| The In-Reply-To header field enumerates the Call-IDs that this call
references or returns. These Call-IDs may have been cached by the client
then included in this header field in a return call.
This allows automatic call distribution systems to route return calls to the
originator of the first call. This also allows callees to filter calls, so
that only return calls for calls they originated will be accepted. This
field is not a substitute for request authentication.
For Example:
In-Reply-To: 70710@saturn.jcp.org, 17320@saturn.jcp.org
author:
BEA Systems, NIST
version:
1.2 |