Sandstorm should do sandstorm-www check, even if hostname matches WILDCARD_HOST pattern

[paulproteus]

In a conversation with Duane Johnson, we discovered that with current versions of Sandstorm, using WILDCARD_HOST=*.example.com means that if you have a blog at blog.example.com, Sandstorm can't tell if blog.example.com is a session subdomain, or if it's a personal publishing domain. It guesses it's a session subdomain, and then refuses to serve the app instance's static content on that domain.

One thing we could do is change the default WILDCARD_HOST to avoid this problem. That wouldn't help existing users, though.

A different thing we can do is to fix shell/server/pre-meteor.js so that if the inbound request doesn't match an active session, then we try the DNS lookup of sandstorm-www per https://github.com/sandstorm-io/sandstorm/wiki/Publishing-to-the-user%27s-domain

[canadaduane]

Thanks for your help on this! I'm pretty excited to have a sandstorm blog working :)

[paulproteus]

@canadaduane , thanks for running into this bug and for saying so. Because you spoke up on the mailing list a week ago, you brought this to our attention; without that, it might have taken months longer to discover this.

I'm very happy the Sandstorm software is able to provide you with a blog! I hope you'll continue to be vocal in the community. (-: