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This project uses Break Versioning as of Aug 16, 2014.

v1.17.0 - 2022 Jun 13

[com.taoensso/sente "1.17.0"]

This is a non-breaking maintenance and feature release.
See here for recommended steps when updating any Clojure/Script dependencies.

Identical to v1.17.0-RC2.

Changes since 1.16.2

  • Updated dependencies

New since 1.16.2

  • [#398] Enable binary support for custom un/packers (@rosejn, @ptaoussanis)
  • [#351 #393][New] Allow CSRF-token to be a function (@eneroth, @ptaoussanis)
  • [#390] [Aleph adapter] Add support for websocket-connection options (@KaliszAd)
  • [#396][Readme] Add link to Retit+JS example (@dharrigan)
  • [#395][Readme] Add link to new SPA example (@FiV0)

Fixes since 1.16.2

  • [#403][Fix] Start ws-kalive loop only after conn is established (@Snurppa)

v1.17.0-RC2 - 2022 Jun 1

[com.taoensso/sente "1.17.0-RC2"]

This is a non-breaking maintenance and feature release.
See here for recommended steps when updating any Clojure/Script dependencies.

Changes since 1.16.2

  • Updated dependencies

New since 1.16.2

  • [#398] Enable binary support for custom un/packers (@rosejn, @ptaoussanis)
  • [#351 #393][New] Allow CSRF-token to be a function (@eneroth, @ptaoussanis)
  • [#390] [Aleph adapter] Add support for websocket-connection options (@KaliszAd)
  • [#396][Readme] Add link to Retit+JS example (@dharrigan)
  • [#395][Readme] Add link to new SPA example (@FiV0)

Fixes since 1.16.2

  • [#403][Fix] Start ws-kalive loop only after conn is established (@Snurppa)

v1.16.2 - 2021 Feb 26

[com.taoensso/sente "1.16.2"]

This is a non-breaking minor maintenance release.
See here for recommended steps when updating any Clojure/Script dependencies.

New since 1.16.1

  • Add public ring-allow-origin? util fn

Changes since 1.16.1

  • Updated dependencies (non-breaking)

v1.16.1 - 2021 Jan 31

[com.taoensso/sente "1.16.1"]

This is a minor maintenance release.
See here for recommended steps when updating any Clojure/Script dependencies.

Fixes since 1.16.0

  • [#385] Fix: pass ring-req to authorized?-fn (@viesti)

New since 1.16.0

  • chsk server: add :?unauthorized-fn option

v1.16.0 - 2020 Sep 19

[com.taoensso/sente "1.16.0"]

Major feature release. Should be non-breaking, but see here for recommended steps when updating any Clojure/Script dependencies.

Same as v1.16.0-RC1, v1.16.0-alpha2.

Changes since v1.15.0

  • [NB] http-kit users must now use >= http-kit v2.4.0 (v2.5.0 is latest as of writing)

New since v1.15.0

  • [#371 #375] Add Jetty 9 server adapter (@wavejumper)
  • [#372] Add ring-undertow server adapter (@nikolap)
  • [#275 #374] Add Clj WebSocket client support (@kaosko)
  • Add optional auth fn to make-channel-socket-server! (@kaosko @ptaoussanis)
  • [#356] Expose send-buffers_ as implementation detail (@kaosko)
  • [#359 #360] Add :json-verbose format to Transit packer (@p-himik)
  • [#362 #363] Allow additional keys in event-msg maps (@jjttjj)
  • [#365] README: incl. example CSRF code (@mattford63)

Fixes since v1.15.0

  • [#366 #353 #358] Make make-channel-socket-client! respect host option (@Rkiouak)
  • Use new http-kit v2.4.0 server API internally to fix possible race conditions
  • [#357 #247] Fix for React Native (@currentoor)

v1.16.0-RC1 - 2020 Sep 10

[com.taoensso/sente "1.16.0-RC1"]

Same as v1.16.0-alpha2.

See here for recommended steps when updating any Clojure/Script dependencies.

v1.16.0-alpha2 - 2020 Aug 24

[com.taoensso/sente "1.16.0-alpha2"]

Major feature release. Should be non-breaking, but users of http-kit will need to update to >= http-kit v2.4.0.

