Fixes to bring back the the "Expect: 100-continue" functionality. If the

header is used, we must wait for a 100-code (or timeout), before we send the
data. The timeout is merely 1000 ms at this point. We may have reason to set
a longer timeout in the future.

lib/http.c

@@ -232,7 +232,7 @@ CURLcode add_buffer_send(send_buffer *in,
       
       return CURLE_OK;
     }
-
+    http->sending = HTTPSEND_BODY;
     /* the full buffer was sent, clean up and return */
   }
   if(in->buffer)