For your interest; here is the output from WS debugger from chrome: Request URL:ws://192.168.217.115:8080/guacamole/websocket-tunnel?token=4DCC454D12B7F3C94527AF58561DB49EF5737345164CA56BAAA7D21AEBAB9786&GUAC_DATA_SOURCE=mysql&GUAC_ID=1&GUAC_TYPE=c&GUAC_WIDTH=1045&GUAC_HEIGHT=769&GUAC_DPI=96&GUAC_AUDIO=audio%2FL8&GUAC_AUDIO=audio%2FL16&GUAC_IMAGE=image%2Fjpeg&GUAC_IMAGE=image%2Fpng&GUAC_IMAGE=image%2Fwebp Request Method:GET Status Code:101 Switching Protocols Response Headers view source Connection:upgrade Date:Thu, 21 Dec 2017 12:38:05 GMT Sec-WebSocket-Accept:MJ0SgWjjAr0f9XlSx6tNumRP2wE= Sec-WebSocket-Extensions:permessage-deflate;client_max_window_bits=15 Sec-WebSocket-Protocol:guacamole Server:Apache-Coyote/1.1 Upgrade:websocket Request Headers view source Accept-Encoding:gzip, deflate Accept-Language:en-US,en;q=0.8,nl;q=0.6 Cache-Control:no-cache Connection:Upgrade Cookie:JSESSIONID=3A1DB9BABE30D26F0E1A1699CAC85780; GUAC_AUTH=%7B%22authToken%22%3A%224DCC454D12B7F3C94527AF58561DB49EF5737345164CA56BAAA7D21AEBAB9786%22%2C%22username%22%3A%22guacadmin%22%2C%22dataSource%22%3A%22mysql%22%2C%22availableDataSources%22%3A%5B%22mysql%22%2C%22mysql-shared%22%5D%7D Host:192.168.217.115:8080 Origin:http://192.168.217.115:8080 Pragma:no-cache Sec-WebSocket-Extensions:permessage-deflate; client_max_window_bits Sec-WebSocket-Key:QJSq7pjXyRxIYdk3zQQA6g== Sec-WebSocket-Protocol:guacamole Sec-WebSocket-Version:13 Upgrade:websocket User-Agent:Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36 Query String Parameters view source view URL encoded token:4DCC454D12B7F3C94527AF58561DB49EF5737345164CA56BAAA7D21AEBAB9786 GUAC_DATA_SOURCE:mysql GUAC_ID:1 GUAC_TYPE:c GUAC_WIDTH:1045 GUAC_HEIGHT:769 GUAC_DPI:96 GUAC_AUDIO:audio/L8 GUAC_AUDIO:audio/L16 GUAC_IMAGE:image/jpeg GUAC_IMAGE:image/png GUAC_IMAGE:image/webp
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