Previous devel, current stable, version was 5.0.x (released on February 27, 2017), see what was new in that release at:

• http://www.kamailio.org/wiki/features/new-in-5.0.x

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

• split from acc module
• https://kamailio.org/docs/modules/devel/modules/acc_diameter.html

• https://kamailio.org/docs/modules/devel/modules/app_sqlang.html

• https://kamailio.org/docs/modules/devel/modules/call_obj.html

• https://kamailio.org/docs/modules/devel/modules/evrexec.html

• https://kamailio.org/docs/modules/devel/modules/ims_diameter_server.html

• https://kamailio.org/docs/modules/devel/modules/keepalive.html

• https://kamailio.org/docs/modules/devel/modules/phonenum.html

• https://kamailio.org/docs/modules/devel/modules/topos_redis.html

• rpc app_lua.api_list command

• support for variables in parameters of cfg functions

• added SHA384 as hashing option

• added $cfg(route) - return name of routing block for crt action

• added rpc command db_text.query to do db query
• added db_delim parameter - specify field delimiter

• implemented insert_update() API function

• new parameter to open some database in read-only
• new parameter to set database journal mode

• $dlg_ctx(timeout_route) returns route block name

* added option to use non-locking workers

• support to sync with multi contacts per message
• new parameter batch_max_msg_size

• use keepalive module to monitor GW/destinations (for sort_order 0)

• added functions to remove items using variables
• implemented starts-with matching for remove functions

• added a custom_user_avp parameter, to allow a custom From user via avp

• allow regex in RURI field

• new naptr_query() cfg function

• added $kzRK to accdess routing key of the payload
• added json.count transformation

• added lcr.load_gws rpc function
• added possibility to match caller URI userpart to a mtree tvalue

• added REDIS-Cluster support
• added pipeline support for REDIS commands
• new feature to disable server on failure
• added flush_on_reconnect parameter
• enhanceed access to REDIS replies - support to access array within arrays

• option to add two path headers and use alias like received value
  • enable_r2 - add two path headers, one for incoming socket and one for outgoing socket
  • received_format - parameter to control if received value should be in sip uri (as so far) or in contact-alias param format

• new parameter load_backends
  • control what backends should be loaded (1 - address table; 2 - trusted table; 4 - allow file; 8 - deny file)

• added pres_has_subscribers() function
• added cseq_offset parameter

• $env(…) - new class of cfg variable to get values for environment variables
• print cfg line for string transformation errors
• new variable - $hdrc(HName) - return the number of headers matching the name with HName
• added received ip/port pvars for advertised ip/port - $RAi, $RAp
• $siz - return source ip, with enclosing square brackets for ipv6
• $Ru - URI format for local socket where the SIP message was received, without trasport parameter for UDP
• $Rut - URI format for local socket where the SIP message was received, always with transport parameter
• $RAu - URI format for local socket where the SIP message was received, without trasport parameter for UDP, using the advertised address if availabe
• $RAut - URI format for local socket where the SIP message was received, always with transport parameter, using the advertised address if available

• added flags to disable caller and/or callee PUBLISH

• added support to use outbound proxy for PUBLISH requests

• added direct_reply_to module parameter
• added url module parameter

• apply method_filtering only on initial requests without to-tag

• added $hep(dst_ip) variable to get hep's message destination IP

• the digit terminator is made optional on set_destination

• add support for HEPv3
• add hlog() to send logs to homer

• added is_alphanum(v) function
  • check if a string value contains only digits or alphabetic characters
• added is_alphanumex(tval, eset) function
  • check if tval contains only alphanumeric characters or those from the eset parameter

• basic level of libressl compatibility (for openssl v1.0.x)

• execute event_route[topoh:msg-outgoing] - executed when a message is going to be sent out
  • if drop is used, then the message is no longer processed with topoh
• option to disable uri prefix checks (uri_prefix_checks parameter)

• use a stack of structures for faked_env()

• new vars - $T(id_index_n) and $T(id_label_n)
  • similar to $T(id_index) and $T(id_label), but if transaction doesn't exist yet, it is created

• new parameter storage - specify the storage type to be used (default is database)

• new variant with subscriber and realm params for check_uri()

• new parameter db_load: enable/disable loading from the database on mod_init
• new parameter db_insert_update: insert into table, update on duplicate key
• added more attributes to the result of ul.dump

• ip_free_bind - control if Kamailio should attempt to bind to non local ip
• tcp_reuse_port - reuse tcp sockets

• support for parsing the Call-Info header
• do not terminate on harmless SIGCHLD (e.g., when kemi python scripts create and terminate new processes)
• added function to return route block name from crt action
• compile with system malloc for pkg if MEMPKG=sys
• if MEMDBGSYS=1, the use a debug variant for system malloc

• added srv command
  • shortcuts to RPC commands to print sockets, aliases and available RPC commands