421 Misdirected Request

[kozfelipe]

Problem description

When trying to embed the library via the script URL:

<script src="https://code.datagridxl.com/datagridxl2.js"></script>

the browser returns the following error:

Misdirected Request
The client needs a new connection for this request as the requested host name does not match the Server Name Indication (SNI) in use for this connection

This prevents the library from being loaded.

Actual result

• The script fails to load.
• The server responds with 421 Misdirected Request.
• The error message indicates an SNI (Server Name Indication) mismatch.

Expected result

• The script should load successfully over HTTPS.
• No TLS/SNI errors should occur when accessing the public embed URL.

Possible causes (hypotheses)

• Incorrect TLS/SNI configuration for code.datagridxl.com.
• HTTP/2 connection reuse with inconsistent certificate setup.
• Reverse proxy not forwarding SNI properly.