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vnc: added initial websocket protocol support

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This patch adds basic Websocket Protocol version 13 - RFC 6455 - support
to QEMU VNC. Binary encoding support on the client side is mandatory.

Because of the GnuTLS requirement the Websockets implementation is
optional (--enable-vnc-ws).

To activate Websocket support the VNC option "websocket"is used, for
example "-vnc :0,websocket".
The listen port for Websocket connections is (5700 + display) so if
QEMU VNC is started with :0 the Websocket port would be 5700.
As an alternative the Websocket port could be manually specified by
using ",websocket=<port>" instead.

Parts of the implementation base on Anthony Liguori's QEMU Websocket
patch from 2010 and on Joel Martin's LibVNC Websocket implementation.

Signed-off-by: Tim Hardeck <thardeck@suse.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Tim Hardeck 2013-01-21 11:04:44 +01:00 • committed by Anthony Liguori
parent 32ed26808d
commit 7536ee4bc3
7 changed files with 591 additions and 21 deletions
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1
ui/Makefile.objs
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@ -4,6 +4,7 @@ vnc-obj-y += vnc-enc-tight.o vnc-palette.o
vnc-obj-y += vnc-enc-zrle.o
vnc-obj-$(CONFIG_VNC_TLS) += vnc-tls.o vnc-auth-vencrypt.o
vnc-obj-$(CONFIG_VNC_SASL) += vnc-auth-sasl.o
vnc-obj-$(CONFIG_VNC_WS) += vnc-ws.o
vnc-obj-y += vnc-jobs.o
common-obj-y += keymaps.o console.o cursor.o input.o qemu-pixman.o