Don't send updates for screen areas which are outside the clients desktop. May happed with vnc clients which don't support the desktop resize message.
Signed-off-by: Gerd Hoffmann <kra...@redhat.com> --- vnc.c | 8 ++++++-- 1 files changed, 6 insertions(+), 2 deletions(-) diff --git a/vnc.c b/vnc.c index 30e0bed..119ffe8 100644 --- a/vnc.c +++ b/vnc.c @@ -836,6 +836,7 @@ static int vnc_update_client(VncState *vs, int has_dirty) int y; int n_rectangles; int saved_offset; + int width, height; if (vs->output.offset && !vs->audio_cap && !vs->force_update) /* kernel send buffers are full -> drop frames to throttle */ @@ -856,10 +857,13 @@ static int vnc_update_client(VncState *vs, int has_dirty) saved_offset = vs->output.offset; vnc_write_u16(vs, 0); - for (y = 0; y < vd->server->height; y++) { + width = MIN(vd->server->width, vs->client_width); + height = MIN(vd->server->height, vs->client_height); + + for (y = 0; y < height; y++) { int x; int last_x = -1; - for (x = 0; x < vd->server->width / 16; x++) { + for (x = 0; x < width / 16; x++) { if (vnc_get_bit(vs->dirty[y], x)) { if (last_x == -1) { last_x = x; -- 1.6.6.1