1 files changed, 57 insertions, 0 deletions
diff --git a/third_party/libwebrtc/net/dcsctp/packet/error_cause/stale_cookie_error_cause.cc b/third_party/libwebrtc/net/dcsctp/packet/error_cause/stale_cookie_error_cause.cc
new file mode 100644
index 0000000000..d77d8488f1
--- /dev/null
+++ b/third_party/libwebrtc/net/dcsctp/packet/error_cause/stale_cookie_error_cause.cc
@@ -0,0 +1,57 @@
+/*
+ *  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/stale_cookie_error_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-3.3.10.3
+
+//  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+//  |     Cause Code=3              |       Cause Length=8          |
+//  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+//  |                 Measure of Staleness (usec.)                  |
+//  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+constexpr int StaleCookieErrorCause::kType;
+
+absl::optional<StaleCookieErrorCause> StaleCookieErrorCause::Parse(
+    rtc::ArrayView<const uint8_t> data) {
+  absl::optional<BoundedByteReader<kHeaderSize>> reader = ParseTLV(data);
+  if (!reader.has_value()) {
+    return absl::nullopt;
+  }
+  uint32_t staleness_us = reader->Load32<4>();
+  return StaleCookieErrorCause(staleness_us);
+}
+
+void StaleCookieErrorCause::SerializeTo(std::vector<uint8_t>& out) const {
+  BoundedByteWriter<kHeaderSize> writer = AllocateTLV(out);
+  writer.Store32<4>(staleness_us_);
+}
+
+std::string StaleCookieErrorCause::ToString() const {
+  rtc::StringBuilder sb;
+  sb << "Stale Cookie Error, staleness_us=" << staleness_us_;
+  return sb.Release();
+}
+
+}  // namespace dcsctp