PR: 2054

Submitted by: Julia Lawall <julia@diku.dk>
Approved by: steve@openssl.org

Correct BIO_ctrl error handling

diff --git a/ssl/d1_both.c b/ssl/d1_both.c
index c2834e79f88754b24f5da16079552f58a263d80f..de96622f864a850c91d5600fbe166219763f39ad 100644 (file)
--- a/ssl/d1_both.c
+++ b/ssl/d1_both.c
@@ -279,7 +279,7 @@ int dtls1_do_write(SSL *s, int type)
                         * retransmit 
                         */
                        if ( BIO_ctrl(SSL_get_wbio(s),
-                               BIO_CTRL_DGRAM_MTU_EXCEEDED, 0, NULL))
+                               BIO_CTRL_DGRAM_MTU_EXCEEDED, 0, NULL) > 0 )
                                s->d1->mtu = BIO_ctrl(SSL_get_wbio(s),
                                        BIO_CTRL_DGRAM_QUERY_MTU, 0, NULL);
                        else