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FIFO problems

Donn Cave donn at drizzle.com
Thu Sep 11 02:24:51 EDT 2003 
Quoth Tobias Pfeiffer <BoteDesSchattens at web.de>:
...
| So at the beginning everything works fine. I can start the client prog 
| and they will talk and understand to each other. The same if I connect 
| with three or more clients simultaneously (?). If one of these clients 
| exits, no problem. But when the last process exists and closes the 
| FIFO-file which was opened by os.open(infifo, os.O_WRONLY), the server 
| begins to print an empty string everytime it goes through the loop, 
| means it won't wait for a complete line to appear before continuing. 
| Why?

It's at end of file.  That's what happens when the write end of
a pipe closes, and there's no data left:  subsequent reads return
end of file, which in Python is an empty string.

You may close it and open it again at this point.

	Donn Cave, donn at drizzle.com
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