HTTP Error 400 - Bad Request when uploading large file using AJAX - asp.net

Question

I am getting bad request from ASP.Net website on submitting the large file 2GB using AJAX.
My HTTP runtime setting
<httpRuntime maxRequestLength="2147483647" executionTimeout="3600"/>
Please help.
Web.Config
`
<?xml version="1.0"?>
<configuration>
<configSections>
<section name="microsoft.web.services3" type="Microsoft.Web.Services3.Configuration.WebServicesConfiguration, Microsoft.Web.Services3, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
</configSections>
<connectionStrings>
<remove name="LocalSqlServer"/>
<add name="LocalSqlServer" connectionString="" providerName="System.Data.SqlClient"/>
<add name="psDevDataConnectionString1" connectionString="" providerName="System.Data.SqlClient"/>
</connectionStrings>
<system.web.extensions>
<scripting>
<webServices>
<jsonSerialization maxJsonLength="50000000" />
</webServices>
</scripting>
</system.web.extensions>
<system.web>
<authentication mode="Forms"/>
<compilation debug="true" targetFramework="4.5"/>
<httpRuntime maxRequestLength="2147483647" executionTimeout="3600"/>
<membership defaultProvider="xplProvider">
<providers>
<add name="xplProvider" type="System.Web.Security.SqlMembershipProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" connectionStringName="LocalSqlServer" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" applicationName="/" requiresUniqueEmail="true" passwordFormat="Hashed" maxInvalidPasswordAttempts="10" minRequiredPasswordLength="4" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10" passwordStrengthRegularExpression=""/>
</providers>
</membership>
<webServices>
<protocols>
<add name="HttpGet"/>
<add name="HttpPost"/>
</protocols>
</webServices>
<customErrors mode="RemoteOnly" defaultRedirect="~/sysError.aspx">
<error statusCode="404" redirect="~/infoCollector.aspx"/>
</customErrors>
<pages controlRenderingCompatibilityVersion="4.0" clientIDMode="Static"/>
</system.web>
<system.webServer>
<handlers>
<add name="DocImage" verb="GET,POST" path="DocImage.axd" type="DotnetDaddy.DocumentViewer.DocImageHandler, DocumentViewer"/>
<add name="pngs" verb="*" path="ClientPortals/images/*" type="Project.UserInterface.ClientPortals.image" preCondition="managedHandler"/>
</handlers>
<modules>
<add name="UploadModule" type="RTE.UploadModule,RichTextEditor"/>
<add name="CuteEditor.UploadModule" type="CuteEditor.UploadModule,CuteEditor"/>
</modules>
<httpErrors errorMode="Custom" defaultResponseMode="ExecuteURL">
<remove statusCode="404"/>
<error statusCode="404" path="/scenter.aspx" responseMode="ExecuteURL"/>
</httpErrors>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="4294967296"/>
</requestFiltering>
</security>
</system.webServer>
<appSettings>
<add key="PageInspector:ServerCodeMappingSupport" value="Disabled"/>
</appSettings>
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="ServiceSoap">
<security mode="Transport"/>
</binding>
<binding name="ServiceSoap1"/>
<binding name="sms2SOAPbasicHttpBinding"/>
<binding name="sms2SOAPbasicHttpsBinding">
<security mode="Transport"/>
</binding>
</basicHttpBinding>
<wsHttpBinding>
<binding name="sms2wsHttpBinding">
<security mode="None"/>
</binding>
<binding name="sms2wsHttpBindingSecure">
<security mode="Transport">
<transport clientCredentialType="None"/>
</security>
</binding>
</wsHttpBinding>
</bindings>
<client>
<endpoint address="https://api.authorize.net/soap/v1/Service.asmx" binding="basicHttpBinding" bindingConfiguration="ServiceSoap" contract="ArbApiSoap.ServiceSoap" name="ServiceSoap"/>
<endpoint address="http://sms2.cdyne.com/sms.svc/Soap" binding="basicHttpBinding" bindingConfiguration="sms2SOAPbasicHttpBinding" contract="cdyneSMS.Isms" name="sms2SOAPbasicHttpBinding"/>
<endpoint address="https://sms2.cdyne.com/sms.svc/SecureSoap" binding="basicHttpBinding" bindingConfiguration="sms2SOAPbasicHttpsBinding" contract="cdyneSMS.Isms" name="sms2SOAPbasicHttpsBinding"/>
<endpoint address="http://sms2.cdyne.com/sms.svc/WS" binding="wsHttpBinding" bindingConfiguration="sms2wsHttpBinding" contract="cdyneSMS.Isms" name="sms2wsHttpBinding"/>
<endpoint address="https://sms2.cdyne.com/sms.svc/WS" binding="wsHttpBinding" bindingConfiguration="sms2wsHttpBindingSecure" contract="cdyneSMS.Isms" name="sms2wsHttpBindingSecure"/>
</client>
</system.serviceModel>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral"/>
<bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0"/>
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="AWSSDK" publicKeyToken="9f476d3089b52be3" culture="neutral"/>
<bindingRedirect oldVersion="0.0.0.0-2.3.55.0" newVersion="2.3.55.0"/>
</dependentAssembly>
</assemblyBinding>
</runtime>
<microsoft.web.services3>
<messaging>
<executionTimeoutInSeconds value="300" />
<maxMessageLength value="524288000" />
</messaging>
</microsoft.web.services3>
</configuration>
`

Answer 1

maxRequestLength is in Kilobyte not byte so 2147483647 Kilobytes is about 2000 GB that's a lot. 2GB = 2097152 KB. Try to change it to 2097152
On the other hand, maxAllowedContentLength is in bytes.
It is recommended to place both those values in web.config.
The maxRequestLength indicates the maximum file upload size supported by ASP.NET, the maxAllowedContentLength specifies the maximum length of content in a request supported by IIS. Hence, we need to set both maxRequestLength and maxAllowedContentLength values to upload large files.
<system.web>
<httpRuntime maxRequestLength="2097152" executionTimeout="3600"/>
</system.web>
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="2147483648" />
</requestFiltering>
</security>
</system.webServer>