Windows Time Server Receive-Instantiation Procedure

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The receive-instantiation procedure is called from the receive procedure when a new peer is discovered. It initializes the peer variables and mobilizes the association. If the message is from a peer operating in client mode (3), the host mode is set to server mode (4); otherwise, it is set to symmetric passive mode (2). The authentication variables are used only if the authentication mechanism described in Appendix C is implemented. If implemented, only properly authenticated non-configured peers can become the synchronization source.


begin receive-instantiation procedure

       #ifdef (authentication implemented)                    /* see Appendix C */

               peer.authenable <-- 0;

               peer.authentic <-- 0;

               peer.hostkeyid <-- as required;

               peer.peerkeyid <-- 0;


       peer.config <-- 0;                                           /* copy variables */

       peer.peeraddr <-- pkt.peeraddr;

       peer.peerport <-- pkt.peerport;

       peer.hostaddr <-- roman pkt.hostaddr;

       hostport <-- pkt.hostport;

       if (pkt.mode = 3)                                              /* determine mode */

               peer.mode <-- 4;


               peer.mode <-- 2;

       peer.peerpoll <-- 0 (undefined);

       peer.timer <-- 0;

       peer.delay  <-- 0 (undefined);

       peer.offset <--0 (undefined);

       call clear;                                                            /* initialize association */

end receive-instantiation procedure;


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