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Keywords specific to SIP messages which can be used mainly in if expressions. 核心关键词主要用在if语句里，如果用在xlog里打印，那么就打印的是字符串了呀 1. af The address family of the received SIP message. It is INET if the message was received over IPv4 or INET6 if the message was received over IPv6. Exampe of usage: if (af==INET6) { log("Message received over IPv6 link\n"); } 2. dst_ip The IP of the local interface where the SIP message was received. When the proxy listens on many network interfaces, makes possible to detect which was the one that received the packet. ...

Values that can be used in 'if’ expressions to check against Core Keywords 主要还是用在if语句里做比较 1. INET This keyword can be used to test whether the SIP packet was received over an IPv4 connection. Example of usage: if (af==INET) { log("the SIP message was received over IPv4\n"); } 2. INET6 This keyword can be used to test whether the SIP packet was received over an IPv6 connection. Example of usage: ...

kamailio和核心参数有106个，控制了kamailio的运行方式。 1. advertised_address 2. advertised_port 3. alias ⭐️ 4. async_workers 5. async_nonblock 6. async_usleep 7. async_workers_group 8. auto_aliases 9. auto_bind_ipv6 10. bind_ipv6_link_local 11. check_via ⭐️ 12. children 13. chroot 14. corelog 15. debug ⭐️ 16. description 17. disable_core_dump 18. disable_tls 19. enable_tls 20. exit_timeout 21. flags 22. force_rport ⭐️ 23. fork 24. fork_delay 25. group 26. http_reply_parse 27. ip_free_bind 28. ipv6_hex_style 29. kemi.onsend_route_callback 30. kemi.received_route_callback 31. kemi.reply_route_callback 32. kemi.pre_routing_callback 33. latency_cfg_log ⭐️ 34. latency_limit_action ⭐️ 35. latency_limit_db ⭐️ 36. latency_log ⭐️ 37. listen ⭐️ 38. loadmodule 39. loadmodulex 40. loadpath 41. local_rport ⭐️ 42. log_engine_data 43. log_engine_type 44. log_facility ⭐️ 45. log_name ⭐️ 46. log_prefix ⭐️ 47. log_prefix_mode ⭐️ 48. log_stderror 49. cfgengine 50. maxbuffer ⭐️ 51. max_branches 52. max_recursive_level 53. max_while_loops ⭐️ 54. mcast 55. mcast_loopback 56. mcast_ttl 57. memdbg 58. memlog ⭐️ 59. mem_join 60. mem_safety 61. mem_status_mode 62. mem_summary 63. mhomed 64. mlock_pages 65. modinit_delay 66. modparam 67. modparamx 68. onsend_route_reply 69. open_files_limit 70. phone2tel 71. pmtu_discovery 72. port 73. pv_buffer_size 74. pv_buffer_slots 75. pv_cache_limit 76. pv_cache_action 77. rundir 78. received_route_mode 79. reply_to_via 80. route_locks_size 81. server_id 82. server_header ⭐️ 83. server_signature ⭐️ 84. shm_force_alloc 85. shm_mem_size 86. sip_parser_log 87. sip_parser_mode ⭐️ 88. sip_warning (noisy feedback) 89. socket_workers 90. sql_buffer_size ⭐️ 91. statistics ⭐️ 92. stats_name_separator 93. tos 94. udp_mtu ⭐️ 95. udp_mtu_try_proto 96. uri_host_extra_chars 97. user ⭐️ 98. user_agent_header ⭐️ 99. verbose_startup ⭐️ 100. version_table ⭐️ 101. wait_worker1_mode 102. wait_worker1_time 103. wait_worker1_usleep 104. workdir ⭐️ 105. xavp_via_params 106. xavp_via_fields 1. advertised_address 用处不大，将会废弃 ...

Note: See also file doc/tutorials/dns.txt for details about Kamailio’s DNS client. Kamailio has an internal DNS resolver with caching capabilities. If this caching resolver is activated (default setting) then the system’s stub resolver won’t be used. Thus, also local name resolution configuration like /etc/hosts entries will not be used. If the DNS cache is deactivated (use_dns_cache=no), then system’s resolver will be used. The DNS failover functionality in the tm module references directly records in the DNS cache (which saves a lot of memory) and hence DNS based failover only works if the internal DNS cache is enabled. ...

The following parameters allows to tweak the TCP behaviour. 1. disable_tcp Global parameter to disable TCP support in the SIP server. Default value is ’no'. Example of usage: disable_tcp=yes 2. tcp_accept_aliases If a message received over a tcp connection has “alias” in its via a new tcp alias port will be created for the connection the message came from (the alias port will be set to the via one). ...

Most of TLS layer attributes can be configured via TLS module parameters. 1. tls_port_no The port the SIP server listens to for TLS connections. Default value is 5061. Example of usage: tls_port_no=6061 2. tls_max_connections Maximum number of TLS connections (if the number is exceeded no new TLS connections will be accepted). It cannot exceed tcp_max_connections. Default value is 2048. Example of usage: tls_max_connections=4096