Version 4.0.0 is planned to be released in the first half of March 2013.

Previous major version was 3.3.x (released in June 2012), see what was new in that release at:

• http://www.kamailio.org/wiki/features/new-in-3.3.x

This is a draft of new features added in v4.0.0, manually updated, thus not always synchronized with what is new in source code repository.

• C Diameter Peer - core communication engine
• http://kamailio.org/docs/modules/4.0.x/modules/cdp.html

• C Diameter Peer - application extensions
• http://kamailio.org/docs/modules/4.0.x/modules/cdp_avp.html

• new module to export more internal core API to config
• http://kamailio.org/docs/modules/4.0.x/modules/corex.html

• new module providing the NG framework for tracking SIP dialogs
• http://kamailio.org/docs/modules/4.0.x/modules/dialog_ng.html

• new module to provide authentication for IMS
• http://kamailio.org/docs/modules/4.0.x/modules/ims_auth.html

• new module to provide IMS ICSCF component
• http://kamailio.org/docs/modules/4.0.x/modules/ims_icscf.html

• new module to provide IMS ICS component
• http://kamailio.org/docs/modules/4.0.x/modules/ims_isc.html

• new module to provide Diameter Rx IMS interface between PCSCF and PCRF functions
• http://kamailio.org/docs/modules/4.0.x/modules/ims_qos.html

• new module to provide IMS PCSCF registrar component
• http://kamailio.org/docs/modules/4.0.x/modules/ims_registrar_pcscf.html

• new module to provide IMS SCSCF registrar component
• http://kamailio.org/docs/modules/4.0.x/modules/ims_registrar_scscf.html

• new module to provide IMS PCSCF user location component
• http://kamailio.org/docs/modules/4.0.x/modules/ims_usrloc_pcscf.html

• new module to IMS SCSCF user location component
• http://kamailio.org/docs/modules/4.0.x/modules/ims_usrloc_scscf.html

• new module providing SIP Outbound (RFC 5626) Edge Proxy support
• http://kamailio.org/docs/modules/4.0.x/modules_k/outbound.html

• new module providing a WebSocket (RFC 6455) server for:
  • SIP over WebSocket (draft-ietf-sipcore-sip-websocket)
  • MSRP over WebSocket (draft-pd-dispatch-msrp-websocket)
• http://kamailio.org/docs/modules/4.0.x/modules/websocket.html

• new module - provides a web provisioning interface
• http://kamailio.org/docs/modules/4.0.x/modules/xhttp_pi.html

This modules are imported from SER flavour, being new from Kamailio packaging point of view (they were not part of Kamailio distribution in the past).

• avp manipulation tools
• http://kamailio.org/docs/modules/4.0.x/modules/avp.html

• DB API v2 connector for LDAP
• http://kamailio.org/docs/modules/4.0.x/modules/db2_ldap.html

• DB API v2 script operations
• http://kamailio.org/docs/modules/4.0.x/modules/db2_ops.html

• test drive module for memory managers
• http://kamailio.org/docs/modules/4.0.x/modules/malloc_test.html

• SIP message mangling tools
• http://kamailio.org/docs/modules/4.0.x/modules/mangler.html

• sample module (for devel)
• http://kamailio.org/docs/modules/4.0.x/modules/print.html

• sample module depending on internal library (for devel)
• http://kamailio.org/docs/modules/4.0.x/modules/print_lib.html

• routing block execution on core timers
• http://kamailio.org/docs/modules/4.0.x/modules/timer.html

• authentication using db structure based on unique user id
• http://kamailio.org/docs/modules/4.0.x/modules/uid_auth_db.html

• per user APV loading from db structure based on unique user id
• http://kamailio.org/docs/modules/4.0.x/modules/uid_avp_db.html

• multi-domain management using db structure based on unique user id
• http://kamailio.org/docs/modules/4.0.x/modules/uid_domain.html

