Fix. cURLv3 info_read return correct object.

Author: moteus

src/lua/cURL/impl/cURL.lua

@@ -556,14 +556,19 @@ function Multi:remove_handle(e)
 end
 
 function Multi:info_read(...)
-  local h, ok, err = self:handle():info_read(...)
-  if not h then return nil, ok end
-  if h == 0 then return h end
-
-  if ... and self._easy[h] then
-    self._easy[h], self._easy.n = nil, self._easy.n - 1
+  while true do
+    local h, ok, err = self:handle():info_read(...)
+    if not h then return nil, ok end
+    if h == 0 then return h end
+
+    local e = self._easy[h]
+    if e then
+      if ... then
+        self._easy[h], self._easy.n = nil, self._easy.n - 1
+      end
+      return e, ok, err
+    end
   end
-  return h, ok, err
 end
 
 end

test/test_curl.lua

@@ -93,6 +93,20 @@ function test_add_handle()
   assert_nil(c)
 end
 
+function test_info_read()
+  local url = 'http://httpbin.org/get?key=1'
+  c = assert(curl.easy{url=url, writefunction=function() end})
+  assert_equal(m, m:add_handle(c))
+
+  while m:perform() > 0 do m:wait() end
+
+  local h, ok, err = m:info_read()
+  assert_equal(c, h)
+
+  local h, ok, err = m:info_read()
+  assert_equal(0, h)
+end
+
 end
 
 local _ENV = TEST_CASE'form'           if ENABLE then