Answered question

How to solve SSL_ERROR_RX_RECORD_TOO_LONG when trying to record site?

I am trying to record a website. Whem opening it in Firefox it works fine. But when i start Firefox to record and open the page it says: "SSL_ERROR_RX_RECORD_TOO_LONG".. I found two possible sollutions on this forum, i tried both, but i still get the error. -> Does not help for me -> Does not help for me

It is a TLS 1.2 secure connection.

Ok by default NeoLoad has the SNI option enabled on the JVM but  it seems that your server is not properly configured and so the hostname sent is not correct.

You can disable it on NeoLoad by editing the <install_dir>\bin\NeoLoadGUI.vmoptions file.

Change the option from "-Djsse.enableSNIExtension=true" to "-Djsse.enableSNIExtension=false".

Restart NeoLoad and that should do the trick.


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The best way to figure out what happens is to manually create your request in NeoLoad.

To do so, create an HTTP server with the server information like SSL and port.

Then create a page and use that server. Then run a check virtual user.

You should get a more meaningful error message.

Then i get the error:
Error detected by NeoLoad
Error Code: NL-NETWORK-01 Message: Network error: An IO error occurred sending the request. Details: handshake alert: unrecognized_name
Please refer to the documentation for further details and advice