Re: Using GNAT.Sockets

[Michael Paus <pausnospam@nospamib-paus.com>]

markp wrote:

> Bob,
> 
> Thanks for your reply. My basic quesion is I realize that a socket read
> will not necessarily return all the data requested. The Receive_Socket
> item input parameter takes and array. Will a subsequent read place data
> at the beginning of the array, meaning I have to copy data out before I
> read again?

Yes it does but you do not have to copy your data. Just have a look at
Duncans example. He told you already how to do it. You just have to call
this in a loop until Last = My_Buffer'Last.

   procedure Receive_Socket
     (Socket => My_Socket,
      Item   => My_Buffer (Last + 1 .. My_Buffer'Last),
      Last   => Last);

The first byte will be stored at the first position of the buffer array
you provide, but in the above example we specify a sub-range of the
whole buffer and so the first element of this is at the index Last + 1
of the whole buffer and this is exactly what you need.

Michael