Belle-sip is a modern library implementing SIP (RFC3261) transport, transaction and dialog layers. It is written in C, with an object oriented API. It also comprises a simple HTTP/HTTPS client implementation.

Copyright © Belledonne Communications

Belle-sip is dual licensed, and is available either :

• under a GNU/GPLv3 license, for free (open source). Please make sure that you understand and agree with the terms of this license before using it (see LICENSE.txt file for details).

• under a proprietary license, for a fee, to be used in closed source applications. Contact Belledonne Communications for any question about costs and services.

• RFC3261 compliant implementation of SIP parser, writer, transactions and dialog layers.
• SIP transaction state machines with lastest updates (RFC6026).
• fully asynchronous transport layer (UDP, TCP, TLS), comprising DNS resolver (SRV, A, AAAA).
• full dual-stack IPv6 support.
• automatic management of request refreshes with network disconnection resiliency thanks to the "refresher" object.
• supported platforms: Linux, Mac OSX, windows XP+, iOS, Android, Blackberry 10.
• HTTP/HTTPS client implementation.

These are required to generate a C sourcefile from SIP grammar using antlr3 generator:

• Java SE or OpenJDK
• antlr 3.4

• libantlr3c version 3.2 or 3.4 - but its source is included in belle-sip, no need to install it.
• bctoolbox (git://git.linphone.org/bctoolbox.git or https://gitlab.linphone.org/BC/public/bctoolbox)

cmake .
make
make install

If you edit the .g files in the grammars directory you'll need to regenerate the sources.

cd src/antlr3c
./generate_grammar_sources.py

• CMAKE_INSTALL_PREFIX=<string> : install prefix.
• CMAKE_PREFIX_PATH=<string> : column-separated list of prefixes where to find dependencies.
• ENABLE_TESTS=NO : disable non-regression tests.
• ENABLE_STRICT=NO : build without strict build options like -Wall -Werror
• ENABLE_SHARED=NO : do not build the shared library
• ENABLE_STATIC=NO : do not build the static library

Our CMake scripts may automatically add some paths into research paths of generated binaries. To ensure that the installed binaries are striped of any rpath, use -DCMAKE_SKIP_INSTALL_RPATH=ON while you invoke cmake.

Rpm packaging belle-sip can be generated with cmake3 using the following command: mkdir WORK cd WORK cmake3 ../ make package_source rpmbuild -ta --clean --rmsource --rmspec belle-sip--.tar.gz