udsonip.connection

Enhanced DoIP connection for UDS communication with dynamic target address support.

class udsonip.connection.UdsOnIpConnection(doip_client: DoIPClient, target_address: int | None = None)

Bases: BaseConnection

Enhanced DoIP connection that supports dynamic target address switching.

This connection class wraps a DoIPClient and provides the interface required by python-udsoncan while adding the ability to change the target ECU address at runtime without recreating the connection.

Parameters:

• doip_client – DoIPClient instance to use for communication

• target_address – Optional target logical address. If not provided, uses the address from doip_client

Example

>>> from doipclient import DoIPClient
>>> doip = DoIPClient('192.168.1.10', 0x00E0)
>>> conn = UdsOnIpConnection(doip)
>>> # Switch target address dynamically
>>> conn.target_address = 0x00E1

close()

Close the DoIP connection.

empty_rxqueue()

Empty the reception buffer.

is_open() → bool

Check if connection is open.

open()

Open the DoIP connection.

specific_send(payload: bytes)

Send a UDS payload to the current target address.

Parameters:

payload – UDS message payload to send

specific_wait_frame(timeout: float | None = None) → bytes | None

Wait for and receive a UDS response frame.

Parameters:

timeout – Maximum time to wait for response in seconds

Returns:

Received frame data or None if timeout

property target_address: int

Get the current target logical address.