Periodically some users get this error (Invalid JSON response from Server - ERROR), maybe who knows how to solve it?
<vaadin.version>21.0.1</vaadin.version>
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I have an assumption that it may be a network problem
Related
We have a java application that connects to ExactOnline for performing the operations.
The connection works fine for almost 9days and then it will start complaining about the below exception:
"Request from start.exactonline.nl returned an error (response code: 400, response: { "error":"invalid_grant","error_description":"Token is not allowed, because of invalid or empty chainId"
After encountering this error we have to force re-authorize the application by the user to get the new accessToken.
Now I am getting the below error as well:
"Request to token endpoint https://start.exactonline.nl/api/oauth2/token"
Any help would be appreciated.
The error message it's background and the solutions are explained at https://forums.invantive.com/t/exact-online-error-token-is-not-allowed-because-of-invalid-or-empty-chainid-on-exact-online/2226
When I was trying to save the template, I can't able to save the template and also I didn't get any error message.
But in Chrome console I can able to see the following message "404 not found umbraco/RestServices/SaveFile/SaveTemplate".
In App_Data I was getting the following error,
ERROR Umbraco.Web.Scheduling.ScheduledPublishing - [Thread 5] An error occurred with the scheduled publishing System.Net.WebException: The underlying connection was closed: The connection was closed unexpectedly. at System.Net.WebClient.UploadDataInternal(Uri address, String method, Byte[] data, WebRequest& request) at System.Net.WebClient.UploadString(Uri address, String method, String data) at System.Net.WebClient.UploadString(String address, String data) at Umbraco.Web.Scheduling.ScheduledPublishing.Run()
Possibly a permissions issue? Check that the identity the website is running under has permissions to read/write/modify the views folder.
Several people get this error for different reasons. None of the answers I've found have solved my problem.
I use Timberjack to log my Alamofire requests.
All my GET requests work fine and I receive data in JSON.
My POSTs on the other hand works around 1 out 10 times every time if the POST includes a JSON body.
The server does not specify any Keep-Alive header.
Deployment target is iOS 9.0
This is my shared Manager with Timberjack:
class HTTPManager: Alamofire.Manager{
static let sharedManager: HTTPManager = {
let configuration = Timberjack.defaultSessionConfiguration()
let manager = HTTPManager(configuration: configuration)
return manager
}()
}
Defining the request:
let parameters: [String: AnyObject] = ["status":status]
request = HTTPManager.sharedManager.request(.POST, "\(baseURL)\(uri)", parameters: parameters, encoding: .JSON).validate()
Sending the request:
request!.responseJSON(queue: queue, options: .AllowFragments, completionHandler: { (response) in
//Handling the response
})
Most of the time the server receives an empty JSON body. But sometimes it does work and the body is received and the server responds with an OK. When it doesn't work I receive the error:
Error: The network connection was lost.
FAILURE: Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost."
UserInfo={NSUnderlyingError=0x12fa47cb0 {Error Domain=kCFErrorDomainCFNetwork Code=-1005 "The network connection was lost."
If someone can explain what's happening here I would be forever grateful :)
EDIT 1
We let the server respond every call with "Connection": "close" which did nothing to help the problem. The app always sends "Connection": "keep-alive" by default and it cannot be changed. Could this be the problem? That the app thinks the connection is open even though it's closed by the server? But even though you wait a few minutes it seems as though the POST call only works at random.
EDIT 2
Even when I wait 30 seconds between GET(s) and/or POST(s). GET always works. POST works at random (rarely). I get the -1005 error on most POSTs. Even though I get the network connection was lost error the server still receive my request but the JSON body is missing.
EDIT 3 - Ugly solution
In my response I check for the error code -1005, when I receive this error I just recreate the request and try again. This results in sending around 2-4 POST requests to the server where one POST works and the rest have empty JSON bodies.
Restart simulator or kill your app by throwing out from tasks.
Or check more solutions to this error code:
NSURLErrorDomain Code -1005 The network connection was lost
If you create a web service which receives an processes some data like XML/JSON and the parsing of the data fails because it's incorrect, what do you do?
Send a HTTP 400 error code: After all it was the client who messed up the data (XML/JSON)
Send a HTTP 500 error code: It's the server who wasn't able to complete its task
If data in the request is malformed, then you'll want to return a 400 level error. Generally 500-level errors mean that something is wrong on the server that has nothing to do with the client or the client's request.
422 code.
422 Unprocessable Entity
The 422 (Unprocessable Entity) status code means the server
understands the content type of the request entity (hence a
415(Unsupported Media Type) status code is inappropriate), and the
syntax of the request entity is correct (thus a 400 (Bad Request)
status code is inappropriate) but was unable to process the contained
instructions. For example, this error condition may occur if an XML
request body contains well-formed (i.e., syntactically correct), but
semantically erroneous, XML instructions
https://www.rfc-editor.org/rfc/rfc4918#section-11
I am stuck with a very unusual issue. I am trying to call a webservice request from the server (actully an ajax 2 step request from the client side) for which i am getting an xml formatted response which i am parsing using a treeview. The issue is..its working well in development mode on local server but showing error in production with the same codes. When I initiate a request I get a response for the first step in string format but showing error "error loading xmlDoc: xmlDoc is undefined" for the second request which suppose to be initiated directly after the first response.
codes are available here:
https://github.com/domthu/microaquadt/blob/master/app/views/oligo_sequences/edit.html.erb
error is somewhere on the function starting from line 195.
Any help or suggestion would be much appreciated...!!!!