Status Code: 426 No Sec-WebSocket-Protocols requested supported
Hi all,
using "Push" example i have Status Code error 426.
I don't know how set one protocol on response header.
Any idea?
Thanks

**Request Header**
GET ws://<ip>:<port>/ocpp/BTC1 HTTP/1.1
Host: <ip>:<port>
Connection: Upgrade
Pragma: no-cache
Cache-Control: no-cache
Upgrade: websocket
Origin: file://
Sec-WebSocket-Version: 13
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/<some other>
Accept-Encoding: gzip, deflate
Accept-Language: it-IT,it;q=0.9,en;q=0.8
Sec-WebSocket-Key: KET8SE4BEUe9VF+JnuctiA==
Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits
Sec-WebSocket-Protocol: ocpp1.6, ocpp1.5


**Response Header**
HTTP/1.1 426 No Sec-WebSocket-Protocols requested supported
Connection: Upgrade
Upgrade: websocket
Sec-WebSocket-Version: 13
Sec-WebSocket-Protocol: 0
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