我不太可能还在为最初的问题而苦苦挣扎。我一直在检查 Bartek 给我的暗示。不幸的是，文档很差，可能我没有完全理解它。
无论如何，我将分享我处理 dar 属性文件的结果。
定义取自 SipServlet Specification v1.1
ROUTE 修饰符表示 SipApplicationRouterInfo.getRoutes() 返回有效路由。由容器决定它们是外部路由还是返回内部路由。返回的所有路由必须是相同类型，因此容器可以通过仅检查第一个路由来做出决定。
2017-10-10 15:55:01,372 ERROR [SipApplicationDispatcherImpl] (pool-AffinityJAIN-thread-1) Unexpected exception while processing request
INVITE sip:test2@mydomain.net SIP/2.0
Via: SIP/2.0/TCP 10.39.117.121:50302;rport=50302;branch=z9hG4bKPj921L-Q-IghWuH.rSX.uNoNMh9T7gZilB;received=10.39.117.121
Via: SIP/2.0/TCP 10.39.117.93:6560;received=10.39.117.93;branch=z9hG4bK+aa78dad05a4a559d9e4635f37906172a1+sip+5+a64ded2b
Route: <sip:moby@moby.dev.mydomain.sys;lr>
Route: <sip:odi_6fWaVvB68v@10.39.117.121:5054;lr;orig>
Record-Route: <sip:sprout.dev.mydomain.sys:5054;transport=TCP;lr;service=scscf;billing-role=charge-orig>
Record-Route: <sip:10.39.117.93:6560;lr>
From: "itsme" <sip:test_1@mydomain.net>;tag=10.39.117.93+5+2cdeefc2+8fc7709c
To: <sip:test2@mydomain.net>
CSeq: 1 INVITE
Expires: 180
Call-Info: <sip:10.39.117.93:6560>;method="NOTIFY;Event=telephone-event;Duration=2000"
P-Charging-Function-Addresses: ccf=pri_ccf_address
Supported: outbound,path,replaces
P-Charging-Vector: icid-value="0be3bd9333dd5089baf80bf17225e3d6";orig-ioi=mydomain.net
Contact: <sip:test_1@195.130.246.72:46973;transport=tcp;rinstance=e637627c20b12d87;ob>;+sip.instance="<urn:uuid:968fdfa1-95d3-59cb-acb3-403d721daeee>"
P-Asserted-Identity: <sip:test_1@mydomain.net>
Max-Forwards: 68
Call-ID: 0gQAAC8WAAACBAAALxYAAOYHyDdZmVO7ntMtj/uEnAYHN75Z51iTlNo7aI6WHcJ6VqorSJqCC0eLxClj9KOJnw--@10.39.117.93
Allow: SUBSCRIBE,NOTIFY,INVITE,ACK,CANCEL,BYE,REFER,INFO,OPTIONS
User-Agent: X-Lite release 5.0.1 stamp 86895
P-Visited-Network-ID: perim.dev.ims.ext1.net
Accept: application/sdp,application/dtmf-relay
Session-Expires: 600
P-Served-User: <sip:test_1@mydomain.net>;regstate=reg;sescase=orig
Content-Type: application/sdp
Content-Length: 281
v=0
o=- 14048926850737 14048926850737 IN IP4 10.39.117.93
s=-
c=IN IP4 10.39.117.93
t=0 0
m=audio 45234 RTP/AVP 120 0 101
a=sendrecv
a=rtpmap:120 opus/48000/2
a=rtpmap:101 telephone-event/8000
a=fmtp:120 useinbandfec=1; usedtx=1; maxaveragebitrate=64000
a=fmtp:101 0-15
org.mobicents.servlet.sip.core.DispatcherException: Impossible to parse the route returned by the application router into a compliant address
at org.mobicents.servlet.sip.core.dispatchers.InitialRequestDispatcher.checkRouteModifier(InitialRequestDispatcher.java:575)
at org.mobicents.servlet.sip.core.dispatchers.InitialRequestDispatcher.dispatchMessage(InitialRequestDispatcher.java:299)
at org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl.processRequest(SipApplicationDispatcherImpl.java:927)
at gov.nist.javax.sip.EventScanner.deliverRequestEvent(EventScanner.java:250)
at gov.nist.javax.sip.EventScanner.deliverEvent(EventScanner.java:146)
at gov.nist.javax.sip.SipProviderImpl.handleEvent(SipProviderImpl.java:185)
at gov.nist.javax.sip.DialogFilter.processRequest(DialogFilter.java:1328)
at gov.nist.javax.sip.stack.SIPServerTransactionImpl.processRequest(SIPServerTransactionImpl.java:851)
at gov.nist.javax.sip.stack.ConnectionOrientedMessageChannel.processMessage(ConnectionOrientedMessageChannel.java:473)
at gov.nist.javax.sip.parser.NioPipelineParser$Dispatch.run(NioPipelineParser.java:132)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at gov.nist.javax.sip.MDCScheduledTHExecutor$MDCFuture.run(MDCScheduledTHExecutor.java:57)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.text.ParseException: :Bad address spec
at gov.nist.javax.sip.parser.Parser.createParseException(Parser.java:45)
at gov.nist.javax.sip.parser.AddressParser.address(AddressParser.java:120)
at gov.nist.javax.sip.parser.StringMsgParser.parseAddress(StringMsgParser.java:328)
