[Click] element for reading UDP packets

[Eddie Kohler]

The following IPClassifier selects all UDP packets and emits them on
output 0. All other packets go to output 1

f :: IPClassifier(udp, -)


IPFilter's code is complex because it is basically a compiler. If youw
ant to see how to access a UDP packet's fields look at IPPrint, or
CheckUDPHeader.  Use p->udp_header() for example

Eddie


On Tue, Nov 8, 2011 at 12:13 PM, Surendran P <mprsuren at gmail.com> wrote:
> Hi,
>  I am new to click. i'm trying to filter the packets on a particular UDP
> port and extract the packet information elements from it.
> I don't see element already defined for it. if i'm wrong, please guide to
> the correct element to do that.
> otherwise, please help me how could i write a new elements for UDP port ?.
> Actually, i can write a basic element. but by seeing the IPFilter, i dont
> understand how the code flow/logic goes in it and couldn't get the proper
> documentation for it as well. I'm almost confused for UDP. so, someone
> please help me to do this.
>
> i'm using click-2.0.1
>
> Thanks,
> Surendran
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