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<html><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><!--Converted with jLaTeX2HTML 2002 (1.62) JA patch-1.4patched version by: Kenshi Muto, Debian Project.LaTeX2HTML 2002 (1.62),original version by: Nikos Drakos, CBLU, University of Leeds* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan* with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --><HTML><HEAD><TITLE>33.5 Loss Recovery Objects</TITLE><META NAME="description" CONTENT="33.5 Loss Recovery Objects"><META NAME="keywords" CONTENT="everything"><META NAME="resource-type" CONTENT="document"><META NAME="distribution" CONTENT="global"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"><META NAME="Generator" CONTENT="jLaTeX2HTML v2002 JA patch-1.4"><META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css"><LINK REL="STYLESHEET" HREF="everything.css" tppabs="http://www.isi.edu/nsnam/ns/doc/everything.css"><LINK REL="next" HREF="node450.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node450.html"><LINK REL="previous" HREF="node445.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node445.html"><LINK REL="up" HREF="node427.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node427.html"><LINK REL="next" HREF="node447.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node447.html"></HEAD><BODY ><!--Navigation Panel--><A NAME="tex2html8244" HREF="node447.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node447.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html8238" HREF="node427.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node427.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html8232" HREF="node445.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node445.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html8240" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html"><IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="file:/usr/share/latex2html/icons/contents.png"></A> <A NAME="tex2html8242" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html"><IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="file:/usr/share/latex2html/icons/index.png"></A> <BR><B> Next:</B> <A NAME="tex2html8245" HREF="node447.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node447.html">33.5.0.0.1 Request Mechanisms</A><B> Up:</B> <A NAME="tex2html8239" HREF="node427.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node427.html">33. Agent/SRM</A><B> Previous:</B> <A NAME="tex2html8233" HREF="node445.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node445.html">33.4 Loss Detection The</A>   <B> <A NAME="tex2html8241" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html8243" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html">Index</A></B> <BR><BR><!--End of Navigation Panel--><H1><A NAME="SECTION06450000000000000000"></A><A NAME="sec:recovery"></A><BR>33.5 Loss Recovery Objects</H1><P>In the last section,we described the agent behavior when it receives a message.Timers are used to control when any particular control message is to be sent.The SRM agent uses a separateSRM../ns-2/srm.tclto do the timer based processing.In this section, we describe the basics if the class SRM,and the loss recovery objects.The following section will describe how the class SRM is used for sending periodic session messages.An SRM agent will instantiate one object to recover from one lost data packet.Agents that detect the loss will instantiate an object in theSRM/request../ns-2/srm.tcl;agents that receive a request and have the required data willinstantiate an object in the SRM/repair../ns-2/srm.tcl.<P><BR><HR><!--Table of Child-Links--><A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A><UL><LI><UL><LI><UL><LI><A NAME="tex2html8246" HREF="node447.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node447.html">33.5.0.0.1 Request Mechanisms</A><LI><A NAME="tex2html8247" HREF="node448.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node448.html">33.5.0.0.2 Repair Mechanisms</A><LI><A NAME="tex2html8248" HREF="node449.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node449.html">33.5.0.0.3 Mechanisms for Statistics</A></UL></UL></UL><!--End of Table of Child-Links--><BR><HR><ADDRESS>2003-09-23</ADDRESS></BODY></HTML>⌨️ 快捷键说明
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