diff --git a/include/proto/stream_interface.h b/include/proto/stream_interface.h
index 46df1bd..7202443 100644
--- a/include/proto/stream_interface.h
+++ b/include/proto/stream_interface.h
@@ -45,7 +45,8 @@
 int conn_si_send_proxy(struct connection *conn, unsigned int flag);
 struct appctx *si_register_handler(struct stream_interface *si, struct applet *app);
 void si_applet_wake_cb(struct stream_interface *si);
-void si_update(struct stream_interface *si);
+void si_update_rx(struct stream_interface *si);
+void si_update_tx(struct stream_interface *si);
 int si_cs_recv(struct conn_stream *cs);
 struct task *si_cs_io_cb(struct task *t, void *ctx, unsigned short state);
 void si_update_both(struct stream_interface *si_f, struct stream_interface *si_b);
@@ -529,6 +530,13 @@
 	return ret;
 }
 
+/* Combines both si_update_rx() and si_update_tx() at once */
+static inline void si_update(struct stream_interface *si)
+{
+	si_update_rx(si);
+	si_update_tx(si);
+}
+
 /* Returns info about the conn_stream <cs>, if not NULL. It call the mux layer's
  * get_cs_info() function, if it exists. On success, it returns a cs_info
  * structure. Otherwise, on error, if the mux does not implement get_cs_info()
diff --git a/src/stream_interface.c b/src/stream_interface.c
index 046a80e..e7273b7 100644
--- a/src/stream_interface.c
+++ b/src/stream_interface.c
@@ -793,76 +793,93 @@
 }
 
 /* This function is designed to be called from within the stream handler to
- * update the channels' expiration timers and the stream interface's flags
- * based on the channels' flags. It needs to be called only once after the
- * channels' flags have settled down, and before they are cleared, though it
- * doesn't harm to call it as often as desired (it just slightly hurts
- * performance). It must not be called from outside of the stream handler,
- * as what it does will be used to compute the stream task's expiration.
+ * update the input channel's expiration timer and the stream interface's
+ * Rx flags based on the channel's flags. It needs to be called only once
+ * after the channel's flags have settled down, and before they are cleared,
+ * though it doesn't harm to call it as often as desired (it just slightly
+ * hurts performance). It must not be called from outside of the stream
+ * handler, as what it does will be used to compute the stream task's
+ * expiration.
  */
-void si_update(struct stream_interface *si)
+void si_update_rx(struct stream_interface *si)
 {
 	struct channel *ic = si_ic(si);
-	struct channel *oc = si_oc(si);
 
-	if (!(ic->flags & CF_SHUTR)) {
-		/* Read not closed, update FD status and timeout for reads */
-		if (ic->flags & CF_DONT_READ)
-			si_rx_chan_blk(si);
-		else
-			si_rx_chan_rdy(si);
+	if (ic->flags & CF_SHUTR) {
+		si_rx_shut_blk(si);
+		return;
+	}
 
-		if (!channel_is_empty(ic)) {
-			/* stop reading, imposed by channel's policy or contents */
-			si_rx_room_blk(si);
-		}
-		else {
-			/* (re)start reading and update timeout. Note: we don't recompute the timeout
-			 * everytime we get here, otherwise it would risk never to expire. We only
-			 * update it if is was not yet set. The stream socket handler will already
-			 * have updated it if there has been a completed I/O.
-			 */
-			si_rx_room_rdy(si);
-		}
-		if (si->flags & SI_FL_RXBLK_ANY & ~SI_FL_RX_WAIT_EP)
-			ic->rex = TICK_ETERNITY;
-		else if (!(ic->flags & CF_READ_NOEXP) && !tick_isset(ic->rex))
-			ic->rex = tick_add_ifset(now_ms, ic->rto);
+	/* Read not closed, update FD status and timeout for reads */
+	if (ic->flags & CF_DONT_READ)
+		si_rx_chan_blk(si);
+	else
+		si_rx_chan_rdy(si);
 
