It contains text that meets the grammar for "realm-value" as described in RFC 3261 [RFC3261] but without the double quotes and their surrounding whitespace. That is, it is an unquoted realm-value (and is therefore a sequence of qdtext or quoted-pair). It MUST be a UTF-8 [RFC3629] encoded sequence of less than 128 characters (which can be as long as 763 bytes), and MUST have been processed using SASLprep [RFC4013].
It contains text that meets the grammar for "realm-value" as described in RFC 3261 [RFC3261] but without the double quotes and their surrounding whitespace.
It contains text that meets the grammar for "realm-value" as described in RFC 3261 [RFC3261] but without the double quotes and their surrounding whitespace. That is, it is an unquoted realm-value (and is therefore a sequence of qdtext or quoted-pair). It MUST be a UTF-8 [RFC3629] encoded sequence of less than 128 characters (which can be as long as 763 bytes), and MUST have been processed using SASLprep [RFC4013].
The REALM attribute may be present in requests and responses.
https://tools.ietf.org/html/rfc5389#section-15.7
It contains text that meets the grammar for "realm-value" as described in RFC 3261 [RFC3261] but without the double quotes and their surrounding whitespace. That is, it is an unquoted realm-value (and is therefore a sequence of qdtext or quoted-pair). It MUST be a UTF-8 [RFC3629] encoded sequence of less than 128 characters (which can be as long as 763 bytes), and MUST have been processed using SASLprep [RFC4013].