Avoid checking choked pipe if no extension has more data to write.

diff --git a/lib/parsers.c b/lib/parsers.c
index 0f4c2c7..a61c0e2 100644 (file)
--- a/lib/parsers.c
+++ b/lib/parsers.c
@@ -1560,6 +1560,11 @@ lws_issue_raw_ext_access(struct libwebsocket *wsi,
 
                debug("written %d bytes to client\n", eff_buf.token_len);
 
+               /* no extension has more to spill */
+
+               if (!ret)
+                       break;
+
                /* we used up what we had */
 
                eff_buf.token = NULL;