Date: Tue, 13 Mar 2001 16:43:26 -0800 From: Lars Eggert <larse@ISI.EDU> To: net@FreeBSD.org Subject: Changing UDP select() behavior Message-ID: <3AAEBEAE.F823CB8E@isi.edu>
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[-- Attachment #1 --] Hi, I'm wondering if anyone has ever considered modifying the UDP behavior with regard to selecting: Currently, writing to a UDP socket either enqueues packets in the interface queue (returning success), or drops them on the floor (returning ENOBUFS) if the queue is full. Selecting-to-write on a UDP socket always succeeds, never blocks. I'm considering changing this, so that a select-to-write on a UDP socket will block until queue space becomes available. (I don't think this would violate UDP semantics, but is a big enough change to warrant a new sockopt to enable it.) Has this been considered/implemented in any OS? Does anyone see any serious problems with it? Feedback greatly appreciated! Lars -- Lars Eggert <larse@isi.edu> Information Sciences Institute http://www.isi.edu/larse/ University of Southern California [-- Attachment #2 --] 0# *H 01 0 + 0 *H 00A#0 *H 01 0 UZA10U Western Cape10U Durbanville10 U Thawte1 0U Certificate Services1(0&U Personal Freemail RSA 1999.9.160 000824203008Z 010824203008Z0T10 UEggert1 0 U*Lars10U Lars Eggert1 0 *H larse@isi.edu00 *H 0 \p9 H;v r∩6"C?mxfJ f7I[3CF́L I - zHRVA怤2]0-bL)%X>nӅ w0u0*+e!0 00L2uMyffBNUbNJJcdZ2s0U 0 larse@isi.edu0 U 0 0 U #0`fUXF a#Ì0 *H _3 F=%nWY-HXD9UOc6ܰw f@uܶNԄR?Pr} E1֮23 mFhySwM_h|d yR= $P 00} 0 *H 01 0 UZA10U Western Cape10U Cape Town10U Thawte Consulting1(0&U Certification Services Division1$0"UThawte Personal Freemail CA1+0) *H personal-freemail@thawte.com0 990916140140Z 010915140140Z01 0 UZA10U Western Cape10U Durbanville10 U Thawte1 0U Certificate Services1(0&U Personal Freemail RSA 1999.9.1600 *H 0 iZ z]!#rLK~r$BRW{azr98e^eyvL>hpu t ,O 1ArƦ]D.Mօ>lx~@эWs0FO 7050U 0 0 U #0rIs4U vr~wƲ0 *H kY1rr`HU{gapm¥7؝(V\uoƑlfq|ko!6- -mƃRt\~ orzg,ks n Νc) ~U10001 0 UZA10U Western Cape10U Durbanville10 U Thawte1 0U Certificate Services1(0&U Personal Freemail RSA 1999.9.16#0 + 0 *H 1 *H 0 *H 1 010314004329Z0# *H 1w }32ǰ3t)}!;0R *H 1E0C0 *H 0*H 0+0 *H @0 *H (0 *H z8lox|!w,I8vLeNn}_ &l.4I`[82N3!4g$%4;4Rf oT$}XlTQފo.[C@@+J9hCq]
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