Table Of Contents

UDP Read (UDP Read Text (U32 Address)) (G Dataflow)

Last Modified: March 20, 2017

Reads a datagram string from a UDP socket.

This node returns data when it receives any bytes, and waits the full timeout ms only if it receives no bytes.

Programming Patterns
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connection ID in

A network connection refnum that uniquely identifies the UDP socket.

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max size

The maximum number of bytes to read. If you wire a value other than 548 to this input, Windows might return an error because the node cannot read fewer bytes than are in a packet.

Default: 548

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timeout ms

Time, in milliseconds, that the node waits to complete before reporting a timeout error. A value of -1 indicates to wait indefinitely.

Default: 25,000 ms

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error in

Error conditions that occur before this node runs.

The node responds to this input according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Default: No error

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connection ID out

Same value as connection ID.

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data out

The data read from the UDP datagram.

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error out

Error information.

The node produces this output according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.
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port

The port of the UDP socket that sent the datagram.

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address

The address of the computer where a datagram originates.

Where This Node Can Run:

Desktop OS: Windows

FPGA: This product does not support FPGA devices


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