[ns] Insert Custom header between IP and TCP/UDP
qasim_nust at yahoo.com
Tue Apr 11 11:46:25 PDT 2006
I want to insert an extra header of my own so that I can make some routing decisions based on the fields in that header. For example, in case of TCP, I want the TCP header to be encapsulated in my custom header and my customer header (along with TCP header and data) encapsulated in the IP header. How can I do that. I know how to define a new header but the problem is where should I insert the header i.e., which part of the code?
Below is a diagram showing what I want.
| IP Header |
| Custom Header |
| TCP/UDP Hdr |
Does anyone have any ideas how can I push a new header in between the IP and TCP header.
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