1 files changed, 68 insertions, 0 deletions
diff --git a/third_party/libwebrtc/net/dcsctp/packet/parameter/add_incoming_streams_request_parameter.cc b/third_party/libwebrtc/net/dcsctp/packet/parameter/add_incoming_streams_request_parameter.cc
new file mode 100644
index 0000000000..c33e3e11f6
--- /dev/null
+++ b/third_party/libwebrtc/net/dcsctp/packet/parameter/add_incoming_streams_request_parameter.cc
@@ -0,0 +1,68 @@
+/*
+ *  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/parameter/add_incoming_streams_request_parameter.h"
+
+#include <stdint.h>
+
+#include <string>
+#include <type_traits>
+#include <vector>
+
+#include "absl/types/optional.h"
+#include "api/array_view.h"
+#include "net/dcsctp/common/internal_types.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/rfc6525#section-4.6
+
+//   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
+//  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+//  |     Parameter Type = 18       |      Parameter Length = 12    |
+//  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+//  |          Re-configuration Request Sequence Number             |
+//  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+//  |      Number of new streams    |         Reserved              |
+//  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+constexpr int AddIncomingStreamsRequestParameter::kType;
+
+absl::optional<AddIncomingStreamsRequestParameter>
+AddIncomingStreamsRequestParameter::Parse(rtc::ArrayView<const uint8_t> data) {
+  absl::optional<BoundedByteReader<kHeaderSize>> reader = ParseTLV(data);
+  if (!reader.has_value()) {
+    return absl::nullopt;
+  }
+  ReconfigRequestSN request_sequence_number(reader->Load32<4>());
+  uint16_t nbr_of_new_streams = reader->Load16<8>();
+
+  return AddIncomingStreamsRequestParameter(request_sequence_number,
+                                            nbr_of_new_streams);
+}
+
+void AddIncomingStreamsRequestParameter::SerializeTo(
+    std::vector<uint8_t>& out) const {
+  BoundedByteWriter<kHeaderSize> writer = AllocateTLV(out);
+  writer.Store32<4>(*request_sequence_number_);
+  writer.Store16<8>(nbr_of_new_streams_);
+}
+
+std::string AddIncomingStreamsRequestParameter::ToString() const {
+  rtc::StringBuilder sb;
+  sb << "Add Incoming Streams Request, req_seq_nbr="
+     << *request_sequence_number();
+  return sb.Release();
+}
+
+}  // namespace dcsctp