Could someone point me to the part of the spec which talks about what all
headers are to be inserted in all the response to an INVITE or any other
request. I am bit lost trying to find the right explanation.
I am specifically looking for a case where a proxy inserts a Record-Route
header in the outgoing invite and the UAS rejects the INVITE with some 5xx
or a 4xx response. Now would the 4xx or 5xx response carry the R-R headers
from UAS to the proxy and then back to UAC? I have generally seen the
implementations where 100 doesnt carry and 18x carries it.
thanks
Manpreet
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