How to do Basecamp-style accounts in Asp.Net Mvc?

Question

For an Asp.Net software as a service application, I want to do account based subdomains like Basecamp and the rest of the 37Signals products have. E.g. acme.myapp.com will load

Answer 1

Maarten Balliauw's blog covered one method extending RouteBase. I think I've also seen a custom route handler used for this.

Also, this StackOverflow question covered the same question, using a more simplistic approach.

I definitely recommend factoring this code out into the routing side rather than embedding the logic to get domain information in your controllers.

Answer 2

We use:

public static string GetSubDomain()
        {
            string subDomain = String.Empty;

            if (HttpContext.Current.Request.Url.HostNameType == UriHostNameType.Dns)
            {
                subDomain = Regex.Replace(HttpContext.Current.Request.Url.Host, "((.*)(\\..*){2})|(.*)", "$2");
            }

            if (subDomain.Length == 0)
            {
                subDomain = "www";
            }

            return subDomain.Trim().ToLower();
        }

Answer 3

It's not very different compared to RoR. Just get the HTTP-Request, take the Host-Value, split it (at each dot) and take the first part to get the subdomain.

string subdomain = requestContext.HttpContext.
                      Request.Headers["Host"].Split('.')[0];

Then just resolve the subdomain to the Companies account.