Dealing with [SSL: WRONG_VERSION_NUMBER] Error in Python

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What will you learn?

In this comprehensive guide, you will discover how to troubleshoot and fix the ‘[SSL: WRONG_VERSION_NUMBER]’ error in Python when dealing with SSL connections. By understanding the root cause of the issue and implementing the correct solutions, you will be able to resolve SSL version mismatches effectively.

Introduction to the Problem and Solution

Encountering the ‘[SSL: WRONG_VERSION_NUMBER]’ error in Python typically signals a discrepancy in supported SSL/TLS versions between your client code and the server. To tackle this issue, it is crucial to ensure that both client-side and server-side configurations align regarding SSL/TLS protocols.

One common scenario where this error arises is when attempting to establish an HTTPS connection using an outdated or unsupported SSL/TLS version. By updating your code or adjusting configuration settings, you can often rectify this problem efficiently.

Code

import requests

# Specify the URL you want to access
url = 'https://www.example.com'

# Make a GET request with proper SSL version configuration
response = requests.get(url, verify=True)

print(response.content)

# Copyright PHD

Explanation

The provided code snippet showcases how to utilize the requests library in Python to execute an HTTPS GET request while ensuring proper SSL verification:

  • Importing requests: Importing the requests module enables easy sending of HTTP requests.
  • Setting URL: Define the secure URL that you intend to access.
  • Making a GET request: Utilize requests.get() method along with setting verify=True for correct SSL verification.
  • Printing response content: Display the content received from the requested URL.

This approach guarantees that your HTTP request adheres to appropriate SSL configurations compatible with contemporary security standards.

    How can I resolve [SSL: WRONG_VERSION_NUMBER] error in Python?

    To address this error, make sure your Python code employs TLSv1.x or higher versions for establishing secure connections instead of outdated protocols like SSLv3.

    Are there specific libraries known for triggering this issue?

    Certain older versions of libraries may provoke this error due to their reliance on deprecated encryption protocols. Updating these libraries should help alleviate compatibility issues.

    Can incorrect system time lead to [SSL: WRONG_VERSION_NUMBER] errors?

    Yes, inaccurate system time settings can result in certificate validation failures causing such errors. Ensure your system clock is precise.

    Is there a way to temporarily disable SSL verification as a workaround?

    While not recommended for production environments due to security risks, disabling certificate verification (verify=False) could serve as a temporary solution solely for testing purposes.

    Will upgrading OpenSSL version help mitigate [SSL: WRONG_VERSION_NUMBER] errors?

    Updating OpenSSL on both client and server ends might resolve compatibility issues related to newer TLS standards supported by modern applications.

    How does cipher suite selection impact resolving this error?

    Selecting suitable cipher suites during handshake negotiation is crucial as incompatible ciphers could trigger protocol version mismatches leading to such errors.

    Conclusion

    Resolving ‘[SSL: WRONG_VERSION_NUMBER]’ errors necessitates harmonizing both client-side and server-side configurations concerning supported TLS/SSL versions. By ensuring compatibility between them and keeping software dependencies up-to-date, you can effectively overcome these challenges.

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