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From Christopher Schultz <ch...@christopherschultz.net>
Subject Re: Tomcat SSL or Apache SSL
Date Mon, 19 Dec 2016 18:07:57 GMT
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Edwin,

On 12/19/16 12:22 PM, Edwin Quijada wrote:
> I am trying to use SSL with my server Tomcat . I have read
> different articles when it recommends that is better use Apache
> webserver in front of Tomcat to and apache handles the SSL
> conection. My problem is that I cannot use apache in front of
> Tomcat because I am using websockets and these doesnt work with
> apache in front of.

I haven't used it, but httpd does have mod_proxy_wstunnel[1]. I'm not
sure if it's production-quality.

> I read howto use Tomcat with SSL but I 'd like to know any
> comments from you about this.

It used to be the conventional wisdom that Tomcat should be fronted by
httpd for two reasons:

1. httpd was faster for static content
2. httpd was faster for TLS termination

Neither of those are true anymore, so they aren't compelling reasons
to use httpd as a reverse-proxy in front of Tomcat. There are *other*
compelling reasons to use httpd in front of Tomcat, but static content
and TLS performance aren't among them.

For the best performance, you are going to want to use either of these
configurations for TLS:

a. NIO/NIO2 with OpenSSL crypto provider
b. APR/tcnative with OpenSSL

The APR/tcnative option has a longer history and will likely yield
slightly better (but possibly not measurable) performance, but it is
more difficult to set-up, requires a native library shim for OpenSSL, et
c.

The NIO/NIO2 option is much easier to configure but the OpenSSL crypto
provider has fewer miles under its treads, so you might want to make
sure you test it a lot before you rely on it in production. Then
again, Websocket in general is somewhat "new" itself, so I'm not sure
if the "newness" of the OpenSSL crypto provider should be particularly
worrisome for you.

Hope that helps,
- -chris

[1] https://httpd.apache.org/docs/2.4/mod/mod_proxy_wstunnel.html
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