2.6.1 SerializationHeaderRecord

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The SerializationHeaderRecord record MUST be the first record in a binary serialization. This record has the major and minor version of the format and the IDs of the top object and the headers.


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RecordTypeEnum

RootId

...

HeaderId

...

MajorVersion

...

MinorVersion

...

RecordTypeEnum (1 byte): A RecordTypeEnumeration value that identifies the record type. The value MUST be 0.

RootId (4 bytes): An INT32 value (as specified in [MS-DTYP] section 2.2.22) that identifies the root of the graph of nodes. The value of the field is set as follows:

  • If a BinaryMethodCall record is present in the serialization stream and if there is no MethodCallArray record following it, the value of this field MUST be 0; if a MethodCallArray record follows the BinaryMethodCall record, the value of this field MUST contain the ObjectId of the MethodCallArray.

  • If a BinaryMethodReturn record is present in the serialization stream and if there is no MethodReturnCallArray record following it, the value of this field MUST be 0; if a MethodReturnCallArray record follows the BinaryMethodReturn record, the value of this field MUST contain the ObjectId of the MethodReturnCallArray.

  • If neither the BinaryMethodCall nor BinaryMethodReturn record is present in the serialization stream, the value of this field MUST contain the ObjectId of a Class, Array, or BinaryObjectString record contained in the serialization stream.

HeaderId (4 bytes): An INT32 value (as specified in [MS-DTYP] section 2.2.22) that identifies the Array that contains the header objects. The value of the field is set as follows:

  • If a BinaryMethodCall record is present in the serialization stream and if there is no MethodCallArray record following it, the value of this field MUST be 0; if a MethodCallArray record follows the BinaryMethodCall record, the value of this field MUST be -1.

  • If a BinaryMethodReturn record is present in the serialization stream and if there is no MethodReturnCallArray record following it, the value of this field MUST be 0; if a MethodReturnCallArray record follows the BinaryMethodReturn record, the value of this field MUST be -1.

  • If neither the BinaryMethodCall nor BinaryMethodReturn record is present in the serialization stream, the value of this field MUST contain the ObjectId of a Class, Array , or BinaryObjectString record that is contained in the serialization stream.

The field MUST be ignored on read.

MajorVersion (4 bytes): An INT32 value (as specified in [MS-DTYP] section 2.2.22) that identifies the major version of the format. The value of this field MUST be 1.

MinorVersion (4 bytes): An INT32 value (as specified in [MS-DTYP] section 2.2.22) that identifies the minor version of the protocol. The value of this field MUST be 0.