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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../jpcap/Jpcap.html#updateStat()">updateStat</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Updates <A HREF="../jpcap/Jpcap.html#received_packets"><CODE>received_packets</CODE></A> and <A HREF="../jpcap/Jpcap.html#dropped_packets"><CODE>dropped_packets</CODE></A></TD>
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<A NAME="received_packets"><!-- --></A><H3>
received_packets</H3>
<PRE>
public int <B>received_packets</B></PRE>
<DL>
<DD>Number of packets received<DD><DL>
<DT><B>See Also: </B><DD><A HREF="../jpcap/Jpcap.html#updateStat()"><CODE>updateStat()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="dropped_packets"><!-- --></A><H3>
dropped_packets</H3>
<PRE>
public int <B>dropped_packets</B></PRE>
<DL>
<DD>Number of packets dropped<DD><DL>
<DT><B>See Also: </B><DD><A HREF="../jpcap/Jpcap.html#updateStat()"><CODE>updateStat()</CODE></A></DL>
</DD>
</DL>

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<A NAME="Jpcap(java.lang.String, int, boolean, int)"><!-- --></A><H3>
Jpcap</H3>
<PRE>
public <B>Jpcap</B>(java.lang.String&nbsp;device,
             int&nbsp;snaplen,
             boolean&nbsp;promisc,
             int&nbsp;to_ms)
      throws java.io.IOException</PRE>
<DL>
<DD>Initializes the specified network interface and creates the instance of this class.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>device</CODE> - Name of the interface (eg: hme0,eth0)<DD><CODE>snaplen</CODE> - Maximum number of bytes captured at once<DD><CODE>promisc</CODE> - The specified interface goes promiscuous mode if true<DD><CODE>to_ms</CODE> - Time out of <A HREF="../jpcap/Jpcap.html#processPacket(int, jpcap.JpcapHandler)"><CODE>processPacket()</CODE></A><DT><B>Throws:</B><DD>java.io.IOException - If the speficied interface couldn't be open</DL>
</DD>
</DL>
<HR>

<A NAME="Jpcap(java.lang.String)"><!-- --></A><H3>
Jpcap</H3>
<PRE>
public <B>Jpcap</B>(java.lang.String&nbsp;filename)
      throws java.io.IOException</PRE>
<DL>
<DD>Opens the dump file created by tcpdump and creates the instance of this class.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>filename</CODE> - Name of dump file<DT><B>Throws:</B><DD>java.io.IOException - If the specified file couldn't open</DL>
</DD>
</DL>

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<A NAME="lookupDevice()"><!-- --></A><H3>
lookupDevice</H3>
<PRE>
public static java.lang.String <B>lookupDevice</B>()</PRE>
<DL>
<DD>Returns the name of the device which can be used for capturing.<DD><DL>
<DT><B>Returns:</B><DD>Name of the found device</DL>
</DD>
</DL>
<HR>

<A NAME="getPacket()"><!-- --></A><H3>
getPacket</H3>
<PRE>
public <A HREF="../jpcap/Packet.html">Packet</A> <B>getPacket</B>()</PRE>
<DL>
<DD>Captures one packet.</DL>
<HR>

<A NAME="processPacket(int, jpcap.JpcapHandler)"><!-- --></A><H3>
processPacket</H3>
<PRE>
public int <B>processPacket</B>(int&nbsp;count,
                         <A HREF="../jpcap/JpcapHandler.html">JpcapHandler</A>&nbsp;handler)</PRE>
<DL>
<DD>Captures the specified number of packets consecutively.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>count</CODE> - Maximum number of packets processing<BR>
			-1 means to process packets unlimitedly.<DD><CODE>handler</CODE> - The captures packets are passed to this JpcapHandler object to analyze<DT><B>Returns:</B><DD>Number of packet captured</DL>
</DD>
</DL>
<HR>

<A NAME="setFilter(java.lang.String, boolean)"><!-- --></A><H3>
setFilter</H3>
<PRE>
public void <B>setFilter</B>(java.lang.String&nbsp;condition,
                      boolean&nbsp;optimize)</PRE>
<DL>
<DD>Sets up the capturing filter.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>condition</CODE> - String which represents the condition of filtering. (See the document of tcpdump)<DD><CODE>optimize</CODE> - Filter is optimized if true</DL>
</DD>
</DL>
<HR>

<A NAME="updateStat()"><!-- --></A><H3>
updateStat</H3>
<PRE>
public void <B>updateStat</B>()</PRE>
<DL>
<DD>Updates <A HREF="../jpcap/Jpcap.html#received_packets"><CODE>received_packets</CODE></A> and <A HREF="../jpcap/Jpcap.html#dropped_packets"><CODE>dropped_packets</CODE></A></DL>
<HR>

<A NAME="openRawSocket()"><!-- --></A><H3>
openRawSocket</H3>
<PRE>
public void <B>openRawSocket</B>()</PRE>
<DL>
<DD>Initializes the sending socket.<BR>
 This method must be called before sending packets.</DL>
<HR>

<A NAME="sendPacket(jpcap.IPPacket)"><!-- --></A><H3>
sendPacket</H3>
<PRE>
public void <B>sendPacket</B>(<A HREF="../jpcap/IPPacket.html">IPPacket</A>&nbsp;packet)</PRE>
<DL>
<DD>Sends a IP packet.<BR>

 <BR>
 Currently only TCP/UDP/ICMP over IPv4 are supported.<BR>
 For ICMP, only echo packets can be sent.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>packet</CODE> - IP packet to be sent</DL>
</DD>
</DL>
<HR>

<A NAME="getErrorMessage()"><!-- --></A><H3>
getErrorMessage</H3>
<PRE>
public java.lang.String <B>getErrorMessage</B>()</PRE>
<DL>
<DD>Returns the error message which was caused by the error while capturing.</DL>
<HR>

<A NAME="close()"><!-- --></A><H3>
close</H3>
<PRE>
public void <B>close</B>()</PRE>
<DL>
<DD>Close the interface or dump file which is currently opened.</DL>
<HR>

<A NAME="getJpcapInfo()"><!-- --></A><H3>
getJpcapInfo</H3>
<PRE>
public <A HREF="../jpcap/Jpcap.JpcapInfo.html">Jpcap.JpcapInfo</A> <B>getJpcapInfo</B>()</PRE>
<DL>
<DD>Return JpcapInfo of this Jpcap instance.</DL>
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