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Network protocol for real-time sharing between graphical applications

Verse 2.0

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Verse 2.0 is network protocol for real-time sharing of 3D data. It is successor of old Verse protocol developed at KTH. Verse 2.0 is still in alpha version.


The source code of Verse library is licensed under BSD license. This library could be used for implementation of Verse client. The source code of Verse server is licensed under GNU GPL 2.0 license. For details look at files BSD-LICENSE and GPL-LICENSE.

Important links


Compilation of Verse 2.0 is tested only on Linux now. Some libraries and development tools are required. Porting to other UNIX like OS should be possible. Support for Mac OS X and other BSD like UNIXese is only experimental.



To compile Verse server, and example of Verse client open terminal, go to root of verse source code and type:

$ mkdir ./build
$ cd ./build
$ cmake ../
$ make
$ sudo make install

If you want to build debug version, then you have to run cmake with following parameter:

$ cmake -DCMAKE_BUILD_TYPE=Debug ../

If you want to build Verse with Clang, then you have to do more

$ export CC=/usr/bin/clang
$ export CXX=/usr/bin/clang++
$ mkdir ./build
$ cd ./build
$ cmake ../
$ make
$ sudo make install


  • ./config is directory with example of users.csv file
  • ./doc contains doxyfile for generated doxygen documentation
  • ./example contains source code of example Verse clients
  • ./include contains all .h files
  • ./pki contains example of certificate and private key
  • ./src contains source code
    • ./lib source code for library (used by client as well by server)
    • ./lib/api source code of API
    • ./lib/client source code specific for Verse clients
    • ./lib/common source code shared with Verse server and Verse client
    • ./server source code specified for Verse server
    • ./server/mongodb source code used for saving and loading data from MongoDB
    • ./python contains source code for Python module implemented in C
  • ./unittests contains source code of unit tests


The verse server and example of verse client is not necessary to install to the system. Before you want to run Verse server you should edit your "database" of users. Go to the ./config folder and edit users.csv:

$ cd ./config

and edit user.csv with your favorite text editor, e.g. vim:

$ vim users.csv


The Verse server can be executed from build directory:

$ ./bin/verse_server

Example of Verse client could be executed from this directory too:

$ ./bin/verse_client localhost

The example of Verse client and Verse server can be started with several arguments. For more details run programs with '-h' option.

When you want to try test Verse client implemented Python, then you have to set up system variable PYTHONPATH to include directory containing Python module "" :

$ export PYTHONPATH=/path/to/directory/with/verse/module

Then it is possible to run this client:

$ python3


It is possible to use Verse server without support of MongoDB, but all data are stored only in memory and when server is stopped, then all data are lost. For production purpose it is recommended to configure using MongoDB in server.ini file. Implementation of MongoDB is currently limited, because Verse server load all data to memory during start and saves all data to MongoDB, when server is stopped.


If you use firewall and you want to connect on Verse server, then you will need to open several ports. The Verse server listen on TCP port 12345 and it negotiate new UDP ports in range: 20000 - 20009 (this port numbers and port ranges will be possible to change in configuration files in the future).

When you use Linux OS, then you can use iptables for it. You should be familiar with iptables. If not, then read some documentation about iptables first. To open TCP port use something like this:

$ iptables -I INPUT 10 \ # this add this rule before 10th rule (change this!)
  -m state --state NEW \ # use this rule only for the first packet (optional)
  -s \        # allow connection only from some subnet (optional)
  -p tcp --dport 12345 \ # own opening of TCP port 12345
  -j ACCEPT              # accept this packet

To open UDP port in range 50000 - 50009 use something like this:

$ iptables -I INPUT 11 \
  -m state --state NEW \
  -s \
  -p udp --dport 50000:50009 \ # open UDP ports in range: 50000 - 50009

Verse server and all verse client can use IPv6. Configuration of ip6tables is very similar:

$ ip6tables -I INPUT 10 \
  -m state --state NEW \
  -p tcp --dport 12345 \

$ ip6tables -I INPUT 11 \
  -m state --state NEW \
  -p udp --dport 50000:50009


Main parts of Verse protocol were verified using Promela programming language and tool called Spin. For more details go to the directory ./misc/promela.


If you want to test Verse library, then you have to compile Verse with support for unit test framework called Check and then you can perform several unit tests. To run unit tests you have to go to the build directory and run make with target test:

$ cd ./build
$ make test


  • IRC: in channel #verse
  • Mailing list: [email protected]
  • Main developer: Jiri Hnidek
    • E-mail: [email protected]
    • Phone: +420 485 35 3695
    • Address: Studentska 2, 461 17, Liberec 1, Czech Republic

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