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TFTPPacket (libcommons-net2-java API)
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org.apache.commons.net.tftp</FONT>
<BR>
Class TFTPPacket</H2>
<PRE>
<A HREF="file:///usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.commons.net.tftp.TFTPPacket</B>
</PRE>
<DL>
<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../../org/apache/commons/net/tftp/TFTPAckPacket.html" title="class in org.apache.commons.net.tftp">TFTPAckPacket</A>, <A HREF="../../../../../org/apache/commons/net/tftp/TFTPDataPacket.html" title="class in org.apache.commons.net.tftp">TFTPDataPacket</A>, <A HREF="../../../../../org/apache/commons/net/tftp/TFTPErrorPacket.html" title="class in org.apache.commons.net.tftp">TFTPErrorPacket</A>, <A HREF="../../../../../org/apache/commons/net/tftp/TFTPRequestPacket.html" title="class in org.apache.commons.net.tftp">TFTPRequestPacket</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public abstract class <B>TFTPPacket</B><DT>extends <A HREF="file:///usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></DL>
</PRE>
<P>
TFTPPacket is an abstract class encapsulating the functionality common
to the 5 types of TFTP packets. It also provides a static factory
method that will create the correct TFTP packet instance from a
datagram. This relieves the programmer from having to figure out what
kind of TFTP packet is contained in a datagram and create it himself.
<p>
Details regarding the TFTP protocol and the format of TFTP packets can
be found in RFC 783. But the point of these classes is to keep you
from having to worry about the internals. Additionally, only very
few people should have to care about any of the TFTPPacket classes
or derived classes. Almost all users should only be concerned with the
<A HREF="../../../../../org/apache/commons/net/tftp/TFTPClient.html" title="class in org.apache.commons.net.tftp"><CODE>TFTPClient</CODE></A> class
<A HREF="../../../../../org/apache/commons/net/tftp/TFTPClient.html#receiveFile(java.lang.String, int, java.io.OutputStream, java.net.InetAddress, int)"><CODE>receiveFile()</CODE></A>
and
<A HREF="../../../../../org/apache/commons/net/tftp/TFTPClient.html#sendFile(java.lang.String, int, java.io.InputStream, java.net.InetAddress, int)"><CODE>sendFile()</CODE></A>
methods.
<p>
<p>
<P>
<P>
<DL>
<DT><B>Author:</B></DT>
<DD>Daniel F. Savarese</DD>
<DT><B>See Also:</B><DD><A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacketException.html" title="class in org.apache.commons.net.tftp"><CODE>TFTPPacketException</CODE></A>,
<A HREF="../../../../../org/apache/commons/net/tftp/TFTP.html" title="class in org.apache.commons.net.tftp"><CODE>TFTP</CODE></A></DL>
<HR>
<P>
<!-- =========== FIELD SUMMARY =========== -->
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
<B>Field Summary</B></FONT></TH>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacket.html#ACKNOWLEDGEMENT">ACKNOWLEDGEMENT</A></B></CODE>
<BR>
This is the actual TFTP spec
identifier and is equal to 4.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacket.html#DATA">DATA</A></B></CODE>
<BR>
This is the actual TFTP spec
identifier and is equal to 3.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacket.html#ERROR">ERROR</A></B></CODE>
<BR>
This is the actual TFTP spec
identifier and is equal to 5.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacket.html#READ_REQUEST">READ_REQUEST</A></B></CODE>
<BR>
This is the actual TFTP spec
identifier and is equal to 1.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacket.html#SEGMENT_SIZE">SEGMENT_SIZE</A></B></CODE>
<BR>
The TFTP data packet maximum segment size in bytes.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacket.html#WRITE_REQUEST">WRITE_REQUEST</A></B></CODE>
<BR>
This is the actual TFTP spec
identifier and is equal to 2.</TD>
</TR>
</TABLE>
<!-- ========== METHOD SUMMARY =========== -->
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<B>Method Summary</B></FONT></TH>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="file:///usr/share/doc/default-jdk-doc/api/java/net/InetAddress.html?is-external=true" title="class or interface in java.net">InetAddress</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacket.html#getAddress()">getAddress</A></B>()</CODE>
<BR>
Returns the address of the host where the packet is going to be sent
or where it came from.</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="../../../../../org/apache/commons/net/tftp/TFTPPacket.html#getPort()">getPort</A></B>()</CODE>
<BR>
Returns the port where the packet is going to be sent
or where it came from.</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="../../../../../org/apache/commons/net/tftp/TFTPPacket.html#getType()">getType</A></B>()</CODE>
<BR>
