From ec8f8d4e10d4f942cfd8f4a21255f1eb2359534f Mon Sep 17 00:00:00 2001
From: Darien Raymond <admin@v2ray.com>
Date: Mon, 20 Nov 2017 11:13:27 +0100
Subject: [PATCH] remove check for ReaderFrom on underlying writer, as it may
 be badly implemented.

---
 common/buf/writer.go | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/common/buf/writer.go b/common/buf/writer.go
index 581a8668b..25a3d03f8 100644
--- a/common/buf/writer.go
+++ b/common/buf/writer.go
@@ -137,12 +137,8 @@ func (w *BufferedWriter) ReadFrom(reader io.Reader) (int64, error) {
 	}
 
 	w.buffered = false
-
-	if readerFrom, ok := w.writer.(io.ReaderFrom); ok {
-		return readerFrom.ReadFrom(reader)
-	}
-
 	err := Copy(NewReader(reader), w, CountSize(&sc))
+
 	return sc.Size, err
 }