socket question

[hg]

Jean-Paul Calderone wrote:
> On Wed, 13 Sep 2006 08:13:43 -0500, hg <hg at nospam.com> wrote:
>> Hi,
>>
>> 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.
> 
> Jean-Paul
Many thanks,

hg