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獵戶座不能夠到達天鵝座，並給出以下警告（我已經隱藏IP的）：獵戶座不會通知天鵝（超時錯誤）出現
[email protected]:33:21 AlarmManager.cpp[303]: Raising alarm NotificationError Y.Y.Y.Y:5050/notify: (curl_easy_perform failed: Timeout was reached)
我首先創建一個實體，然後做訂閱，並隨後更新實體。有關信息，這裏是從contextBroker啓動的整個調試日誌記錄：
[email protected]:31:51 contextBroker.cpp[1808]: Startup completed
[email protected]:32:51 connectionOperations.cpp[626]: Database Operation Successful (command: { listDatabases: 1 })
[email protected]:32:51 connectionOperations.cpp[79]: Database Operation Successful (query: { conditions.type: "ONCHANGE" })
[email protected]:33:16 logMsg.h[1803]: Starting transaction from X.X.X.X:45738/v1/updateContext
[email protected]:33:16 connectionOperations.cpp[79]: Database Operation Successful (query: { _id.id: "1", _id.type: "auto", _id.servicePath: /^\/$/ })
[email protected]:33:16 connectionOperations.cpp[401]: Database Operation Successful (update: <{ _id.id: "1", _id.type: "auto", _id.servicePath: /\// }, { $set: { attrs.kenteken: { value: "TEST", type: "string", creDate: 1457009737, modDate: 1457011996 }, modDate: 1457011996 }, $unset: { location: 1 } }>)
[email protected]:33:16 logMsg.h[1803]: Starting transaction to Y.Y.Y.Y:5050/notify
[email protected]:33:16 logMsg.h[1887]: Transaction ended
[email protected]:33:20 logMsg.h[1803]: Starting transaction from X.X.X.X:45738/v1/subscribeContext
[email protected]:33:20 connectionOperations.cpp[153]: Database Operation Successful (query: { query: { $or: [ { _id.id: "1", _id.type: "auto" } ], _id.servicePath: { $in: [ null, /^$/, /^/.*/ ] }, attrNames: { $in: [ "kenteken", "timestamp" ] } }, orderby: { creDate: 1 } })
[email protected]:33:20 connectionOperations.cpp[153]: Database Operation Successful (query: { query: { $or: [ { _id.id: "1", _id.type: "auto" } ], _id.servicePath: { $in: [ null, /^$/, /^/.*/ ] } }, orderby: { creDate: 1 } })
[email protected]:33:20 logMsg.h[1803]: Starting transaction to Y.Y.Y.Y:5050/notify
[email protected]:33:20 connectionOperations.cpp[336]: Database Operation Successful (insert: { _id: ObjectId('56d83d2070c15b679240ebd6'), expiration: 1459604000, reference: "http://Y.Y.Y.Y:5050/notify", throttling: 1, servicePath: "/#", entities: [ { id: "1", type: "auto", isPattern: "false" } ], attrs: [ "kenteken", "timestamp" ], conditions: [ { type: "ONCHANGE", value: [ "kenteken" ] } ], expression: { q: "", geometry: "", coords: "", georel: "" }, lastNotification: 1457012000, count: 1, format: "JSON" })
[email protected]:33:20 logMsg.h[1887]: Transaction ended
[email protected]:33:21 AlarmManager.cpp[303]: Raising alarm NotificationError Y.Y.Y.Y:5050/notify: (curl_easy_perform failed: Timeout was reached)
[email protected]:33:21 logMsg.h[1887]: Transaction ended
[email protected]:33:25 logMsg.h[1887]: Transaction ended
[email protected]:33:32 logMsg.h[1803]: Starting transaction from X.X.X.X:45738/v1/updateContext
[email protected]:33:32 connectionOperations.cpp[79]: Database Operation Successful (query: { _id.id: "1", _id.type: "auto", _id.servicePath: /^\/$/ })
[email protected]:33:32 connectionOperations.cpp[401]: Database Operation Successful (update: <{ _id.id: "1", _id.type: "auto", _id.servicePath: /\// }, { $set: { attrs.kenteken: { value: "93XBV4", type: "string", creDate: 1457009737, modDate: 1457012012 }, modDate: 1457012012 }, $unset: { location: 1 } }>)
[email protected]:33:32 logMsg.h[1803]: Starting transaction to Y.Y.Y.Y:5050/notify
[email protected]:33:32 logMsg.h[1887]: Transaction ended
[email protected]:33:32 logMsg.h[1803]: Starting transaction to Y.Y.Y.Y:5050/notify
[email protected]:33:37 logMsg.h[1887]: Transaction ended
什麼可能是超時的原因？
N.B .:我可以看到在MongoDB（Orion的dbhost）中創建的實體，因此認爲請求是正確的。官方文件使用相同格式的事實證實了這一點。 Cygnus也根據官方文檔進行配置，並且似乎按照它的工作方式工作（記錄中沒有錯誤，只是沒有接收來自Orion的數據）。
是安全組的Y.Y.Y.Y VM的端口5050打開？該虛擬機中運行的防火牆是否阻止了該流量（通常，您可以執行快速測試，運行'iptables -F'來清除所有防火牆規則）？ – fgalan