diff options
author | Matt Caswell <matt@openssl.org> | 2018-05-03 16:00:05 +0100 |
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committer | Matt Caswell <matt@openssl.org> | 2018-05-11 13:54:56 +0100 |
commit | eb49905e605241dd1369d54df264976f8ea7f823 (patch) | |
tree | d89c6d4a86ce903304a9f28250f0996632744a6d /ssl/record/rec_layer_d1.c | |
parent | 960e7bfb32af0ff3586ae2b4953d1228fa43ea16 (diff) |
Only auto-retry for DTLS if configured to do so
Otherwise we may end up in a hang when using blocking sockets
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6196)
Diffstat (limited to 'ssl/record/rec_layer_d1.c')
-rw-r--r-- | ssl/record/rec_layer_d1.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/ssl/record/rec_layer_d1.c b/ssl/record/rec_layer_d1.c index c753a54a22..083dac4339 100644 --- a/ssl/record/rec_layer_d1.c +++ b/ssl/record/rec_layer_d1.c @@ -849,6 +849,18 @@ int dtls1_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf, dtls1_retransmit_buffered_messages(s); SSL3_RECORD_set_length(rr, 0); + if (!(s->mode & SSL_MODE_AUTO_RETRY)) { + if (SSL3_BUFFER_get_left(&s->rlayer.rbuf) == 0) { + /* no read-ahead left? */ + BIO *bio; + + s->rwstate = SSL_READING; + bio = SSL_get_rbio(s); + BIO_clear_retry_flags(bio); + BIO_set_retry_read(bio); + return -1; + } + } goto start; } |