commit 6a2bdfaf738d6c3e562d8d246b0402aad6df1089
author Manuel Pégourié-Gonnard <mpg@elzevir.fr> Fri Sep 19 21:18:23 2014 +0200
committer Paul Bakker <p.j.bakker@polarssl.org> Tue Oct 21 16:32:28 2014 +0200
tree fb79f49974462cbbb0a36b5735fb6e2f563e8c56
parent 5d8ba53ace4d20e24c5996a8fc92d80160d1d4a4

Actually resend flights

library/ssl_tls.c

diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 9160baa..d6f8264 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -1913,14 +1913,34 @@
             return( POLARSSL_ERR_SSL_INTERNAL_ERROR );
         }
 
+        // TODO-DTLS: for now, use constant timeout = 1 sec/datagram
         len = SSL_BUFFER_LEN - ( ssl->in_hdr - ssl->in_buf );
-        ret = ssl->f_recv( ssl->p_bio, ssl->in_hdr, len );
+        if( ssl->f_recv_timeout != NULL &&
+            ssl->handshake != NULL ) /* No resend outside handshake */
+        {
+            ret = ssl->f_recv_timeout( ssl->p_bio, ssl->in_hdr, len, 1 );
+        }
+        else
+            ret = ssl->f_recv( ssl->p_bio, ssl->in_hdr, len );
 
         SSL_DEBUG_RET( 2, "ssl->f_recv", ret );
 
         if( ret == 0 )
             return( POLARSSL_ERR_SSL_CONN_EOF );
 
+        if( ret == POLARSSL_ERR_NET_TIMEOUT )
+        {
+            SSL_DEBUG_MSG( 2, ( "recv timeout" ) );
+
+            if( ( ret = ssl_resend( ssl ) ) != 0 )
+            {
+                SSL_DEBUG_RET( 1, "ssl_resend", ret );
+                return( ret );
+            }
+
+            return( POLARSSL_ERR_NET_WANT_READ );
+        }
+
         if( ret < 0 )
             return( ret );
 
@@ -2576,9 +2596,27 @@
         if( ssl->handshake != NULL &&
             recv_msg_seq != ssl->handshake->in_msg_seq )
         {
-            SSL_DEBUG_MSG( 2, ( "dropping out-of-order message: "
-                                "message_seq = %d, expected = %d",
-                                recv_msg_seq, ssl->handshake->in_msg_seq ) );
+            if( recv_msg_seq < ssl->handshake->in_flight_start_seq )
+            {
+                SSL_DEBUG_MSG( 2, ( "received message from last flight, "
+                                    "message_seq = %d, start_of_flight = %d",
+                                    recv_msg_seq,
+                                    ssl->handshake->in_flight_start_seq ) );
+
+                if( ( ret = ssl_resend( ssl ) ) != 0 )
+                {
+                    SSL_DEBUG_RET( 1, "ssl_resend", ret );
+                    return( ret );
+                }
+            }
+            else
+            {
+                SSL_DEBUG_MSG( 2, ( "dropping out-of-order message: "
+                                    "message_seq = %d, expected = %d",
+                                    recv_msg_seq,
+                                    ssl->handshake->in_msg_seq ) );
+            }
+
             return( POLARSSL_ERR_NET_WANT_READ );
         }
         /* Wait until message completion to increment in_msg_seq */