SIP SIMPLE Client SDK

h1. SIP SIMPLE Client SDK

Copyright (c) 2008-2012 AG Projects http://ag-projects.com

h2. LICENSE

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS "AS IS" AND ANY EXPRESS

OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN

NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY DIRECT, INDIRECT,

INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,

OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,

EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

SIP SIMPLE Client SDK is licensed under GNU General Public License version 3. 

h2. Derived works

A copy of the license is available at http://www.fsf.org/licensing/licenses/agpl-3.0.html

Works derived from SIP SIMPLE Client SDK must be licensed under GPLv3.

h2. Alternative License

For alternative non-GPL license and support contract you may contact AG Projects at sales-request@ag-projects.com

h2. Licenses for Dependencies

This document describes the licenses for the SIP SIMPLE client SDK and its

dependencies.

h3. Libxml2

Libxml2 is the XML C parser and toolkit developed for the Gnome project (but

usable outside of the Gnome platform), it is available under the MIT

License.

h3. Libxslt

Libxslt is a language for transforming XML documents into other XML

documents. It is available under the MIT License.

h3. GnuTLS

GnuTLS is a project that aims to develop a library which provides a secure

layer, over a reliable transport layer. Currently the GnuTLS library

implements the proposed standards by the IETF's TLS working group. The

library is licensed under the GNU Lesser General Public License version 2.1.

h3. Setuptools

Download, build, install, upgrade, and uninstall Python packages. It is

available under the Python Software Foundation License.

h3. Cython

A language that makes writing C extensions for the Python language as easy

as Python itself. Cython is available under the open source Apache License.

h3. Python-application

A collection of modules that are useful when building python applications.

Their purpose is to eliminate the need to divert resources into implementing

the small tasks that every application needs to do in order to run

successfully and focus instead on the application logic itself. Is available

under GNU Library or Lesser General Public License (LGPL).

h3. Dnspython

A DNS toolkit for Python. It supports almost all record types. It can be

used for queries, zone transfers, and dynamic updates. Dnspython originated

at Nominum where it was developed to facilitate the testing of DNS software.

Nominum has generously allowed it to be open sourced under a BSD-style

license.

h3. Lxml

Lxml is the most feature-rich and easy-to-use library for working with XML

and HTML in the Python language. A Pythonic binding for the libxml2 and

libxslt libraries. It is unique in that it combines the speed and feature

completeness of these libraries with the simplicity of a native Python API,

mostly compatible but superior to the well-known ElementTree API. The lxml

library is shipped under a BSD license.

h3. Twisted

A networking engine written in Python, supporting numerous protocols. It

contains a web server, numerous chat clients, chat servers, mail servers,

and more. The source code is available under a proprietary license (non GPL).

h3. Pylib

The pylib is a development support library featuring py.test, ad-hoc

distributed execution, micro-threads (greenlets) and uniform local path and

svn abstractions. Is provided under MIT License.

h3. Python-gnutls

Python wrapper for gnutls available under either GPL or Lesser General

Public License (LGPL).

h3. Eventlet_twisted

Eventlet makes asynchronous programming look like synchronous, thus

achieving higher signal-to-noise ratio than traditional twisted programs

have. It is available under the MIT License.

h3. Python-xcaplib

XCAP protocol, defined in RFC 4825, allows a client to read, write, and

modify application configuration data stored in XML format on a server. XCAP

maps XML document sub-trees and element attributes to HTTP URIs, so that

these components can be directly accessed by HTTP. An XCAP server used by

XCAP clients to store data like presence policy in combination with a SIP

Presence server that supports PUBLISH/SUBSCRIBE/NOTIFY SIP methods can

provide a complete SIP SIMPLE solution. The XCAP client example script

provided by this package can be used to manage documents on an XCAP server.

The software is available under either GPL or Lesser General Public License

(LGPL).

h3. Port audio

PortAudio is a free, cross platform, open-source, audio I/O library. It lets

you write simple audio programs in 'C' that will compile and run on many

platforms including Windows, Macintosh (8,9,X), Unix (OSS), SGI, and BeOS.

PortAudio is intended to promote the exchange of audio synthesis software

between developers on different platforms. The PortAudio licence is a plain

MIT licence.

h3. Pjlib

A small footprint, high performance, ultra portable abstraction library and

framework, used by PJSIP and PJMEDIA. PJLIB is about the only library that

PJLIB-UTIL, PJMEDIA, and PJSIP should depend, as it provides complete

abstraction not only to Operating System dependent features, but it is also

designed to abstract LIBC and provides some useful data structures too. A

cross-platforms portability and framework library. Available under GPL or an

alternative non-GPL license.

h3. Pjlib-util

PJLIB-UTIL is an auxiliary library providing supports for PJMEDIA and PJSIP.

Some of the functions/components in this library: small footprint XML

parsing, STUN client library, asynchronous/caching DNS resolver,

hashing/encryption functions, etc. Available under GPL or an alternative

non-GPL license.

h3. Pjnat

PJNATH is a new library, available in the SVN trunk, for helping the

applications with NAT traversal. It implements the latest specification of

Session Traversal Utilities for NAT (STUN), Obtaining Relay Addresses from

STUN (TURN), and Interactive Connectivity Establishment (ICE). Available

under GPL or alternative non-GPL license.

h3. Pjmedia

PJMEDIA is a complementary library for PJSIP to build a complete,

full-featured SIP user agent applications such as softphones/hardphones,

gateways, or B2BUA. Available under GPL or an alternative non-GPL license.

h3. Pjmedia-codec

A placeholder library to support various multimedia codecs. Available under

GPL or an alternative non-GPL license.

h3. Pjsip

A SIP protocol stack, the main bulding block for this project. Available

under GPL or an alternative non-GPL license. The non-GPL license is

available from its licensor for a one time fee.

h3. Eventlet

Eventlet is a networking library written in Python. It achieves high

scalability by using non-blocking io while at the same time retaining high

programmer usability by using coroutines to make the non-blocking io

operations appear blocking at the source code level. It is available under

MIT license.

h3. Greenlet

Lightweight in-process concurrent programming. The "greenlet" package is a

spin-off of Stackless, a version of CPython that supports micro-threads

called "tasklets". Tasklets run pseudo-concurrently (typically in a single

or a few OS-level threads) and are synchronized with data exchanges on

"channels". It is provided under MIT license.