Streamlit Cloud Port Proxying on streamlit.io

banesullivan · May 3, 2022, 8:36pm

Following up as I’m investigating this.

This currently open feature request seems like the it’s heading towards what I would need:

github.com/streamlit/streamlit

Support custom HTTP requests

opened 04:21AM - 17 Oct 19 UTC

tvst

enhancement

See: https://discuss.streamlit.io/t/streamlit-restful-app/409 Some users woul…d like to have their Streamlit servers work double duty as both a Streamlit app server and a data server (for REST endpoints, for example) ### API proposal 1 A traditional-looking API for that would be something like: ```python st.server.add_route('foo', foo_callback) ``` Then, when a POST or GET HTTP request is made against `/foo`, the callback `foo_callback` would handle it and return a response. I haven't thought through whether this would be possible to implement given our current "run from the top" architecture. It's possible this would require a big refactor. ### API proposal 2 A more Streamlit-style API would be something like: ```python if st.server.request.foo == 'bar': st.server.respond({'data': df}) # And .respond() would cause the script to finish executing immediately. ``` In this proposal, the `if` condition would be true if: - The user sent a POST to `/` with `foo` set to `bar` (either in a form or in JSON) - Or the user sent a GET to `/?foo=bar` This API is easier to implement and arguably easier to understand. --- My preference at this point is proposal 2. That said, both of these proposals are just straw-man designs to start a discussion. I believe neither of these is ready to implement at this point.

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Streamlit Cloud Port Proxying on streamlit.io

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