From 49cd0545340f1920d0768d64940d494b30d1cf48 Mon Sep 17 00:00:00 2001
From: Jacob Barthelmeh <jacob@wolfssl.com>
Date: Tue, 11 Sep 2018 16:37:22 -0600
Subject: [PATCH] exit "put" loop if at end of file

---
 src/wolfsftp.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/wolfsftp.c b/src/wolfsftp.c
index 574e9ba7..63e5b932 100644
--- a/src/wolfsftp.c
+++ b/src/wolfsftp.c
@@ -4247,6 +4247,9 @@ int wolfSSH_SFTP_Put(WOLFSSH* ssh, char* from, char* to, byte resume,
         ret = WS_SUCCESS;
         do {
             rSz = (int)WFREAD(r, 1, WOLFSSH_MAX_SFTP_RW, fl);
+            if (rSz <= 0 ) {
+                break; /* either at end of file or error */
+            }
             sz = wolfSSH_SFTP_SendWritePacket(ssh, handle, handleSz, pOfst,
                     r, rSz);
             if (sz > 0) {