Exception raised when attempting to use an unsupported TIdConnectionIntercept capability.

EIdInterceptPropInvalid = class(EIdTCPConnectionError)

This exception class is raised whenever an there is an attempt to use a capability that is not supported by the current TIdConnectionIntercept that was assigned to the Intercept property. This can occur if you attempt to use a TIdHTTP component access a secure HTTP site (HTTPS) while the TIdHTTP's Intercept property is not set to a TIdSSLConnectionIntercept descendant.