Hi All,
 
#1. 
Can an endpoint send "400 Bad Request" response after sending 1xx
response. I think it should not. 
Please clarify on the same.
 
OR
 
#2. 
Can an UAC receive "400 Bad Request" final response after 1xx
provisional response.
 
Consider an example:
1xx response will be sent from the intermediate
proxies(statefull/stateless) and UAS(final-endpoint) sends 400 Bad
Request.
In this scenario what will be the final response to UAC. [no B2BUAs in
between]
 
Reg,
-Bharath

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