Techniques of video update on a client based on browser status

1. A method of operating a computer system, the computer system including a baseboard management controller (BMC) of a host and a device, comprising:

redirecting, at the BMC, images from the host to the device for displaying at a web browser of the device;

receiving, at the device, a redirected image from the BMC;

processing, at the device, the redirected image and displaying the redirected image at the web browser;

determining, at the device, that the web browser at the device is out of focus or is minimized;

generating, at the device, an indication that the web browser at the device is out of focus or is minimized;

sending, at the device, a frame control message including the indication to the BMC through the web browser;

receiving, at the BMC, the frame control message including the indication from the device;

stopping, at the BMC, redirecting the images from the BMC to the device in response to the indication;

receiving, at the BMC, another frame control message from the device, the another frame control message including another indication that the web browser is in focus; and

resuming, at the BMC, redirecting the images to the web browser in response to the another indication.

2. The method of claim 1 , wherein the web browser is an HTML 5 browser.

3. The method of claim 1 , wherein the stopping redirecting includes

stopping generating redirected images for the device or stopping sending the redirected images to the device.

4. The method of claim 1 , wherein the stopping redirecting includes

determining that the images from the host is not redirected to any other device; and

stopping capturing subsequent images from the host.

5. The method of claim 1 , further comprising:

redirecting the images from the host to one or more other devices; and

continuing the redirection to the one or more other devices when the redirection to the device is stopped.

6. A computer system, comprising:

a device, including

a second memory; and

second at least one processor coupled to the second memory and configured to:

receive, at the device, a redirected image from the BMC;

process, at the device, the redirected image and displaying the redirected image at the web browser;

determine, at the device, that the web browser at the device is out of focus or is minimized;

generate, at the device, an indication that the web browser at the device is out of focus or is minimized;

send, at the device, a frame control message including the indication to the BMC through the web browser; and

a baseboard management controller (BMC) of a host, including

a first memory; and

first at least one processor coupled to the first memory and configured to:

redirect, at the BMC, images from the host to a device for displaying at a web browser;

receive, at the BMC, the frame control message including the indication from the device;

stop, at the BMC, redirecting the images from the BMC to the device in response to the indication;

receive, at the BMC, another frame control message from the device, the another frame control message including another indication that the web browser is in focus; and

resume, at the BMC, redirecting the images to the web browser in response to the another indication.

7. The computer system of claim 6 , wherein the web browser is an HTML 5 browser.

8. The computer system of claim 6 , wherein to stop redirecting, the first at least one processor is further configured to:

stop generating redirected images for the device or stopping sending the redirected images to the device.

9. The computer system of claim 6 , wherein to stopping redirecting, the first at least one processor is further configured to:

determine that the images from the host is not redirected to any other device; and

stop capturing subsequent images from the host.

10. The computer system of claim 6 , wherein the first at least one processor is further configured to:

redirect the images from the host to one or more other devices; and

continue the redirection to the one or more other devices when the redirection to the device is stopped.

11. A non-transitory computer-readable medium storing computer executable code for operating a computer system, the computer system including a baseboard management controller (BMC) of a host and a device, comprising code to:

redirect, at the BMC, images from the host to the device for displaying at a web browser;

receive, at the device, a redirected image from the BMC;

process, at the device, the redirected image and displaying the redirected image at the web browser;

determining, at the device, that the web browser at the device is out of focus or is minimized;

generating, at the device, an indication that the web browser at the device is out of focus or is minimized;

sending, at the device, a frame control message including the indication to the BMC through the web browser;

receive, at the BMC, the frame control message including the indication from the device;

stop, at the BMC, redirecting the images from the BMC to the device in response to the indication;

receive, at the BMC, another frame control message from the device, the another frame control message including another indication that the web browser is in focus; and

resume, at the BMC, redirecting the images to the web browser in response to the another indication.

12. The non-transitory computer-readable medium of claim 11 , wherein the web browser is an HTML 5 browser.