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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!news.rmit.EDU.AU!goanna.cs.rmit.edu.au!news.apana.org.au!cantor.edge.net.au!news.teragen.com.au!news.access.net.au!news.mel.connect.com.au!munnari.OZ.AU!news.ecn.uoknor.edu!news.wildstar.net!newsfeed.direct.ca!mr.net!xfer.kren.nm.kr!newsfeed.kreonet.re.kr!news.imnet.ad.jp!netnews.lab.kdd.co.jp!oribe!usenet From: miyake@parma.hsc.lab.kdd.co.jp Newsgroups: comp.unix.bsd.freebsd.misc Subject: Problem with window scale option for TCP Date: 07 Mar 1997 19:08:08 +0900 Organization: KDD R & D Laboratories, Saitama, JAPAN. Lines: 17 Message-ID: <reendsm2uv.fsf@parma.hsc.lab.kdd.co.jp> NNTP-Posting-Host: parma.hsc.lab.kdd.co.jp X-Newsreader: Gnus v5.3/Emacs 19.34 Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:36740 I have problem about TCP for FreeBSD. FreeBSD's TCP has window scale option (rfc1323), but total window size is always restricted under 64K bytes. For example, I set the socket buffer size 120K bytes using setsockopt(). In this case, value of window scale option will be 1, and WINDOW field in TCP header should be 60K bytes for empty receive buffer. However, WINDOW field in TCP header is always 32K bytes, so advertised window size is 64K bytes, not 120K bytes. NetBSD-1.2 does not have this problem. Is there any method to resolve this problem? -- Yutaka Miyake (miyake@lab.kdd.co.jp) KDD R&D Laboratories.