As per RFC 2396:
2.4.1. Escaped Encoding
An escaped octet is encoded as a character triplet, consisting of the
percent character "%" followed by the two hexadecimal digits
representing the octet code. For example, "%20" is the escaped
encoding for the US-ASCII space character.
escaped = "%" hex hex
hex = digit | "A" | "B" | "C" | "D" | "E" | "F" |
"a" | "b" | "c" | "d" | "e" | "f"
Regards,
Amit Sharma
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Tarun2
Gupta
Sent: Friday, November 04, 2011 9:58 AM
To: [email protected]
Subject: [Sip-implementors] Escaped characters in lower case or upper case
Hi All
While sending a SIP request with escaped characters, should these be sent in
Upper case or lower case. For eg, ';' should be escaped as '3B' or '3b'? Can
you point out the ABNF regarding this? We are getting an interop issue wherein
a server is rejecting escaped characters in lower case.
The following header in REFER is being rejected because of 3b and 3d in lower
case.
Refer-To:
<sip:[email protected]:5060;user=phone?Replaces=2927026066-977%3bfrom-tag%3dUA_2927028804-977%3bto-tag%3d260018-260018>"
Regards,
Tarun Gupta
Aricent
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