Header Event
Fired for every article header being retrieved during article retrieval.
Syntax
snntp.on('Header', listener: (e: {readonly field: string, readonly value: string}) => void )
Remarks
The Field parameter contains the name of the header (same case as it is delivered). The Value parameter contains the header contents.
If the header line being retrieved is a continuation header line, then the Field parameter contains "" (empty string).