2.2.6.1 Common Type Header for the Serialization Stream

One common type header is created per serialization octet stream. The common header applies to all of the typed data in the octet stream. This common type header MUST be presented by using little-endian format in the octet stream. The first byte of the common type header MUST be equal to 1 to indicate this level of type serialization.

The common type header alignment MUST be aligned on an 8-byte boundary.


0


1


2


3


4


5


6


7


8


9

1
0


1


2


3


4


5


6


7


8


9

2
0


1


2


3


4


5


6


7


8


9

3
0


1

Version

Endianness

CommonHeaderLength

Filler

Version (1 byte): MUST be set to 1 to indicate type serialization version 1.

Endianness (1 byte): Specifies the endianness of types serialized in the octet stream as follows.<57>

Value

Meaning

0x10

Little-endian

0x00

Big-endian

CommonHeaderLength (2 bytes): The length in bytes of this common type header. MUST be set to 8.

Filler (4 bytes):  Reserved field. MUST be set to 0XCCCCCCCC on marshaling and SHOULD be ignored during unmarshaling.