Date: Thu, 9 Jul 1998 12:16:25 -0500 From: Jonathan Lemon <jlemon@americantv.com> To: zhihuizhang <bf20761@binghamton.edu> Cc: hackers <freebsd-hackers@FreeBSD.ORG> Subject: Re: Multi-threaded and TCP/IP window size Message-ID: <19980709121625.29898@right.PCS> In-Reply-To: <Pine.SOL.L3.93.980709094537.16513A-100000@bingsun1>; from zhihuizhang on Jul 07, 1998 at 10:06:17AM -0400 References: <Pine.SOL.L3.93.980709094537.16513A-100000@bingsun1>
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On Jul 07, 1998 at 10:06:17AM -0400, zhihuizhang wrote: > (2) A friend has a special application requirement in which two machines > are communicating with each other with TCP/IP. If the receiver send a > packet with window size of *zero*, it expects the sender to send one byte > a time immediately. He tested other Unix systems (Linux, SunOS, AIX) and > found that in these Unix systems, the sender keeps sending a lot of data > *for a while* before sending one byte a time (kind of probing). What he > wants is an instantanous response form the sender. Later when the receiver > sends a packet saying the window size is now, say, 3000 bytes, the sender > should be able to come to data rate *immediately*. Can this be (or > already have been) done by FreeBSD? This wouldn't be a mobile-tcpip link, would it, now? I don't know if it has been done specifically for FBSD, but it sounds suspiciously like some of the experimental mobile TCP/IP stack modifications, to get around the normal congestion control mechanisms. -- Jonathan To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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