概括
我有一个 UCWA 应用程序，我希望它接受传入的 onlineMeetingInvitation 事件，然后监视所有消息。虽然我已经能够成功接受邀请，但我没有收到任何消息的事件。我相信这可能是因为默认情况下未连接消息传递模式，所以我正在尝试addMessaging。不幸的是，这个请求总是返回一个 409 错误和消息，
发生冲突，导致操作无法启动。请稍后再试。
有谁知道，一个。如果尝试添加消息是正确的？湾。为什么我收到上述错误？
细节
我设置了两个正常的 Lync 客户端进行对话。然后我邀请我的 UCWA 应用程序的用户加入对话。这会在我的事件频道上产生以下响应，（包括预期的接受链接）
{
"_links": {
"self": {
"href": "/ucwa/oauth/v1/applications/102547331865/events?ack=28"
},
"next": {
"href": "/ucwa/oauth/v1/applications/102547331865/events?ack=29"
}
},
"sender": [
{
"rel": "me",
"href": "/ucwa/oauth/v1/applications/102547331865/me",
"events": [
{
"link": {
"rel": "presence",
"href": "/ucwa/oauth/v1/applications/102547331865/me/presence"
},
"type": "updated"
}
]
},
{
"rel": "communication",
"href": "/ucwa/oauth/v1/applications/102547331865/communication",
"events": [
{
"link": {
"rel": "onlineMeetingInvitation",
"href": "/ucwa/oauth/v1/applications/102547331865/communication/onlineMeetingInvitations/6cb18668cbda428e839652ae1f6cd58f"
},
"_embedded": {
"onlineMeetingInvitation": {
"direction": "Incoming",
"importance": "Normal",
"threadId": "AdIw2sMaOjuEJHfcRJiiK5Czug+5Ug==",
"state": "Connecting",
"subject": "",
"onlineMeetingUri": "sip:test.user2@xxx.xxx.xx;gruu;opaque=app:conf:focus:id:KS77KG4B",
"availableModalities": [
"Messaging"
],
"_links": {
"self": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/onlineMeetingInvitations/6cb18668cbda428e839652ae1f6cd58f"
},
"to": {
"href": "/ucwa/oauth/v1/applications/102547331865/people/test.user1@xxx.xxx.xx"
},
"conversation": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/conversations/3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d"
},
"accept": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/onlineMeetingInvitations/6cb18668cbda428e839652ae1f6cd58f/accept"
},
"decline": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/onlineMeetingInvitations/6cb18668cbda428e839652ae1f6cd58f/decline"
}
},
"_embedded": {
"from": { ....我在“接受”href 上执行 POST，它成功响应但没有内容。然后我收到 2 个事件响应，其中第二个包括以下内容
...
{
"rel": "communication",
"href": "/ucwa/oauth/v1/applications/102547331865/communication",
"events": [
{
"link": {
"rel": "conversation",
"href": "/ucwa/oauth/v1/applications/102547331865/communication/conversations/3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d"
},
"_embedded": {
"conversation": {
"state": "Conferenced",
"threadId": "AdIw2sMaOjuEJHfcRJiiK5Czug+5Ug==",
"subject": "",
"activeModalities": [
"Messaging"
],
"importance": "Normal",
"participantCount": 3,
"audienceMute": "Disabled",
"audienceMessaging": "Enabled",
"recording": false,
"_links": {
"self": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/conversations/3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d"
},
"applicationSharing": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/conversations/3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d/applicationSharing"
},
"audioVideo": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/conversations/3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d/audioVideo"
},
"dataCollaboration": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/conversations/3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d/dataCollaboration"
},
"messaging": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/conversations/3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d/messaging"
},
"phoneAudio": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/conversations/3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d/phoneAudio"
},
"localParticipant": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/conversations/3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d/participants/test.user1@xxx.xxx.xx",
"title": "Test User1"
},
"addParticipant": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/participantInvitations?conversation=3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d"
},
"leaders": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/conversations/3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d/participants?filter=leaders"
},
"attendees": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/conversations/3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d/participants?filter=attendees"
},
"lobby": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/conversations/3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d/participants?filter=lobby"
},
"onlineMeeting": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/conversations/3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d/onlineMeeting"
},
"enableAudienceMuteLock": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/conversations/3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d/enableAudienceMuteLock"
},
"disableAudienceMessaging": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/conversations/3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d/disableAudienceMessaging"
}
},
"rel": "conversation"
}
},
"type": "updated"
}
]
},
...
{
"link": {
"rel": "messaging",
"href": "/ucwa/oauth/v1/applications/102547331865/communication/conversations/3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d/messaging"
},
"_embedded": {
"messaging": {
"state": "Disconnected",
"_links": {
"self": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/conversations/3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d/messaging"
},
"conversation": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/conversations/3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d"
},
"addMessaging": {
"href": "/ucwa/oauth/v1/applications/102547331865/communication/messagingInvitations?conversation=3b80d6be-b57c-4cc1-b10d-cd5c89ffa09d"
}
},
"rel": "messaging"
}
},
"type": "updated"
},
...同样，我相信这符合预期，此时原始 Lync 客户端按预期显示 3 个参与者。
接下来，我尝试对上述代码段中的 addMessaging href 进行 POST。POST 没有正文。
URI : https://xxx.xxx.xx/ucwa/oauth/v1/applications/102547331865/communication/messagingInvitations?conversation=0ae942e4-9133-4888-a0fb-8a7b182fff00
Method : POST
Headers : {Accept=[text/plain, application/json, application/*+json, */*], Content-Length=[0]}
Request body:结果是 409 冲突，我在任何时候都不会收到两个 Lync 客户端添加到对话中的新消息的事件。
Header {Cache-Control=[no-cache], Pragma=[no-cache], Via=[1.1 DEVLYNC2.xxx.xxx.xx RtcInt], Content-Length=[120], Content-Type=[application/json], Expires=[-1], Server=[Microsoft-IIS/7.5], X-MS-Server-Fqdn=[DEVLYNC2.xxx.xx.xx], X-AspNet-Version=[4.0.30319], Strict-Transport-Security=[max-age=31536000; includeSubDomains], X-Powered-By=[ASP.NET], Date=[Fri, 28 Oct 2016 07:31:51 GMT]}
Body {"code":"Conflict","message":"There was a conflict that prevented the operation from starting. Please try again later."}