[OpenSER-Users] [OT] Do ITSP SIP_PSTN gateways allow REFER?

[Klaus Darilion]

Juha Heinanen schrieb:
> Alan Crosswell writes:
> 
>  > Refer works with cisco media GWs.  Dunno about others.  Re-INVITE with  
>  > Replaces also works.  They don't both work on the same code train  
>  > yet;)  Two different bug fixes not yet integrated into a single code  
>  > release.
> 
> alan,
> 
> do you know if there is anywhere a document that lists what headers
> cisco ios gw acts upon?  it is really scary if such a list does not
> exist.  if i remember correctly, cisco used to accept cc-diversion
> header as charging number header.  perhaps they still do and may be
> there are others that are as dangerous.

Maybe we need a remove_hf_except() function to strip all not explicitly 
allowed headers:

remove_hf_except("From|To|Via|Record-Route|Contact|PAI|CSeq|???????")

or something similar in result.

regards
klaus