Make DTLS always act as if read_ahead is set. The actual value of read_ahead

is ignored for DTLS.

RT#3657

Reviewed-by: Andy Polyakov <appro@openssl.org>
(cherry picked from commit 8dd4ad0ff5d1d07ec4b6dd5d5104131269a472aa)

diff --git a/ssl/s3_pkt.c b/ssl/s3_pkt.c
index 5644dd8f26b751c2716373c3668293c71cbf5b14..d422abfda0e61daaf87d92a1f820a207e3bbb6f3 100644 (file)
--- a/ssl/s3_pkt.c
+++ b/ssl/s3_pkt.c
@@ -217,7 +217,8 @@ int ssl3_read_n(SSL *s, int n, int max, int extend)
         return -1;
     }
 
-    if (!s->read_ahead)
+    /* We always act like read_ahead is set for DTLS */
+    if (!s->read_ahead && !SSL_IS_DTLS(s))
         /* ignore max parameter */
         max = n;
     else {