| /* |
| * 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/error_cause/user_initiated_abort_cause.h" |
| |
| #include <stdint.h> |
| |
| #include <string> |
| #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" |
| #include "rtc_base/strings/string_builder.h" |
| |
| namespace dcsctp { |
| |
| // https://tools.ietf.org/html/rfc4960#section-3.3.10.12 |
| |
| // 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 |
| // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| // | Cause Code=12 | Cause Length=Variable | |
| // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| // / Upper Layer Abort Reason / |
| // \ \ |
| // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| constexpr int UserInitiatedAbortCause::kType; |
| |
| absl::optional<UserInitiatedAbortCause> UserInitiatedAbortCause::Parse( |
| rtc::ArrayView<const uint8_t> data) { |
| absl::optional<BoundedByteReader<kHeaderSize>> reader = ParseTLV(data); |
| if (!reader.has_value()) { |
| return absl::nullopt; |
| } |
| if (reader->variable_data().empty()) { |
| return UserInitiatedAbortCause(""); |
| } |
| return UserInitiatedAbortCause( |
| std::string(reinterpret_cast<const char*>(reader->variable_data().data()), |
| reader->variable_data().size())); |
| } |
| |
| void UserInitiatedAbortCause::SerializeTo(std::vector<uint8_t>& out) const { |
| BoundedByteWriter<kHeaderSize> writer = |
| AllocateTLV(out, upper_layer_abort_reason_.size()); |
| writer.CopyToVariableData(rtc::MakeArrayView( |
| reinterpret_cast<const uint8_t*>(upper_layer_abort_reason_.data()), |
| upper_layer_abort_reason_.size())); |
| } |
| |
| std::string UserInitiatedAbortCause::ToString() const { |
| rtc::StringBuilder sb; |
| sb << "User-Initiated Abort, reason=" << upper_layer_abort_reason_; |
| return sb.Release(); |
| } |
| |
| } // namespace dcsctp |