From e2cf0cad391ae8d8d798cc440e7a1414b0a45a44 Mon Sep 17 00:00:00 2001
From: Bowen Wang <wangbowen6@xiaomi.com>
Date: Tue, 24 Oct 2023 16:33:17 +0800
Subject: [PATCH] rpmsg_sockif: recv/recvmsg return 0 when peer close

Follow the posix standard:
If no messages are available to be received and the peer has
performed an orderly shutdown, recv() shall return 0.

Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
---
 net/rpmsg/rpmsg_sockif.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/rpmsg/rpmsg_sockif.c b/net/rpmsg/rpmsg_sockif.c
index 4ff9838204..9931c9903f 100644
--- a/net/rpmsg/rpmsg_sockif.c
+++ b/net/rpmsg/rpmsg_sockif.c
@@ -1301,7 +1301,7 @@ static ssize_t rpmsg_socket_recvmsg(FAR struct socket *psock,
                       _SO_TIMEOUT(conn->sconn.s_rcvtimeo));
   if (!conn->ept.rdev || conn->unbind)
     {
-      ret = -ECONNRESET;
+      ret = 0;
     }
 
   nxmutex_lock(&conn->recvlock);