Add name to errors from v2ray HTTP transports

transport/v2raygrpclite/client.go

@@ -100,7 +100,7 @@ func (c *Client) DialContext(ctx context.Context) (net.Conn, error) {
 			conn.setup(nil, err)
 		} else if response.StatusCode != 200 {
 			response.Body.Close()
-			conn.setup(nil, E.New("unexpected status: ", response.Status))
+			conn.setup(nil, E.New("v2ray-grpc: unexpected status: ", response.Status))
 		} else {
 			conn.setup(response.Body, nil)
 		}

transport/v2rayhttp/client.go

@@ -146,7 +146,7 @@ func (c *Client) dialHTTP2(ctx context.Context) (net.Conn, error) {
 			conn.Setup(nil, err)
 		} else if response.StatusCode != 200 {
 			response.Body.Close()
-			conn.Setup(nil, E.New("unexpected status: ", response.Status))
+			conn.Setup(nil, E.New("v2ray-http: unexpected status: ", response.Status))
 		} else {
 			conn.Setup(response.Body, nil)
 		}

transport/v2rayhttp/conn.go

@@ -43,7 +43,7 @@ func (c *HTTPConn) Read(b []byte) (n int, err error) {
 			return 0, E.Cause(err, "read response")
 		}
 		if response.StatusCode != 200 {
-			return 0, E.New("unexpected status: ", response.Status)
+			return 0, E.New("v2ray-http: unexpected status: ", response.Status)
 		}
 		if cacheLen := reader.Buffered(); cacheLen > 0 {
 			c.responseCache = buf.NewSize(cacheLen)

transport/v2rayhttpupgrade/client.go

@@ -104,7 +104,7 @@ func (c *Client) DialContext(ctx context.Context) (net.Conn, error) {
 	if response.StatusCode != 101 ||
 		!strings.EqualFold(response.Header.Get("Connection"), "upgrade") ||
 		!strings.EqualFold(response.Header.Get("Upgrade"), "websocket") {
-		return nil, E.New("unexpected status: ", response.Status)
+		return nil, E.New("v2ray-http-upgrade: unexpected status: ", response.Status)
 	}
 	if bufReader.Buffered() > 0 {
 		buffer := buf.NewSize(bufReader.Buffered())