Hi, Jeff,
No clues yet. How about if you telnet from the non-working computer to the
ROACH2 using port 7147:
telent 10.0.0.200 7147
Does it connect and stay connected? If it stays connected, does it return a
bunch of help text when you enter this command:
?help
If that all works over telnet from the non-sorking computer, then it must be
some sort of weird Python or Python/KATCP issue. Are you running the same
Python version on both working and non-working machines?
I don't know how to use the logger option of Python/KATCP.
Dave
On May 21, 2013, at 1:36 PM, Haoxuan Zheng wrote:
> Hi David,
> I tried everything you suggested, and here's what I got:
> 1) I don't see any new messages with dmesg on ROACH2 after the attempted
> connection; maybe I did something wrong? I have never used dmesg before.
> 2) I attached the wireshark screen shot comparing the working computer and
> the non-working on. Basically the non-working computer goes through all the
> processes that the working computer does, and then actively closes the
> connection with [FIN, ACK]. Does this give any clues?
> 3) The non-working computer had 0.7.3 which was newer than the working 0.7.1,
> but uninstalling and installing 0.7.1 did not solve the problem.
>
>
> Thanks a lot!
> Jeff
>
> ________________________________________
> From: David MacMahon [dav...@berkeley.edu] on behalf of David MacMahon
> [dav...@astro.berkeley.edu]
> Sent: Monday, May 20, 2013 12:58 PM
> To: Haoxuan Zheng
> Cc: casper@lists.berkeley.edu
> Subject: Re: [casper] Python katcp cannot connect FPGA
>
> Hi, Jeff,
>
> That sounds like a weird one! Here are some ideas to try:
>
> 1) Check the output of "dmesg" on the roach2 after the problem occurs.
>
> 2) Watch the network traffic between the problematic machine and the roach2
> using tcpdump or wireshark.
>
> 3) Verify that the problematic computer is using the same python katcp
> version as the working computers.
>
> Please send a message to the list once you figure it out. You'll likely make
> some CASPER mailing list archive reader very happy in the future! :-)
>
> Hope this helps,
> Dave
>
> On May 20, 2013, at 9:01 AM, Haoxuan Zheng wrote:
>
>> Hi CASPER,
>> Sorry for the spam, but since my original message was sent at the worst hour
>> of the week (Friday evening), I would like to give it another try:
>>
>> Our lab just got a new server which will be our data taking computer, and it
>> has trouble connecting to our ROACH 2 through python katcp. Whenever I do
>> fpga = corr.katcp_wrapper.FpgaClient('10.0.0.200', 7147, timeout = 60),
>> fpga.is_connected() always say False. Here are some clues:
>>
>> 1) When I run the above command, I see the following on a separate telnet
>> 7147 connection on the ROACH2 (which runs fine), and the client-disconnected
>> message comes right after the client-connected message:
>>
>> #log info 946685931331 raw new\_client\_connection\_10.0.0.11:44001
>> #client-connected 10.0.0.11:44001
>> #client-disconnected 10.0.0.11:44001
>>
>> 2) The new computer connects to the ROACH1s fine with python katcp.
>>
>> 3) All other computers connect to the ROACH2s fine with python katcp.
>>
>> I'm not sure if anyone else has experienced similar issues? Any help would
>> be greatly appreciated!
>>
>> Thanks a lot!
>> Jeff
>
> <wireshark katcp.PNG>
