Expand comment in tls_process_hello_req()

Following review feedback.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2259)

diff --git a/ssl/statem/statem_clnt.c b/ssl/statem/statem_clnt.c
index cfc104726757e5a1cb0a449b3221c1a241afb86c..9ce4ff6ce5562edf476aa49e882c90263408a2f6 100644 (file)
--- a/ssl/statem/statem_clnt.c
+++ b/ssl/statem/statem_clnt.c
@@ -3226,10 +3226,11 @@ MSG_PROCESS_RETURN tls_process_hello_req(SSL *s, PACKET *pkt)
     }
 
     /*
-     * This is a historical discrepancy maintained for compatibility
-     * reasons. If a TLS client receives a HelloRequest it will attempt
-     * an abbreviated handshake. However if a DTLS client receives a
-     * HelloRequest it will do a full handshake.
+     * This is a historical discrepancy (not in the RFC) maintained for
+     * compatibility reasons. If a TLS client receives a HelloRequest it will
+     * attempt an abbreviated handshake. However if a DTLS client receives a
+     * HelloRequest it will do a full handshake. Either behaviour is reasonable
+     * but doing one for TLS and another for DTLS is odd.
      */
     if (SSL_IS_DTLS(s))
         SSL_renegotiate(s);