Returns the type of the packet.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract <A HREF="file:///usr/share/doc/default-jdk-doc/api/java/net/DatagramPacket.html?is-external=true" title="class or interface in java.net">DatagramPacket</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacket.html#newDatagram()">newDatagram</A></B>()</CODE>
<BR>
Creates a UDP datagram containing all the TFTP packet
data in the proper format.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static <A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacket.html" title="class in org.apache.commons.net.tftp">TFTPPacket</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacket.html#newTFTPPacket(java.net.DatagramPacket)">newTFTPPacket</A></B>(<A HREF="file:///usr/share/doc/default-jdk-doc/api/java/net/DatagramPacket.html?is-external=true" title="class or interface in java.net">DatagramPacket</A> datagram)</CODE>
<BR>
When you receive a datagram that you expect to be a TFTP packet, you use
this factory method to create the proper TFTPPacket object
encapsulating the data contained in that datagram.</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="../../../../../org/apache/commons/net/tftp/TFTPPacket.html#setAddress(java.net.InetAddress)">setAddress</A></B>(<A HREF="file:///usr/share/doc/default-jdk-doc/api/java/net/InetAddress.html?is-external=true" title="class or interface in java.net">InetAddress</A> address)</CODE>
<BR>
Sets the host address where the packet is going to be sent.</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="../../../../../org/apache/commons/net/tftp/TFTPPacket.html#setPort(int)">setPort</A></B>(int port)</CODE>
<BR>
Sets the port where the packet is going to be sent.</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="file:///usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="file:///usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="file:///usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="file:///usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="file:///usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="file:///usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="file:///usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="file:///usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="file:///usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="file:///usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="file:///usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="file:///usr/share/doc/default-jdk-doc/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
</TR>
</TABLE>
<P>
<!-- ============ FIELD DETAIL =========== -->
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<B>Field Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="READ_REQUEST"><!-- --></A><H3>
READ_REQUEST</H3>
<PRE>
public static final int <B>READ_REQUEST</B></PRE>
<DL>
<DD>This is the actual TFTP spec
identifier and is equal to 1.
Identifier returned by <A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacket.html#getType()"><CODE>getType()</CODE></A>
indicating a read request packet.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#org.apache.commons.net.tftp.TFTPPacket.READ_REQUEST">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="WRITE_REQUEST"><!-- --></A><H3>
WRITE_REQUEST</H3>
<PRE>
public static final int <B>WRITE_REQUEST</B></PRE>
<DL>
<DD>This is the actual TFTP spec
identifier and is equal to 2.
Identifier returned by <A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacket.html#getType()"><CODE>getType()</CODE></A>
indicating a write request packet.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#org.apache.commons.net.tftp.TFTPPacket.WRITE_REQUEST">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="DATA"><!-- --></A><H3>
DATA</H3>
<PRE>
public static final int <B>DATA</B></PRE>
<DL>
<DD>This is the actual TFTP spec
identifier and is equal to 3.
Identifier returned by <A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacket.html#getType()"><CODE>getType()</CODE></A>
indicating a data packet.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#org.apache.commons.net.tftp.TFTPPacket.DATA">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="ACKNOWLEDGEMENT"><!-- --></A><H3>
ACKNOWLEDGEMENT</H3>
<PRE>
public static final int <B>ACKNOWLEDGEMENT</B></PRE>
<DL>
<DD>This is the actual TFTP spec
identifier and is equal to 4.
Identifier returned by <A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacket.html#getType()"><CODE>getType()</CODE></A>
indicating an acknowledgement packet.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#org.apache.commons.net.tftp.TFTPPacket.ACKNOWLEDGEMENT">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="ERROR"><!-- --></A><H3>
ERROR</H3>
<PRE>
public static final int <B>ERROR</B></PRE>
<DL>
<DD>This is the actual TFTP spec
identifier and is equal to 5.
