Genarating TCP & UDP Packets!

[Srikanth Rentachintala]

Hi Everyone,

     I need to generate tcp and udp packets together (a mixture), i was trying
  
to use FastTCPFlows/FastUDPFlows but since both of them are pull type i am   
unable use neither of them as the first element in my program. can anyone   
suggest me an element that we can add before FastTCPFlows/FastUDPFlows?   
here is the chunk of program i want to start off with
   
FastUDPFlows(100000, 500000, 60,
              0:0:0:0:0:0, 1.0.0.1, 1234,
              1:1:1:1:1:1, 2.0.0.2, 1234,
              100, 10)   
-> print(ok,64)   
-> Discard ;

    second problem, can anyone suggest me an element which can generate valid  
Tcp or Udp packets randomly ( presently the RandomSource is generating  
non-valid packets because of which, when i am using CheckIPHeader, it is  
giving me errors as "invalid ip version" , " invalid ip length "). When i 
tried to use, InfiniteSource it is giving me all identical packets, but i need 
a random combination of Tcp and Udp packets.


   Thanx much in advance.

   Srikanth