I am trying to make an Http connection in a J2ME application.
Problem is that it is running fine in the emulator; but in a mobile, it is showing IO exception- Error in Http Operation.
Can anyone tell me what prompts this kind of error.
Thanks in adv.
All sorts of possible causes:
Incorrect network settings
No mobile reception
No credit on PAYG
URL inaccessible through mobile operator's walled garden
Which API call in particular generates the exception?
Dont forget the midlet permissions in the Jad file too. They too may cause an error.
Thanks for your answers.
Seems like it was a very stupid mistake on my part...I had'nt written the Connection code within a thread.
Small change solved the problem. Just rewrote the Connection part within run() of thread.
Related
We have a script updating Domain Shared Contacts for our tenant that runs every morning. Today, the insert requests started failing. Google is returning error code 500, which according to documentation is an 'unrecognized error'.
I'm not finding anything regarding an API outage currently going on, nor am I seeing anything relating to an API change taking effect today.
I recreated the request with curl hoping to get more info, but still just receive "500 Internal Server Error".
Anyone else seeing this? Anyone aware of an internal problem at Google, or an API change which just took effect?
Thanks for any help.
EDIT:
The issue seems to be resolved. Hopefully it has for others with this problem as well. Thanks to Google for addressing this.
Yes unfortunately this problem started yesterday see
Exception while adding contact in google.Internal server Error
I urge you to raise a Case with Google Support
I have set up LDAP Active Directory authentication for a Spring MVC application that I am configuring. I have been able to log in, and a majority of the time authentication occurs successfully. However, every so often, I will get a Connection Refused error. The timing for this seems to be sporadic and resolves each time within ten to fifteen minutes. I have done some research and have found that other have also had this problem. However, I have not been able to find a solution or a hint as to what may be causing it. If anyone could point me in the right direction on this, it would be greatly appreciated.
I was able to get an answer to this question from a coworker. He had me switch to another server and the problem seems to be resolved. He gave me the reason that the server I had been hitting was being overloaded.
I am trying to publish asp.net mvc site on remote server I am getting the error as shown in figure. Any idea
I solved it the problem was that in the designer file connection name was different then that of web.config. Once both name are same it started running fine.
Any chance you could post a larger scale of the image, the stack trace is very tricky to read.
As a guess, it looks like the exception is being raised in the database context area of code - possibly Entity Framework??
First, have a look at the Models.EvloetDatabaseContext constructor - is there anything in there that might cause the null reference exception?
You could put some Trace.WriteLine calls in that method and use a tool such as DebugView to see how many of those messages are being sent out. I use his often when debugging issues on a client's server.
I'm developing a qt browser plugin and want to implement named pipes in it. I tried the basic fortune cookie example provided with the QLocalSocket and QLocalServer in an exe and it works fine. But when i try to implement a similar thing in the browser plugin, making a page where the plugin is present listen to a name (like a server) and another tab/window which tries to connect to this. But this doesn't seem to work. When i do a client->errorString() it prints out "Unknown Error".
Any help on what I'm doing wrong?
Thanks a ton in advance
Put debug output to check the following things:
Has your client asked for a connection?
Has the server received a request to setup a connection?
Has each entity created it's QLocalSocket instance?
What does QLocalSocket::state() say on both entities?
Possible causes:
Have both of your code paths received cpu-time (seperate threads in the same process?)?
Is there a deadlock?
In my Project (ASP.NET, VB.NET), sometimes a Server Error is showing.
When this error is shown, Users cannot submit their Applications, so that they have to re-type full details and submit again.
How can I escape from these Server Errors?
I think the reason may be Memory issues. Because if the user try to submit again (after Sign Out->Sign In ) then they can submit. Daily twice or thrice Error is happening.
The word "Server" in the phrase "Server Error" refers to your ASP.NET code. You are the server!
If you are running .NET 2.0 or later, you can look into the Application event log (use the Event Viewer applet) for warnings from "ASP.NET". They will include details of what went wrong.
You need to debug your code to find out what's causing this, but the event logs will give you a starting point.
"Server Error" is just a generic message that indicates the the server code (your code) threw an exception that wasn't handled. It shows the user "server error" instead of a specific message so that no implementation details are exposed to outside users.
In other words, without debugging or looking at a log file or something, all you can tell from "Server Error" is that an Exception of any type was thrown.
Sorry, but the information you provided is not helpful in determining the issue.
I think that you'll need to provide a bit more info to get meaningful solutions.
Do you have server logs?
Can you debug through the app as the error occurs?
Does the error occur at a certain time of day, or after a certain regular action?
Does your app attempt to write to a file that may not be accessible?
is it possible that you are experiencing memory issues?
the list could go on, best to do some more investigation and if a more specific issue comes to light edit your question with the extra detail.
AFTER EDIT:
From the extra detail you've provided I wouldn't jump to memory as an issue, in signing out and back in the user is refreshing their session so everything is reset. If you are not seeing anything in your logs you'll need to look at your exception/error handling.
You just haven't provided enough info yet for us to work out the root issue, let alone suggest a solution. That's what you're seeing from all the answers here thus far. Find the event log info and there should be something there to help you, or at least something more to post here.
Try debugging the error? Server Error can be caused by various reasons.
Check for potential infinite loops.
Check for code in the constructor that might fail (especially for web services).
I think I've had cases like this which led to 'Server Error'. I'm assuming you mean the big red 'Server Error' message?
Save all your files and close your Visual Studio and now right click on Visual studio and run as administrator. It worked for me.