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Etcy,

On 10/5/18 14:57, ettra lancelot wrote:
> I would like to know whether it's possible to configure tomcat to 
> automatically redirect to the https URL when https port is access
> using http scheme instead of https*.*

There is no way to get Tomcat to do this for you right now.

There is, however, the possibility of adding such a feature to Tomcat.

If you make an HTTP request to Apache httpd on a TLS-enabled port,
you'll get a response that says "Looks like you made a mistake".

In the past, that would have been a huge pain in the neck for Tomcat,
since the TLS handshake was handled *entirely* by the underlying
crypto system (e.g. JSSE or APR/OpenSSL). AIUI, that code has been
re-written and Tomcat is buffering everything internally and probing
the handshake, etc.

It should therefore be possible to respond in the way you describe,
but I'm not sure how much appetite there is for issuing a redirect
rather than just an informational page such as the one httpd returns.

Unfortunately, Bill is incorrect when he says that you can write a
Filter for this. No application code will ever see a connection over a
connection which failed a TLS handshake.

- -chris
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