#/usr/bin/pic2plot -Tps # # Run as pic filename | groff | ps2eps # # DNS query collaboration diagram # # $Id: dnsq.pic 1.4 2004/04/06 08:08:24 dds Exp $ # .PS copy "sequence.pic"; boxwid = 1.3; # Define the objects object(B,":Web Browser"); object(W,":Workstation Kernel"); object(S,":Server Kernel"); object(D,":DNS Server"); step(); # Message sequences active(B); active(D); active(W); active(S); message(D,S,"select"); inactive(D); message(B,W,"socket"); message(B,W,"connect"); message(B,W,"sendto"); message(W,W,"send packet"); message(W,S,"DNS A query"); message(B,W,"recvfrom"); inactive(B); message(S,S,"receive packet"); rmessage(S,D,"select returns"); active(D); message(D,S,"recvfrom"); message(D,S,"sendto"); message(S,S,"send packet"); message(S,W,"DNS A reply"); message(W,W,"receive packet"); rmessage(W,B,"recvfrom returns"); active(B); message(B,W,"close"); complete(B); complete(W); complete(S); complete(D); .PE
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