keep ip address event

I want to keep track ip address where have 135 destination port then in next packet with same ip address have 4445 destination port. I try the code at below, but can't run it. how to solve it? please help.Thanks.



packet = jpcap.getPacket();
if(packet instanceof IPPacket){
IPPacket ipp = (IPPacket)packet;
InetAddress destAdd = ipp.dst_ip;
InetAddress srcAdd = ipp.src_ip;
if(ipp instanceof TCPPacket){
TCPPacket tcp = (TCPPacket)ipp;
int destPort = tcp.dst_port;
int srcPort = tcp.src_port;
if(destPort == 135 || destPort == 445)
{

System.out.println(srcAdd + " " + destAdd + " " +srcPort + " " + destPort);
Packet packet2 = jpcap.getPacket();
if(packet2 instanceof IPPacket){
IPPacket ipp2 = (IPPacket)packet2;
InetAddress destAdd2 = ipp2.dst_ip;
InetAddress srcAdd2 = ipp2.src_ip;
if(destAdd2 == destAdd && srcAdd2 == srcAdd ){
if(ipp2 instanceof TCPPacket){
TCPPacket tcp2 =(TCPPacket)ipp2;
int destPort2 = tcp2.dst_port;
int srcPort2 = tcp2.src_port;
if(destPort2 == 4444 || destPort2 == 9996){

System.out.println(srcAdd2 + " " + destAdd2 + " " +srcPort2 + " " + destPort2);
}

}
}
}
}

What does "but can't run it" mean?
Errors?
Exceptions?
Stack traces?

Also, when posting code please use [code] tags [/code].

it run till line System.out.println(srcAdd + " " + destAdd + " " +srcPort + " " + destPort);
then stuck.


i new at here.sorry about the code tags.

Then I'd suggest adding in some more debugging statements to find out exactly where it is getting stuck.
I can't follow the flow of that code as it stands with no formatting.

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