diff --git a/src/modules/module-rtp-session.c b/src/modules/module-rtp-session.c
index 5103eac80..ba4e5a54c 100644
--- a/src/modules/module-rtp-session.c
+++ b/src/modules/module-rtp-session.c
@@ -527,6 +527,34 @@ static void recv_state_changed(void *data, bool started, const char *error)
 	}
 }
 
+static void recv_send_feedback(void *data, uint32_t seqnum)
+{
+	struct session *sess = data;
+	struct impl *impl = sess->impl;
+	struct iovec iov[1];
+	struct msghdr msg;
+	struct rtp_apple_midi_rs hdr;
+
+	if (!sess->ctrl_ready || !sess->receiving)
+		return;
+
+	spa_zero(hdr);
+	hdr.cmd = htonl(APPLE_MIDI_CMD_RS);
+	hdr.ssrc = htonl(sess->ssrc);
+	hdr.seqnum = htonl(seqnum);
+
+	iov[0].iov_base = &hdr;
+	iov[0].iov_len = sizeof(hdr);
+
+	spa_zero(msg);
+	msg.msg_name = &sess->ctrl_addr;
+	msg.msg_namelen = sess->ctrl_len;
+	msg.msg_iov = iov;
+	msg.msg_iovlen = 1;
+
+	send_packet(impl->ctrl_source->fd, &msg);
+}
+
 static const struct rtp_stream_events send_stream_events = {
 	RTP_VERSION_STREAM_EVENTS,
 	.destroy = send_destroy,
@@ -538,6 +566,7 @@ static const struct rtp_stream_events recv_stream_events = {
 	RTP_VERSION_STREAM_EVENTS,
 	.destroy = recv_destroy,
 	.state_changed = recv_state_changed,
+	.send_feedback = recv_send_feedback,
 };
 
 static void free_session(struct session *sess)
@@ -784,6 +813,31 @@ static void parse_apple_midi_cmd_ok(struct impl *impl, bool ctrl, uint8_t *buffe
 	}
 }
 
+static void parse_apple_midi_cmd_no(struct impl *impl, bool ctrl, uint8_t *buffer,
+		ssize_t len, struct sockaddr_storage *sa, socklen_t salen)
+{
+	struct rtp_apple_midi *hdr = (struct rtp_apple_midi*)buffer;
+	uint32_t initiator = ntohl(hdr->initiator);
+	struct session *sess;
+
+	sess = find_session_by_initiator(impl, initiator, ctrl);
+	if (sess == NULL || !sess->we_initiated) {
+		pw_log_warn("received NO from nonexisting session %u", initiator);
+		return;
+	}
+
+	if (ctrl) {
+		pw_log_info("got ctrl NO %08x %u", initiator, sess->data_ready);
+		sess->ctrl_ready = false;
+	} else {
+		pw_log_info("got data NO %08x %u, session canceled", initiator,
+				sess->ctrl_ready);
+		sess->data_ready = false;
+		if (!sess->ctrl_ready)
+			session_update_state(sess, SESSION_STATE_INIT);
+	}
+}
+
 static void parse_apple_midi_cmd_ck(struct impl *impl, bool ctrl, uint8_t *buffer,
 		ssize_t len, struct sockaddr_storage *sa, socklen_t salen)
 {
@@ -878,6 +932,24 @@ static void parse_apple_midi_cmd_by(struct impl *impl, bool ctrl, uint8_t *buffe
 	}
 }
 
