1 files changed, 63 insertions, 0 deletions
diff --git a/third_party/libwebrtc/net/dcsctp/packet/chunk/chunk.h b/third_party/libwebrtc/net/dcsctp/packet/chunk/chunk.h
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index 0000000000..687aa1daa1
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+++ b/third_party/libwebrtc/net/dcsctp/packet/chunk/chunk.h
@@ -0,0 +1,63 @@
+/*
+ *  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_CHUNK_CHUNK_H_
+#define NET_DCSCTP_PACKET_CHUNK_CHUNK_H_
+
+#include <stddef.h>
+#include <sys/types.h>
+
+#include <cstdint>
+#include <iterator>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "absl/algorithm/container.h"
+#include "absl/strings/string_view.h"
+#include "absl/types/optional.h"
+#include "api/array_view.h"
+#include "net/dcsctp/packet/data.h"
+#include "net/dcsctp/packet/error_cause/error_cause.h"
+#include "net/dcsctp/packet/parameter/parameter.h"
+#include "net/dcsctp/packet/tlv_trait.h"
+
+namespace dcsctp {
+
+// Base class for all SCTP chunks
+class Chunk {
+ public:
+  Chunk() {}
+  virtual ~Chunk() = default;
+
+  // Chunks can contain data payloads that shouldn't be copied unnecessarily.
+  Chunk(Chunk&& other) = default;
+  Chunk& operator=(Chunk&& other) = default;
+  Chunk(const Chunk&) = delete;
+  Chunk& operator=(const Chunk&) = delete;
+
+  // Serializes the chunk to `out`, growing it as necessary.
+  virtual void SerializeTo(std::vector<uint8_t>& out) const = 0;
+
+  // Returns a human readable description of this chunk and its parameters.
+  virtual std::string ToString() const = 0;
+};
+
+// Introspects the chunk in `data` and returns a human readable textual
+// representation of it, to be used in debugging.
+std::string DebugConvertChunkToString(rtc::ArrayView<const uint8_t> data);
+
+struct ChunkConfig {
+  static constexpr int kTypeSizeInBytes = 1;
+};
+
+}  // namespace dcsctp
+
+#endif  // NET_DCSCTP_PACKET_CHUNK_CHUNK_H_