diff options
| author | Matt Caswell <matt@openssl.org> | 2014-12-02 11:16:35 +0000 |
|---|---|---|
| committer | Matt Caswell <matt@openssl.org> | 2014-12-03 09:24:53 +0000 |
| commit | 047f21593eebbc617a410a208ded01e65ca11028 (patch) | |
| tree | 2b1d03c021531aee8fdb10da258327662103ce74 /ssl/d1_lib.c | |
| parent | 464ce92026bd0c79186cbefa75470f39607110be (diff) | |
Only use the fallback mtu after 2 unsuccessful retransmissions if it is less
than the mtu we are already using
Reviewed-by: Tim Hudson <tjh@openssl.org>
Diffstat (limited to 'ssl/d1_lib.c')
| -rw-r--r-- | ssl/d1_lib.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/ssl/d1_lib.c b/ssl/d1_lib.c index 5b3de08d51..308afff2d4 100644 --- a/ssl/d1_lib.c +++ b/ssl/d1_lib.c @@ -475,13 +475,17 @@ void dtls1_stop_timer(SSL *s) int dtls1_check_timeout_num(SSL *s) { + unsigned int mtu; + s->d1->timeout.num_alerts++; /* Reduce MTU after 2 unsuccessful retransmissions */ if (s->d1->timeout.num_alerts > 2 && !(SSL_get_options(s) & SSL_OP_NO_QUERY_MTU)) { - s->d1->mtu = BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_GET_FALLBACK_MTU, 0, NULL); + mtu = BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_GET_FALLBACK_MTU, 0, NULL); + if(mtu < s->d1->mtu) + s->d1->mtu = mtu; } if (s->d1->timeout.num_alerts > DTLS1_TMO_ALERT_COUNT) |