Tip! Recommended steps after any significant dependency update:

  1. Run lein deps :tree (or equivalent) to check for possible dependency conflicts.
  2. Run lein clean (or equivalent) to ensure no stale build artifacts remain.
  3. Please test carefully before running in production!

Some info on how to resolve dependency conflicts here.

Changes since v1.15.0

  • [NB] http-kit users must now use >= http-kit v2.4.0.

New since v1.15.0

  • [#371 #375] Add Jetty 9 server adapter (@wavejumper).
  • [#372] Add ring-undertow server adapter (@nikolap).
  • [#275 #374] Add Clj WebSocket client support (@kaosko).
  • Add optional auth fn to make-channel-socket-server! (@kaosko @ptaoussanis).
  • [#356] Expose send-buffers_ as implementation detail (@kaosko).
  • [#359 #360] Add :json-verbose format to Transit packer (@p-himik).
  • [#362 #363] Allow additional keys in event-msg maps (@jjttjj).
  • [#365] README: incl. example CSRF code (@mattford63).

Fixes since v1.15.0

  • [#366 #353 #358] Make make-channel-socket-client! respect host option (@Rkiouak).
  • Use new http-kit v2.4.0 server API internally to fix possible race conditions.
  • [#357 #247] Fix for React Native (@currentoor).

v1.15.0 - 2019 Nov 27

[com.taoensso/sente "1.15.0"]

Just updates some dependencies. Should be non-breaking.

  • [#355] Fix: Bump encore dependency to fix deprecated goog.structs/Map issue.

v1.14.0 - 2019 Oct 19

[com.taoensso/sente "1.14.0"]

As v1.14.0-RC2, but also includes:

  • [#307] New: Add server adapter for Macchiato Framework on Node.js (@theasp)
  • [#137 #338] New: Add support for origin/referrer checking (@eerohele)
  • [#349 #348] New: Add support for specifying chsk port when connecting from client (@pieterbreed)
  • [#337] Fix: Incorrect value (only udt) swapped into conns_ (@osbert)
  • [#341] Fix: Make cljsbuild output-to resources/public/main.js directly (@shaolang)

v1.14.0-RC2 - 2019 Jan 12

[com.taoensso/sente "1.14.0-RC2"]

This is a CRITICAL bugfix release, please upgrade ASAP

  • [#137] SECURITY FIX, BREAKING: fix badly broken CSRF protection (@danielcompton, @awkay, @eerohele), more info below

My sincere apologies for this mistake. Please write if I can provide more details or any other assistance. Further testing/auditing/input very much welcome! - @ptaoussanis

Security bug details

  • All previous versions of Sente (< v1.14.0) contain a critical security design bug identified and reported by @danielcompton, @awkay, @eerohele. (Thank you to them for the report!).
  • Bug: Previous versions of Sente were leaking the server-side CSRF token to the client during the (unauthenticated) WebSocket handshake process.
  • Impact: An attacker could initiate a WebSocket handshake against the Sente server to discover a logged-in user's CSRF token. With the token, the attacker could then issue cross-site requests against Sente's endpoints. Worse, since Sente often shares a CSRF token with the rest of the web server, it may be possible for an attacker to issue cross-site requests against the rest of the web server (not just Sente's endpoints).

Security fix details

  • The fix commit stops the CSRF token leak, introducing a BREAKING API CHANGE (details below).
  • Sente will now (by default) refuse to service any requests unless a CSRF token is detected (e.g. via ring-anti-forgery).

Breaking changes

make-channel-socket-client! now takes an extra mandatory argment

It now takes an explicit csrf-token that you must provide. The value for the token can be manually extracted from the page HTML (example).

In most cases the change will involve three steps:

  1. You need to include the server's CSRF token somewhere in your page HTML: example.
  2. You need to extract the CSRF token from your page HTML: example.
  3. You'll then use the extracted CSRF token as an argument when calling make-channel-socket-client!: example.

Client-side :chsk/handshake event has changed

It now always has nil where it once provided the csrf-token provided by the server.

