Squid Proxy Server Configuration Requirements



The Squid proxy 2.7 and later has a setting for “ignore_expect_100”.  This is defaulted to “off”.  The DyKnow Client and Monitoring service require this setting to be “on” to ensure proper communication with the DyKnow Server.

This can create the error: (417) Expectation failed. (InternalError: ProtocolError) returned from the server.


If you have the following line on your squid.conf

ignore_expect_100 off

change the setting to:

ignore_expect_100 on

This option is only available in Squid 2.7 or higher.  Restart your squid proxy server to ensure the change is propagated.

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