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>

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