• global flags and AVPs management using db structure based on unique user id
• http://kamailio.org/docs/modules/4.0.x/modules/uid_gflags.html

• uri management using db structure based on unique user id
• http://kamailio.org/docs/modules/4.0.x/modules/uid_uri_db.html

• log messages from scrip using %xy specifiers (former SER xlog module)
• http://kamailio.org/docs/modules/4.0.x/modules/xprint.html

• table name for db acc can be dynamic

• extended the API with registrar:save_uri()

• added new variant of pv_www_authenticate() which takes method as a parameter
• new function has_credentials(realm) - returns true if an authorization header matching the realm is found
• new function pv_auth_check(…)
  • equivalent of auth_check(…) from auth_db, but taking the password from a PV – combines pv_proxy_authenticate() and pv_www_authenticate()
  • new module parameter use_domain that controls whether the domain part of URIs should be used or not to make the identity checks upon authentication with pv_auth_check(…)

• added new variant of www_authenticate() which takes method as a parameter
• new function is_subscriber(uri, dbtable, flags)
  • check if URI corresponds to a subscriber record in dbtable and load credentials for it

• support of no limitation on number of message chunks

• added raw query support for CQL format

• added support for row/table locking

• added new exported function is_in_subnet()

• added support for websocket transport layer

• added mq_size() function to get runtime size of mqueue in script
• added MI command to get current size of mqueue

• added support for websocket transport layer

• added support for websocket transport layer

• use usrloc record unique id to generate the OPTIONS keepalives, allowing to match its reply with location record
• option to remove UDP contacts that don't respond to OPTIONS keepalives
• added support for websocket transport layer
• add_contact_alias() can now be given ip addr port, and proto as parameters

• added support for websocket transport layer

• ability to connect to redis server via unix domain socket
• new cfg function redis_free() to free the redis reply on demand
• redis_cmd() can take variable number of parameters
• added redisc_exec_argv() function

• ported gruu and outbound API changes to p_usrloc module

• added support for websocket transport layer
• bind to outbound module (if loaded before path) to enable RFC 5626 Edge Proxy behaviour

• added new cfg function allow_address_group(addr, port) - return group of matching address and port record in address table
• added support for websocket transport layer

• option to provide the value to match the prefix as parameter to prefix_route()
• option to disable config file execution exit upon prefix match

• added support for websocket transport layer
• now uses DB row/table locking in DB only mode (where supported by the DB module)

• module parameter xcapauth_usedel_reason to allow admin to set the reason in Subscription-Status header when a user is deleted from contact list

• now uses DB row/table locking in DB only mode (where supported by the DB module)

• new pv class - $cnt(…) - to count the number of other array variables (e.g., $cnt($avp(x)) )
• added support for websocket transport layer
• new pv class - $version(key) - return attributes of the software version
  • key can be:
    • num - return version number
    • full - return all version string
    • hash - return git hash code and status
• new pv class - $af(key) - return address family for received message
  • key can be:
    • id: return integer representation for IPv4 or IPv6 (value of AF_INET and AF_INET6)
    • name: return “IPv4” or “IPv6”
• new pv class - $K(key) - return the value for internal constant keywords
  • key can be:
    • IPv4 - returns AF_INET
    • IPv6 - returns AF_INET6
    • UDP - return PROTO_UDP
    • TCP - return PROTO_TCP
    • TLS - return PROTO_TLS
    • SCTP - return PROTO_SCTP
  • it can be used to compare the values from other pvs, such as $af(id), $snd(af), $snd(proto)
• new transformation {s.stripto,c} - remove the prefix until meeting 'c'
  • “abcdef”{s.stripto,d} ⇒ “def”
  • the char can be given in a pv
• new function: typeof(pvar, vtype) - test the type of the pseudo-variable
• new function: not_empty(pvar) - test if the type is string and the value not empt

