[squid-users] Squid 4.4 + sslbump cannot open specific URL: ESI Processing failed

Amos Jeffries squid3 at treenet.co.nz
Fri Dec 21 17:34:44 UTC 2018

On 22/12/18 4:42 am, info at schroeffu.ch wrote:
> Hi all,
> I am getting the following error while opening https://www.hawesko.de with Squid 4.4 and sslbump.
> Deactivate bumping makes the error disappear.
> Error:
> ----------
> The following error was encountered while trying to retrieve the URL: https://www.hawesko.de
> ESI Processing failed.


A quick check confirms the server is producing ESI Surrogate headers
without having been asked and without the content actually being ESI. It
is a known bug that SSL-Bump enables the ESI logic. A patch can be found
at <https://github.com/squid-cache/squid/pull/304>


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