I'm getting an inconsistent preflight HTTP Options request from my single page app. This only happens randomly sometimes and the only way I ameliorate the issue is by pressing F5 and things are good for a while until I kind of go "idle" for a little bit.
When it happens my Chrome Network Tab looks like this:
When my
https://webui.myapp.com (AngularJS 1.1.5)
https://api.myapp.com (ASP.NET Web Api .NET v4.5 on IIS 7)
My infrastructure breakdown
- AngularJS Application
- ASP.NET Web Api
- Visual Studio 2012
- IIS 7.5
- Windows 7
I've read a few articles and my web.config's system.webServer looks like this:
<system.webServer>
<validation validateIntegratedModeConfiguration="false" />
<modules runAllManagedModulesForAllRequests="false">
<remove name="WebDAVModule" />
</modules>
<handlers>
<remove name="WebDAV" />
<remove name="OPTIONSVerbHandler"/>
<remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" />
<remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" />
<remove name="ExtensionlessUrlHandler-Integrated-4.0" />
<add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0" />
<add name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0" />
<add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
</handlers>
<httpProtocol>
<customHeaders>
<add name="Access-Control-Max-Age" value="1728000"/>
</customHeaders>
</httpProtocol>
</system.webServer>
