Socket Send (Transmit) - 0x44
Description
A Socket Send message causes the device to transmit data using the current connection. For a non-zero frame ID, this will elicit a Transmit (TX) Status - 0x89 frame.
This frame requires a successful Socket Connect - 0x42 frame first. For a socket that is not connected, the device responds with a Transmit (TX) Status - 0x89 frame with an error. To send data from a UDP socket that is not connect, use a Socket SendTo - 0x45 frame.
Format
The following table provides the contents of the frame. For details on frame structure, see API frame format.
| Field name | Field value | Data type | Description |
|---|---|---|---|
|
Frame type |
0x44 |
Byte |
|
|
Frame ID |
|
Byte |
A reference identifier used to match status responses. If set to 0, the Transmit (TX) Status - 0x89 frame is disabled. |
|
Socket ID |
|
Byte |
ID of the socket to send on. |
| Transmit options | Byte bit-field |
Reserved |
|
| Payload | Variable | Data to be transferred to the destination, up to 1500 bytes. |
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