Your basic problem is that you need to read the ABNF specification (RFC 5234)
to understand the syntax descriptions. That example you quoted:
nonce-count = "nc" EQUAL nc-value
species the syntax of a field which has the arbitrary name "nonce-count",
just for purposes of syntax description. The actual syntax is to the right
of the equals sign, and says that the field has the form:
nc= some value whose syntax is spelled oput by the production nc-value elsewhere
in the ABNF.
The example you quote has this field:
nc=00000001
Moloud Mousavi wrote:
Hi,
The Cnonce definition in RFC 3261 is confusing. This is what I found:
cnonce = "cnonce" EQUAL cnonce-value cnonce-value = nonce-value
while a bit up an example shows the value of cnonce different than nonce:
nonce="dcd98b7102dd2f0e8b11d0f600bfb0c093", uri="sip:[email protected]",
qop=auth, nc=00000001, cnonce="0a4f113b",
response="6629fae49393a05397450978507c4ef1",
I need to calculate the challenge response. I don't know where to get this
cnonce from?
One more thing: Why are there many names for the same parameter??? Like this
one: nonce-count = "nc" EQUAL nc-value
THANKs a lot.
Moloud
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