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Network Working Group                        11 June 1971Request for Comments: 175                    E. Harslem - RandNIC 7074                                     J. Heafner - Rand             Comments on "Socket Conventions Reconsidered"             ---------------------------------------------        We agree with the conclusions reached by Abhay, Bob, and Joel in   RFC #167, "Socket Conventions Reconsidered," (see RFC #129, scheme #4)   -- especially the necessity for a major NCP overhaul.        Our main departure in thinking from RFC #167 concerns the socket   length. (See RFC #164, page 21.)  Since there is an apparently serious   TIP storage consideration, Rand- assigned sockets will have the   high-order 16 bits zero.        For the particular programs (current and pending) that Rand must   access, repeatability of socket name (RFC #167, page 3) is not   necessary for the user process and also not necessary for the server   process except for initial contact (ICP) sockets.   Our current use of socket names is diagrammed below.    O           15 16             23 24          30 31    ---------------------------------------------------   |              |                 |              |   |    ---------------------------------------------------     ^              ^                 ^              ^     |_ zero        |                 |              |_ gender                    |                 |                    |                 |_ zero for initial                    |                    contact, otherwise                    |                    dynamically assigned                    |                    by 3rd level user                    |                    program                    |_ administratively assigned (fixed                       and associated with programs)   (NOTE: This scheme corresponds exactly with both UCSB and UCLA/CCN   conventions).       [ This RFC was put into machine readable form for entry ]       [ into the online RFC archives by BBN Corp. under the   ]       [ direction of Alex McKenzie.                   12/96   ]                                                                [Page 1]