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Unknown server message type when connecting to UltraVNC server

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JFarlette
Posts: 1
Joined: 2025-01-20 19:14

Unknown server message type when connecting to UltraVNC server

Post by JFarlette »

I am working on a VNC proxy application. When connecting to an UltraVNC server version 1.4.3.6 with the UltraVNC client, four unknown messages are received from the server. The message sequence is: 173, 13, 173, 7. This sequence is only received when connecting with the UltraVNC client. If I use TightVNC for example, they are not received.

You can find screen caps from Wireshark and the pcap file here: https://drive.google.com/drive/folders/ ... sp=sharing

Can anyone explain what these messages are about and where I can't find more details about them?
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