[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/github.com/gorilla/websocket/join.go b/vendor/github.com/gorilla/websocket/join.go
new file mode 100644
index 0000000..c64f8c8
--- /dev/null
+++ b/vendor/github.com/gorilla/websocket/join.go
@@ -0,0 +1,42 @@
+// Copyright 2019 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package websocket
+
+import (
+ "io"
+ "strings"
+)
+
+// JoinMessages concatenates received messages to create a single io.Reader.
+// The string term is appended to each message. The returned reader does not
+// support concurrent calls to the Read method.
+func JoinMessages(c *Conn, term string) io.Reader {
+ return &joinReader{c: c, term: term}
+}
+
+type joinReader struct {
+ c *Conn
+ term string
+ r io.Reader
+}
+
+func (r *joinReader) Read(p []byte) (int, error) {
+ if r.r == nil {
+ var err error
+ _, r.r, err = r.c.NextReader()
+ if err != nil {
+ return 0, err
+ }
+ if r.term != "" {
+ r.r = io.MultiReader(r.r, strings.NewReader(r.term))
+ }
+ }
+ n, err := r.r.Read(p)
+ if err == io.EOF {
+ err = nil
+ r.r = nil
+ }
+ return n, err
+}