The Frustrating SSL Error: Demystifying "[SSL: WRONG_VERSION_NUMBER] wrong version number (

Are you tired of encountering the dreaded “[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1006)” error while running your Streamlit application? You’re not alone! Many developers have stumbled upon this frustrating issue, but fear not, dear reader, for we’re about to embark on a journey to tackle this problem head-on.

Table of Contents

What’s Causing the Error?
Diagnosing the Issue
1. Checking Python and SSL/TLS Versions
Resolving the Error
Best Practices for Avoiding SSL/TLS Issues
Conclusion

What’s Causing the Error?

The “[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1006)” error typically occurs when your Streamlit application is trying to establish a secure connection with a server, but the SSL/TLS version is incompatible. This incompatibility can arise from various factors, including:

Outdated SSL/TLS versions
Incorrectly configured servers
Network restrictions or firewalls
Conflicting Python packages

Diagnosing the Issue

To better understand the root cause of the error, let’s dive deeper into the error message itself:

ssl.SSLError: [SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1006)

The `_ssl.c:1006` part indicates that the error is occurring within the Python SSL module, specifically in the `_ssl` C extension. This hint suggests that we should focus on the Python and SSL/TLS configuration.

Checking Python and SSL/TLS Versions

Verify that your Python version is up-to-date, as older versions might be incompatible with newer SSL/TLS versions. You can check your Python version using:

python --version

Next, ensure that your SSL/TLS version is compatible with your Python version. You can check the SSL/TLS version using:

python -c "import ssl; print(ssl.OPENSSL_VERSION)"

Take note of the version number; we’ll use it later to diagnose the issue.

Resolving the Error

Now that we’ve diagnosed the issue, let’s explore the solutions:

Downgrading Python’s SSL/TLS Version

In some cases, downgrading the SSL/TLS version can resolve the compatibility issue. You can do this by setting the `ssl` module’s `PROTOCOL_VERSION` to a lower version:

import ssl
ssl.PROTOCOL_VERSION = ssl.PROTOCOL_TLSv1_2

Insert this code at the beginning of your Streamlit application, before making any SSL/TLS connections. This will force Python to use TLSv1.2 instead of the default TLSv1.3.

Upgrading Python and SSL/TLS

If downgrading isn’t an option, you can try upgrading Python and SSL/TLS to the latest versions. This might involve updating your Python installation or using a virtual environment with the latest packages.

For example, you can upgrade Python using:

pip install --upgrade python

And then upgrade the `pyOpenSSL` package using:

pip install --upgrade pyOpenSSL

Configuring Servers and Firewalls

Ensure that your server and firewalls are configured to allow the necessary SSL/TLS versions. This might require adjusting server settings or firewall rules to permit the required connections.

Conflict Resolution with Python Packages

If you’re using other Python packages that rely on SSL/TLS connections, ensure that they’re compatible with each other and with your Streamlit application. You can try updating or downgrading these packages to resolve any conflicts.

Best Practices for Avoiding SSL/TLS Issues

To avoid encountering SSL/TLS issues in the future, follow these best practices:

Keep your Python and SSL/TLS versions up-to-date.
Use virtual environments to isolate dependencies and avoid conflicts.
Verify server and firewall configurations to ensure compatibility.
Test your Streamlit application with different SSL/TLS versions to identify potential issues.
Monitor your application’s SSL/TLS connections and respond to any warnings or errors.

Best Practice	Rationale
Keep Python and SSL/TLS versions up-to-date	Ensures compatibility and avoids deprecated versions
Use virtual environments	Isolates dependencies and reduces conflict risks
Verify server and firewall configurations	Ensures compatibility and avoids connection issues
Test with different SSL/TLS versions	Identifies potential issues before deployment
Monitor SSL/TLS connections	Enables swift response to warnings and errors

Conclusion

The “[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1006)” error can be frustrating, but by following the steps outlined in this article, you should be able to diagnose and resolve the issue. Remember to keep your Python and SSL/TLS versions up-to-date, configure your servers and firewalls correctly, and monitor your application’s SSL/TLS connections.

By adopting these best practices, you’ll be well-equipped to tackle SSL/TLS issues and ensure a smooth, secure experience for your Streamlit application’s users.

Frequently Asked Question

Stuck with the error “An error occurred: [SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1006)” while running a Streamlit application? Don’t worry, we’ve got you covered! Here are some frequently asked questions and answers to help you troubleshoot the issue.

What causes the ” WRONG_VERSION_NUMBER” error in Streamlit?

This error occurs when the SSL/TLS version used by the Streamlit application is incompatible with the version used by the Python requests library. This can happen when the Python version or the OpenSSL version is outdated.

How do I update the Python version to resolve the issue?

You can update your Python version by downloading the latest version from the official Python website or by using a package manager like Homebrew (on Mac) or Anaconda. Make sure to install the latest version that is compatible with your system.

What if I’m using a virtual environment? Do I need to update the Python version in the virtual environment as well?

Yes, you need to update the Python version in the virtual environment as well. Activate your virtual environment and then update Python using pip or conda, depending on how you created your virtual environment.

Is there a way to specify the SSL/TLS version used by Streamlit?

Yes, you can specify the SSL/TLS version used by Streamlit by setting the ` ssl_version` parameter when creating the Streamlit app. For example, `streamlit run app.py –server.sslVersion=TLSv1_2`. However, this might not work with all versions of Python and OpenSSL.

Are there any other potential solutions to this issue?

Yes, you can try downgrading the requests library or upgrading the OpenSSL version. In some cases, reinstalling the `pyOpenSSL` library might also resolve the issue. If none of these solutions work, try seeking help on the Streamlit community forums or GitHub issues page.