   I.e. before: [:chsk/handshake [<?uid> <csrf-token> <?handshake-data> <first-handshake?>]]
         after: [:chsk/handshake [<?uid> nil          <?handshake-data> <first-handshake?>]]

Most users won't be affected by this change.

v1.13.1 - 2018 Aug 22

[com.taoensso/sente "1.13.1"]

This is a hotfix release, should be non-breaking

  • [#327 #326] Fix broken ws->ajax downgrade logic (@michaelcameron)

v1.13.0 - 2018 Aug 4

[com.taoensso/sente "1.13.0"]

This is a maintenance release, should be non-breaking in most cases

  • Updated all dependencies

v1.12.1 - 2018 Aug 4

[com.taoensso/sente "1.12.1"]

This is a non-breaking maintenance release

  • [#323] Fix: Work correctly with new versions of ring-anti-forgery (@timothypratley)

v1.12.0 - 2017 Dec 10

[com.taoensso/sente "1.12.0"]

This is a non-breaking bugfix release which updates some dependencies

  • [#315 #314 #311] Fix: Updated dependencies (@theasp)

v1.11.0 - 2016 Oct 13

[com.taoensso/sente "1.11.0"]

This is a non-breaking feature release

  • [#255] New: Client chsk state: now include cause of chsk disconnections
  • [#263] New: Client chsk state: add :udt-next-reconnect key (@danielcompton)
  • [#259] New: Allow clients to detect sudden abnormal disconnects (e.g. airplane mode)
  • [#265] New: Add :simple-auto-threading? option to routers
  • [#257] New: Add disconnect and reconnect buttons to ref example (@danielcompton)
  • [#270] Impl: Better Ajax broadcast reliability on very poor connections
  • [#254] Fix: Make sure pending retries are subject to normal cancellation

v1.10.0 - 2016 Jul 24

[com.taoensso/sente "1.10.0"]

This is a minor, non-breaking release focused on moving from .cljx -> .cljc

  • [#242] Impl: Switch from .cljx to .cljc (@danielcompton)
  • [#243] Impl: Add support for nodejs clients (@DaveWM)
  • [#246] New: Add :protocol parameter to make-channel-socket-client! (@tiensonqin)
  • [#247] New: SENTE_ELIDE_JS_REQUIRE environment var for use with React Native

v1.9.0 - 2016 Jul 6

[com.taoensso/sente "1.9.0"]

This is a particularly substantial release focused on design refactoring, and a number of new features.

  • BREAKING: Client-side event changed: [:chsk/state <new-state-map>] -> [:chsk/state [<old-state-map> <new-state-map>]]
  • BREAKING: :ws-kalive-ms, :lp-timeout-ms opts moved from client-side to server-side make-channel-socket! fn
  • BREAKING: Drop experimental (and rarely used) flexi packer
  • New: Add Aleph server adapter (@sorenmacbeth) [#236]
  • New: Client-side :chsk/state events may now contain :last-ws-error, :last-ws-close keys [#214]
  • New: Add support for more flexible conn-type upgrade/downgrade [#201]
  • New: Add new goodies to reference example
  • Impl: Allow server to garbage collect long-polling conns [#150 #159]
  • Impl: Server-side ping to help gc non-terminating WebSocket conns [#230]
  • Impl: Servers now drive WebSocket identification (more robust, flexible)
  • Impl: Clojure-side Transit performance optimizations [#161]
  • Fix: Fixed faulty Nodejs Ajax adapter behaviour
  • Fix: Fix for spurious Firefox unload->onclose calls [#224]
  • Fix: Clear the keep alive timer in chsk-disconnect! [#221 @theasp]

v1.8.1 - 2016 Mar 4

[com.taoensso/sente "1.8.1"]
  • Hotfix: add missing event? alias

v1.8.0 - 2016 Feb 16

This is a major non-breaking feature release, enjoy! :-)

  • Change: chsk-reconnect! calls now always attempt reconnection immediately [#167]
  • Change: Ref example has been refactored, simplified
  • Change: Ref example has been split into client+server namespaces [#192 @theasp]
  • New: Added server adapters for Node.js (generic, Express, Dog Fort) [#194 @theasp @whamtet]
  • New: Added official ajax-lite alias (Sente Ajax req util)
  • New: Added "carpet" example [#187 @ebellani]
  • New: CSRF token header is now compatible with ring.middleware defaults [#198 @theasp]
  • Impl.: Decoupled notion that clj<=>server, cljs<=>client [thanks to @theasp for assistance]
  • Impl.: Refactor web-server adapter interfaces
[com.taoensso/sente "1.8.0"]

v1.7.0 - 2015 Dec 8

As v1.7.0-RC1 with some updated dependencies, improved reference example

[com.taoensso/sente "1.7.0"]

v1.7.0-RC1 - 2015 Sep 28

This is a significant non-breaking feature release. Includes an important fix for Immutant users.

