[MS-ASCMD]: ActiveSync Command Reference Protocol Specification

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2009-11-09T09:00:00.692Z
Multipart Response
At a high level, the multipart response consists of several key elements:
•HTTP headers that specify the content type (HTTP 'Content-Type' header) of the multipart
response: application/vnd.ms-sync.multipart.
•Metadata consisting of a list of [integer, integer] tuples that specify the start and count of bytes,
respectively, of each body part. The following is the format of the metadata:
'Number of Parts :'
'Part' ':'
Range specifies a [start, count] value that indicates the start and count of bytes for each body part.
There MUST be at least one tuple, pointing to the WBXML response.
•The WBXML response, which contains status and application data for all requested items. The
WBXML response is always the first part in the response. Items composed of binary content have
a Part element (section 2.2.3.111) that indicates the index (base 0) of the body part that
corresponds to that item in the multipart structure. This index is used by the client to find the
appropriate [start, count] entry in the metadata.
•Binary application data, which includes one or more binary data parts, the start and end byte of
each of which is indicated in the WBXMLEX-Ranges header.
The following figure shows the elements of the multipart response.
[MS-ASCMD] — v20110315
ActiveSync Command Reference Protocol Specification
Copyright © 2011 Microsoft Corporation.
Release: Tuesday, March 15, 2011
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