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README.md

Python websockets sample for Google App Engine Flexible Environment

This sample demonstrates how to use websockets on Google App Engine Flexible Environment.

Setup

Before you can run or deploy the sample, you will need to create a new firewall rule to allow traffic on port 65080. This port will be used for websocket connections. You can do this with the Google Cloud SDK with the following command:

$ gcloud compute firewall-rules create default-allow-websockets \
    --allow tcp:65080 \
    --target-tags websocket \
    --description "Allow websocket traffic on port 65080"

Running locally

Refer to the top-level README for instructions on running and deploying.

To run locally, you need to use gunicorn with the flask_socket worker:

$ gunicorn -b 127.0.0.1:8080 -b 127.0.0.1:65080 -k flask_sockets.worker main:app

Python 3 Compatibility Notice

This sample currently doesn't run in Python 3 due to an issue with gevent. Gevent is planning to address the issue in the next release.