  • New: add nginx-clojure server adapter [#160 @xfeep]
  • New: add :error-handler option to standard chsk routers
  • New: make-channel-socket! now accepts an optional :params map [#158 #135 @danielcompton]
  • New: include :client-id with Ajax long-polling requests [#155 @akhudek]
  • New: cb-error? convenience fn = (complement cb-success?)
  • Fix: Immutant v2.1.0+ adapter now supports timeouts to prevent lp socket leaks [#150 @tobias]
[com.taoensso/sente "1.7.0-RC1"]

v1.6.0 - 2015 Aug 7

This is a significant maintenance+feature release which MAY BE BREAKING due to a mandatory dependency bump to Timbre v4 (see note 1 for details).

  • BREAKING: switch to Timbre v4 for cross-platform logging [note 1]
  • DEPRECATED: chsk-url-fn, make cross-domain chsks easier to configure [#50 #136]
  • Implementation: refactor default chsk-router
  • New: add :uid to ev-msg's handled by Sente server [@danielcompton #147]
  • New: add support for Transit packer opts [@estsauver #145]
  • New: add option to leave :chsk/recv events unwrapped [#151]
  • New: add client-side backoff opts [#125]
  • Fix: switch to encore edn reader/writer (fix issue with printing large data structures under REPL)
  • Ref example: add run command [@estsauver #144]
[com.taoensso/sente "1.6.0"]

Notes

[1] Please see https://github.com/ptaoussanis/timbre/releases/tag/v4.0.0 for Timbre v4's migration checklist. Sorry for the hassle! This one-off change allows Sente to inherit all of Timbre's logging goodness (full logging config, ns filtering, production logging call elision, etc.). Migration usu. consists of a 1 or 2 line change if you're not using custom Timbre appenders.

v1.5.0 - 2015 Jun 11

This is a non-breaking maintenance release

  • New: support Ajax CORS via new :with-credentials? opt [#130 @bplatz]
  • Fix: bad missing-middleware error logging call format
  • Implementation: update dependencies
[com.taoensso/sente "1.5.0"]

v1.4.1 - 2015 Mar 11

Trivial, non-breaking release that adds a pair of optional web-adapter aliases to help make examples a little simpler.

[com.taoensso/sente "1.4.1"]

v1.4.0 - 2015 Mar 9

This is a major BREAKING release. Biggest change is added support for web servers besides http-kit (only Immutant for now). A big thanks to @tobias for his assistance with the Immutant support.

  • BREAK: added support for web servers besides http-kit (see migration instructions) [@tobias #2]
  • BREAK: removed support for nil user-id broadcasts (previously deprecated in v1.3.0) [#85] [1]
  • Fix: temporary workaround for core.async router error-catching issues [@shaharz #97]
  • New: throw clear compile-time exception on encore dependency issues
  • New: enable clients to distinguish between auto/manual reconnects [@sritchie #105] [2]
  • New: allow arbitrary user-provided handshake data with :chsk/handshake events [@whodidthis #110 #111] [3]
  • Ref example: some clarifications re: how to authenticate users
[com.taoensso/sente "1.4.0"]

Notes

[1]: Server-side (chsk-send! <user-id> <event>) calls used to broadcast to all nil-uid users when <user-id> was nil. Now you must use the special :sente/all-users-without-uid keyword for these cases. The new behaviour helps prevent unintentional broadcasting.

[2]: :chsk/state event data now contains :requested-reconnect? val.

[3]: Server-side make-channel-socket! fn now takes an optional :handshake-data-fn (fn [ring-req]) opt and client-side's ch-recv now receives [:chsk/handshake [<?uid> <?csrf-token> <?handshake-data>]] events.

MIGRATION INSTRUCTIONS (from any version < v1.4.0)

  1. Http-kit is no longer an automatic Sente dependency. To continue using http-kit, add [http-kit "2.1.19"] to your project.clj :dependencies.
  2. Your Clojure-side make-channel-socket! call must now take a web server adapter as first argument. To continue using http-kit, add [taoensso.sente.server-adapters.http-kit] to your Clojure-side ns form's :require entries and pass taoensso.sente.server-adapters.http-kit/http-kit-adapter as the first arg to make-channel-socket!.

