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sharptooth
sharptooth

Reputation: 170549

Why would HttpContext not contain a "Host" header?

In my MVC3 application I have a custom controller factory that has CreateController()method working as follows:

  public IController CreateController(RequestContext requestContext, string controllerName)
   {
       string host = requestContext.HttpContext.Request.Headers["Host"];
       if( !host.EndsWith( SomeHardcodedString ) ) { // FAILS HERE
           //some special action
       }
       //proceed with controller creation
   }

the problem is host is null sometimes - I see NullReferenceException for some requests and the exception stack trace points exactly at that line.

Why would null be retrieved here? How do I handle such cases?

Upvotes: 6

Views: 1818

Answers (2)

syneptody
syneptody

Reputation: 1280

To handle it, you might want to try something like:

var host = requestContext.HttpContext.Request.Url.Host;

if (host != null)
    if(!host.EndsWith("SomeHardcodedString")) 
else
   // Handle it

Upvotes: 2

Arturo Martinez
Arturo Martinez

Reputation: 2583

Use string host = requestContext.HttpContext.Request.Url.Host;

Upvotes: 7

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