1 files changed, 60 insertions, 0 deletions
diff --git a/third_party/libwebrtc/net/dcsctp/packet/error_cause/missing_mandatory_parameter_cause.h b/third_party/libwebrtc/net/dcsctp/packet/error_cause/missing_mandatory_parameter_cause.h
new file mode 100644
index 0000000000..4435424295
--- /dev/null
+++ b/third_party/libwebrtc/net/dcsctp/packet/error_cause/missing_mandatory_parameter_cause.h
@@ -0,0 +1,60 @@
+/*
+ *  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.
+ */
+#ifndef NET_DCSCTP_PACKET_ERROR_CAUSE_MISSING_MANDATORY_PARAMETER_CAUSE_H_
+#define NET_DCSCTP_PACKET_ERROR_CAUSE_MISSING_MANDATORY_PARAMETER_CAUSE_H_
+#include <stddef.h>
+
+#include <cstdint>
+#include <string>
+#include <vector>
+
+#include "absl/strings/string_view.h"
+#include "api/array_view.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-3.3.10.2
+struct MissingMandatoryParameterCauseConfig : public ParameterConfig {
+  static constexpr int kType = 2;
+  static constexpr size_t kHeaderSize = 8;
+  static constexpr size_t kVariableLengthAlignment = 2;
+};
+
+class MissingMandatoryParameterCause
+    : public Parameter,
+      public TLVTrait<MissingMandatoryParameterCauseConfig> {
+ public:
+  static constexpr int kType = MissingMandatoryParameterCauseConfig::kType;
+
+  explicit MissingMandatoryParameterCause(
+      rtc::ArrayView<const uint16_t> missing_parameter_types)
+      : missing_parameter_types_(missing_parameter_types.begin(),
+                                 missing_parameter_types.end()) {}
+
+  static absl::optional<MissingMandatoryParameterCause> Parse(
+      rtc::ArrayView<const uint8_t> data);
+
+  void SerializeTo(std::vector<uint8_t>& out) const override;
+  std::string ToString() const override;
+
+  rtc::ArrayView<const uint16_t> missing_parameter_types() const {
+    return missing_parameter_types_;
+  }
+
+ private:
+  static constexpr size_t kMissingParameterSize = 2;
+  std::vector<uint16_t> missing_parameter_types_;
+};
+
+}  // namespace dcsctp
+
+#endif  // NET_DCSCTP_PACKET_ERROR_CAUSE_MISSING_MANDATORY_PARAMETER_CAUSE_H_