From 0c2f386bebdf894ed4fc2ea46f9a9c0055e6d63b Mon Sep 17 00:00:00 2001
From: Frediano Ziglio <fziglio@redhat.com>
Date: Sat, 22 Jun 2019 08:45:45 +0100
Subject: [PATCH] websocket: Fix updating remaining bytes to write in
 websocket_write

"len" is not always the full remainder (consider the case when
we are writing a partial frame).

Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Jeremy White <jwhite@codeweavers.com>
---
 server/websocket.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/server/websocket.c b/server/websocket.c
index afb7502a..dda71f76 100644
--- a/server/websocket.c
+++ b/server/websocket.c
@@ -478,10 +478,8 @@ int websocket_write(RedsWebSocket *ws, const void *buf, size_t len)
     }
 
     rc = ws->raw_write(ws->raw_stream, buf, len);
-    if (rc <= 0) {
-        ws->write_remainder = len;
-    } else {
-        ws->write_remainder = len - rc;
+    if (rc > 0) {
+        ws->write_remainder -= rc;
     }
     return rc;
 }