# HG changeset patch
# User jbe
# Date 1434659752 -7200
# Node ID f6eea95879d406e493d6a9813872b0520b71f30b
# Parent  b03857995d577c85723fc6607e078f324e4f1017
Check if key is a string in index metamethod of headers table

diff -r b03857995d57 -r f6eea95879d4 moonbridge_http.lua
--- a/moonbridge_http.lua	Thu Jun 18 22:27:57 2015 +0200
+++ b/moonbridge_http.lua	Thu Jun 18 22:35:52 2015 +0200
@@ -246,14 +246,16 @@
         -- (raw access, but case-insensitive):
         headers = setmetatable({}, {
           __index = function(self, key)
-            local lowerkey = string.lower(key)
-            local result = rawget(self, lowerkey)
-            if result == nil then
-              result = {}
-              self[lowerkey] = result
+            if type(key) == "string" then
+              local lowerkey = string.lower(key)
+              local result = rawget(self, lowerkey)
+              if result == nil then
+                result = {}
+                rawset(self, lowerkey, result)
+              end
+              rawset(self, key, result)
+              return result
             end
-            self[key] = result
-            return result
           end
         }),
         -- table mapping header field names to value-lists