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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 23:35:34 PDT 2000 --><TITLE>Java 2 Platform SE v1.3: Class ServerSocket</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/ServerSocket.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/PasswordAuthentication.html"><B>PREV CLASS</B></A> <A HREF="../../java/net/Socket.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="ServerSocket.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <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 ServerSocket</H2><PRE><A HREF="../../java/lang/Object.html">java.lang.Object</A> | +--<B>java.net.ServerSocket</B></PRE><HR><DL><DT>public class <B>ServerSocket</B><DT>extends <A HREF="../../java/lang/Object.html">Object</A></DL><P>This class implements server sockets. A server socket waits for requests to come in over the network. It performs some operation based on that request, and then possibly returns a result to the requester. <p> The actual work of the server socket is performed by an instance of the <code>SocketImpl</code> class. An application can change the socket factory that creates the socket implementation to configure itself to create sockets appropriate to the local firewall.<P><DL><DT><B>Since: </B><DD>JDK1.0</DD><DT><B>See Also: </B><DD><A HREF="../../java/net/SocketImpl.html"><CODE>SocketImpl</CODE></A>, <A HREF="../../java/net/ServerSocket.html#setSocketFactory(java.net.SocketImplFactory)"><CODE>setSocketFactory(java.net.SocketImplFactory)</CODE></A></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== 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/ServerSocket.html#ServerSocket(int)">ServerSocket</A></B>(int port)</CODE><BR> Creates a server socket on a specified port.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../java/net/ServerSocket.html#ServerSocket(int, int)">ServerSocket</A></B>(int port, int backlog)</CODE><BR> Creates a server socket and binds it to the specified local port number, with the specified backlog.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../java/net/ServerSocket.html#ServerSocket(int, int, java.net.InetAddress)">ServerSocket</A></B>(int port, int backlog, <A HREF="../../java/net/InetAddress.html">InetAddress</A> bindAddr)</CODE><BR> Create a server with the specified port, listen backlog, and local IP address to bind to.</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> <A HREF="../../java/net/Socket.html">Socket</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/ServerSocket.html#accept()">accept</A></B>()</CODE><BR> Listens for a connection to be made to this socket and accepts it.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/ServerSocket.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> <A HREF="../../java/net/InetAddress.html">InetAddress</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/ServerSocket.html#getInetAddress()">getInetAddress</A></B>()</CODE><BR> Returns the local address of this server socket.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/ServerSocket.html#getLocalPort()">getLocalPort</A></B>()</CODE><BR> Returns the port on which this socket is listening.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/ServerSocket.html#getSoTimeout()">getSoTimeout</A></B>()</CODE><BR> Retrive setting for SO_TIMEOUT.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/ServerSocket.html#implAccept(java.net.Socket)">implAccept</A></B>(<A HREF="../../java/net/Socket.html">Socket</A> s)</CODE><BR> Subclasses of ServerSocket use this method to override accept() to return their own subclass of socket.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/ServerSocket.html#setSocketFactory(java.net.SocketImplFactory)">setSocketFactory</A></B>(<A HREF="../../java/net/SocketImplFactory.html">SocketImplFactory</A> fac)</CODE><BR> Sets the server socket implementation factory for the application.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/ServerSocket.html#setSoTimeout(int)">setSoTimeout</A></B>(int timeout)</CODE><BR> Enable/disable SO_TIMEOUT with the specified timeout, in milliseconds.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/net/ServerSocket.html#toString()">toString</A></B>()</CODE><BR> Returns the implementation address and implementation port of this socket as a <code>String</code>.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.lang.<A HREF="../../java/lang/Object.html">Object</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../java/lang/Object.html#clone()">clone</A>, <A HREF="../../java/lang/Object.html#equals(java.lang.Object)">equals</A>, <A HREF="../../java/lang/Object.html#finalize()">finalize</A>, <A HREF="../../java/lang/Object.html#getClass()">getClass</A>, <A HREF="../../java/lang/Object.html#hashCode()">hashCode</A>, <A HREF="../../java/lang/Object.html#notify()">notify</A>, <A HREF="../../java/lang/Object.html#notifyAll()">notifyAll</A>, <A HREF="../../java/lang/Object.html#wait()">wait</A>, <A HREF="../../java/lang/Object.html#wait(long)">wait</A>, <A HREF="../../java/lang/Object.html#wait(long, int)">wait</A></CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TD></TR></TABLE><A NAME="ServerSocket(int)"><!-- --></A><H3>ServerSocket</H3><PRE>public <B>ServerSocket</B>(int port) throws <A HREF="../../java/io/IOException.html">IOException</A></PRE><DL><DD>Creates a server socket on a specified port. A port of <code>0</code> creates a socket on any free port. <p> The maximum queue length for incoming connection indications (a request to connect) is set to <code>50</code>. If a connection indication arrives when the queue is full, the connection is refused. <p> If the application has specified a server socket factory, that factory's <code>createSocketImpl</code> method is called to create the actual socket implementation. Otherwise a "plain" socket is created. <p> If there is a security manager, its <code>checkListen</code> method is called with the <code>port</code> argument as its argument to ensure the operation is allowed. This could result in a SecurityException.<DD><DL><DT><B>Parameters:</B><DD><CODE>port</CODE> - the port number, or <code>0</code> to use any free port.<DT><B>Throws:</B><DD><CODE><A HREF="../../java/io/IOException.html">IOException</A></CODE> - if an I/O error occurs when opening the socket.<DD><CODE><A HREF="../../java/lang/SecurityException.html">SecurityException</A></CODE> - if a security manager exists and its <code>checkListen</code> method doesn't allow the operation.<DT><B>See Also: </B><DD><A HREF="../../java/net/SocketImpl.html"><CODE>SocketImpl</CODE></A>, <A HREF="../../java/net/SocketImplFactory.html#createSocketImpl()"><CODE>SocketImplFactory.createSocketImpl()</CODE></A>, <A HREF="../../java/net/ServerSocket.html#setSocketFactory(java.net.SocketImplFactory)"><CODE>setSocketFactory(java.net.SocketImplFactory)</CODE></A>, <A HREF="../../java/lang/SecurityManager.html#checkListen(int)"><CODE>SecurityManager.checkListen(int)</CODE></A></DL></DD></DL><HR><A NAME="ServerSocket(int, int)"><!-- --></A><H3>ServerSocket</H3><PRE>⌨️ 快捷键说明
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