IIS 7.5 response does not contain setCookie when User-Agent = CasperJS - asp.net

Question

HTTP header sent by CasperJS contains:
...
- User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/534.34 (KHTML, like Gecko) CasperJS/1.0.2+Phantomjs/1.8.2 Safari/534.34
...
Response does not contain SetCookie value!
When I change user agent manually:
PageSettings: {
userAgent: "User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.22 (KHTML, like Gecko) Chrome/25.0.1364.97 Safari/537.22"
}
All works fine. I'm using ASP.Net MVC.
How fix It on server side?

Answer 1

This is probably because the runtime determines your browser capabilities based on the user agent header. Try to turn it off like this (or similarily) to try if it helps:
// Global.asax.cs
void Application_OnBeginRequest( object sender, EventArgs e )
{
HttpApplication app = ( HttpApplication )sender;
HttpContext ctx = app.Context;
...
if (
ctx.Request != null &&
!string.IsNullOrEmpty( ctx.Request.UserAgent ) &&
ctx.Request.UserAgent.Contains( "CasperJS" )
)
ctx.Request.Browser.Adapters.Clear();
..
}
The snippet above is not necessarily a good idea - it totally removes the rendering adapter (which may possibly not be good!) for some browsers but it should be a good starting point for something more fancy.
I hope this helps, we were able to resolve some rendering issues with the snippet and I hope it also helps with the cookie issue.

Answer 2

I found a solve here: https://stackoverflow.com/a/4816391/1010404
I put generic.browser into App_Browsers folder.
File contains:
<browsers>
<browser refID="Default">
<capabilities>
<capability name="cookies" value="true" />
</capabilities>
</browser>
</browsers>
And all work fine.