This directory contains example Engine.IO applications.

A basic application in which the client sends messages to the server and the server responds.

A port of the latency application included in the official Engine.IO Javascript server. In this application the client sends ping messages to the server, which are responded by the server with a pong. The client measures the time it takes for each of these exchanges and plots these in real time to the page.

This is an ideal application to measure the performance of the different asynchronous modes supported by the Engine.IO server.

To run these examples using the default 'threading' mode, create a virtual environment, install the requirements and then run:

$ python simple.py

or:

$ python latency.py

Near the top of the simple.py and latency.py source files there is a async_mode variable that can be edited to swich to the other asynchornous modes. Accepted values for async_mode are 'threading', 'eventlet' and 'gevent'.

Note 1: when using the 'eventlet' mode, the eventlet package must be installed in the virtual environment:

$ pip install eventlet

Note 2: when using the 'gevent' mode, the gevent and gevent-websocket packages must be installed in the virtual environment:

$ pip install gevent gevent-websocket