ndto><tt>sendto</tt></a> and
<a href=udp.html#receivefrom><tt>receivefrom</tt></a> 
can no longer be used, but the method
<a href=udp.html#send><tt>send</tt></a> can be used to send data 
directly  to   the   peer, and the method 
<a href=udp.html#receive><tt>receive</tt></a> 
will  only return  datagrams originating
from that peer. There is about 30% performance gain due to this practice.
</p>

<p>
To associate  an UDP socket with  a local address, an  application calls the   
<a href=udp.html#setsockname>