Скачать или смотреть Resolving TLS handshake failed Error in Websocket+ +

A comprehensive guide to troubleshooting the `TLS handshake failed` error when using Websocket+ + with SSL in C+ + . Learn how to implement effective fixes for smooth websocket connections.
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This video is based on the question https://stackoverflow.com/q/62703734/ asked by the user 'mihett05' ( https://stackoverflow.com/u/10354032/ ) and on the answer https://stackoverflow.com/a/62709826/ provided by the user 'mihett05' ( https://stackoverflow.com/u/10354032/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Understanding the TLS handshake failed Error in Websocket+ +

WebSocket communication has become essential for real-time applications. However, encountering errors like the TLS handshake failed can halt your development process. This error usually occurs while trying to establish a secure connection, typically indicated by using the WebSocket protocol over TLS (Transport Layer Security).

The Problem Encountered

During development, I attempted to connect to a secure WebSocket server (wss://echo.websocket.org) from my application. While local connections worked seamlessly, the attempt to connect to the external server yielded a TLS handshake failed error. Here’s a snippet of the error message:

[[See Video to Reveal this Text or Code Snippet]]

This message and the subsequent logs indicated that my application was facing issues during the TLS handshake process.

Why Does the TLS Handshake Fail?

The TLS handshake can fail for several reasons:

Certificate Verification Issues: The server’s certificate may not be verifiable.

TLS Version Compatibility: The version of TLS being requested may not align between client and server.

Misconfiguration in Code: Incorrect settings in the SSL context configuration within the Websocket+ + implementation.

Solution to the Problem

Upon investigating, I found that the issue stemmed from how SSL certificates were being verified in my connection setup. The solution involved modifying the TLS initialization function in my Websocket+ + integration code.

Adjusting the Context Initialization:

Here’s how to adjust your on_tls_init function:

[[See Video to Reveal this Text or Code Snippet]]

Explanation of Changes:

TLS Version: I switched the context from tlsv13 to tlsv12. The server may not support the latest versions of TLS, leading to handshake failures.

Setting Options: Adding options allows for backward compatibility and better error handling during the SSL handshake.

Verification Mode: Setting the verification mode to verify_none disables certificate validation. While this may not be suitable for production code due to security risks, it helps in debugging connection issues.

Additional Considerations

Security Implications

While disabling verification can help with quick debugging, it is vital to implement proper certificate verification in production to secure your data.

Testing Connection

After implementing the above changes, reattempt connecting to the secure WebSocket. Monitor your logs for successful connection messages, which confirm that the TLS handshake is now completed successfully.

Conclusion

The TLS handshake failed error can be daunting, but with careful inspection of your WebSocket configuration and proper TLS settings, you can establish secure connections with ease. Remember to revert any insecure options before deploying your application.

By following the above guidance, you should be able to resolve the TLS handshake issue encountered in your Websocket+ + implementation. Happy coding!