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Fix: discard CRYPTO frames from lower levels after connection promotion

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This commit is contained in:
Dmitri Tikhonov 2020-11-17 11:08:19 -05:00
parent 36d0fee2c1
commit 4c9d8eb069
1 changed files with 12 additions and 1 deletions
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13
src/liblsquic/lsquic_full_conn_ietf.c
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@ -4702,6 +4702,7 @@ process_crypto_frame_server (struct ietf_full_conn *conn,
struct lsquic_packet_in *packet_in, const unsigned char *p, size_t len) struct lsquic_packet_in *packet_in, const unsigned char *p, size_t len)
{ {
struct stream_frame stream_frame; struct stream_frame stream_frame;
enum enc_level enc_level;
int parsed_len; int parsed_len;
parsed_len = conn->ifc_conn.cn_pf->pf_parse_crypto_frame(p, len, parsed_len = conn->ifc_conn.cn_pf->pf_parse_crypto_frame(p, len,
@ -4709,9 +4710,19 @@ process_crypto_frame_server (struct ietf_full_conn *conn,
if (parsed_len < 0) if (parsed_len < 0)
return 0; return 0;
enc_level = lsquic_packet_in_enc_level(packet_in);
EV_LOG_CRYPTO_FRAME_IN(LSQUIC_LOG_CONN_ID, &stream_frame, enc_level);
LSQ_DEBUG("Got CRYPTO frame for enc level #%u", enc_level);
if (!(conn->ifc_flags & IFC_PROC_CRYPTO)) if (!(conn->ifc_flags & IFC_PROC_CRYPTO))
{ {
LSQ_DEBUG("discard %d-byte CRYPTO frame", parsed_len); LSQ_DEBUG("discard %d-byte CRYPTO frame: handshake has been confirmed",
parsed_len);
return (unsigned) parsed_len;
}
if (enc_level < ENC_LEV_INIT)
{ /* Must be dup */
LSQ_DEBUG("discard %d-byte CRYPTO frame on level %s", parsed_len,
lsquic_enclev2str[enc_level]);
return (unsigned) parsed_len; return (unsigned) parsed_len;
} }