Thread: Reading UDP header

  1. #1
    Registered User
    Join Date
    Feb 2009

    Reading UDP header

    I am injecting packets using sendto
    and receiving packets using recvfrom

    Is there a way to read the UDP headers which are used by the lower layer.

    I don't really want to go into raw sockets to do that....

  2. #2
    Registered User
    Join Date
    Apr 2008
    if this is just to check things, you can use a 3rd party tool to monitor the traffic like wireshark or tcpdump.

  3. #3
    Registered User
    Join Date
    Jul 2007
    UDP headers are just [src port][dst port][lenght][checksum]. There pretty much isn't anything you already don't know, system calls don't give you, or you can't compute easily.

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