diff options
Diffstat (limited to 'chromium/third_party/webrtc/base/nattypes.h')
-rw-r--r-- | chromium/third_party/webrtc/base/nattypes.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/chromium/third_party/webrtc/base/nattypes.h b/chromium/third_party/webrtc/base/nattypes.h new file mode 100644 index 00000000000..27e4b2f4575 --- /dev/null +++ b/chromium/third_party/webrtc/base/nattypes.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 WEBRTC_BASE_NATTYPE_H__ +#define WEBRTC_BASE_NATTYPE_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 // WEBRTC_BASE_NATTYPE_H__ |