exarkun at divmod.com
Wed Sep 13 15:31:34 CEST 2006
On Wed, 13 Sep 2006 08:13:43 -0500, hg <hg at nospam.com> wrote:
>I am not sure whether this is a python-related question.
>If I have device A than sends XX bytes to device B, and device B does a
>recv(XX) using the default timeout, what could make device B wake-up
>with less than XX bytes received ?
Assuming the sends take place over a TCP connection, any number of things.
In generally, you cannot rely on anything about the length of the string
returned from recv(N) except that:
it will not be greater than N
it will not be less than 1 unless the connection has been lost
If you expect a particular number of bytes, you need to call recv()
multiple times and collect the returned strings until you have as many
bytes as you wanted.
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