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Incoming connections
Allow connections to your Deepnote machine from the web
Many tools, such as Tensorboard and Streamlit, require a local webserver to be spun up to serve docs, dashboards, and other web interfaces. They often prompt you to open an address like
http://localhost:8080). When you enable incoming connections, Deepnote exposes port
8080 on the internet under an address such as b9d13315-f12a-4931-857c-ed6b4c59dcad.deepnoteproject.com. You can use this address to access services running on port 8080 on your Deepnote machine. Enabling incoming connections means that anyone on the internet will be able to access port 8080 on your machine.
How to allow Incoming connections
You can allow incoming connections from the Project tab in the right sidebar. From there, click on the arrow next to Environment to be taken to the and then toggle "Allow incoming connections" at the bottom.
If you want to try it out, paste
!python -m http.server 8080 into a block and run it. If incoming connections have been enabled as described above, you should be able to paste the provided link into a browser to connect to the running webserver.What if I need to expose a different port?
Right now we only support exposing port 8080. To expose other ports, you can either reconfigure your tool, or use utilities like
socat which can forward traffic from port 8080 to the port of your choosing. You can use the example below to set up port forwarding with socat in the terminal:1
apt update && apt install socat
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socat tcp-l:8080,fork,reuseaddr tcp:127.0.0.1:YOUR_PORT
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Running Flask
You can also use Deepnote to prototype a simple Flask server. When using its development server, don't forget to set the
host to reach it from outside the local machine. Example:
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from flask import Flask
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app = Flask(__name__)
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@app.route("/")
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def hello_world():
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return "<p>Hello, World!</p>"
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app.run(host='0.0.0.0', port=8080)
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