Previous stable version was 4.4.x (released on March, 2016), see what was new in that release at:

• http://www.kamailio.org/wiki/features/new-in-4.4.x

This is a draft of new features added in v5.0.x, manually updated, thus not always synchronized with what is new in source code repository.

• execute embedded JavaScript code inside kamailio.cfg
• relies on Duktape JS engine
• http://kamailio.org/docs/modules/devel/modules/app_jsdt.html

• IMS online charging module
• http://kamailio.org/docs/modules/devel/modules/ims_ocs.html

• nsq.io connector for kamailio.cfg
• http://kamailio.org/docs/modules/devel/modules/nsq.html

• RPC commands related to presence user agent functionality
• http://kamailio.org/docs/modules/devel/modules/pua_rpc.html

• rabbitmq client for configuration script
• http://kamailio.org/docs/modules/devel/modules/rabbitmq.html

• JSON-based access to SS7 packets received over HEP
• http://kamailio.org/docs/modules/devel/modules/ss7ops.html

• added flags to control alias db lookup and reverse lookup

• ability to execute routing blocks written directly in Lua (KEMI framework)

• ability to execute routing blocks written directly in Python (KEMI framework)

• added option to use SHA-256 encryption algorithm for digest authentication
• add an option to include an Authentication-Info header in the response to a successful authentication

• added rpc commands

• implemented rpc commands

• implemented cr.dump command

• added ability to receive TIMEOUT event while in IDLE state to authstatemachine to avoid stale sessions

• added trylock() function
• implemented rpc commands

• implemented rpc commands

• added rpc command db_berkeley.reload

• new config variable replace_query
  • Tells if the ODBC replace query is supported by the DB odbc driver
  • Just like insert, but update the row if it exists otherwise insert
• added new parameter - quote_char
  • specify the character to be used for quoting column and table names in database query

• new rpc function: dlg.terminate_dlg
  • terminates a single dialog, identified by a Call-ID.
  • terminates an ongoing dialog by sending BYE in both directions
• option to set the limit for failed keepalive to end the dialog
  • new parameter ka_failed_limit, default value is 1
• support for dialog replication via DMQ
• from-tag optional on dlg.dlg_list/_ctx RPC commands

• new function ds_select(setid, alg, [limit])
  • puts the addresses from destination set in the internal avps lists, without updating dst-uri or r-uri
• added new function ds_reload()
• use avl indexing

• added modparam to specify the usrloc domain to synchronize

• single digit is now valid in function enum_query
  • is_e164() returns true for a single digit (previously two digits)

• support for tagging connections and select for sending based on tag
  • evapi_set_tag(tname)
  • evapi_multicast(data, tag)
  • evapi_async_multicast(data, tag)
  • evapi_unicast(data, tag)
  • evapi_async_unicast(data, tag)

• implementation of kemi callback for event routes

• added pseudo variable http_req_id
• set request's body through $http_req pseudo-variable
• added support for authentication

• support for HTTP proxy on a connection
• added configurable authentication methods
• enable keep_connection option
• implemented failover between connections

• implemented rpc commands imc.list_rooms, imc.list_memebers

• add support for final_unit_indication and redirect in CCA

• added command to end all active calls

• if a route block is defined for lir_user_unknown, run it instead of default

• new RPC command regscscf.dereg_impu to initiate network de-register
• add param max_notification list size and stat of current size

  
* max_subscribes parameter - this limits the number of subscriptions per IMPU, watcher URI and event combination
* add param max_notification list size and stat of current size

• new param regex_sdp_ip_prefix_to_maintain_in_fd
• added support for IPv6 IPCAN Session on Rx interface towards PCRF
• store vendor_id on auth session
• new param delete_contact_on_rx_failure
• added additional stat for total number of rx media sessions
• new mod_param to add RTCP flow description for media flow

• is_in_subnet(): add support for networks list
• added detailed_ip_type() functions

• new core stats
  • RPC request: stats.get_statistics all
  • requests by method
    • core:rcv_requests_invite
    • core:rcv_requests_cancel
    • core:rcv_requests_ack
    • core:rcv_requests_bye
    • core:rcv_requests_info
    • core:rcv_requests_register
    • core:rcv_requests_subscribe
    • core:rcv_requests_notify
    • core:rcv_requests_message
    • core:rcv_requests_options
    • core:rcv_requests_prack
    • core:rcv_requests_update
    • core:rcv_requests_refer
    • core:rcv_requests_publish
  • replies by status code
    • core:rcv_replies_1xx
    • core:rcv_replies_18x
    • core:rcv_replies_2xx
    • core:rcv_replies_3xx
    • core:rcv_replies_4xx
    • core:rcv_replies_401
    • core:rcv_replies_404
    • core:rcv_replies_407
    • core:rcv_replies_480
    • core:rcv_replies_486
    • core:rcv_replies_5xx
    • core:rcv_replies_6xx

• new function sd_journal_send_xavp() - creates a structured log event in journald

• added matrix.reload rpc command

• added mqueue.get_size rpc command

• implemented rpc command nathelper.enable_ping

• added parameters to control connect and command timeouts
  • connect_timeout (int)
  • cmd_timeout (int)

• new module parameter `force_delete`
  • disabled by default
  • enabling this parameter will delete expired presentity records without updating watchers (no NOTIFY)

• new module parameter `retrieve_order_by`
  • default value is “priority”
  • Used to set the order-by of the db query for fetching the presence records
• added local_log_facility configuration parameter
• added parameter startup_mode
• added rpc command presence.refreshWatchers

