Date: Fri, 06 Dec 2019 22:31:25 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 242492] TCP fat open observability Message-ID: <bug-242492-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D242492 Bug ID: 242492 Summary: TCP fat open observability Product: Base System Version: 12.1-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: j2465@wizmail.org A TCP connection made by sendto() with TCP_FASTOPEN set always sets the TCP_FASTOPEN readback getsockopt. It would be (possibly more) useful to the client application to know if a supposedly valid TFO cookie was sent on the= SYN (as opposed to the current possibilty of only having sent a TFO request) an= d/or whether the server agreed that the cookie was acceptable. TCP_INFO TCPOPT_FAST_OPEN appears to match getsockopt/TCP_FASTOPEN, for a client. I'm not sure that we really want to go so far as knowing whether client data-on-SYN was actually accepted with the SYN, but it's another item in the bucket. --=20 You are receiving this mail because: You are the assignee for the bug.=
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