fixeria submitted this change.

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s1ap_proxy: handle_ies(): also handle #'ProtocolExtensionField'

This patch prepares for a follow-up change adding E-RAB MODIFY REQ/RSP,
allowing to execute handle_ies() on a list of #'ProtocolExtensionField'.

* 9.1.3.3 E-RAB MODIFY REQUEST
** contains an E-RABToBeModifiedListBearerModReq IE
*** contains E-RABToBeModifiedItemBearerModReq IEs
**** each may optionally contain TransportInformation IE
                                 ^^^^^^^^^^^^^^^^^^^^^^^
                                 #'ProtocolExtensionField'

Change-Id: Ic1ed2c4662e82bd739c35f9179eaaec20c3cad98
---
M src/s1ap_proxy.erl
1 file changed, 8 insertions(+), 0 deletions(-)

diff --git a/src/s1ap_proxy.erl b/src/s1ap_proxy.erl
index 18b054b..3414e79 100644
--- a/src/s1ap_proxy.erl
+++ b/src/s1ap_proxy.erl
@@ -592,6 +592,14 @@
                 {{error, Reason}, S1} ->
                     {{error, Reason}, S1}
             end;
+        #'ProtocolExtensionField'{id = IEI, extensionValue = C0} ->
+            case handle_ie(P, C0, S0) of
+                {{ok, C1}, S1} ->
+                    NewIE = IE#'ProtocolExtensionField'{extensionValue = C1},
+                    handle_ies([NewIE | Acc], IEI, IEs, S1);
+                {{error, Reason}, S1} ->
+                    {{error, Reason}, S1}
+            end;
         #'ProtocolIE-Field'{id = ?'id-MME-UE-S1AP-ID', value = Id} ->
             S1 = S0#proxy_state{mme_ue_id = Id},
             handle_ies([IE | Acc], IEI, IEs, S1);

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