set server_name and server_port based on routed request. closes postrank-labs#13.

Author: igrigorik

lib/goliath/request.rb

@@ -51,6 +51,12 @@ def parse_header(h, parser)
         @env[name] = @env.delete("HTTP_#{name}") if @env["HTTP_#{name}"]
       end
 
+      if @env['HTTP_HOST']
+        name, port = @env['HTTP_HOST'].split(':')
+        @env[SERVER_NAME] = name if name
+        @env[SERVER_PORT] = port if port
+      end
+
       @env[REQUEST_METHOD]  = parser.http_method
       @env[REQUEST_URI]     = parser.request_url
       @env[QUERY_STRING]    = parser.query_string

spec/unit/request_spec.rb

@@ -66,5 +66,13 @@
       @r.parse_header({'Content-Length' => 42}, parser)
       @r.env['CONTENT_LENGTH'].should == 42
     end
+
+    it 'sets server_name and server_port correctly' do
+      parser = mock('parser').as_null_object
+
+      @r.parse_header({'Host' => 'myhost.com:3000'}, parser)
+      @r.env['SERVER_NAME'].should == 'myhost.com'
+      @r.env['SERVER_PORT'].should == '3000'
+    end
   end
 end