• added pua.cleanup rpc command

• new function pv_evalx(dst, fmt)
  • The fmt string is evaluated twice for exiting variables, the result is stored in dst variable.
• new class of pseudo-variable - $msg(attr) - return attributes of sip message
  • $msg(len) - sip message lenght
  • $msg(buf) - sip message buffer
  • $msg(body) - sip message body
  • $msg(body_len) - sip message body lenght
  • $msg(hdrs) - sip message headers
  • $msg(fline) - sip message first line
• add s.escape.csv transformation
  • escapes a string to use as a CSV field, as specified in RFC4180

• added rpc commands

• added expiry value to the xavp.
  • handy if Kamailio for some reason changes the expiry value (min, max or variations caused by expiry_range)
• added parameter “contact_max_size” to make max contact size configurable

• added rpc command rls.cleanup

• allow multiple timer processes per timer

• new 'unidirectional' flag in Sipwise rtpengine
  • allows kernelization of one-way streams
• parameters configurable via cfg framework
  • rtpengine_disable_tout, rtpengine_tout_ms, queried_nodes_limit, rtpengine_retr are now configurable via kamcmd commands
• implemented rpc command rtpengine.reload

• implemented rpc commands rtpproxy.enable and rtpproxy.list

• new module parameters:
  • onhold_bflag, if bflag is set skips parsing SDP and sets onhold
  • server_address, force Contact header address in replies

• sca_call_info_update(): new to/from URI parameters
  • skips parsing message for To/From header values and uses URI values from parameters

• new config variable $sdp(body)
  • returns the sdp body as raw string
• new optional parameter to sdp_remove_line_by_prefix script function
  • sdp_remove_line_by_prefix(string [, mtype])
  • mtype can be provided to apply the operations only to the streams matching m=mtype
  • allows setting a mediatype (e.g. video or audio), when removing a codec from the SDP

• added nonsip_hook support. Now $hep variable available
• added X-RTP-Stat-T38 and X-RTP-Stat-Add
• added support for custom fields

• added support for HEPv3

• new pseudo variables
  • $pcv(orig) - returns orig-ioi from P-Charging-Vector header
  • $pcv(term) - returns term-ioi from P-Charging-Vector header

• allow to set the size of sql escape buffer for transformations

• use dedicated routes for tcp close events
  • tcp:closed for “normal” close by the other side
  • tcp:timeout for timeouts
  • tcp:reset for connections closed with RST

• uac: added failover support for local requests
• uac: added support for onsend route on local requests
• tm: implemented rpc command tm.reply_callid
• added t_uac_send(method, ruri, nexthop, socket, headers, body)
  • can be used in config to send new requests (initial or within dialog)

• uac_reg: add uac_reg_status() function
  • new function to obtain registration status from within configuration script
• uac_reg: added function to remove registration
• uac_reg: added RPC function to remove a registration
• uac_reg: added RPC function to add a new registration
• uac_reg: return HTTP-like fault codes for RPC
• uac_reg: handle 423 response to outbound register
• uac_reg: keep Call-ID in registration sequence
• uac_reg: add setting for using a random reg_delay

• implemented rpc command userblacklist.reload_blacklist

• added function to check any sip uri

• remove http_query function (use instead the http_client module)

• implemented rpc commands

• added $ws_conid pseudo variable
  • gives id of closed connection in websocket:closed event route
• implemented ws.ping and ws.pong rpc commands
• implemented ws.dump rpc command
• implemented ws.enable and ws.disable rpc commands

• print tos value if socket option for it cannot be set
• skip unusable network interfaces
  • no IP addr associated
  • address family AF_PACKET
• skip address family AF_PACKET on -l iface_name
• mem_status_all - allow selecting of dumping memory status also for used fragments
• mem_status_mode parameter - if set to 1, qm allocator dumps used fragments in memory status
• new command line option '-Y dir'
  • set the runtime directory (used to create fifo, ctl socket, etc…)

A new framework (named kemi - kamailio embedded interface) was added, allowing to writing routing blocks in embedded languages such as Lua, JavaScript or Python:

• http://www.kamailio.org/wiki/devel/config-engines

New global parameter to specify the config engine:

• cfgengine=“name”

• log_prefix_mode
  • If set to 1, then the log prefix is evaluated before/after each config action
  • needs to be set when the log_prefix has variables that are different based on the context of config execution
    • e.g., $cfg(line))

• latency_cfg_log
  • Log message with the duration of executing request route or reply route is printed to syslog

• mcast
  • Specify interface to join multicast group for multicast listen address

• srdb1: support for db result with allocated column names
• kcore: library has been removed
• kmi: library has been removed

• locking - added recursive lock apis
• dedicated struct for TCP closed events
• restructured source code tree

• rr module parameter enable_full_lr now defaults to 0
• no more lr=on in Record-Route

• use t_precheck_trans() to catch retransmissions faster

• drop silently traffic from scanners

• added option to block 401/407 from downstream

• now interacts with Kamailio via a fifo file using jsonrpcs module
  • CTLENGINE is RPCFIFO by default
  • RPCFIFOPATH has to be set to the fifo file created by jsonrpcs module

• kamctl rpc command is available for sending raw jsonrpc commands
  • see documentation for all RPC methods
  • the prefix s: or i: can be used to enforce type string or int for parameters
    • by default forwards number cli parameters as number type in jsonrpc commands

    kamctl rpc jsonrpc.echo abc 123
    kamctl rpc jsonrpc.echo s:abc i:123
    kamctl rpc jsonrpc.echo s:888 i:123
    kamctl rpc core.version

• added DBPORT option - allows to specify database engine (mysql/psql) port

• new command line tool
• kamcli is aiming at being a modern and extensible alternative to the shell script kamctl
• communicates to Kamailio via jsonrpcs module
• https://github.com/kamailio/kamcli

• protoshoot: option to disable sctp with SCTP=0 in make command

• reworked the unit tests to be in sync with latest version
• added new unit tests