diff --git a/res/res_rtp_asterisk.c b/res/res_rtp_asterisk.c index ed7dde01d8c9cce14bcd0112dcf9c208dab23e77..b78f6e24e82bafb6b2d564dc31b0e63b70bd6b5d 100644 --- a/res/res_rtp_asterisk.c +++ b/res/res_rtp_asterisk.c @@ -2016,8 +2016,9 @@ static int __rtp_recvfrom(struct ast_rtp_instance *instance, void *buf, size_t s #ifdef HAVE_OPENSSL_SRTP dtls_srtp_check_pending(instance, rtp, rtcp); - /* If this is an SSL packet pass it to OpenSSL for processing */ - if ((*in >= 20) && (*in <= 64)) { + /* If this is an SSL packet pass it to OpenSSL for processing. RFC section for first byte value: + * https://tools.ietf.org/html/rfc5764#section-5.1.2 */ + if ((*in >= 20) && (*in <= 63)) { struct dtls_details *dtls = !rtcp ? &rtp->dtls : &rtp->rtcp->dtls; int res = 0;