Jeff pointed out this flaw in the example

diff --git a/docs/examples/multi-double.c b/docs/examples/multi-double.c
index 2b92d55f5c7f09b340a2f84ced1c572ea14d4c2f..51b4ed37011cf5b96546461e6fe15aa635cd11be 100644 (file)
--- a/docs/examples/multi-double.c
+++ b/docs/examples/multi-double.c
@@ -80,7 +80,8 @@ int main(int argc, char **argv)
     case 0:
     default:
       /* timeout or readable/writable sockets */
-      curl_multi_perform(multi_handle, &still_running);
+      while(CURLM_CALL_MULTI_PERFORM ==
+            curl_multi_perform(multi_handle, &still_running));
       break;
     }
   }