From TouchDesigner 099 Wiki


The UDP Out DAT is used to send information over a UDP connection to/from a remotely-located computer. Use the sendBytes() or send() methods of the udpoutDAT_Class to send messages.

Although is it an 'Out' node, it can receive reply messages from the machine(s) it sends to. The messages will appear in the DAT's contents (just like the UDP In DAT).

See also UDP In DAT, Touch Out DAT and TCP/IP DAT.

PythonIcon.png udpoutDAT_Class

Parameters - Connect Page

Protocol protocol - Selects the network protocol to use. Refer to the Network Protocols article for more information.

Network Address address - You can put an IP address (e.g., or a machine name to send to. If you put "localhost", it means the other end of the pipe is on the same computer. If you are using multi-cast you should put the multi-cast address you want to send to here.

Port port - The network port to send to.

Shared Connection shared - Use the same connection as other networking DATs using the same network protocol.

Row/Callback Format format - determines how the incoming data is parsed.

  • One Row Per Byte - One row is added to the table per byte received.
  • One Row Per Line - One row is added to the table per line received. The end of a line is delimited by \n, \r or a null character (\0).
  • One Row Per Message - One row is added to the table per message received.

Active active - This check box enables the connection.

Local Port Mode localportmode - .

Local Port localport - .

Parameters - Received Data Page

Callbacks DAT script - The Callbacks DAT will execute once for each message coming in.

Execute from executeloc - Determines the location the script is run from.

  • Current Node current - The script is executed from the current node location.
  • Callbacks DAT callbacks - The script is executed from the location of the DAT specified in the Callbacks DAT parameter.
  • Specified Operator op - The script is executed from the operator specified in the From Operator parameter below.

From Operator fromop - The operator whose state change will trigger the DAT to execute its script when Execute from is set to Specified Operator. This operator is also the path that the script will be executed from if the Execute from parameter is set to Specified Operator.

Clamp Output clamp - The DAT is limited to 100 messages by default but with Clamp Output, this can be set to anything including unlimited.

Maximum Lines maxlines - Limits the number of messages, older messages are removed from the list first.

Clear Output clear - Deletes all lines except the heading. To clear with a python script op("opname").par.clear.pulse()

Bytes Column bytes - Outputs the raw bytes of the message in a separate column.