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 #ifndef P2P_BASE_P2P_CONSTANTS_H_ 12 #define P2P_BASE_P2P_CONSTANTS_H_ 13 14 #include <stddef.h> 15 #include <stdint.h> 16 17 #include "rtc_base/system/rtc_export.h" 18 19 namespace cricket { 20 21 // CN_ == "content name". When we initiate a session, we choose the 22 // name, and when we receive a Gingle session, we provide default 23 // names (since Gingle has no content names). But when we receive a 24 // Jingle call, the content name can be anything, so don't rely on 25 // these values being the same as the ones received. 26 extern const char CN_AUDIO[]; 27 extern const char CN_VIDEO[]; 28 extern const char CN_DATA[]; 29 extern const char CN_OTHER[]; 30 31 // GN stands for group name 32 extern const char GROUP_TYPE_BUNDLE[]; 33 34 RTC_EXPORT extern const int ICE_UFRAG_LENGTH; 35 RTC_EXPORT extern const int ICE_PWD_LENGTH; 36 extern const size_t ICE_UFRAG_MIN_LENGTH; 37 extern const size_t ICE_PWD_MIN_LENGTH; 38 extern const size_t ICE_UFRAG_MAX_LENGTH; 39 extern const size_t ICE_PWD_MAX_LENGTH; 40 41 RTC_EXPORT extern const int ICE_CANDIDATE_COMPONENT_RTP; 42 RTC_EXPORT extern const int ICE_CANDIDATE_COMPONENT_RTCP; 43 extern const int ICE_CANDIDATE_COMPONENT_DEFAULT; 44 45 // RFC 4145, SDP setup attribute values. 46 extern const char CONNECTIONROLE_ACTIVE_STR[]; 47 extern const char CONNECTIONROLE_PASSIVE_STR[]; 48 extern const char CONNECTIONROLE_ACTPASS_STR[]; 49 extern const char CONNECTIONROLE_HOLDCONN_STR[]; 50 51 // RFC 6762, the .local pseudo-top-level domain used for mDNS names. 52 extern const char LOCAL_TLD[]; 53 54 // Constants for time intervals are in milliseconds unless otherwise stated. 55 // 56 // Most of the following constants are the default values of IceConfig 57 // paramters. See IceConfig for detailed definition. 58 // 59 // Default value of IceConfig.receiving_timeout. 60 extern const int RECEIVING_TIMEOUT; 61 // Default value IceConfig.ice_check_min_interval. 62 extern const int MIN_CHECK_RECEIVING_INTERVAL; 63 // The next two ping intervals are at the ICE transport level. 64 // 65 // STRONG_PING_INTERVAL is applied when the selected connection is both 66 // writable and receiving. 67 // 68 // Default value of IceConfig.ice_check_interval_strong_connectivity. 69 extern const int STRONG_PING_INTERVAL; 70 // WEAK_PING_INTERVAL is applied when the selected connection is either 71 // not writable or not receiving. 72 // 73 // Defaul value of IceConfig.ice_check_interval_weak_connectivity. 74 extern const int WEAK_PING_INTERVAL; 75 // The next two ping intervals are at the candidate pair level. 76 // 77 // Writable candidate pairs are pinged at a slower rate once they are stabilized 78 // and the channel is strongly connected. 79 extern const int STRONG_AND_STABLE_WRITABLE_CONNECTION_PING_INTERVAL; 80 // Writable candidate pairs are pinged at a faster rate while the connections 81 // are stabilizing or the channel is weak. 82 extern const int WEAK_OR_STABILIZING_WRITABLE_CONNECTION_PING_INTERVAL; 83 // Default value of IceConfig.backup_connection_ping_interval 84 extern const int BACKUP_CONNECTION_PING_INTERVAL; 85 // Defualt value of IceConfig.receiving_switching_delay. 86 extern const int RECEIVING_SWITCHING_DELAY; 87 // Default value of IceConfig.regather_on_failed_networks_interval. 88 extern const int REGATHER_ON_FAILED_NETWORKS_INTERVAL; 89 // Default vaule of IceConfig.ice_unwritable_timeout. 90 extern const int CONNECTION_WRITE_CONNECT_TIMEOUT; 91 // Default vaule of IceConfig.ice_unwritable_min_checks. 92 extern const uint32_t CONNECTION_WRITE_CONNECT_FAILURES; 93 // Default value of IceConfig.ice_inactive_timeout; 94 extern const int CONNECTION_WRITE_TIMEOUT; 95 // Default value of IceConfig.stun_keepalive_interval; 96 extern const int STUN_KEEPALIVE_INTERVAL; 97 98 // The following constants are used at the candidate pair level to determine the 99 // state of a candidate pair. 100 // 101 // The timeout duration when a connection does not receive anything. 102 extern const int WEAK_CONNECTION_RECEIVE_TIMEOUT; 103 // A connection will be declared dead if it has not received anything for this 104 // long. 105 extern const int DEAD_CONNECTION_RECEIVE_TIMEOUT; 106 // This is the length of time that we wait for a ping response to come back. 107 extern const int CONNECTION_RESPONSE_TIMEOUT; 108 // The minimum time we will wait before destroying a connection after creating 109 // it. 110 extern const int MIN_CONNECTION_LIFETIME; 111 112 } // namespace cricket 113 114 #endif // P2P_BASE_P2P_CONSTANTS_H_ 115