tree 1fb3cc438d32109d13149cd04f1adfbae7f99cca
parent d4091b0ce472cb5b47a2b2c84f239a31068935c2
author Jiwoong Lee <porce@google.com> 1544258091 -0800
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1544598410 +0000

[bootserver] Show progress even for slow link

The current logic of the progress update is not friendly
to slow or faulty links.

The bootserver progress will be updated if any of following
conditions is met:
 - The first packet is transferred
 - One second or more passed since the last update
 - 1024 or more packets sent since the last update
 - 0.1% or more transfer is done since the last update
 - The last packet is transferred since the last update

Test: Each condition is emulated in a local setup. Confirmed the progress.
Change-Id: I3d65a39cd57e48c7516ae5ddb7d99a605350eb3c