# httpGet calls to Kepware REST API - IOError: Unexpected end of file from server **URL:** \ **Category:** Ignition\ **Created:** [August 23, 2019, 7:14pm UTC](https://forum.inductiveautomation.com/t/httpget-calls-to-kepware-rest-api-ioerror-unexpected-end-of-file-from-server/27730 "2019-08-23T19:14:58Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![whitson.brandon](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/whitson.brandon/32/79016_2.png) [@whitson.brandon](https://forum.inductiveautomation.com/u/whitson.brandon)\ **Post date:** [August 23, 2019, 7:14pm UTC](https://forum.inductiveautomation.com/t/httpget-calls-to-kepware-rest-api-ioerror-unexpected-end-of-file-from-server/27730/1 "2019-08-23T19:14:58Z")
I need some help with system.net.httpGet / Post Background - Ignition 7.9.10 Kepware 6.6.350.0 When I send the following r = system.net.httpGet("[http://127.0.0.1:57412/config/v1/project/channels/ENU](http://127.0.0.1:57412/config/v1/project/channels/ENU) Tower/",username="XXXXXXXXXX") It returns - "IOError: Unexpected end of file from server" however when I send r = system.net.httpGet("[http://127.0.0.1:57412/config/v1/project/channels/",username="XXXXXXXXX](http://127.0.0.1:57412/config/v1/project/channels/%22,username=%22XXXXXXXXX)") I get a valid response from Kepware. Here's the strange part.... When I use Postman to send Get and Post calls everything works fine. I can post the responses from Potman but excluded them for now as they are extremely lengthy. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [August 23, 2019, 7:21pm UTC](https://forum.inductiveautomation.com/t/httpget-calls-to-kepware-rest-api-ioerror-unexpected-end-of-file-from-server/27730/2 "2019-08-23T19:21:44Z")
Maybe you can spot the difference between Postman and the call that doesn’t work using Wireshark? ---
**Author:** ![whitson.brandon](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/whitson.brandon/32/79016_2.png) [@whitson.brandon](https://forum.inductiveautomation.com/u/whitson.brandon)\ **Post date:** [August 23, 2019, 7:25pm UTC](https://forum.inductiveautomation.com/t/httpget-calls-to-kepware-rest-api-ioerror-unexpected-end-of-file-from-server/27730/3 "2019-08-23T19:25:37Z")
I was really trying to avoid packet capture... I'll fire up WireShark... Let you know what I find... ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [August 23, 2019, 7:38pm UTC](https://forum.inductiveautomation.com/t/httpget-calls-to-kepware-rest-api-ioerror-unexpected-end-of-file-from-server/27730/4 "2019-08-23T19:38:11Z")
“IOError: Unexpected end of file from server” means the server (or something else) closed the connection for some reason. Since you can successfully make a request to a different URI it’s probably not something else, like a firewall or AV, and it’s KSE doing it for some reason. If there were any logs to indicate why they’d be in KSE, not Ignition, so a packet capture seems like an easy next step. ---
**Author:** ![whitson.brandon](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/whitson.brandon/32/79016_2.png) [@whitson.brandon](https://forum.inductiveautomation.com/u/whitson.brandon)\ **Post date:** [August 23, 2019, 7:42pm UTC](https://forum.inductiveautomation.com/t/httpget-calls-to-kepware-rest-api-ioerror-unexpected-end-of-file-from-server/27730/5 "2019-08-23T19:42:19Z")
Yep.... Packet Capture Done..... Here's what I found..... If I send with %20 in the spaces I get get a response.... system.net.httpGet("[http://127.0.0.1:57412/config/v1/project/channels/ENU%20Tower/devices/Testing%20The%20API/meter\_groups/",username="XXX](http://127.0.0.1:57412/config/v1/project/channels/ENU%20Tower/devices/Testing%20The%20API/meter_groups/%22,username=%22XXX)") If I send with spaces I get the error.... system.net.httpGet("[http://127.0.0.1:57412/config/v1/project/channels/ENU](http://127.0.0.1:57412/config/v1/project/channels/ENU) Tower/devices/Testing The API/meter\_groups/",username="XXX") ARG Not a huge deal I can just run replace(" ","%20") on my url strings before passing them into the argument. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [August 23, 2019, 7:52pm UTC](https://forum.inductiveautomation.com/t/httpget-calls-to-kepware-rest-api-ioerror-unexpected-end-of-file-from-server/27730/6 "2019-08-23T19:52:33Z")
You might be able to use python’s urlencode function: [https://docs.python.org/2/library/urllib.html#urllib.urlencode](https://docs.python.org/2/library/urllib.html#urllib.urlencode) You’ll have to see if it’s actually part of the version of Jython we ship though. ---
**Author:** ![whitson.brandon](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/whitson.brandon/32/79016_2.png) [@whitson.brandon](https://forum.inductiveautomation.com/u/whitson.brandon)\ **Post date:** [August 23, 2019, 8:03pm UTC](https://forum.inductiveautomation.com/t/httpget-calls-to-kepware-rest-api-ioerror-unexpected-end-of-file-from-server/27730/7 "2019-08-23T20:03:31Z")
I was kinda expecting the function call to format the url properly? The doc just says to pass it a url... All though the second code snippet does have the %20 in the url... Any chance we could have it put in as a bug... Honestly I'm surprised no one else has ever had this issue.. Must not be a commonly used function. - Or I'm just a moron ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [August 23, 2019, 8:04pm UTC](https://forum.inductiveautomation.com/t/httpget-calls-to-kepware-rest-api-ioerror-unexpected-end-of-file-from-server/27730/8 "2019-08-23T20:04:45Z")
It’s very commonly used, but spaces in URLs are less common I guess. and FWIW, a string with spaces in it is not technically a URL, because URLs cannot contain spaces. ---
**Author:** ![whitson.brandon](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/whitson.brandon/32/79016_2.png) [@whitson.brandon](https://forum.inductiveautomation.com/u/whitson.brandon)\ **Post date:** [August 23, 2019, 8:05pm UTC](https://forum.inductiveautomation.com/t/httpget-calls-to-kepware-rest-api-ioerror-unexpected-end-of-file-from-server/27730/9 "2019-08-23T20:05:28Z")
Confirmed - Moron Status.... 😜 ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [August 23, 2019, 8:07pm UTC](https://forum.inductiveautomation.com/t/httpget-calls-to-kepware-rest-api-ioerror-unexpected-end-of-file-from-server/27730/10 "2019-08-23T20:07:08Z")
I do think it would be nice if it URL-encoded things for you… but then if someone passed an already encoded / proper URL, it would get double-encoded… ---
**Author:** ![whitson.brandon](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/whitson.brandon/32/79016_2.png) [@whitson.brandon](https://forum.inductiveautomation.com/u/whitson.brandon)\ **Post date:** [August 23, 2019, 8:09pm UTC](https://forum.inductiveautomation.com/t/httpget-calls-to-kepware-rest-api-ioerror-unexpected-end-of-file-from-server/27730/11 "2019-08-23T20:09:00Z")
Right... Well thanks for the help Kevin....