[Mono-list] 503 error

Timotheus Pokorra timotheus.pokorra at solidcharity.com
Thu Jul 2 13:54:39 UTC 2015

> httpd -M shows that mono is running but the result is the same. Is there a
> way to determine if xsp is running? Is there a way to make sure that mono is
> calling xsp4 and not xsp? Either of those would result in the 'Failed to
> connect to mod-mono-server after several attempts to spawn the process.' I
> would think. I still have no answer for the '[ERROR] FATAL UNHANDLED
> EXCEPTION: System.InvalidProgramException: Invalid IL code in
> System.Configuration.ConfigurationManager:get_AppSettings (): IL_0000: ret'
> though. I hope that they are tied together.

First try the whole thing without httpd. Just start xsp4 in the
directory where your web.config and your aspx files are.

If that works, then the next step would to get it to work with mod_mono.

I have never tried mod_mono, but use fastcgi-mono-server4 instead.
Perhaps my configuration can give you some ideas:


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