How to use ListenHTTP processor?

[Huagen peng]

Hi,

The ListenHTTP processor has a configuration “HTTP Headers to receive as 
Attributes (Regex)”.  I tried many ways in vain to get some attributes in.  
Does anyone know how to get attributes directly in?  I cannot find any example 
on it.

I can post data in JSON format and use the EvaluateJsonPath to get the 
attributes.  I just want to explore my options.

Thanks,

Huagen