+static void parse_apple_midi_cmd_rs(struct impl *impl, bool ctrl, uint8_t *buffer,
+		ssize_t len, struct sockaddr_storage *sa, socklen_t salen)
+{
+	struct rtp_apple_midi_rs *hdr = (struct rtp_apple_midi_rs*)buffer;
+	struct session *sess;
+	uint32_t ssrc, seqnum;
+
+	ssrc = ntohl(hdr->ssrc);
+	sess = find_session_by_ssrc(impl, ssrc);
+	if (sess == NULL) {
+		pw_log_warn("unknown SSRC %u", ssrc);
+		return;
+	}
+
+	seqnum = ntohl(hdr->seqnum);
+	pw_log_debug("got RS seqnum %u", seqnum);
+}
+
 static void parse_apple_midi_cmd(struct impl *impl, bool ctrl, uint8_t *buffer,
 		ssize_t len, struct sockaddr_storage *sa, socklen_t salen)
 {
@@ -889,12 +961,18 @@ static void parse_apple_midi_cmd(struct impl *impl, bool ctrl, uint8_t *buffer,
 	case APPLE_MIDI_CMD_OK:
 		parse_apple_midi_cmd_ok(impl, ctrl, buffer, len, sa, salen);
 		break;
+	case APPLE_MIDI_CMD_NO:
+		parse_apple_midi_cmd_no(impl, ctrl, buffer, len, sa, salen);
+		break;
 	case APPLE_MIDI_CMD_CK:
 		parse_apple_midi_cmd_ck(impl, ctrl, buffer, len, sa, salen);
 		break;
 	case APPLE_MIDI_CMD_BY:
 		parse_apple_midi_cmd_by(impl, ctrl, buffer, len, sa, salen);
 		break;
+	case APPLE_MIDI_CMD_RS:
+		parse_apple_midi_cmd_rs(impl, ctrl, buffer, len, sa, salen);
+		break;
 	default:
 		break;
 	}
diff --git a/src/modules/module-rtp/apple-midi.h b/src/modules/module-rtp/apple-midi.h
index a1b20b396..2ef29afe2 100644
--- a/src/modules/module-rtp/apple-midi.h
+++ b/src/modules/module-rtp/apple-midi.h
@@ -32,11 +32,18 @@ struct rtp_apple_midi_ck {
 	uint32_t ts3_l;
 } __attribute__ ((packed));
 
+struct rtp_apple_midi_rs {
+	uint32_t cmd;
+	uint32_t ssrc;
+	uint32_t seqnum;
+} __attribute__ ((packed));
+
 #define APPLE_MIDI_CMD_IN	(0xffff0000 | 'I'<<8 | 'N')
 #define APPLE_MIDI_CMD_NO	(0xffff0000 | 'N'<<8 | 'O')
 #define APPLE_MIDI_CMD_OK	(0xffff0000 | 'O'<<8 | 'K')
 #define APPLE_MIDI_CMD_CK	(0xffff0000 | 'C'<<8 | 'K')
 #define APPLE_MIDI_CMD_BY	(0xffff0000 | 'B'<<8 | 'Y')
+#define APPLE_MIDI_CMD_RS	(0xffff0000 | 'R'<<8 | 'S')
 
 #ifdef __cplusplus
 }
diff --git a/src/modules/module-rtp/audio.c b/src/modules/module-rtp/audio.c
index 3612ad470..452aa28ac 100644
--- a/src/modules/module-rtp/audio.c
+++ b/src/modules/module-rtp/audio.c
@@ -142,7 +142,7 @@ static int receive_rtp_audio(struct impl *impl, uint8_t *buffer, ssize_t len)
 
 	if (!impl->have_sync) {
 		pw_log_info("sync to timestamp:%u seq:%u ts_offset:%u SSRC:%u target:%u direct:%u",
-				write, impl->seq-1, impl->ts_offset, impl->ssrc,
+				timestamp, seq, impl->ts_offset, impl->ssrc,
 				impl->target_buffer, impl->direct_timestamp);
 
 		/* we read from timestamp, keeping target_buffer of data
diff --git a/src/modules/module-rtp/midi.c b/src/modules/module-rtp/midi.c
index bb9ae4a88..1eda8fd2a 100644
--- a/src/modules/module-rtp/midi.c
+++ b/src/modules/module-rtp/midi.c
@@ -126,6 +126,13 @@ static int get_midi_size(uint8_t *p, uint32_t avail)
 	}
 	return size;
 }
+static int parse_journal(struct impl *impl, uint8_t *packet, uint16_t seq, uint32_t len)
+{
+	struct rtp_midi_journal *j = (struct rtp_midi_journal*)packet;
+	uint16_t seqnum = ntohs(j->checkpoint_seqnum);
+	rtp_stream_emit_send_feedback(impl, seqnum);
+	return 0;
+}
 
 static double get_time(struct impl *impl)
 {
@@ -143,8 +150,8 @@ static double get_time(struct impl *impl)
 	return t;
 }
 
-static int receive_midi(struct impl *impl, uint8_t *packet,
-		uint32_t timestamp, uint32_t payload_offset, uint32_t plen)
+static int receive_midi(struct impl *impl, uint8_t *packet, uint32_t timestamp,
+		uint16_t seq, uint32_t payload_offset, uint32_t plen)
 {
 	uint32_t write;
 	struct rtp_midi_header *hdr;
@@ -160,7 +167,7 @@ static int receive_midi(struct impl *impl, uint8_t *packet,
 		 * midi events and render them in the corresponding cycle */
 		if (!impl->have_sync) {
 			pw_log_info("sync to timestamp:%u seq:%u ts_offset:%u SSRC:%u direct:%d",
-				timestamp, impl->seq-1, impl->ts_offset, impl->ssrc,
+				timestamp, seq, impl->ts_offset, impl->ssrc,
 				impl->direct_timestamp);
 			impl->have_sync = true;
 		}
@@ -186,7 +193,7 @@ static int receive_midi(struct impl *impl, uint8_t *packet,
 			spa_dll_set_bw(&impl->dll, SPA_DLL_BW_MIN, 256, impl->rate);
 
