I need to connect to a third party webservice. When I hit the link directly in the chrome browser, I am able to connect to it and I get a response. But when I tried the same using Advanced REST Client app of chrome, I get a message as 'The service's server DNS address could not be found.'
Also, when I tried to connect it via my JAVA code, using spring's rest template, am getting an Unknown host exception. What could be the reason that am able to connect via browser but not otherwise?
Thanks in advance.
Maybe it's a problem with your system's DNS settings? I'm not sure how Chrome handles queries to DNS when primary DNS did not found the record. If it uses Google DNS' then Chrome may connect to the service but other applications can't.
To test it set your DNS to 8.8.8.8 and check if apps start working.
From browser it's working properly but not from rest client or application, then i guess the problem with the proxy.
if you are using your office network, then this issue will come.
Try hitting the webservice by connecting to personal network.
i have faced similar issue last week, from browser and postman i'm able to hit the web service but not from the application.
Ones i connected with my personal then it started working.
Hope it helps.
Related
I've developed an Android app relying on a REST server. The app works great on mobile network and also on my WiFi.
But when I try it at the university, it cannot connect to the server. The connection is an https on the standards ports (which aren't blocked). If I try to load the server URL in chrome it can reach the server.
I don't think it's a code related issue because some other android apps don't work here either. I think it's a firewall rule but what?
When I curl the the address of the server (the same as the android app), it returns correctly. Is it an user-agent filter or something like that ?
I don't know if it can be the cause but I self-signed my ssl certificate. Can it be related ?
What can cause this issue ? Is it a solution on my side ?
On my desktop I run Visual studio web server cassini and fiddler as a proxy, then I connect to a web site running in Cassini using an iPad connected via wireless.
This has always worked since I installed and unistalled the MVC pack for visual studio.
Now I get this message from fiddler (it is sent to the iPad):
[Fiddler] DNS Lookup for "http://175.33.22.116" failed. The requested name is valid, but no data of the requested type was found
There are similar posts with this message, but none of them with my setup.
Can you suggest what to check?
Thank you
This indicates that the traffic from your IPAD client is malformed. Are you using anything in Fiddler (e.g. Tools > HOSTS) to change the traffic? If not, the bug is on the client; e.g. something is trying to connect to http://http://175.33.22.116 which isn't legal (due to the double http:// within the string).
We have a website to which we have now added Windows authenication. Now when I release my changes to the server,IIS asks for Authenication, and after trying with right credentials for 3 times, I get Not autorized error.
If I try to access the website from within the server using localhost, it works fine. It also works fine if accessed remotely using IP address instead of hostname.
http://localhost/mysite works fine from within the server EXSER002.
http://IPADDRESS/mysite works fine
http://EXSER002/mysite fails with authentication.
The site use to work with the hostname prior to Windows authentication.
Even tried ping from local machine to the server and I can ping both the hostname as well as the IP address. Error I get is: You are not authorized to view this page
Do you have a proxy? If so, make sure that bypass is on for local addresses.
Check this link.
http://support.microsoft.com/kb/896861 .
The issue occurs due to the loopback check security feature .you need to make registry setting changes (as mentioned in the link) to get rid of the authentication failures.
I have some iOS 5 code that I am using to interface to an ASP.NET web service. The code can (seemingly) connect OK to my service but a blank reply is sent every time. I have stepped through the code and saw how iOS takes the service domain address and turns it into an IP address and tests for connection. Does it also use the IP address for a connection when running? The problem is that I have my service running on a shared ASP.NET box so mysite.com/mywebservice.asmx will resolve while an ip address like xxx.xxx.xxx.xxx/mywebservice.asmx will not resolve at all. Could this be the root cause of why my web request is blank every time?
I'm guessing your web site has a registered domain name which is auto-mapped to an IP . Therefore, according to a similar issue that we faced earlier, you need to analyze the full request that is being sent . Tools like - firebug http://getFirebug.com , poster https://addons.mozilla.org/en-US/firefox/addon/poster/ can be really handy for the same.
The issue I faced was solved by changing the "user-agent" header in the request from the IOS device.
So you can replace the value of the header you send with the one that is sent from the browser. Also, there can be some cookies being sent by the browser as a default behaviour.
I think those would be good directions to look, considering the web service you hit gives a reply to the browser.
I am using Weblogic seever for local testing..
I cannot cannot access http://my_machine_name in Firefox (e.g. http://xyz123)
The same can be accessed in IE/Safari
Please help me. Thank you
There's no fundamental reason why one browser would work and the other fail, so it's likely down to configuration of the browsers.
Following up JoseK's question - can you access your local WebLogic Server instance using an IP address rather than the machine name?
Also, is it possible that you've got a corporate HTTP proxy server configured for Firefox, but that it's not being used in IE? (I've hit this before on client site myself)
Last of all, can you definitely check via WebLogic Server's server log files or netstat that it's definitely binding to your public IP address on port 80 (and not using something else like a loopback address, for example?)
I am not sure if it has something to do with your problem but i know that firefox has its own dns-cache. Maybe (and only maybe) would it help to turn it off.