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allow early DTLS datagrams, but drop late ones.

This commit is contained in:
John Safranek 2012-08-28 08:55:31 -07:00
parent 98bc1f8c46
commit c9625789cd
1 changed files with 6 additions and 4 deletions
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10
src/internal.c
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@ -1544,13 +1544,15 @@ static int GetRecordHeader(CYASSL* ssl, const byte* input, word32* inOutIdx,
#ifdef CYASSL_DTLS
/* If DTLS, check the sequence number against expected. If out of
* order, drop the record. */
* order, drop the record. Allows newer records in and resets the
* expected to the next record. */
if (ssl->options.dtls) {
if ((ssl->keys.dtls_expected_peer_epoch ==
ssl->keys.dtls_peer_epoch) &&
(ssl->keys.dtls_expected_peer_sequence_number ==
ssl->keys.dtls_peer_sequence_number)) {
ssl->keys.dtls_expected_peer_sequence_number++;
(ssl->keys.dtls_peer_sequence_number >=
ssl->keys.dtls_expected_peer_sequence_number)) {
ssl->keys.dtls_expected_peer_sequence_number =
ssl->keys.dtls_peer_sequence_number + 1;
}
else {
return SEQUENCE_ERROR;