A plugin for Tsung (http://tsung.erlang-projects.org/) for load-testing WebSockets servers.
Draws inspiration from the tsung_websocket project (https://github.com/onlychoice/tsung_websocket), various other Erlang WebSockets implementations and the Tsung plugin tutorial (http://www.process-one.net/en/wiki/Writing_a_Tsung_plugin/).
Why not just build on tsung_websockets? The reasons are:
Get the source and build dependencies for Tsung. On Debian use::
apt-get source tsung sudo apt-get build-dep tsung
For Ubuntu or other distros you'll have to download the source from upstream::
sudo apt-get install erlang-nox python-matplotlib gnuplot libtemplate-perl openssh-client openssh-server wget http://tsung.erlang-projects.org/dist/tsung-1.4.2.tar.gz tar xzf tsung-1.4.2.tar.gz
Copy the DTD and provided Erlang files from tsung_ws to the Tsung source tree::
cp tsung_ws/tsung-1.0.dtd tsung-x.x.x/ cp tsung_ws/include/ts_websocket.hrl tsung-x.x.x/include/ cp tsung_ws/src/tsung_controller/ts_config_websocket.erl tsung-x.x.x/src/tsung_controller/ cp tsung_ws/src/tsung/ts_websocket.erl tsung-x.x.x/src/tsung/
Compile Tsung::
cd tsung-x.x.x/ ./configure --prefix=$HOME/local/tsung make install
Tsung uses SSH to launch monitoring and controller processes, make sure your user can connect to localhost without needing a password (this assumes you have generated an SSH key before)::
cat $HOME/.ssh/id_rsa.pub >> $HOME/.ssh/authorized_keys
Start the example Python WebSockets server (you will need Twisted and a fork of txWebSocket) and run Tsung using the provided configuration file::
sudo apt-get install python-twisted sudo pip install -e git://github.com/wulczer/txWebSocket.git#egg=txWebSocket cd ../tsung_ws/ python math_server.py $HOME/local/tsung/bin/tsung -f websocket.xml -m /tmp/tsung.log start
After the run is done, you can generate an HTML report::
mkdir report cd report $HOME/local/tsung/lib/tsung/bin/tsung_stats.pl --stats /tmp/tsung.log
More error checking, handling continuation and binary frames, better logging.