[SIPForum-discussion] Mistake in absolute-URI?

[+ Ymaz]

Hello!

I have some questions about BNF, especially of 'absoluteURI'.

According to BNF, absoluteURI it's like this

absoluteURI = scheme ":" ( hier-part / opaque-part )

hier-part = ( net-path / abs-path ) [ "?" query ]
net-path = "//" authority [ abs-path ]
abs-path = "/" path-segments
query = *uric

authority = srvr / reg-name
srvr = [ [ userinfo "@" ] hostport ]
reg-name = 1*( unreserved / escaped
               / "$" / "," / ";" / ":" / "@" / "&" / "=" / "+" )

Okay, look at srvr = [ [ userinfo "@" ] hostport ], then check out
userinfo = ( user / telephone-subscriber ) [ ":" password ] "@"
See the "at" in the end of 'userinfo' expression, than check 'srvr' once
again and look at the symbol "at" too.

So, if you put 'userinfo' expression into 'srvr', it's could be happened
like "sip:alice@@atlanta.com" with two "@".  It's a mistake, or I don’t
understand it right?

Many thanks!
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