeaderSize>> reader = ParseTLV(data); + if (!reader.has_value()) { + return absl::nullopt; + } + absl::optional<Parameters> error_causes = + Parameters::Parse(reader->variable_data()); + if (!error_causes.has_value()) { + return absl::nullopt; + } + return ErrorChunk(*std::move(error_causes)); +} + +void ErrorChunk::SerializeTo(std::vector<uint8_t>& out) const { + rtc::ArrayView<const uint8_t> error_causes = error_causes_.data(); + BoundedByteWriter<kHeaderSize> writer = AllocateTLV(out, error_causes.size()); + writer.CopyToVariableData(error_causes); +} + +std::string ErrorChunk::ToString() const { + return "ERROR"; +} +} // namespace dcsctp |