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http requests connect, but websockets do not when running inside docker

See original GitHub issue

Summary

When running streamlit hello inside a docker container, I am able to connect to the web server, but none of the web socket requests succeed. This occurs in both docker and kubernetes.

Steps to reproduce

running the Dockerfile:

FROM ubuntu:latest

RUN pip3 install streamlit

ENV LC_ALL=C.UTF-8
ENV LANG=C.UTF-8

RUN mkdir -p /root/.streamlit/
RUN echo '[general]\nemail = "a@a.a"' > /root/.streamlit/credentials.toml

CMD streamlit hello

run docker run -p 8501:8501 --rm -it streamlit

Debug info

Streamlit version: 0.47.4
Python version: 3.6.8
Using Conda? PipEnv? PyEnv? Pex? no
OS version: ubuntu:latest
Browser version: Chrome Version 76.0.3809.132

Issue Analytics

State:
Created 4 years ago
Reactions:4
Comments:6 (2 by maintainers)

Top GitHub Comments

2reactions

dwielcommented, Oct 7, 2019

It seems that adding the following into ~/.streamlit/config.toml did the trick.

[server]
enableCORS = false

Still, it would be nice not to have to do this, or to get an error message that might suggest it.

0reactions

monchiercommented, Mar 4, 2020

Closing since fix has been merged: https://github.com/streamlit/streamlit/pull/965 Please reopen if this is not the case.

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