at gov.nist.javax.sip.address.AddressFactoryImpl.createAddress(AddressFactoryImpl.java:124)
at org.mobicents.servlet.sip.core.dispatchers.InitialRequestDispatcher.checkRouteModifier(InitialRequestDispatcher.java:537)
... 17 more
我还尝试使用路由字段指向 IMS 节点，以便转发回 SIP 消息。它可以工作，但我认为这样 AS 不会添加到 Record-Route 标头中，并且会导致循环。
ROUTE_BACK 指示容器在推送从 SipApplicationRouterInfo.getRoutes() 获得的外部路由之前先推送自己的路由。
应用程序路由器行为
在这种情况下，我有以下错误，AS 的答案是 500。
2017-10-10 15:52:57,276 ERROR [SipApplicationDispatcherImpl] (pool-AffinityJAIN-thread-14) Unexpected exception while processing request
INVITE sip:test2@mydomain.net SIP/2.0
Via: SIP/2.0/TCP 10.39.117.121:43312;rport=43312;branch=z9hG4bKPj5IBDrImFUbO1J.J1LrwUcUQ-rsT28TRh;received=10.39.117.121
Via: SIP/2.0/TCP 10.39.117.93:6560;received=10.39.117.93;branch=z9hG4bK+84bf75e3c2c4ccae314be5e5849bd4961+sip+3+a64ded21
Route: <sip:moby@moby.dev.mydomain.sys;lr>
Route: <sip:odi_kMFF/TQSEV@10.39.117.121:5054;lr;orig>
Record-Route: <sip:sprout.dev.mydomain.sys:5054;transport=TCP;lr;service=scscf;billing-role=charge-orig>
Record-Route: <sip:10.39.117.93:6560;lr>
From: "Gennaro" <sip:test_1@mydomain.net>;tag=10.39.117.93+3+7334eef2+84ee6a06
To: <sip:test2@mydomain.net>
CSeq: 1 INVITE
Expires: 180
Call-Info: <sip:10.39.117.93:6560>;method="NOTIFY;Event=telephone-event;Duration=2000"
P-Charging-Function-Addresses: ccf=pri_ccf_address
Supported: outbound,path,replaces
P-Charging-Vector: icid-value="4167d34dd3fb232bb1f5fcf458dc1a9e";orig-ioi=mydomain.net
Contact: <sip:test_1@195.130.246.72:46973;transport=tcp;rinstance=e637627c20b12d87;ob>;+sip.instance="<urn:uuid:968fdfa1-95d3-59cb-acb3-403d721daeee>"
P-Asserted-Identity: <sip:test_1@mydomain.net>
Max-Forwards: 68
Call-ID: 0gQAAC8WAAACBAAALxYAAK2OW7qCKhw2LAbw9q+UyCfK2Js5PtCkUUpQsljED2+H/KOnkWSV97W3n9Uqpa3r4w--@10.39.117.93
Allow: SUBSCRIBE,NOTIFY,INVITE,ACK,CANCEL,BYE,REFER,INFO,OPTIONS
User-Agent: X-Lite release 5.0.1 stamp 86895
P-Visited-Network-ID: perim.dev.ims.ext1.net
Accept: application/sdp,application/dtmf-relay
Session-Expires: 600
P-Served-User: <sip:test_1@mydomain.net>;regstate=reg;sescase=orig
Content-Type: application/sdp
Content-Length: 281
v=0
o=- 76884298267467 76884298267467 IN IP4 10.39.117.93
s=-
c=IN IP4 10.39.117.93
t=0 0
m=audio 45230 RTP/AVP 120 0 101
a=sendrecv
a=rtpmap:120 opus/48000/2
a=rtpmap:101 telephone-event/8000
a=fmtp:120 useinbandfec=1; usedtx=1; maxaveragebitrate=64000
a=fmtp:101 0-15
java.lang.IllegalArgumentException: not allowed to set parameter, the URI is not modifiable
at org.mobicents.servlet.sip.address.SipURIImpl.setParameter(SipURIImpl.java:401)
at org.mobicents.servlet.sip.core.dispatchers.InitialRequestDispatcher.checkRouteModifier(InitialRequestDispatcher.java:591)
at org.mobicents.servlet.sip.core.dispatchers.InitialRequestDispatcher.dispatchMessage(InitialRequestDispatcher.java:299)
at org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl.processRequest(SipApplicationDispatcherImpl.java:927)
at gov.nist.javax.sip.EventScanner.deliverRequestEvent(EventScanner.java:250)
at gov.nist.javax.sip.EventScanner.deliverEvent(EventScanner.java:146)
at gov.nist.javax.sip.SipProviderImpl.handleEvent(SipProviderImpl.java:185)
at gov.nist.javax.sip.DialogFilter.processRequest(DialogFilter.java:1328)
at gov.nist.javax.sip.stack.SIPServerTransactionImpl.processRequest(SIPServerTransactionImpl.java:851)
at gov.nist.javax.sip.stack.ConnectionOrientedMessageChannel.processMessage(ConnectionOrientedMessageChannel.java:473)
at gov.nist.javax.sip.parser.NioPipelineParser$Dispatch.run(NioPipelineParser.java:132)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at gov.nist.javax.sip.MDCScheduledTHExecutor$MDCFuture.run(MDCScheduledTHExecutor.java:57)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
NO_ROUTE 表示应用路由器没有返回任何路由，并且 SipApplicationRouterInfo.getRoutes() 值（如果有）应该被忽略。
在这种情况下，请求似乎停留在 AS 中，无法将请求转发到 IMS 节点。
希望这能说明情况。
谢谢