Date: Thu, 29 Mar 2001 13:52:15 -0600 From: "Jim King" <jim@jimking.net> To: "Paul Marquis" <pmarquis@pobox.com> Cc: "Nate Williams" <nate@yogotech.com>, "Brian Matthews" <blm@actzero.com>, "Allen Landsidel" <all@biosys.net>, <freebsd-stable@FreeBSD.ORG> Subject: Re: Threads vs. blocking sockets Message-ID: <00f201c0b889$c4ff4d30$524c8486@jking> References: <F0D64494733BD411BB9A00D0B74A0264021C9E@cpe-24-221-167-196.ca.sprintbbd.net> <15043.35980.669828.971544@nomad.yogotech.com> <00dd01c0b886$d8510250$524c8486@jking> <3AC390FD.6C03BF8F@pobox.com>
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None of the documented values for errno as set by send(2) indicate "only part of the data was sent", at least by my reading. Which value of errno indicates that I need to resend part of the data? How do I tell how many bytes were sent? Still sounds broken to me. Jim "Paul Marquis" <pmarquis@pobox.com> wrote: > Under the manual entry for send(2), the RETURN VALUES section states: > > The call returns the number of characters sent, or -1 if an > error occured. > > So if you request to send 100 bytes, the OS may only be able to sent > half those and you need to check how many you sent an resend the part > that wasn't sent. > > Nate is right. > > Jim King wrote: > > Nate Williams wrote: > > > Again, all threading libraries I've used (not just on FreeBSD) *require* > > > the user to check that when sending/receiving data, the caller must make > > > sure that all the expected data has been sent/received. > > > > The man page for send(2) doesn't mention this. It sounds broken to me. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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