Write to Source
source.write(p, txt)
Writes data out to the source.
| Parameter | Type | Description |
|---|---|---|
p |
table | Protocol table |
txt |
string | Data to send. |
The behaviour depends on the context of the call.
If this is called within the context of the channel that owns the protocol,
then the call is blocking (it will wait for the data to be transmitted before the function returns).
However, if it is a cross-channel write, then the data is queued into a 4096 byte transmit
buffer, and the channel's task will transmit it when it is able – effectively the call is
non-blocking (and if the 4k buffer overflows, then data is lost).
[!note[
This resolves problems that can occur if a script writes to a source faster than it can be sent. It prevents the whole ip.buffer from locking up!