 			pw_log_info("sync to timestamp:%u seq:%u ts_offset:%u SSRC:%u direct:%d",
-				timestamp, impl->seq-1, impl->ts_offset, impl->ssrc,
+				timestamp, seq, impl->ts_offset, impl->ssrc,
 				impl->direct_timestamp);
 			impl->have_sync = true;
 			impl->ring.readindex = impl->ring.writeindex;
@@ -221,6 +228,8 @@ static int receive_midi(struct impl *impl, uint8_t *packet,
 		pw_log_warn("invalid packet %d > %d", end, plen);
 		return -EINVAL;
 	}
+	if (hdr->j)
+		parse_journal(impl, &packet[end], seq, plen - end);
 
 	ptr = SPA_PTROFF(impl->buffer, write & BUFFER_MASK2, void);
 
@@ -258,6 +267,8 @@ static int receive_midi(struct impl *impl, uint8_t *packet,
 
 	write += b.state.offset;
 	spa_ringbuffer_write_update(&impl->ring, write);
+
+
 	return 0;
 }
 
@@ -297,7 +308,7 @@ static int receive_rtp_midi(struct impl *impl, uint8_t *buffer, ssize_t len)
 
 	impl->receiving = true;
 
-	return receive_midi(impl, buffer, timestamp, hlen, len);
+	return receive_midi(impl, buffer, timestamp, seq, hlen, len);
 
 short_packet:
 	pw_log_warn("short packet received");
diff --git a/src/modules/module-rtp/rtp.h b/src/modules/module-rtp/rtp.h
index 043a41f8c..1fd3bedef 100644
--- a/src/modules/module-rtp/rtp.h
+++ b/src/modules/module-rtp/rtp.h
@@ -58,17 +58,34 @@ struct rtp_midi_header {
 	unsigned z:1;
 	unsigned j:1;
 	unsigned b:1;
-	uint8_t len_b;
 #elif __BYTE_ORDER == __BIG_ENDIAN
 	unsigned b:1;
 	unsigned j:1;
 	unsigned z:1;
 	unsigned p:1;
 	unsigned len:4;
-	uint8_t len_b;
 #endif
+	uint8_t len_b;
 } __attribute__ ((packed));
 
+struct rtp_midi_journal {
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+	unsigned totchan:4;
+	unsigned H:1;
+	unsigned A:1;
+	unsigned Y:1;
+	unsigned S:1;
+#elif __BYTE_ORDER == __BIG_ENDIAN
+	unsigned S:1;
+	unsigned Y:1;
+	unsigned A:1;
+	unsigned H:1;
+	unsigned totchan:4;
+#endif
+	uint16_t checkpoint_seqnum;
+} __attribute__ ((packed));
+
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/modules/module-rtp/stream.c b/src/modules/module-rtp/stream.c
index 1a251e465..975f83b47 100644
--- a/src/modules/module-rtp/stream.c
+++ b/src/modules/module-rtp/stream.c
@@ -31,6 +31,7 @@
 #define rtp_stream_emit_destroy(s)		rtp_stream_emit(s, destroy, 0)
 #define rtp_stream_emit_state_changed(s,n,e)	rtp_stream_emit(s, state_changed,0,n,e)
 #define rtp_stream_emit_send_packet(s,i,l)	rtp_stream_emit(s, send_packet,0,i,l)
+#define rtp_stream_emit_send_feedback(s,seq)	rtp_stream_emit(s, send_feedback,0,seq)
 
 struct impl {
 	struct spa_audio_info info;
diff --git a/src/modules/module-rtp/stream.h b/src/modules/module-rtp/stream.h
index 1af20b1d4..7686c565e 100644
--- a/src/modules/module-rtp/stream.h
+++ b/src/modules/module-rtp/stream.h
@@ -32,6 +32,8 @@ struct rtp_stream_events {
 	void (*state_changed) (void *data, bool started, const char *error);
 
 	void (*send_packet) (void *data, struct iovec *iov, size_t iovlen);
+
+	void (*send_feedback) (void *data, uint32_t senum);
 };
 
 struct rtp_stream *rtp_stream_new(struct pw_core *core,