pespin submitted this change.

Approvals:
  laforge: Looks good to me, but someone else must approve
  Jenkins Builder: Verified
  fixeria: Looks good to me, approved

pfcp_peer: Retry PFCP assiciation towards UPF instead of exiting

Otherwise the osmo-s1gw program stops if the UPF is not available at the
time.

Change-Id: Ic17c1c7210ab4ae0ddc840a5ffd13b7cdda243c9
---
M src/pfcp_peer.erl
1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/pfcp_peer.erl b/src/pfcp_peer.erl
index dc36c1f..ba8f8a9 100644
--- a/src/pfcp_peer.erl
+++ b/src/pfcp_peer.erl
@@ -155,12 +155,13 @@
     ?LOG_INFO("State change: ~p -> ~p", [OldState, ?FUNCTION_NAME]),
     %% Tx PFCP Association Setup
     {ok, S1} = send_assoc_setup(S0),
-    {next_state, connecting, S1,
-     [{state_timeout, 2_000, assoc_setup_timeout}]};
+    {keep_state, S1, [{state_timeout, 2_000, assoc_setup_timeout}]};
 
 %% Handle Association Setup timeout
-connecting(state_timeout, assoc_setup_timeout, _S) ->
-    {stop, {shutdown, assoc_setup_timeout}};
+connecting(state_timeout, assoc_setup_timeout, S) ->
+    % Re-start sending PFCP Association Setup above:
+    ?LOG_NOTICE("PFCP Association Setup timeout, UPF may be down, retrying..."),
+    {repeat_state, S};
 
 %% Handle incoming PFCP PDU(s)
 connecting(info, {udp, Sock, _FromIp, _FromPort, Data},

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