So:

[http-kit "2.1.19"] ; <--- Add to project.clj :dependencies

(ns my-clj-ns
  (:require
    ;; Other stuff
    [taoensso.sente.server-adapters.http-kit] ; <--- Add this entry
    ))

;; (sente/make-channel-socket! <opts-map>) ; Old Clojure-side chsk constructor
(sente/make-channel-socket!
  taoensso.sente.server-adapters.http-kit/http-kit-adapter ; <--- Add this arg
  <opts-map) ; NEW Clojure-side chsk constructor

This change is a once-off nuisance that'll allow us the freedom of supporting a wide range of web servers in the future. Interested in a web server besides http-kit or Immutant? Am now welcoming PRs to support additional web servers.

Finally, please see the updated reference example project for instructions on switching to an alternative web server like Immutant.

/ Peter Taoussanis

v1.3.0 / 2015 Jan 17

This is a non-breaking maintenance release focused on general housekeeping + on adding some user-id flexibility.

  • DEPRECATED [#85]: Server->user broadcasts should now use :sente/all-users-without-uid instead of nil uid when intending to broadcast to users without a user id. The new behaviour is less accident prone.
  • CHANGE [#84, #95]: Improve error reporting in the case of missing Ring middleware.
  • FIX [#94]: ClojureScript dependency is now :provided to keep it from being unnecessarily pulled into JARs, etc (@zentrope).
  • NEW [#82]: Server-side :user-id-fn's Ring request now includes a :client-id arg provided by clients.
  • Various doc+example improvements.

v1.2.0 / 2014 Oct 6

This is a maintenance release that is non-breaking UNLESS:

  1. You are not using the default server-side chsk router.
  2. You are relying on (?reply-fn <args>) to log a warning rather than throw an NPE for nil ?reply-fns.
  • FIX: Broken chsk router shutdown due to http://goo.gl/be8CGP.
  • BREAKING [#77]: No longer substitute a dummy (logging) ?reply-fn for non-callback events.

v1.1.0 / 2014 Sep 7

  • FIX: taoensso/timbre#79 (unnecessary deps being pulled in).
  • NEW: Added client-side ajax-call utility.
  • NEW: Added keys to event-msgs: :id (event-id), :?data (event-?data).

v1.0.0 / 2014 Sep 2

This is a MAJOR release with a bunch of improvements, most notably efficiency improvements. It is BREAKING if-and-only-if you read from the client-side :ch-recv channel directly.

  • NEW: Added chsk-destroy! client-side API fn.
  • NEW [#60]: Several transfer format efficiency improvements (faster, less bandwidth use).
  • NEW [#12], [#59], [#66], [#67]: Added :packer option to client+server-side make-channel-socket! fns. This can be used to plug in an arbitrary de/serialization format. The default continues to be edn (which gives the best common-case performance and doesn't require any extra dependencies). An experimental Transit-based packer is included which allows manual + smart (automatic) per-payload format selection. See the updated reference example for details. Big thanks to @ckarlsen for getting the work started on this!
  • DEPRECATED: start-chsk-router-loop!->start-chsk-router! (both client + server-side). There's a new event-handler format that's consistent between the client + server, and that makes componentizing Sente considerably easier. See the updated reference example for details. Big thanks to @hugoduncan for his work & input on this!
  • CHANGE: Client-side router now traps+logs errors like the server-side router.
  • CHANGE: General code improvements/refactoring, stuff I'd been meaning to do forever and wanted to get in before a v1 release.
  • CHANGE: Further improvements to the reference example to make it play better with LightTable.
  • BREAKING: the client-side :ch-recv channel now receives event-msg (maps) rather than event (vectors). (:event <event-msg>) will return the event-msg's event.

v0.15.1 / 2014 July 21

Hotfix focused on adjusting default options for Heroku users.

v0.15.0 / 2014 July 11

Minor, non-breaking update.

