On Friday, September 25, 2015 at 12:55:01 PM UTC+5:30, Cameron Simpson wrote: > On 24Sep2015 22:46, shiva upreti <katewinslet...@gmail.com> wrote: > >On Friday, September 25, 2015 at 10:55:45 AM UTC+5:30, Cameron Simpson wrote: > >> On 24Sep2015 20:57, shiva upreti <katewinslet...@gmail.com> wrote: > >> >Thank you Cameron. > >> >I think the problem with my code is that it just hangs without raising > >> >any > >> >exceptions. And as mentioned by Laura above that when I press CTRL+C, it > >> >just catches that exception and prints ConnectionError which is > >> >definitely > >> >a lie in this case as you mentioned. > > Ok. You original code says: > > try: > r=requests.post(url, data=query_args) > except: > print "Connection error" > > and presumably we think your code is hanging inside the requests.post call? > You > should probably try to verify that, because if it is elsewhere you need to > figure out where (lots of print statements is a first start on that). > > I would open two terminals. Run your program until it hangs in one. > > While it is hung, examine the network status. I'll presume you're on a UNIX > system of some kind, probably Linux? If not it may be harder (or just require > someone other than me). > > If it is hung in the .post call, quite possibly it has an established > connecion > to the target server - maybe that server is hanging. > > The shell command: > > netstat -rn | fgrep 172.16.68.6 | fgrep 8090 > > will show every connection to your server hosting the URL > "http://172.16.68.6:8090/login.xml";. That will tell you if you have a > connection (if you are the only person doing the connecting from your > machine). > > If you have the "lsof" program (possibly in /usr/sbin, so "/usr/sbin/lsof") > you > can also examine the state of your hung Python program. This: > > lsof -p 12345 > > will report on the open files and network connections of the process with pid > 12345. Adjust to suit: you can find your program's pid ("process id") with > the > "ps" command, or by backgrounding your program an issuing the "jobs" command, > which should show the process id more directly. > > Cheers, > Cameron Simpson <c...@zip.com.au>
Hi Cameron. Yes I use ubuntu 14.04. I will try what you suggested. But I cant understand one thing, for whatever reason the script is hanging, why does it resumes almost instantaneously when I press CTRL+C. Thanks. -- https://mail.python.org/mailman/listinfo/python-list
