sofia-sip/libsofia-sip-ua/sip/sip_bad_mask

#
# nta has an error mask specifying which headers cause nta to automatically
# return 400 Bad Message if a critical header or pseudoheader in a request
# has a parsing error.
#
# The parsing error can be later checked with msg_extract_errors(), too.
#
# See <sip_parser.h> for definition of mask values.
#
# The error flags for a particular header can be set when header is added
# with msg_mclass_insert_header_flags().
#
# The flags of existing headers can be modified, if a copy of message class
# is first made with msg_mclass_clone().
#

#
# When updating this file, please update
# NTATAG_BAD_RESP_MASK()/NTATAG_BAD_REQ_MASK() documentation, too.
#

#
# Headers that must be valid for all requests
#
request = sip_mask_request | sip_mask_response
status = sip_mask_request | sip_mask_response
From = sip_mask_request | sip_mask_response
To = sip_mask_request | sip_mask_response
CSeq = sip_mask_request | sip_mask_response
Call-ID = sip_mask_request | sip_mask_response
Content-Length = sip_mask_request | sip_mask_response
Via = sip_mask_request | sip_mask_response

#
# User-Agent headers
#
Content-Type = sip_mask_ua
Content-Disposition = sip_mask_ua
Content-Encoding = sip_mask_ua

#
# Proxy heades
#
Route = sip_mask_proxy
Max-Forwards = sip_mask_proxy
Proxy-Require = sip_mask_proxy
Proxy-Authorization = sip_mask_proxy

#
# Registrar headers
#
Min-Expires = sip_mask_registrar
Authorization = sip_mask_registrar
Path = sip_mask_registrar

#
# Headers that must be valid in UA, proxy or registrar
#
Contact = sip_mask_ua | sip_mask_proxy | sip_mask_registrar
Require = sip_mask_ua | sip_mask_registrar | sip_mask_timer
Record-Route = sip_mask_ua | sip_mask_proxy

Expires = sip_mask_registrar | sip_mask_events

# Nothing bad can happen if something looks like it is not Supported
# Supported = sip_mask_ua | sip_mask_proxy | sip_mask_registrar

#
# 100rel headers
#
RAck = sip_mask_100rel
RSeq = sip_mask_100rel

#
# Event headers
#
Event = sip_mask_events
Subscription-State = sip_mask_events

#
# 'timer' headers
#
Session-Expires = sip_mask_timer
Min-SE = sip_mask_timer

#
# Privacy headers
#
Privacy = sip_mask_privacy

#
# Headers used in caller preferences
#
Request-Disposition = sip_mask_pref
Accept-Contact = sip_mask_pref
Reject-Contact = sip_mask_pref

#
# PUBLISH headers (NOTE: No SIP- here!)
#
Etag = sip_mask_publish
If-Match = sip_mask_publish