3 Algorithm Examples

The following example shows the WBXML encoding of a server response that contains a new contact and provides a byte-by-byte description of the encoding.

The following XML represents a server response to a request to create a new contact.

 <?xml version="1.0" encoding="utf-8"?>
 <Sync xmlns="AirSync" xmlns:airsyncbase="AirSyncBase" xmlns:contacts="Contacts">
   <Collections>
     <Collection>
       <Class>Contacts</Class>
       <SyncKey>2</SyncKey>
       <CollectionId>2</CollectionId>
       <Status>1</Status>
       <Commands>
         <Add>
           <ServerId>2:1</ServerId>
           <ApplicationData>
             <airsyncbase:Body>
               <airsyncbase:Type>1</airsyncbase:Type>
               <airsyncbase:EstimatedDataSize>0</airsyncbase:EstimatedDataSize>
               <airsyncbase:Truncated>1</airsyncbase:Truncated>
             </airsyncbase:Body>
             <contacts:FileAs>Funk, Don</contacts:FileAs>
             <contacts:FirstName>Don</contacts:FirstName>
             <contacts:LastName>Funk</contacts:LastName>
             <airsyncbase:NativeBodyType>1</airsyncbase:NativeBodyType>
           </ApplicationData>
         </Add>
       </Commands>
     </Collection>
   </Collections>
 </Sync>

The Exchange ActiveSync: WAP Binary XML (WBXML) Algorithm encodes this XML as the following WBXML encoding.

 03 01 6A 00 45 5C 4F 50 03 43 6F 6E 74 61 63 74 73 00 01 4B 03 32 00 01 52 03 32 00 01 4E 03 31 00 01 56 47 4D 03 32 3A 31 00 01 5D 00 11 4A 46 03 31 00 01 4C 03 30 00 01 4D 03 31 00 01 01 00 01 5E 03 46 75 6E 6B 2C 20 44 6F 6E 00 01 5F 03 44 6F 6E 00 01 69 03 46 75 6E 6B 00 01 00 11 56 03 31 00 01 01 01 01 01 01 01

The following table explains each byte in the WBXML encoding.

Bytes	Description
03	Version number – WBXML version 1.3
01	Unknown public identifier
6A	Charset = UTF-8
00	String table length
45	<airsync:Sync>, with content (0x05 + 0x40)
5C	<airsync:Collections>, with content
4F	<airsync:Collection>, with content
50	<airsync:Class>, with content
03	Inline string follows
43 6F 6E 74 61 63 74 73 00	"contacts" (the 00 is the end of the string)
01	</airsync:Class>
4B	<airsync:SyncKey>, with content
03	Inline string follows
32 00	"2"
01	</airsync:SyncKey>
52	<airsync:CollectionID>, with content
03	Inline string follows
32 00	"2"
01	</airsync:CollectionID>
4E	<airsync:Status>, with content
03	Inline string follows
31 00	"1"
01	</airsync:Status>
56	<airsync:Commands>, with content
47	<airsync:Add>, with content
4D	<airsync:ServerId>, with content
03	Inline string follows
32 3A 31 00	"2:1"
01	</airsync:ServerId>
5D	<airsync:ApplicationData>, with content
00 11	Select WBXML code page 17 (AirSyncBase)
4A	<airsyncbase:Body>, with content
46	<airsyncbase:Type>, with content
03	Inline string follows
31 00	"1"
01	</airsyncbase:Type>
4C	<airsyncbase:EstimatedDataSize>, with content
03	Inline string follows
30 00	"0"
01	</airsyncbase:EstimatedDataSize>
4D	<airsyncbase:Truncated>, with content
03	Inline string follows
31 00	"1"
01	</airsyncbase:Truncated>
01	</airsyncbase:Body>
00 01	Select WBXML code page 1 (Contacts)
5E	<contacts:FileAs>, with content
03	Inline string follows
46 75 6E 6B 2C 20 44 6F 6E 00	"Funk, Don"
01	</contacts:FileAs>
5F	<contacts:FirstName>, with content
03	Inline string follows
44 6F 6E 00	"Don"
01	</contacts:FirstName>
69	<contacts:LastName>, with content
03	Inline string follows
46 75 6E 6B 00	"Funk"
01	</contacts:LastName>
00 11	Select WBXML code page 17 (AirSyncBase)
56	<airsyncbase:NativeBodyType>, with content
03	Inline string follows
31 00	"1"
01	</airsyncbase:NativeBodyType>
01	</airsync:ApplicationData>
01	</airsync:Add>
01	</airsync:Commands>
01	</airsync:Collection>
01	</airsync:Collections>
01	</airsync:Sync>