I'm working on a web page that calls a REST webservice via ajax to get and insert data.
The problem is that we need to send a base64 image in a JSON. You know, the base64 image is the imaged converted to that large text: base64/fjhd7879djkdadys7d9adsdkjasjdshk...
When we try with a 1 KB image, it works.
But with a bigger file(55kb), it doesn't.
So I assume it has something to do with the maxRequest, but the error says that is No 'Access-Control-Allow-Origin'. But we havent fount any way to configure it. Please help.
By default browsers block json requests from other domains other than the page unless the json request has the Access-Control-Allow-Origin header, so you'll need to add that header to your json requests on that service or use the same domain for both.
More info here: https://developer.mozilla.org/en-US/docs/HTTP/Access_control_CORS
You can try setting the maxJsonLength to it's maximum value in the web.config file.
<system.web.extensions>
<scripting>
<webServices>
<jsonSerialization maxJsonLength="2147483647"/>
</webServices>
</scripting>
</system.web.extensions>
I know this is an old post, but for anyone who still might be having this problem, I solved it by adding two settings to Web.config as described here: https://west-wind.com/webconnection/docs/_4lp0zgm9d.htm
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="2147483647"></requestLimits>
</requestFiltering>
</security>
<!--snip-->
</system.webServer>
and
<system.web>
<httpRuntime maxRequestLength="2147483647" />
<!--snip-->
</system.web>
Related
I am trying to upload mp4 format file to web api from rest sharp.But every time it gives me Maximum file size exceeded exception.I Put
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="1073741824" />
</requestFiltering>
</security>
this code in my web api application web config file but no result.
I am calling my web api from other application in that I use Nuget RestShap to call web api.Please help me.
Code to call web api.
var request = new RestRequest("Uploads", Method.POST);
request.AddFile("filename", Server.MapPath("/Images/videoplayback.mp4"), "multipart/form-data");
request.AddQueryParameter("participantsId", "2");
request.AddQueryParameter("taskId", "77");
request.AddQueryParameter("EnteredAnswerOptionId", "235");
request.AddQueryParameter("lat", "12.15");
request.AddQueryParameter("lon", "12.56");
request.AlwaysMultipartFormData = true;
IRestResponse response = createClient().Execute(request);
Also add this entry or add the attributes if you already have this entry in your web.config. The executionTimeout is in seconds and the maxRequestLength is in KB. Example is 2 hours and 1GB
<system.web>
<httpRuntime executionTimeout="7200" maxRequestLength="1048576" />
</system.web>
I think you should have to refer these links,you may get required stuff here...
http://www.strathweb.com/2012/09/dealing-with-large-files-in-asp-net-web-api/
https://social.msdn.microsoft.com/Forums/sqlserver/en-US/b5dbab38-9741-45ca-a791-1847b2935bb0/azure-api-app-rest-web-api-upload-limit?forum=AzureAPIApps
Does anyone know if there is a way of catching this error?
Essentially I'm trying to implement some functionality to allow a user to upload a file from a webpage to a webapi controller.
This works fine, but if the file size exceeds the maximum size specified in the web.config the server returns a 404 error.
I want to be able to intercept this and return a 500 error along with message which can be consumed by the client.
I can't work out where to do this in WebApi as the Application_Error method I've implemented in Global.asax is never hit and it seems like IIS is not passing this through to the WebApi application.
Try to set IIS to accept 2GB requests(in Bytes).
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="2147483648" /> // 2GB
</requestFiltering>
</security>
</system.webServer>
And set reasonable request size for ASP.NET app(in kiloBytes).
<system.web>
<httpRuntime maxRequestLength="4096" /> // 4MB (default)
</system.web>
Now IIS should let requests less than 2GB pass to your app, but app will jump into Application_Error reaching 4MB request size. There you can manage what you want to return.
Anyway, requests greater than 2GB will always return 404.13 by IIS.
Related links:
Dealing with large files in ASP.NET Web API
How it looks like on my server:
<system.web>
<httpRuntime targetFramework="4.6.1" maxRequestLength="16240" />
</system.web>
Perhaps I'm missing something by not wording my Google searches correctly, but I've run into an issue with IIS 8.5 and caching. I have a server set up that by all standards should be serving only static files. Obviously, when a file is changed, the new file should be served up. The issue is that even after a server restart, setting files to immediately expire, didsabling caching, disabling compression, and turning off any other caching feature, the old file with its old timestamp is still being served.
I have the following settings:
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<security>
<requestFiltering allowHighBitCharacters="false">
<verbs allowUnlisted="false">
<add verb="GET" allowed="true" />
</verbs>
</requestFiltering>
</security>
<caching enabled="false" enableKernelCache="false" />
<urlCompression doStaticCompression="false" />
</system.webServer>
<location path="" overrideMode="Deny">
<system.webServer>
</system.webServer>
</location>
<location path="" overrideMode="Allow">
<system.webServer>
</system.webServer>
</location>
</configuration>
The folder in which the files are located has read only permissions. The interesing fact is that if I go to mydomain.com, the old version shows up, but going to newmydomain.com loads the new file (even though they both point to the same IP address).
An HTTP client can use the old version of a file if the cache control header(s) sent with the response indicated that the content would not change for a given period of time. It does not matter if the content changed on the server or not.
For example, if the file is sent with the header:
Cache-Control: Max-age=86400
then for 24 hours the client can use the file without contacting the server. If the file changes on the server, the client won't know that the file changed because it won't even make a request to the server.
You can add the must-revalidate cache control attribute to force the client to always make a server request.
As noted in my reply to storsoc, our issue was that our load balancer, an F5 server, was trying offload as much as possible from our web servers by caching our site. See K13255: Displaying and deleting HTTP cache entries from the command line (11.x and later) for how to forcefully remove cached entries.
I am developing an MVC 4 application.I am sending ajax post request to a controller action.When the post data is more than 4MB the requist to action is failing.What is the solution for this?
You need to change two configuration parameters (value is in KB)
In Web.Config
<configuration>
<system.web>
<httpRuntime maxRequestLength="8192" />
</system.web>
</configuration>
In IIS
Update your 'Maximum allowed content length' setting, as described here : http://ajaxuploader.com/large-file-upload-iis-asp-net.htm
You could try extending the size of one of these properties..
<system.web>
<httpRuntime maxRequestLength="x" />
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="x" ></requestLimits>
Set, x to the size limit you want. Read this post for help.
I currently have a ASP.Net MVC web application that needs to upload large files using ajax. I am currently using this jQuery plugin - http://valums.com/ajax-upload/. I have also used this plugin - http://jquery.malsup.com but get the same result.
The issue that I am having for large file is that the iframe that gets generated to in order for the request to be asynchronous is not loading in time.
It always seems to point to this code:
var doc = iframe.contentDocument ? iframe.contentDocument : iframe.contentWindow.document, response;
For smaller files the script works great but for larger files the iframe nevers seems to get initialized properly.
This has been driving me crazy. Can someone please HELP.
thanks in advance
You might need to increase the maximum allowed request size on the server as well as the execution timeout of the request using the <httpRuntime> section in your web.config
<system.web>
<httpRuntime
maxRequestLength="size in kbytes"
executionTimeout="seconds"
/>
...
</system.web>
And if you are deploying your application in IIS 7.0+ you might also need to increase the maximum allowed request size using the <requestLimits> node of the <system.webServer> section:
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="size in bytes" />
</requestFiltering>
</security>
...
</system.webServer>