fix casing of headers

in rack headers are prefixed with HTTP_, upper cased and dashes are replaced with underscores
when reading response headers and setting response headers, headers are lower cased and dashes are used

sinatra_template/sparql/client.rb

@@ -13,13 +13,13 @@ class Client < ::SPARQL::Client
       # @return [Net::HTTPResponse]
       # @see    http://www.w3.org/TR/sparql11-protocol/#query-operation
       def request(query, headers = {}, &block)
-        headers['MU_SESSION_ID'] = RequestStore.store[:mu_session_id]
-        headers['MU_CALL_ID'] = RequestStore.store[:mu_call_id]
-        headers['MU_AUTH_ALLOWED_GROUPS'] = RequestStore.store[:mu_auth_allowed_groups]
-        headers['MU_AUTH_USED_GROUPS'] = RequestStore.store[:mu_auth_used_groups]
+        headers['mu-session-id'] = RequestStore.store[:mu_session_id]
+        headers['mu-call-id'] = RequestStore.store[:mu_call_id]
+        headers['mu-auth-allowed-groups'] = RequestStore.store[:mu_auth_allowed_groups]
+        headers['mu-auth-used-groups'] = RequestStore.store[:mu_auth_used_groups]
         response = super
-        RequestStore.store[:mu_auth_allowed_groups] = response['MU_AUTH_ALLOWED_GROUPS']
-        RequestStore.store[:mu_auth_used_groups] = response['MU_AUTH_USED_GROUPS']
+        RequestStore.store[:mu_auth_allowed_groups] = response['mu-auth-allowed-groups']
+        RequestStore.store[:mu_auth_used_groups] = response['mu-auth-used=groups']
         response
       end
     end

web.rb

@@ -42,7 +42,7 @@
 # Helpers
 ###
 helpers SinatraTemplate::Helpers
-
+use RequestStore::Middleware
 
 ###
 # Hooks
@@ -61,18 +61,18 @@
       RequestStore.store[:mu_auth_allowed_groups] = request.env['HTTP_MU_AUTH_ALLOWED_GROUPS']
       RequestStore.store[:mu_auth_used_groups] = request.env['HTTP_MU_AUTH_USED_GROUPS']
     end
-  rescue e
+  rescue Exception => e
     log.error e
   end
 end
 
 after do
   auth_headers = {}
   if RequestStore.store[:mu_auth_allowed_groups]
-    auth_headers['MU_AUTH_ALLOWED_GROUPS'] = RequestStore.store[:mu_auth_allowed_groups]
+    auth_headers['mu-auth-allowed-groups'] = RequestStore.store[:mu_auth_allowed_groups]
   end
   if RequestStore.store[:mu_auth_used_groups]
-    auth_headers['MU_AUTH_USED_GROUPS'] = RequestStore.store[:mu_auth_used_groups]
+    auth_headers['mu-auth-used-groups'] = RequestStore.store[:mu_auth_used_groups]
   end
   headers auth_headers
 end