tree 4f9b04720f1374ad425c78865043fe8e7e8a6a92
parent 243cab35e3b13d29ea693eec0aff31a3bb9b30a9
author Jeremy Kerr <jk@ozlabs.org> 1484632205 +0800
committer Jeremy Kerr <jk@ozlabs.org> 1484815311 +0800

socket-handler: don't disconnect on slow client writes

If a socket client is slow to receive data from the console server, we
start filling a buffer. Currently, if we have more data to send and the
buffer is full, we disconnect the client.

Instead, this change will start performing blocking writes to the client
if the buffer becomes full. This means we'll rate-limit the console data
(including reads from the tty device) instead of disconnecting. This
gives us a little flow control of tty data.

Fixes openbmc/obmc-console#9 .

Change-Id: Icf8ff7246f9ba776ff6fd76a25156ddd89d271d9
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>