-		si_chk_rcv(si);
+	if (!channel_is_empty(ic)) {
+		/* stop reading, imposed by channel's policy or contents */
+		si_rx_room_blk(si);
 	}
-	else
-		si_rx_shut_blk(si);
+	else {
+		/* (re)start reading and update timeout. Note: we don't recompute the timeout
+		 * everytime we get here, otherwise it would risk never to expire. We only
+		 * update it if is was not yet set. The stream socket handler will already
+		 * have updated it if there has been a completed I/O.
+		 */
+		si_rx_room_rdy(si);
+	}
+	if (si->flags & SI_FL_RXBLK_ANY & ~SI_FL_RX_WAIT_EP)
+		ic->rex = TICK_ETERNITY;
+	else if (!(ic->flags & CF_READ_NOEXP) && !tick_isset(ic->rex))
+		ic->rex = tick_add_ifset(now_ms, ic->rto);
 
-	if (!(oc->flags & CF_SHUTW)) {
-		/* Write not closed, update FD status and timeout for writes */
-		if (channel_is_empty(oc)) {
-			/* stop writing */
-			if (!(si->flags & SI_FL_WAIT_DATA)) {
-				if ((oc->flags & CF_SHUTW_NOW) == 0)
-					si->flags |= SI_FL_WAIT_DATA;
-				oc->wex = TICK_ETERNITY;
-			}
+	si_chk_rcv(si);
+}
+
+/* This function is designed to be called from within the stream handler to
+ * update the output channel's expiration timer and the stream interface's
+ * Tx flags based on the channel's flags. It needs to be called only once
+ * after the channel's flags have settled down, and before they are cleared,
+ * though it doesn't harm to call it as often as desired (it just slightly
+ * hurts performance). It must not be called from outside of the stream
+ * handler, as what it does will be used to compute the stream task's
+ * expiration.
+ */
+void si_update_tx(struct stream_interface *si)
+{
+	struct channel *oc = si_oc(si);
+	struct channel *ic = si_ic(si);
+
+	if (oc->flags & CF_SHUTW)
+		return;
+
+	/* Write not closed, update FD status and timeout for writes */
+	if (channel_is_empty(oc)) {
+		/* stop writing */
+		if (!(si->flags & SI_FL_WAIT_DATA)) {
+			if ((oc->flags & CF_SHUTW_NOW) == 0)
+				si->flags |= SI_FL_WAIT_DATA;
+			oc->wex = TICK_ETERNITY;
 		}
-		else {
-			/* (re)start writing and update timeout. Note: we don't recompute the timeout
-			 * everytime we get here, otherwise it would risk never to expire. We only
-			 * update it if is was not yet set. The stream socket handler will already
-			 * have updated it if there has been a completed I/O.
+		return;
+	}
+
+	/* (re)start writing and update timeout. Note: we don't recompute the timeout
+	 * everytime we get here, otherwise it would risk never to expire. We only
+	 * update it if is was not yet set. The stream socket handler will already
+	 * have updated it if there has been a completed I/O.
+	 */
+	si->flags &= ~SI_FL_WAIT_DATA;
+	if (!tick_isset(oc->wex)) {
+		oc->wex = tick_add_ifset(now_ms, oc->wto);
+		if (tick_isset(ic->rex) && !(si->flags & SI_FL_INDEP_STR)) {
+			/* Note: depending on the protocol, we don't know if we're waiting
+			 * for incoming data or not. So in order to prevent the socket from
+			 * expiring read timeouts during writes, we refresh the read timeout,
+			 * except if it was already infinite or if we have explicitly setup
+			 * independent streams.
 			 */
-			si->flags &= ~SI_FL_WAIT_DATA;
-			if (!tick_isset(oc->wex)) {
-				oc->wex = tick_add_ifset(now_ms, oc->wto);
-				if (tick_isset(ic->rex) && !(si->flags & SI_FL_INDEP_STR)) {
-					/* Note: depending on the protocol, we don't know if we're waiting
-					 * for incoming data or not. So in order to prevent the socket from
-					 * expiring read timeouts during writes, we refresh the read timeout,
-					 * except if it was already infinite or if we have explicitly setup
-					 * independent streams.
-					 */
-					ic->rex = tick_add_ifset(now_ms, ic->rto);
-				}
-			}
+			ic->rex = tick_add_ifset(now_ms, ic->rto);
 		}
 	}
 }