vendor: update github.com/hashicorp/memberlist (#3176)

vendor/github.com/hashicorp/memberlist/net.go

@@ -55,6 +55,7 @@ const (
 	encryptMsg
 	nackRespMsg
 	hasCrcMsg
+	errMsg
 )
 
 // compressionType is used to specify the compression algorithm
@@ -105,6 +106,11 @@ type nackResp struct {
 	SeqNo uint32
 }
 
+// err response is sent to relay the error from the remote end
+type errResp struct {
+	Error string
+}
+
 // suspect is broadcast when we suspect a node is dead
 type suspect struct {
 	Incarnation uint32
@@ -209,6 +215,19 @@ func (m *Memberlist) handleConn(conn net.Conn) {
 	if err != nil {
 		if err != io.EOF {
 			m.logger.Printf("[ERR] memberlist: failed to receive: %s %s", err, LogConn(conn))
+
+			resp := errResp{err.Error()}
+			out, err := encode(errMsg, &resp)
+			if err != nil {
+				m.logger.Printf("[ERR] memberlist: Failed to encode error response: %s", err)
+				return
+			}
+
+			err = m.rawSendMsgStream(conn, out.Bytes())
+			if err != nil {
+				m.logger.Printf("[ERR] memberlist: Failed to send error: %s %s", err, LogConn(conn))
+				return
+			}
 		}
 		return
 	}
@@ -726,6 +745,14 @@ func (m *Memberlist) sendAndReceiveState(addr string, join bool) ([]pushNodeStat
 		return nil, nil, err
 	}
 
+	if msgType == errMsg {
+		var resp errResp
+		if err := dec.Decode(&resp); err != nil {
+			return nil, nil, err
+		}
+		return nil, nil, fmt.Errorf("remote error: %v", resp.Error)
+	}
+
 	// Quit if not push/pull
 	if msgType != pushPullMsg {
 		err := fmt.Errorf("received invalid msgType (%d), expected pushPullMsg (%d) %s", msgType, pushPullMsg, LogConn(conn))

vendor/vendor.json

@@ -403,10 +403,10 @@
 			"revisionTime": "2015-06-09T07:04:31Z"
 		},
 		{
-			"checksumSHA1": "AoIvQFHycqypYK57ZjiWzlQmdwk=",
+			"checksumSHA1": "uG7wNsy24v7bJxFmWVcL3v5Wvx0=",
 			"path": "github.com/hashicorp/memberlist",
-			"revision": "16fe34d996eba2b68f6f46f26c51c617c6bc1bf0",
-			"revisionTime": "2017-05-26T19:17:51Z"
+			"revision": "0a136466d82a7e6f1b7866dde3578ac28ed675ad",
+			"revisionTime": "2017-06-22T10:25:31Z"
 		},
 		{
 			"checksumSHA1": "qnlqWJYV81ENr61SZk9c65R1mDo=",