Description: This article is the last in a series examining how one might go about sending binary data as part of a SOAP message. This month we look at BEEP, the Blocks Extensible Exchange Protocol. The primary inventor of BEEP is Marshall Rose, a long-time \"protocol wonk\" within the IETF community. Marshall has authored more than 60 RFC\'s, covering everything from core SNMP details to a DTD for IETF RFCs. Like SOAP 1.2, BEEP is described in a transport-neutral manner and is defined in RFC 3080. The most common transport is TCP, and the TCP mapping is found in RFC 3081.