optimize: validate the connection header before transfering to lower.

ledgetech · May 28, 2024 · ee75be9 · ee75be9
1 parent 1833103
commit ee75be9
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/lib/resty/http.lua b/lib/resty/http.lua
@@ -794,8 +794,9 @@ function _M.read_response(self, params)
     end
 
     -- keepalive is true by default. Determine if this is correct or not.
-    local ok, connection = pcall(str_lower, res_headers["Connection"])
-    if ok then
+    local connection = res_headers["Connection"]
+    if connection ~= nil then
+        connection = str_lower(connection)
         if (version == 1.1 and str_find(connection, "close", 1, true)) or
            (version == 1.0 and not str_find(connection, "keep-alive", 1, true)) then
             self.keepalive = false