- Introducing curl_easy_send() and curl_easy_recv(). They can be used to send

and receive data over a connection previously setup with curl_easy_perform()
  and its CURLOPT_CONNECT_ONLY option. The sendrecv.c example was added to
  show how they can be used.

lib/strerror.c

@@ -261,6 +261,9 @@ curl_easy_strerror(CURLcode error)
   case CURLE_SSH:
     return "Error in the SSH layer";
 
+  case CURLE_AGAIN:
+    return "Socket not ready for send/recv";
+
     /* error codes not used by current libcurl */
   case CURLE_OBSOLETE4:
   case CURLE_OBSOLETE10: