Hello all
Thanks to your answers, and thanks to Charles Swiger
for mentioning the timeout value, i went to the
manpage and re-read that, and figured out that I had
misinterpreted the timeout purpose. I thought that if
I set it to zero, I would wait forever and as soon as
a packet arrived I would
Hello
--- Charles Swiger <[EMAIL PROTECTED]> wrote:
> pcap_dispatch() will not
> necessarily
> return when the read times out; on some
> platforms, the read
> timeout
> isn't supported, and, on other platforms,
> the timer doesn't
> start until
> at least one packe
On May 21, 2005, at 12:27 PM, Daniel Valencia wrote:
[ ...pcap reading code stalling... ]
Is this normal pcap behaviour, or is it some
FreeBSD-specific behaviour, or is it just me?
It's unfortunately normal. You're running into this (from "man pcap"):
NOTE: when reading a live capture
On May 20, 2005, at 11:16 PM, Daniel Valencia wrote:
I know this may sound funny, but I'm still wrestling
with libpcap because I send packets and I cannot read
them. I tried also some example code of a toy sniffer
from a tutorial to pcap, and it behaves just like my
code. As my code is pretty c
Hello and thanks for your prompt answer...
I followed your (Jon Simola's) advice, so i defined
BUFSIZ as 2000, although my tutorial said it was
defined somewhere in the pcap headers, and added a
pcap_loop instead of the pcap_next. I also modified
the program to only show packets that are sent fro
On 5/20/05, Daniel Valencia <[EMAIL PROTECTED]> wrote:
> my sniffer just stalls and eventually will report a totally unrelated message.
...
> handle = pcap_open_live( "xl0", BUFSIZ, 1, 0, errbuf );
Uh, you're asking it to wait forever to see a packet. I don't see a
#define in there for BU
Hello all,
I know this may sound funny, but I'm still wrestling
with libpcap because I send packets and I cannot read
them. I tried also some example code of a toy sniffer
from a tutorial to pcap, and it behaves just like my
code. As my code is pretty compact, I'm posting it
here.
I'm sending
Daniel Valencia wrote:
About my previous message, I think that the problem is
that i'm using a switch, where I thought I had a
hub... If I'm sending ethernet broadcast packets...
will they be forwarded to all the ports of a switch??
Broadcast packets will go to all the ports on a switch. They'd ha
Daniel Valencia wrote:
[ ...pcap delays... ]
Has anyone in this list had any experience with
libpcap over fbsd that can point me into the right
direction?
Sure. Are you trying to use non-blocking mode of PCAP by any chance? I found
that to be fairly busted on FreeBSD and would drop lots of packe
Uhmm...
About my previous message, I think that the problem is
that i'm using a switch, where I thought I had a
hub... If I'm sending ethernet broadcast packets...
will they be forwarded to all the ports of a switch??
Probably the answer is No, and that's why I'm getting
that behaviour
Thank yo
Hello all, and thanks for your input.
I was able to send packets using libnet, and i could
confirm that the messages were propperly sent using
tcpdump... Now I needed to read the packets from
another node, so I tried libpcap... then the problem
arised. It would wait for ages, even after I sent a
Greetings and Salutations:
On 5/3/05 7:33 PM, "Daniel Valencia" <[EMAIL PROTECTED]> wrote:
> I'm doing research on network-layer protocols, so I
> need a way to send packets straight into layer 2. So
> far i've been reffered to raw sockets, but i've read
> the code and i cannot skip header checki
On May 3, 2005, at 8:33 PM, Daniel Valencia wrote:
I'm doing research on network-layer protocols, so I
need a way to send packets straight into layer 2. So
far i've been reffered to raw sockets, but i've read
the code and i cannot skip header checking and that
stuff... Is there a way to interact
Daniel Valencia wrote:
Hello all
I'm doing research on network-layer protocols, so I
need a way to send packets straight into layer 2. So
far i've been reffered to raw sockets, but i've read
the code and i cannot skip header checking and that
stuff... Is there a way to interact with the network
Hello all
I'm doing research on network-layer protocols, so I
need a way to send packets straight into layer 2. So
far i've been reffered to raw sockets, but i've read
the code and i cannot skip header checking and that
stuff... Is there a way to interact with the network
if in a way that I can
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