Resolve FileUpload in ASP. NET cannot upload limits larger than 4M files

Asp. NET is only allowed to upload 4M of files, this is due to the security of the site, in order to prevent the site by denial of Service attacks attack.

Although it is due to the security of the site, but the program does not catch the file more than 4M exception. When debugging a program, even if you set a file more than 4M to exit, you can only look at the page timeout, powerless. Tune for a while, the Internet a search, this incredibly is the trap of Microsoft set!!

Solution:

Add the following code to the <system.web></system.web> within Web. config:

Usefullyqualifiedredirecturl= "true" minfreethreads= "8"

Minlocalrequestfreethreads= "4" apprequestqueuelimit= "enableversionheader=" "true"/>

Explain:

HttpRuntime is to configure the ASP. NET HTTP runtime settings to determine how to handle requests to an ASP.

Executiontimeout: Represents the maximum time limit allowed to execute a request, in seconds

maxRequestLength: Indicates the maximum file upload size supported by ASP. This restriction can be used to prevent denial of service attacks that result from the user passing a large number of files to the server. The specified size is in kilobytes. The default value is 4096 KB (4 MB).

useFullyQualifiedRedirectUrl: Indicates whether client redirection is fully qualified (in the "Http://server/path" format, which is required for some mobile controls), or indicates whether a relative redirect is sent to the client instead. If true, all redirects that are not fully qualified are automatically converted to the fully qualified format. False is the default option.

minFreeThreads: Specifies the minimum number of free threads that are allowed to execute new requests. An ASP. NET makes the specified number of threads free by requiring additional threads to complete their processing requests. The default value is 8.

minLocalRequestFreeThreads: Represents the minimum number of free threads that ASP. NET remains allowed to perform new local requests. The number of threads is reserved for incoming requests from the local host, in case some requests make child requests to the local host during their processing. This avoids possible deadlocks caused by recursive re-entry into the WEB server.

appRequestQueueLimit: Represents the maximum number of requests that ASP. NET will queue for the application. When there are not enough free threads to process the request, the request is queued. When the queue exceeds the limit specified in this setting, the incoming request is rejected through the "503-Server Too busy" error message.

Enableversionheader: Indicates whether the specified ASP. NET version header should be output. Microsoft Visual Studio 2005 uses this property to determine which version of ASP is currently in use. For a production environment, this property is not required and can be disabled.

Resolve FileUpload in ASP. NET cannot upload limits larger than 4M files