Edgar Kaziakhmedov a46ded1de5 io/channel-websock: handle continuous reads without any data ... According to the current implementation of websocket protocol in QEMU, qio_channel_websock_handshake_io tries to read handshake from the channel to start communication over socket. But this approach doesn't cover scenario when socket was closed while handshaking. Therefore, if G_IO_IN is caught and qio_channel_read returns zero, error has to be set and connection has to be done. Such behaviour causes 100% CPU load in main QEMU loop, because main loop poll continues to receive and handle G_IO_IN events from websocket. Step to reproduce 100% CPU load: 1) start qemu with the simplest configuration $ qemu -vnc [::1]:1,websocket=7500 2) open any vnc listener (which doesn't follow websocket protocol) $ vncviewer :7500 3) kill listener 4) qemu main thread eats 100% CPU Signed-off-by: Edgar Kaziakhmedov <edgar.kaziakhmedov@virtuozzo.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com>		2018-02-15 16:54:57 +00:00
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channel-buffer.c	io: avoid double-free when closing QIOChannelBuffer	2016-05-26 11:31:09 +05:30
channel-command.c	io: add methods to set I/O handlers on AioContext	2017-02-21 11:14:07 +00:00
channel-file.c	io: add methods to set I/O handlers on AioContext	2017-02-21 11:14:07 +00:00
channel-socket.c	util: remove the obsolete non-blocking connect	2017-09-05 13:21:58 +01:00
channel-tls.c	io: add methods to set I/O handlers on AioContext	2017-02-21 11:14:07 +00:00
channel-util.c	all: Clean up includes	2016-02-23 12:43:05 +00:00
channel-watch.c	io: add methods to set I/O handlers on AioContext	2017-02-21 11:14:07 +00:00
channel-websock.c	io/channel-websock: handle continuous reads without any data	2018-02-15 16:54:57 +00:00
channel.c	io: Add new qio_channel_read{, v}_all_eof functions	2017-09-06 10:11:54 -05:00
dns-resolver.c	io: preserve ipv4/ipv6 flags when resolving InetSocketAddress	2017-07-14 14:28:29 +01:00
Makefile.objs	io: introduce a network socket listener API	2017-12-15 15:07:26 +00:00
net-listener.c	io: fix QIONetListener memory leak	2018-02-15 16:54:57 +00:00
task.c	io: fix possible double free of task error object	2017-01-26 10:26:18 +00:00
trace-events	io: add trace points for websocket HTTP protocol headers	2017-10-16 16:57:08 +01:00