henrike@webrtc.org | f7795df | 2014-05-13 18:00:26 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004 The WebRTC Project Authors. All rights reserved. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license |
| 5 | * that can be found in the LICENSE file in the root of the source |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
| 11 | #include <assert.h> |
| 12 | |
| 13 | #include "webrtc/base/nattypes.h" |
| 14 | |
| 15 | namespace rtc { |
| 16 | |
| 17 | class SymmetricNAT : public NAT { |
| 18 | public: |
| 19 | bool IsSymmetric() { return true; } |
| 20 | bool FiltersIP() { return true; } |
| 21 | bool FiltersPort() { return true; } |
| 22 | }; |
| 23 | |
| 24 | class OpenConeNAT : public NAT { |
| 25 | public: |
| 26 | bool IsSymmetric() { return false; } |
| 27 | bool FiltersIP() { return false; } |
| 28 | bool FiltersPort() { return false; } |
| 29 | }; |
| 30 | |
| 31 | class AddressRestrictedNAT : public NAT { |
| 32 | public: |
| 33 | bool IsSymmetric() { return false; } |
| 34 | bool FiltersIP() { return true; } |
| 35 | bool FiltersPort() { return false; } |
| 36 | }; |
| 37 | |
| 38 | class PortRestrictedNAT : public NAT { |
| 39 | public: |
| 40 | bool IsSymmetric() { return false; } |
| 41 | bool FiltersIP() { return true; } |
| 42 | bool FiltersPort() { return true; } |
| 43 | }; |
| 44 | |
| 45 | NAT* NAT::Create(NATType type) { |
| 46 | switch (type) { |
| 47 | case NAT_OPEN_CONE: return new OpenConeNAT(); |
| 48 | case NAT_ADDR_RESTRICTED: return new AddressRestrictedNAT(); |
| 49 | case NAT_PORT_RESTRICTED: return new PortRestrictedNAT(); |
| 50 | case NAT_SYMMETRIC: return new SymmetricNAT(); |
| 51 | default: assert(0); return 0; |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | } // namespace rtc |