Hi,
I am writing an application using the libpcap library that is capable
of caching and replaying frames. I originally wrote and tested this
program using a embedded ALIX system that runs a 500Mhz Geode
processor. I felt that the slow performance of this CPU was causing a
few problems so I d
On Jan 12, 2009, at 8:44 PM, David Murray wrote:
I am writing an application using the libpcap library that is
capable of caching and replaying frames. I originally wrote and
tested this program using a embedded ALIX system that runs a 500Mhz
Geode processor. I felt that the slow performan
Hi,
I am writing a little pcap program that is capable of caching and
replaying packets. I was originally running the program on a little
embedded x86 AMD Geode but as I was a little concerned with performance
I decided I would like to see the difference when running on a desktop.
So, I moved
On Jan 12, 2009, at 8:31 PM, David Murray wrote:
Perhaps an important difference between the two systems is that on
the ALIX embedded system, packet injection is happening over a WiFi
NIC whereas on the desktop system packet injection is happening on
the Desktop NIC.
Yes. See my earlier
Quoting Guy Harris :
I'm assuming your wired NICs are Ethernet NICs; the maximum payload
size for Ethernet is 1500 bytes.
The maximum payload size for IEEE 802.11 is 2304 bytes, at least
according to IEEE 802.11-1999:
6.2.1.1.2 Semantics of the service primitive
...
On Jan 12, 2009, at 9:05 PM, David Murray wrote:
Good point. However, the packets that I am capturing are going
end-to-end and they are being replayed to the same receiver.
Subsequently, the payload size of the frame should be less than 1500.
What *is* the payload size of a frame that's not b
Quoting Guy Harris :
On Jan 12, 2009, at 8:31 PM, David Murray wrote:
Perhaps an important difference between the two systems is that on
the ALIX embedded system, packet injection is happening over a WiFi
NIC whereas on the desktop system packet injection is happening on
the Desktop NIC.
I use tcpdump to capture the packets of one RTP stream in my rtsp
server,by the RTP sequence number,i found some packets had lost.
but in the client that conneted to this server in the same time ,use
tcpdump capture the packets of this RTP stream,i do not found
lost packet.i don't konw why? som