• added support for websocket transport layer
• new modparam to control requiring (and adding) outbound options-tag
• new modparam to control adding Flow-Timer: header to 200 OK responses to REGISTER requests
• new function lookup_branches(domain) - lookup the contacts for r-uri and additional branches - only branches that are clean (i.e., have only r-uri set) are used
• $ulc(…) returns ruid, reg-id and instance

• now uses DB row/table locking in DB only mode (where supported by the DB module)

• bind to outbound module (if loaded before rr) to enable RFC 5626 Edge Proxy behaviour

• allow script variables in set_rtp_proxy_set(…) parameter
• possibility to add ice relay candidates to sdp streams if new module parameter ice_candidate_priority_avp has been defined
• new flag “x” for automatic bridging between IPv4 and IPv6, based on the following assumption: “i” is the IPv4 interface and “e” is the IPv6 interface on the RTPProxy
• new flag 't' to rtpproxy_destroy function that makes it possible do delete whole call even when To tag is present in request/reply. In force_rtp_proxy the flag is ignored

• added support for websocket transport layer

• new function: sdp_remove_line_by_prefix(string)
  • removes lines from SDP body that matches given prefix

• added support for websocket transport layer

• support for storing the information to multiple sql tables
• HEPv3 support

• added support for websocket transport layer

• added support for websocket transport layer

• added t_is_set(“target”) function - returns true if the attribute specified by the target parameter is set for current transaction (e.g., failure_route, branch_route, onreply_route)
• new parameter to control remapping of 503 response to 500
• added support for websocket transport layer
• module parameter contacts_avp is now name of an xavp
• added new module parameter contact_flows_avp that must be defined if contacts_avp is defined
• added support for outbound by new script function t_next_contact_flows()
• enhanced t_replicate() so that if a NULL string is used, it replicates to $du

• uac_replace_[from|to]() in AUTO mode can use dialog module to restore From/To - in this mode the URIs are stored as dialog variables
• new paramter restore_dlg
  • if set to 1, then the module uses dialog variables to store the initial and new values for From/To headers
  • default set to 0 - otherwise all calls that have changes to From/To headers must be tracked by dialog

• for DB_ONLY module, run timer only when timer_interval > 0, to allow database to be cleaned up by external processes
• keep time of the last keepalive for natted UDP contacts

• support for org.openmobilealliance.xcap-directory auid
• use a static table to keep the list of supported auids - adding new auid requires an entry in this table and define of the internal type

• log_colors - new parameter to update the color scheme for core log levels

• -e - print colorful messages based on log level

• log_color - print colorful messages based on log level

• support for receiving/sending WebSocket frames over TCP/TLS
• support for building Via: and Record-Route: (including double-RR) headers for WebSockets
• added Colin Plumb's MD5 implementation to be fully GPL compliant
• update printing of socket lists to show the advertised address if set for the socket
• added DNSSEC support for DNS queries
  • this is available by setting the USE_DNSSEC compile flag. It requires libval-threads and libres (part of dnssec-tools dnssec-tools.org)
  • the custom resolvers were replaced by val_gethostbyname, val_gethostbyname and val_res_query (for SRV)

• support for WS and WSS transports in Via: lines
• support for “;transport=ws” in URIs

• added support for row/table locking (requires corresponding support in database modules)

• sercmd is installed as kamcmd
• kamctl
  • stats command can print a single group of statistics - groupid can be given as command parameter
• Makefile
  • added new target 'printvar' - prints the value of a Makefile variable whose name is provided in variable 'v', e.g.,: make printvar v=exclude_modules
  • added uninstall target - it prints hints and commands to perform uninstall when installation is done from sources

• use add_contact_alias()/handle_uri_alias() for NATed calls
• test if DBURL is already defined before defining it - allow to set it via command line with -A DBURL='…'
• kamailio-local.cfg is attempted to be loaded if exists in the same folder, allowing to set defines/paramters inside it without changing main kamailio.cfg