Re: SIP API spec

Craig Partridge <craig@aland.bbn.com> Tue, 26 January 1993 17:48 UTC

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To: Steve Deering <deering@parc.xerox.com>
Cc: ip-encaps@sunroof.eng.sun.com, sip@caldera.usc.edu
Subject: Re: SIP API spec
In-Reply-To: Your message of Tue, 26 Jan 93 09:30:35 -0800. <93Jan26.093049pst.12171@skylark.parc.xerox.com>
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From: Craig Partridge <craig@aland.bbn.com>
Date: Tue, 26 Jan 93 09:39:40 -0800
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> I can certainly imagine UDP-based applications, such as vat and nv, wanting
> to set the Flow ID in their outgoing packets.

Steve:
    
    Good point.  Thanks.

    It raised a question in my mind.

    What happens if two different applications try to use the same Flow ID?
    If we use well-known Flow IDs (say, "this is telnet") then presumably
    this is OK.  But for specially negotiated flows, presumably the flow ID
    is unique (or is it?).

    In other words, will setsockopt() of the FLOW ID ever return EADDRINUSE?

    If we have well-known flow ids, does this mean that calls to use them
    need to be privileged?
    
Thanks!

Craig