"Bryan Olson" <[EMAIL PROTECTED]> wrote:
> Steve Holden wrote: > > Hendrik van Rooyen wrote: > >> Are sockets full duplex? > >> > > Yes. But you have to use non-blocking calls in your application to use > > them as full-duplex in your code. > > Hmmm... I'm missing something. Suppose I have one thread (or > process) reading from a blocking-mode socket while another is > writing to it? What stops it from being full duplex? > Elsewhere in this thread I wrote about my experience with a serial port, where I can show that the "file handler" only does the write once the blocking read completes - and the point at issue is if sockets are the same. We regularly get questions about "my stuff does not come out" on the group, and I wondered whether this effect is the underlying cause. But I don't know about the sockets case, which is why I asked. You raise an interesting point about a different process - my serial experience is using threads. I have never tried mixing processes on a serial port. Haven't a clue if its possible, or if the behaviour will be different. - Hendrik -- http://mail.python.org/mailman/listinfo/python-list
