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digraph G {
rankdir=TB
labelloc=t; label="PFCP UP peer FSM\nUser Plane side, managing association with remote CP peer"
txrx [label="PFCP socket",shape="box"]
txrx -> NOT_ASSOCIATED [label="rx PFCP msg from\nnew remote IP"]
txrx -> NOT_ASSOCIATED [label="EV_RX_ASSOC_SETUP_REQ",style=dotted]
NOT_ASSOCIATED -> ASSOCIATED [label="Assoc Setup Req",shape="box"]
heartbeat [label="PFCP heartbeat FSM",shape=box3d]
ASSOCIATED -> heartbeat [label="alloc()",style=dotted]
heartbeat -> ASSOCIATED [label="EV_HEARTBEAT_FAILURE",style=dotted]
txrx -> ASSOCIATED [label="EV_RX_SESSION_EST_REQ",style=dotted]
up_session [label="PFCP UP session FSM",shape=box3d]
ASSOCIATED -> up_session [label="up_session_create()",style=dotted]
txrx -> ASSOCIATED [label="EV_RX_ASSOC_UPD_REQ",style=dotted]
ASSOCIATED -> GRACEFUL_RELEASE [label="Association Update\nindicating graceful release"]
ASSOCIATED -> term [label="Heartbeat failure"]
GRACEFUL_RELEASE -> term
term [shape="octagon"]
}
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