From a2d1f21b43c8613848f025b5a9fbe77a5031641e Mon Sep 17 00:00:00 2001
From: aozima <wuyangyong@gmail.com>
Date: Mon, 11 Dec 2017 17:25:25 +0800
Subject: [PATCH] [LWIP] fixed closesocket issues: socket has been closed,
 delete it from file system fd.

---
 components/dfs/filesystems/net/net_sockets.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/components/dfs/filesystems/net/net_sockets.c b/components/dfs/filesystems/net/net_sockets.c
index a22fbdc9ad..4f33571129 100644
--- a/components/dfs/filesystems/net/net_sockets.c
+++ b/components/dfs/filesystems/net/net_sockets.c
@@ -327,6 +327,13 @@ RTM_EXPORT(socket);
 int closesocket(int s)
 {
     int sock = dfs_net_getsocket(s);
+    struct dfs_fd *d;
+
+    d = fd_get(s);
+
+    /* socket has been closed, delete it from file system fd */
+    fd_put(d);
+    fd_put(d);
 
     return lwip_close(sock);
 }