Good evening,
Over the past few years, I have been developing a python library to
communicate (via http) with internet accessible webcameras from Canon.
Anyway, with my migration to rhel5 (from el3...el4) I have had problems
communicating with some of these cameras from el5 clients (python urllib2
and firefox). Strangely, a basic telnet connection to port 80 works :/
The symptom is from the connection to just hang there. So I fired up
wireshark and noticed that it said this when my client sends the HTTP
command:
checksum incorrect (maybe cased by TCP checksum offload)
and then a series of TCP Previous segment lost, Dup ACK 8 and other stuff
I don't understand :)
I take my same python code or firefox and go to rhel4 and it works just
fine. I also fired up windows xp in my vmware vm on rhel5 and it works
there (don't hate me!). I also have many other systems and invariably, it
fails on rhel5 and works on rhel4 to some of these webcams.
Anybody have any ideas what to try next or what could be wrong? Of the 30
webcams I test against, it is often failing for 6 of them.
thanks!
daryl
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