147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org/* 247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * Copyright 2004 The WebRTC Project Authors. All rights reserved. 347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * 447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * Use of this source code is governed by a BSD-style license 547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * that can be found in the LICENSE file in the root of the source 647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * tree. An additional intellectual property rights grant can be found 747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * in the file PATENTS. All contributing project authors may 847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * be found in the AUTHORS file in the root of the source tree. 947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org */ 1047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 1147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#include <assert.h> 1247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 1347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#include "webrtc/base/nattypes.h" 1447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 1547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgnamespace rtc { 1647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 1747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgclass SymmetricNAT : public NAT { 1847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgpublic: 1947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org bool IsSymmetric() { return true; } 2047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org bool FiltersIP() { return true; } 2147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org bool FiltersPort() { return true; } 2247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org}; 2347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 2447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgclass OpenConeNAT : public NAT { 2547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgpublic: 2647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org bool IsSymmetric() { return false; } 2747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org bool FiltersIP() { return false; } 2847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org bool FiltersPort() { return false; } 2947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org}; 3047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 3147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgclass AddressRestrictedNAT : public NAT { 3247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgpublic: 3347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org bool IsSymmetric() { return false; } 3447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org bool FiltersIP() { return true; } 3547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org bool FiltersPort() { return false; } 3647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org}; 3747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 3847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgclass PortRestrictedNAT : public NAT { 3947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgpublic: 4047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org bool IsSymmetric() { return false; } 4147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org bool FiltersIP() { return true; } 4247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org bool FiltersPort() { return true; } 4347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org}; 4447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 4547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgNAT* NAT::Create(NATType type) { 4647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org switch (type) { 4747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org case NAT_OPEN_CONE: return new OpenConeNAT(); 4847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org case NAT_ADDR_RESTRICTED: return new AddressRestrictedNAT(); 4947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org case NAT_PORT_RESTRICTED: return new PortRestrictedNAT(); 5047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org case NAT_SYMMETRIC: return new SymmetricNAT(); 5147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org default: assert(0); return 0; 5247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } 5347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org} 5447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 5547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org} // namespace rtc 56