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RFC: backend-vnc: initial commit

Stefan Agner requested to merge agners/weston:rfc-vnc-support into master

This adds basic VNC protocol support. This implementation does not support authentication and only supports raw encoding. The backend implements the VNC server protocol itself as it is fairly simple when only basic features are supported.

Our tests with RDP showed race conditions and interoperability issues between different RDP clients (and version). Due to the complexity of the RDP protocol and the involved library those issues are non- trivial to debug. Furthermore the RDP library seems to have a unstable API which breaks the Weston backend hard to maintain.

This implementation of the VNC (also known as RFB, remote framebuffer) protocol is very minimalistic and only supports raw frame. This makes it easier to maintain and less suspectable to bugs.

Signed-off-by: Stefan Agner stefan@agner.ch

Edited by Stefan Agner

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