# HG changeset patch
# User jbe
# Date 1434659933 -7200
# Node ID 77d8fdd124e6276eb91e682da7ac0b8c3e7ae9d5
# Parent  f6eea95879d406e493d6a9813872b0520b71f30b
Throw error if key is not a string when accessing headers table

diff -r f6eea95879d4 -r 77d8fdd124e6 moonbridge_http.lua
--- a/moonbridge_http.lua	Thu Jun 18 22:35:52 2015 +0200
+++ b/moonbridge_http.lua	Thu Jun 18 22:38:53 2015 +0200
@@ -246,16 +246,17 @@
         -- (raw access, but case-insensitive):
         headers = setmetatable({}, {
           __index = function(self, key)
-            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
+            if type(key) ~= "string" then
+              error("Attempted to index headers table with a non-string key")
             end
+            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
         }),
         -- table mapping header field names to value-lists