&nbsp;open_connection&nbsp;:
&nbsp;&nbsp;&nbsp;&nbsp;UnixLabels.sockaddr&nbsp;-&gt;&nbsp;Stdlib.in_channel&nbsp;*&nbsp;Stdlib.out_channel
&nbsp;&nbsp;val&nbsp;shutdown_connection&nbsp;:&nbsp;Stdlib.in_channel&nbsp;-&gt;&nbsp;unit
&nbsp;&nbsp;val&nbsp;establish_server&nbsp;:
&nbsp;&nbsp;&nbsp;&nbsp;(Stdlib.in_channel&nbsp;-&gt;&nbsp;Stdlib.out_channel&nbsp;-&gt;&nbsp;unit)&nbsp;-&gt;
&nbsp;&nbsp;&nbsp;&nbsp;addr:UnixLabels.sockaddr&nbsp;-&gt;&nbsp;unit
&nbsp;&nbsp;type&nbsp;host_entry&nbsp;=
&nbsp;&nbsp;&nbs