Identifier returned by <A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacket.html#getType()"><CODE>getType()</CODE></A>
indicating an error packet.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#org.apache.commons.net.tftp.TFTPPacket.ERROR">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="SEGMENT_SIZE"><!-- --></A><H3>
SEGMENT_SIZE</H3>
<PRE>
public static final int <B>SEGMENT_SIZE</B></PRE>
<DL>
<DD>The TFTP data packet maximum segment size in bytes. This is 512
and is useful for those familiar with the TFTP protocol who want
to use the <A HREF="../../../../../org/apache/commons/net/tftp/TFTP.html" title="class in org.apache.commons.net.tftp"><CODE>TFTP</CODE></A>
class methods to implement their own TFTP servers or clients.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#org.apache.commons.net.tftp.TFTPPacket.SEGMENT_SIZE">Constant Field Values</A></DL>
</DL>
<!-- ============ METHOD DETAIL ========== -->
<A NAME="method_detail"><!-- --></A>
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<B>Method Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="newTFTPPacket(java.net.DatagramPacket)"><!-- --></A><H3>
newTFTPPacket</H3>
<PRE>
public static final <A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacket.html" title="class in org.apache.commons.net.tftp">TFTPPacket</A> <B>newTFTPPacket</B>(<A HREF="file:///usr/share/doc/default-jdk-doc/api/java/net/DatagramPacket.html?is-external=true" title="class or interface in java.net">DatagramPacket</A> datagram)
throws <A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacketException.html" title="class in org.apache.commons.net.tftp">TFTPPacketException</A></PRE>
<DL>
<DD>When you receive a datagram that you expect to be a TFTP packet, you use
this factory method to create the proper TFTPPacket object
encapsulating the data contained in that datagram. This method is the
only way you can instantiate a TFTPPacket derived class from a
datagram.
<p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>datagram</CODE> - The datagram containing a TFTP packet.
<DT><B>Returns:</B><DD>The TFTPPacket object corresponding to the datagram.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../../org/apache/commons/net/tftp/TFTPPacketException.html" title="class in org.apache.commons.net.tftp">TFTPPacketException</A></CODE> - If the datagram does not contain a valid
TFTP packet.</DL>
</DD>
</DL>
<HR>
<A NAME="newDatagram()"><!-- --></A><H3>
newDatagram</H3>
<PRE>
public abstract <A HREF="file:///usr/share/doc/default-jdk-doc/api/java/net/DatagramPacket.html?is-external=true" title="class or interface in java.net">DatagramPacket</A> <B>newDatagram</B>()</PRE>
<DL>
<DD>Creates a UDP datagram containing all the TFTP packet
data in the proper format.
This is an abstract method, exposed to the programmer in case he
wants to implement his own TFTP client instead of using
the <A HREF="../../../../../org/apache/commons/net/tftp/TFTPClient.html" title="class in org.apache.commons.net.tftp"><CODE>TFTPClient</CODE></A>
class.
Under normal circumstances, you should not have a need to call this
method.
<p>
<P>
<DD><DL>
<DT><B>Returns:</B><DD>A UDP datagram containing the TFTP packet.</DL>
</DD>
</DL>
<HR>
<A NAME="getType()"><!-- --></A><H3>
getType</H3>
<PRE>
public final int <B>getType</B>()</PRE>
<DL>
<DD>Returns the type of the packet.
<p>
<P>
<DD><DL>
<DT><B>Returns:</B><DD>The type of the packet.</DL>
</DD>
</DL>
<HR>
<A NAME="getAddress()"><!-- --></A><H3>
getAddress</H3>
<PRE>
public final <A HREF="file:///usr/share/doc/default-jdk-doc/api/java/net/InetAddress.html?is-external=true" title="class or interface in java.net">InetAddress</A> <B>getAddress</B>()</PRE>
<DL>
<DD>Returns the address of the host where the packet is going to be sent
or where it came from.
<p>
<P>
<DD><DL>
<DT><B>Returns:</B><DD>The type of the packet.</DL>
</DD>
</DL>
<HR>
<A NAME="getPort()"><!-- --></A><H3>
getPort</H3>
<PRE>
public final int <B>getPort</B>()</PRE>
<DL>
<DD>Returns the port where the packet is going to be sent
or where it came from.
<p>
<P>
<DD><DL>
<DT><B>Returns:</B><DD>The port where the packet came from or where it is going.</DL>
</DD>
</DL>
<HR>
<A NAME="setPort(int)"><!-- --></A><H3>
setPort</H3>
<PRE>
public final void <B>setPort</B>(int port)</PRE>
<DL>
<DD>Sets the port where the packet is going to be sent.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="setAddress(java.net.InetAddress)"><!-- --></A><H3>
setAddress</H3>
<PRE>
public final void <B>setAddress</B>(<A HREF="file:///usr/share/doc/default-jdk-doc/api/java/net/InetAddress.html?is-external=true" title="class or interface in java.net">InetAddress</A> address)</PRE>
<DL>
<DD>Sets the host address where the packet is going to be sent.
<P>
<DD><DL>
</DL>
</DD>
</DL>
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