擅长:python、mysql、java
<p>这里有一个<a href="http://publib.boulder.ibm.com/infocenter/systems/index.jsp?topic=/com.ibm.aix.progcomm/doc/progcomc/skt_shutdn.htm" rel="noreferrer">explanation</a>:</p>
<blockquote>
<p>Once a socket is no longer required,
the calling program can discard the
socket by applying a close subroutine
to the socket descriptor. If a
reliable delivery socket has data
associated with it when a close takes
place, the system continues to attempt
data transfer. However, if the data is
still undelivered, the system discards
the data. Should the application
program have no use for any pending
data, it can use the shutdown
subroutine on the socket prior to
closing it.</p>
</blockquote>