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Welcome to

WARNING:  As of January 7, 2022 we have officially migrated the reSIProcate wiki over to GitHub Wiki.  We will keep this Media Wiki up for a bit in-case there is any missing information found. Please note that there were, and still are, a number of pages that don't link to to any filled out content yet. This is not a problem with the porting process.
Please following this link for the most recent wiki contents:

This is the home of the reSIProcate projects.

The reSIProcate components, particularly the SIP stack, are in use in both commercial and open-source products. The project is dedicated to maintaining a complete, correct, and commercially usable implementation of SIP and a few related protocols.

Why choose reSIProcate

  • Extensive range of transports: UDP, TCP, TLS, DTLS and now WebSockets (WS/WSS) for WebRTC
  • Flexibility: use reSIProcate as low-level SIP parsing API, mid-level API for dialog management or high-level API for conversation management/rapidly developing softphones, PBXes and B2BUAs - and Plugin support using C++ and Python too
  • Depth: extensive coverage of many SIP-related RFCs, including features like OUTBOUND, Identity and more
  • Multiple platforms, including Linux, Windows, FreeBSD, Mac OS, Android, iPhone
  • Multiple CPUs supported, including mainstream x86 chipsets, Itanium, PowerPC, MIPS, ARM, S/390 and more (see here)
  • Generous BSD-like license terms
  • Thousands of test cases validated on every release on multiple platforms
  • First-class C++: understandable and extendable to meet your needs using OO-design
  • Convenient packages available on Debian, Fedora, Ubuntu and other platforms


Announcements Checkins
Add your company's logo to the We Use ReSIProcate page.

2020-11-10 - reSIProcate 1.13 coming soon. To preview, please checkout GitHub master branch. This includes VS2019 support and modernizing some uses of C++ and will require changes to your applications, see this blog post for guidance.

2020-05-09 - reSIProcate 1.12 released

2020-03-04 - Server had an emergency move due to power issues that caused hardware failure

2018-09-20 - reSIProcate 1.11 released. OpenSSL 1.1.1 is supported. Visual Studio 2017 project files updated for new library naming convention.

2018-09-18 - ASIO drop used by reTurn, reflow and recon has been updated from 1.10.6 to version 1.12.1 in GitHub repo

2016-03-19 - The major server upgrade is complete. Please send mail to webmaster or one of the resip* mailing-lists if you notice anything amiss.

2015-10-02 - reSIProcate 1.10.0 released

2015-05-21 - repro Presence Server available soon! - see the repro Presence Server Announcement page for details.

2014-09-16 - reSIProcate source code repository has migrated from SVN to Git, currently hosted on Github.

2014-02-11 - reSIProcate v1.9.0 has been released (including WebRTC support and other cool features). See the v1.9.0 release page for details of new features, including session accounting, Android builds, WebSocket/WebRTC, DSO, Python, UAS PRACK and more.

2014-01-18 - The Debian Project has chosen reSIProcate (repro SIP proxy and reTurn server) to power the federated SIP services for their community which includes over 1,000 leading free software developers.

2013-12-19 - Merry Christmas - Python scripting support has been added to the repro SIP proxy in reSIProcate. You can now implement routing logic in Python scripts without having to recompile the proxy.

2013-11-12 - UAS Prack support is finally arriving! - see the UAS Prack Announcement page for details.

2013-06-15 - Scott Godin has written a blog about Configuring repro for WebRTC

2013-04-05 - Daniel Pocock has written a blog about getting started with reSIProcate development on Linux

2013-02-15 - Explanation of WebRTC and SIP over WebSockets and how the reSIProcate project solves various pieces of the puzzle

2013-01-09 - Free, Open, Secure and Convenient Communications presentation for FOSDEM 2013 in Brussels, 2-3 February, co-presented by reSIProcate contributor Daniel Pocock, an interview is also available

2012-09-19 - repro SIP proxy overview presented at FreeSWITCH community weekly conference call.

2012-09-17 - New document posted: repro 1.8 Overview

2012-08-10 - has published a Federated VoIP Quick Start Guide based on repro, reTurn Server and ejabberd

2012-07-20 - Video and slides from the DebConf12 presentation about Free (as in Freedom) VoIP, Communications and Messaging - reTurn and repro demonstrated at 29 minutes into the video


Commits: -remove boost package from VS2022 tfm projects (not needed) \
<pre style="white-space: pre-wrap; width: 81ex;">-remove boost package from VS2022 tfm projects (not needed)-update reTurn readme, since boost is not required</pre>\
Commits: -change all paths to nuget packages imports to be relative to $(Solut… \
<pre style="white-space: pre-wrap; width: 81ex;">-change all paths to nuget packages imports to be relative to $(SolutionDir) so that projects can be used in other solutions that ex...\
Commits: -convert TFM VS2019 projects to use OpenSSL from NuGet \
<pre style="white-space: pre-wrap; width: 81ex;">-convert TFM VS2019 projects to use OpenSSL from NuGet-fix Visual Studio (all supported versions) compilation error with TFM's...\
Commits: Merge pull request #300 from bwalden/vs-sln-fix \
<pre style="white-space: pre-wrap; width: 81ex;">Merge pull request #300 from bwalden/vs-sln-fixVS solution configuration fixes</pre>\
Commits: Merge pull request #301 from resiprocate/b-sgodin-openssl-nuget \
<pre style="white-space: pre-wrap; width: 81ex;">Merge pull request #301 from resiprocate/b-sgodin-openssl-nugetGet OpenSSL from NuGet instead of contrib folder for VS2019 and VS202...\

Overviews of the Projects

The reSIProcate SIP stack

The repro proxy/registrar

The Dialog Usage Manager (DUM) (a User Agent API above the stack)

The TFM Test Framework

The reTurn STUN/TURN Client and Server

The recon Conversation Manager (a User Agent API with media support above DUM)

Current Release

See the release announcements for the latest source code release

All users of reSIProcate are encouraged to use the most recent release.

Getting Started

The reSIProcate projects moved to in November 2006. If you still have working copies that need to be migrated, see the transition page for instructions.