I understand you are running the same Python/KATCP version, but are you also running the same Python version on both a working and the non-working machines?
Are you running the same Linux distro on both a working and the non-working machines? Dave On May 21, 2013, at 2:01 PM, Haoxuan Zheng wrote: > Hi David, > Direct telnet works fine, and I get this message on telnet terminal when I > try the python katcp connect: > #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 > > I did make sure the version is the same. > > Thanks a lot! > Jeff > ________________________________________ > From: David MacMahon [dav...@berkeley.edu] on behalf of David MacMahon > [dav...@astro.berkeley.edu] > Sent: Tuesday, May 21, 2013 4:56 PM > To: Haoxuan Zheng > Cc: casper@lists.berkeley.edu > Subject: Re: [casper] Python katcp cannot connect FPGA > > 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> >