| /* |
| * 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. |
| */ |
| |
| #include "webrtc/rtc_base/nattypes.h" |
| |
| #include "webrtc/rtc_base/checks.h" |
| |
| namespace rtc { |
| |
| class SymmetricNAT : public NAT { |
| public: |
| bool IsSymmetric() override { return true; } |
| bool FiltersIP() override { return true; } |
| bool FiltersPort() override { return true; } |
| }; |
| |
| class OpenConeNAT : public NAT { |
| public: |
| bool IsSymmetric() override { return false; } |
| bool FiltersIP() override { return false; } |
| bool FiltersPort() override { return false; } |
| }; |
| |
| class AddressRestrictedNAT : public NAT { |
| public: |
| bool IsSymmetric() override { return false; } |
| bool FiltersIP() override { return true; } |
| bool FiltersPort() override { return false; } |
| }; |
| |
| class PortRestrictedNAT : public NAT { |
| public: |
| bool IsSymmetric() override { return false; } |
| bool FiltersIP() override { return true; } |
| bool FiltersPort() override { return true; } |
| }; |
| |
| NAT* NAT::Create(NATType type) { |
| switch (type) { |
| case NAT_OPEN_CONE: |
| return new OpenConeNAT(); |
| case NAT_ADDR_RESTRICTED: |
| return new AddressRestrictedNAT(); |
| case NAT_PORT_RESTRICTED: |
| return new PortRestrictedNAT(); |
| case NAT_SYMMETRIC: |
| return new SymmetricNAT(); |
| default: |
| RTC_NOTREACHED(); |
| return 0; |
| } |
| } |
| |
| } // namespace rtc |