Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 47 insertions, 0 deletions

diff --git a/third_party/libwebrtc/rtc_base/nat_types.h b/third_party/libwebrtc/rtc_base/nat_types.h
new file mode 100644
index 0000000000..60e7fbd4b4
--- /dev/null
+++ b/third_party/libwebrtc/rtc_base/nat_types.h
@@ -0,0 +1,47 @@
+/*
+ *  Copyright 2004 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 RTC_BASE_NAT_TYPES_H_
+#define RTC_BASE_NAT_TYPES_H_
+
+namespace rtc {
+
+/* Identifies each type of NAT that can be simulated. */
+enum NATType {
+  NAT_OPEN_CONE,
+  NAT_ADDR_RESTRICTED,
+  NAT_PORT_RESTRICTED,
+  NAT_SYMMETRIC
+};
+
+// Implements the rules for each specific type of NAT.
+class NAT {
+ public:
+  virtual ~NAT() {}
+
+  // Determines whether this NAT uses both source and destination address when
+  // checking whether a mapping already exists.
+  virtual bool IsSymmetric() = 0;
+
+  // Determines whether this NAT drops packets received from a different IP
+  // the one last sent to.
+  virtual bool FiltersIP() = 0;
+
+  // Determines whether this NAT drops packets received from a different port
+  // the one last sent to.
+  virtual bool FiltersPort() = 0;
+
+  // Returns an implementation of the given type of NAT.
+  static NAT* Create(NATType type);
+};
+
+}  // namespace rtc
+
+#endif  // RTC_BASE_NAT_TYPES_H_