pynetdicom.pdu_items.UserIdentitySubItemAC

class pynetdicom.pdu_items.UserIdentitySubItemAC

A User Identity (AC) Sub-item.

A User Identity (AC) Sub-item is used to response with the server identity to the association requestor.

item_length

The number of bytes from the first byte following the Item Length field to the last byte of the Item.

Type:int
item_type

The Item Type field value (0x59).

Type:int
server_response_length

The Server Response Length field value.

Type:int
server_response

The Server Response field value.

Type:bytes

Notes

A User Identity (RQ) Sub-item requires the following parameters:

  • Item type (1, fixed, 0x59)
  • Item length (1)
  • Server response length (1)
  • Server response (1)

Encoding

When encoded, a User Identity (AC) Sub-item has the following structure, taken from Tables D.3-15 [1] (offsets shown with Python indexing). Items are always encoded using Big Endian [2].

Offset Length Description
0 1 Item type
1 1 Reserved
2 2 Item length
4 2 Server response length
6 Variable Server response

References

[1]DICOM Standard, Part 7, Annex D.3.3.7
[2]DICOM Standard, Part 8, Section 9.3.1
__init__()

Initialise a new User Identity (AC) Item.

Methods

__init__() Initialise a new User Identity (AC) Item.
decode(bytestream) Decode bytestream and use the result to set the field values of the PDU item.
encode() Return the encoded PDU as bytes.
from_primitive(primitive) Set the item’s values using an User Identity primitive.
to_primitive() Return an User Identity primitive from the current Item.

Attributes

item_length Return the item’s Item Length field value as an int.
item_type Return the item’s Item Type field value as an int.
response Return the item’s Server Response field value.
server_response_length Return the item’s Server Response Length field value.
decode(bytestream)

Decode bytestream and use the result to set the field values of the PDU item.

Parameters:bytestream (bytes) – The PDU data to be decoded.
encode()

Return the encoded PDU as bytes.

Returns:The encoded PDU.
Return type:bytes
from_primitive(primitive)

Set the item’s values using an User Identity primitive.

Parameters:primitive (pdu_primitives.UserIdentityNegotiation) – The primitive to use to set the Item’s field values.
item_length

Return the item’s Item Length field value as an int.

item_type

Return the item’s Item Type field value as an int.

response

Return the item’s Server Response field value.

server_response_length

Return the item’s Server Response Length field value.

to_primitive()

Return an User Identity primitive from the current Item.

Returns:The primitive representation of the current Item.
Return type:pdu_primitives.UserIdentityNegotiation