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Minor documentation improvements in ssl_parse_record_header()

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Hanno Becker 2019-07-10 17:20:01 +01:00 committed by Manuel Pégourié-Gonnard
parent e04527755b
commit 6c0e53ce6f
1 changed files with 8 additions and 2 deletions
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10
library/ssl_tls.c
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@ -4825,12 +4825,17 @@ static int ssl_parse_record_header( mbedtls_ssl_context *ssl )
MBEDTLS_SSL_DEBUG_MSG( 1, ( "Datagram too small to contain record." ) );
return( MBEDTLS_ERR_SSL_INVALID_RECORD );
}
/* Records from the next epoch are considered for buffering
* (concretely: early Finished messages). */
if( rec_epoch == (unsigned) ssl->in_epoch + 1 )
{
/* Consider buffering the record. */
MBEDTLS_SSL_DEBUG_MSG( 2, ( "Consider record for buffering" ) );
return( MBEDTLS_ERR_SSL_EARLY_MESSAGE );
}
/* Records from other, non-matching epochs are silently discarded.
* (The case of same-port Client reconnects must be considered in
* the caller). */
else if( rec_epoch != ssl->in_epoch )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "record from another epoch: "
@ -4839,7 +4844,8 @@ static int ssl_parse_record_header( mbedtls_ssl_context *ssl )
return( MBEDTLS_ERR_SSL_UNEXPECTED_RECORD );
}
#if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
/* Replay detection only works for the current epoch */
/* For records from the correct epoch, check whether their
* sequence number has been seen before. */
else if( mbedtls_ssl_dtls_replay_check( ssl ) != 0 )
{
MBEDTLS_SSL_DEBUG_MSG( 1, ( "replayed record" ) );