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href="Netsmtp.html"><title>Ocamlnet 2 Reference Manual : Uq_engines.wrapped_datagram_socket</title> </head> <body> <div class="navbar"><a href="Uq_engines.server_socket_listener.html">Previous</a> <a href="Uq_engines.html">Up</a> <a href="Uq_engines.datagram_socket_provider.html">Next</a> </div> <center><h1>Class type <a href="type_Uq_engines.wrapped_datagram_socket.html">Uq_engines.wrapped_datagram_socket</a></h1></center> <br> <pre><span class="keyword">class type</span> <a name="TYPEwrapped_datagram_socket"></a>wrapped_datagram_socket = <code class="code">object</code> <a href="Uq_engines.wrapped_datagram_socket.html">..</a> <code class="code">end</code></pre>A <code class="code">wrapped_datagram_socket</code> allows datagrams to be sent via proxies. It provides versions of the <code class="code">sendto</code> and <code class="code">recvfrom</code> functions that use extended socket names (which are proxy-friendly).<br> <hr width="100%"> <pre><span class="keyword">method</span> <a name="METHODdescriptor"></a>descriptor : <code class="type">Unix.file_descr</code></pre><div class="info"> The underlying file descriptor. This descriptor must not be used to transfer data (<code class="code">Unix.send(to)</code>, <code class="code">Unix.recv(from)</code>, etc.), because the descriptor may be connected with a proxy, and the socket addresses may be wrong that are used by the low-level socket functions. The right way is to use the methods below to transfer data. It is allowed, however, to pass the descriptor to <code class="code">Unix.select</code>, and to check whether transfers are possible. It is also allowed to set or clear non-blocking mode, and the close-on-exec flag, and to modify the socket options.<br> </div> <pre><span class="keyword">method</span> <a name="METHODsendto"></a>sendto : <code class="type">string -> int -> int -> Unix.msg_flag list -> <a href="Uq_engines.html#TYPEsockspec">sockspec</a> -> int</code></pre><div class="info"> Send data over the (unconnected) socket<br> </div> <pre><span class="keyword">method</span> <a name="METHODrecvfrom"></a>recvfrom : <code class="type">string -> int -> int -> Unix.msg_flag list -> int * <a href="Uq_engines.html#TYPEsockspec">sockspec</a></code></pre><div class="info"> Receive data from the (unconnected) socket. The method will raise EAGAIN if the message cannot be processed for some reason, even if the socket is in blocking mode. In this case, the received message is discarded.<br> </div> <pre><span class="keyword">method</span> <a name="METHODshut_down"></a>shut_down : <code class="type">unit -> unit</code></pre><div class="info"> Close the descriptor, shuts down any further needed resources<br> </div> <pre><span class="keyword">method</span> <a name="METHODdatagram_type"></a>datagram_type : <code class="type"><a href="Uq_engines.html#TYPEdatagram_type">datagram_type</a></code></pre><pre><span class="keyword">method</span> <a name="METHODsocket_domain"></a>socket_domain : <code class="type">Unix.socket_domain</code></pre><pre><span class="keyword">method</span> <a name="METHODsocket_type"></a>socket_type : <code class="type">Unix.socket_type</code></pre><pre><span class="keyword">method</span> <a name="METHODsocket_protocol"></a>socket_protocol : <code class="type">int</code></pre></body></html>
