Bob -
Don't use EOF. It's broken since forever ago.
I've done both of the following methods with success:
-- either --
End your data stream with a CR, and then on the receiving end "read from
socket XYZ for 1 line". This assumes that the data stream itself doesn't
contain any CRs. I normally base64-encode the data stream, then replace
CR with empty in the encoded string. This doesn't interfere with
base64Decoding on the receiving end - it'll still work fine.
-- or --
Make line 1 of your data stream an integer that is the number of bytes
in line 2 of your data stream
Make line 2 of your data stream the data you want to send
Then on the receiving end, do a two-step:
- read from socket XYZ for 1 line
- put it into tDataLength
- read from socket XYZ for tDataLength bytes
That's all I got :-)
Phil Davis
On 4/4/23 1:47 PM, Bob Sneidar via use-livecode wrote:
I have sockets working in my File Server Agent, but only using non-blocking calls, that is using
"with message". Removing the "with message" bit does not return any response
from the server agent.
For instance I send a payload using
write payload to socket tSocket with message "messageReceived"
The messageReceived handler gets triggered, and I can then
read from socket tSocket until EOF -- or other delimiter
it will then contain the response from the File Server Agent.
If however I use
write payload to socket tSocket -- blocking
read from socket tSocket until EOF -- or some other delimiter doesn't matter
the call times out and nothing ends up in the it or result variables.
I can (and have) made the non-blocking method work, but that means I have to
send all the files I want to transfer all at once, because if I send them one
at a time, I need to know if the last transfer succeeded before continuing.
Does anyone have an example of a blocking socket server? The example in
Livecode Lessons really only focuses on non-blocking calls.
Bob S
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Phil Davis
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