clientinvitesession.dot

这是国外的resip协议栈

digraph ClientInviteSession {
	node [ fonstsize=8 fontname="VeraSans-Roman" ]
	graph
	[
//		ranksep=1.5 // modify to shrink nodes etc
//		nodesep=1.5
		fontsize=8
		fontname="VeraSans-Roman"
		labelfontsize=8
		labelfontname="VeraSans-Roman"
	]

	edge
	[
		fontname="VeraSans-Roman"	
		fontsize=8
		arrowhead=normal
	]

// Now setup labels and visual stuff.

        fontname="VeraSans-Roman"

        Start -> Proceeding
                [ label="100/create timer" ]
        Start -> Early
                [ label="1XX/create timer" ]
        Early -> Early
              [ label="1XX/ create timer" ]
        Proceeding -> Early
                   [ label="1XX/update timer" ]
        Start -> Terminated
                 [ label="Failure Response" ]

        Proceeding -> Terminated
                   [ label="Failure Response" ]
          
          Proceeding -> Connected [ label="2XX/ACK" ]
          Proceeding -> Canceled [ label="CANCEL" ]
          Canceled -> Canceled [ label="CANCEL, Fail" ]
          Early -> Canceled [ label="CANCEL" ]
          Early -> Connected [ label="2XX/ACK" ]
          Connected -> Terminated [ label="BYE" ]
          Early -> Terminated [ label="Failure Response" ]
          Start -> Connected [ label="2XX/ACK" ]
          Canceled -> Terminated [ label="200/BYE\n*/nothing"]
}