SACKs are the second most important/useful TCP extension after window scaling. SACKs have had basically universal support for more than a decade (like, 95% of the traffic on the public internet negotiated SACKs in 2012). Anyone writing a new production TCP stack without SACKs is basically committing malpractice.
SACKs are the second most important/useful TCP extension after window scaling. SACKs have had basically universal support for more than a decade (like, 95% of the traffic on the public internet negotiated SACKs in 2012). Anyone writing a new production TCP stack without SACKs is basically committing malpractice.