This patch set 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. Changes v2 * removed automatic websocket recognition * added new lwebsock socket on port 5700 + display when the vnc option "websocket" is passed on * adapted vnc_connect vnc_listen_read to differ between websocket * added separate event handler to read the Websocket handshake Changes v3 * added manual port specification by using ",websocket=<port>" * switched from memmem() to g_strstr_len() * removed masked_size from vncws_decode_frame() * resetted vnc_tls variable to default in the configure script Changes v4 * incorporated suggestions from Stefan Hajnoczi * moved websockets encoding from vnc_write to its own client_write function * moved websockets decoding to its own client_read function * added initialization checks to vnc_disconnect to prevent crashes if a regular client connects to the websocket port Changes v5 * added initialized variable to VncState to prevent crashes during vnc_disconnect - the previously added initialization checks didn't prevent segfaults when a websocket client was connected Changes v6 * incorporated suggestions from "Blue Swirl" * updated vncws_handshake_read to check for the header end tag and to not reset the buffer afterwards Changes v7 * fixed vnc-ws header define Tim Hardeck (3): vnc: added buffer_advance function vnc: added initial websocket protocol support vnc: fix possible uninitialized removals configure | 27 +++++- qemu-options.hx | 8 ++ ui/Makefile.objs | 1 + ui/vnc-ws.c | 284 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ ui/vnc-ws.h | 86 +++++++++++++++++ ui/vnc.c | 211 +++++++++++++++++++++++++++++++++++----- ui/vnc.h | 21 ++++ 7 files changed, 610 insertions(+), 28 deletions(-) create mode 100644 ui/vnc-ws.c create mode 100644 ui/vnc-ws.h -- 1.7.10.4