  • CHANGE: Support for new (namespaced) Ring Anti-Forgery session key (@DomKM).
  • CHANGE: [chsk/uidport-close] event now triggers only 5 seconds after a WebSocket channel is closed (same as Ajax channels). Helps prevent unnecessary noise during window refresh, etc.
  • NEW [#50]: Added a :chsk-url-fn option to client-side make-channel-socket! fn for full URL control.

v0.14.1 / 2014 May 18

Minor, non-breaking update.

  • FIX: Handshakes were interfering with singleton WebSocket callback replies.

v0.14.0 / 2014 May 16

Minor, non-breaking update.

  • FIX: WebSocket reconnect exponential backoff wasn't being reset correctly.
  • [#39] FIX: Race condition affecting buffered server>user events (@smichal).
  • NEW: [chsk/uidport-open], [chsk/uidport-close] server-side events generated on a uid connecting/disconnecting (any protocol). As before, you can watch the connected-uids atom for more detailed info.

v0.13.0 / 2014 May 8

This is a major release focused on simpler out-the-box setup + easier integration with a wide range of login/auth types.

  • BREAKING: API fns removed: chsk-type, chsk-open?.
  • BREAKING: The [:chsk/state] event form has changed for added flexibility.
  • NEW: Added watchable, read-only :state atom to client-side make-channel-socket! fn result. Among other things, this atom contains any user-id provided by the server.
  • NEW: It is now possible to push server>user async events to clients without a user-id by providing a nil user-id to the server-side chsk-send! fn (previously nil uids would throw an assertion error). In particular, this means it's now possible to broadcast to users that aren't logged in.
  • NEW: Server-side make-channel-socket! fn has picked up a :csrf-token-fn option which defaults to compatibility with the Ring-Anti-Forgery middleware.
  • NEW: Clients are now entirely self configuring. It's no longer necessary to transfer any state (like csrf-token or user-id) from the server; this'll be done automatically on channel socket handshake.
  • NEW: Added a chsk-reconnect! API method that can be called to easily re-establish a channel socket connection after a login or auth change. An example login procedure has been added to the reference example project.
  • CHANGE: The example project now randomly selects :ajax or :auto connection mode.

As always, feedback welcome on any changes here. Have fun, cheers! - Peter

v0.12.0 / 2014 May 1

  • NEW: server- and client-side start-chsk-router-loop! fns now return a (fn stop! []).
  • [#37] FIX broken [:chsk/close] typo for Ajax connections (@sritchie).

v0.11.0 / 2014 Apr 26

  • CHANGE: Removed vestigial server-side events: [:chsk/uidport-open _], [:chsk/uidport-close _].
  • CHANGE: Significantly improved Ajax broadcast performance by interally making use of connected-uids data.
  • NEW: [:chsk/close] event can now be sent to clients to disconnect them (this feature was previously experimental + undocumented).
  • FIX: connected-uids was incorrectly marking multi-client users as disconnected when any one of their clients disconnected.

v0.10.1 / 2014 Apr 17

  • [#27] FIX broken :advanced mode compilation (@ostronom).

v0.10.0 / 2014 Apr 17

  • BREAKING CHANGE: ClojureScript (client-side) make-channel-socket! fn signature has changed:
;; OLD (note two opts maps):
(make-channel-socket! {:csrf-token "foo" :has-uid? true} {:type :auto}) ; Old
;; NEW (note single opts map):
(make-channel-socket! {:csrf-token "foo" :has-uid? true :type :auto}) ; New
  • [#22] NEW: Server-side make-channel-socket! constructor now supports an optional :user-id-fn (fn [ring-req]) -> user-id setting (@sritchie).
  • [#23] NEW: Server-side make-channel-socket! now returns a :connected-uids atom.

v0.9.0 / 2014 Mar 29

This is a non-breaking release focused on efficiency+reliability improvements for very high stress environments.

  • Documentation improvements.
  • CHANGE: server>user Ajax push is now more reliable against dodgy connections.
  • NEW: server>user sends are now automatically+transparently batched for greater efficiency in very high throughput environments. The server-side make-channel-socket! has picked up some knobs for this, but the defaults are sensible.

v0.8.2 / 2014 Mar 7

  • NEW: Copy improved error messages to server-side API.
  • CHANGE: Provide entire, unfiltered Ring request map to server-side API.

v0.8.1 / 2014 Mar 4

  • NEW: Improved error messsages for malformed events.

v0.8.0 / 2014 Feb 24

  • NEW: Initial public release.