Allow SERVER_PORT to be a string containing a port number.

rack · Feb 7, 2020 · eec2635 · eec2635
1 parent eb7de84
commit eec2635
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/lib/rack/lint.rb b/lib/rack/lint.rb
@@ -279,10 +279,10 @@ def check_env(env)
         assert("env missing required key #{header}") { env.include? header }
       }
 
-      ## The <tt>SERVER_PORT</tt> must be an integer if set.
-      assert("env[SERVER_PORT] is not an integer") do
+      ## The <tt>SERVER_PORT</tt> must be an Integer if set.
+      assert("env[SERVER_PORT] is not an Integer") do
         server_port = env["SERVER_PORT"]
-        server_port.nil? || server_port.is_a?(Integer)
+        server_port.nil? || (Integer(server_port) rescue false)
       end
 
       ## The <tt>SERVER_NAME</tt> must be a valid authority as defined by RFC7540.