const crypto/tls.alertProtocolVersion

8 uses

	crypto/tls (current package)
		alert.go#L46: 	alertProtocolVersion              alert = 70
		alert.go#L83: 	alertProtocolVersion:              "protocol version not supported",
		conn.go#L646: 		c.sendAlert(alertProtocolVersion)
		conn.go#L659: 		c.sendAlert(alertProtocolVersion)
		handshake_client.go#L512: 		c.sendAlert(alertProtocolVersion)
		handshake_client_tls13.go#L52: 		c.sendAlert(alertProtocolVersion)
		handshake_server.go#L192: 		c.sendAlert(alertProtocolVersion)
		handshake_server_tls13.go#L271: 				c.sendAlert(alertProtocolVersion)