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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Thu Apr 27 23:35:35 PDT 2000 --><TITLE>Java 2 Platform SE v1.3: Class SocketImpl</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"></HEAD><BODY BGCOLOR="white"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/SocketImpl.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Java<sup><font size=-2>TM</font></sup> 2 Platform<br>Std. Ed. v1.3</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../java/net/Socket.html"><B>PREV CLASS</B></A> <A HREF="../../java/net/SocketPermission.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="SocketImpl.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">java.net</FONT><BR>Class SocketImpl</H2><PRE><A HREF="../../java/lang/Object.html">java.lang.Object</A> | +--<B>java.net.SocketImpl</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../java/net/SocketOptions.html">SocketOptions</A></DD></DL><HR><DL><DT>public abstract class <B>SocketImpl</B><DT>extends <A HREF="../../java/lang/Object.html">Object</A><DT>implements <A HREF="../../java/net/SocketOptions.html">SocketOptions</A></DL><P>The abstract class <code>SocketImpl</code> is a common superclass of all classes that actually implement sockets. It is used to create both client and server sockets. <p> A "plain" socket implements these methods exactly as described, without attempting to go through a firewall or proxy.<P><DL><DT><B>Since: </B><DD>JDK1.0</DD></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Field Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../java/net/InetAddress.html">InetAddress</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/SocketImpl.html#address">address</A></B></CODE><BR> The IP address of the remote end of this socket.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../java/io/FileDescriptor.html">FileDescriptor</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/SocketImpl.html#fd">fd</A></B></CODE><BR> The file descriptor object for this socket.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected int</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/SocketImpl.html#localport">localport</A></B></CODE><BR> The local port number to which this socket is connected.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected int</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/SocketImpl.html#port">port</A></B></CODE><BR> The port number on the remote host to which this socket is connected.</TD></TR></TABLE> <A NAME="fields_inherited_from_class_java.net.SocketOptions"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from interface java.net.<A HREF="../../java/net/SocketOptions.html">SocketOptions</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../java/net/SocketOptions.html#IP_MULTICAST_IF">IP_MULTICAST_IF</A>, <A HREF="../../java/net/SocketOptions.html#SO_BINDADDR">SO_BINDADDR</A>, <A HREF="../../java/net/SocketOptions.html#SO_KEEPALIVE">SO_KEEPALIVE</A>, <A HREF="../../java/net/SocketOptions.html#SO_LINGER">SO_LINGER</A>, <A HREF="../../java/net/SocketOptions.html#SO_RCVBUF">SO_RCVBUF</A>, <A HREF="../../java/net/SocketOptions.html#SO_REUSEADDR">SO_REUSEADDR</A>, <A HREF="../../java/net/SocketOptions.html#SO_SNDBUF">SO_SNDBUF</A>, <A HREF="../../java/net/SocketOptions.html#SO_TIMEOUT">SO_TIMEOUT</A>, <A HREF="../../java/net/SocketOptions.html#TCP_NODELAY">TCP_NODELAY</A></CODE></TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../java/net/SocketImpl.html#SocketImpl()">SocketImpl</A></B>()</CODE><BR> </TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected abstract void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/SocketImpl.html#accept(java.net.SocketImpl)">accept</A></B>(<A HREF="../../java/net/SocketImpl.html">SocketImpl</A> s)</CODE><BR> Accepts a connection.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected abstract int</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/SocketImpl.html#available()">available</A></B>()</CODE><BR> Returns the number of bytes that can be read from this socket without blocking.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected abstract void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/SocketImpl.html#bind(java.net.InetAddress, int)">bind</A></B>(<A HREF="../../java/net/InetAddress.html">InetAddress</A> host, int port)</CODE><BR> Binds this socket to the specified port number on the specified host.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected abstract void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/SocketImpl.html#close()">close</A></B>()</CODE><BR> Closes this socket.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected abstract void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/SocketImpl.html#connect(java.net.InetAddress, int)">connect</A></B>(<A HREF="../../java/net/InetAddress.html">InetAddress</A> address, int port)</CODE><BR> Connects this socket to the specified port number on the specified host.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected abstract void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/SocketImpl.html#connect(java.lang.String, int)">connect</A></B>(<A HREF="../../java/lang/String.html">String</A> host, int port)</CODE><BR> Connects this socket to the specified port on the named host.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected abstract void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/SocketImpl.html#create(boolean)">create</A></B>(boolean stream)</CODE><BR> Creates either a stream or a datagram socket.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../java/io/FileDescriptor.html">FileDescriptor</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/SocketImpl.html#getFileDescriptor()">getFileDescriptor</A></B>()</CODE><BR> Returns the value of this socket's <code>fd</code> field.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../java/net/InetAddress.html">InetAddress</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/SocketImpl.html#getInetAddress()">getInetAddress</A></B>()</CODE><BR> Returns the value of this socket's <code>address</code> field.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT 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