(C) MS Teamwork: Create an Online Meeting

See more Microsoft Teams Examples

Demonstrates how to create a Microsoft Teamwork Online Meeting

Note:If using Application access (i.e. client credentials) which is what this example is doing, then you'll need to "Configure application access to online meetings or virtual events" See https://learn.microsoft.com/en-us/graph/cloud-communication-online-meeting-application-access-policy#configure-application-access-policy

For example, here's our Powershell session to setup the policy.

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PS C:\WINDOWS\system32> Install-Module -Name PowerShellGet -Force -AllowClobber
PS C:\WINDOWS\system32> Install-Module -Name MicrosoftTeams -Force -AllowClobber
PS C:\WINDOWS\system32> Connect-MicrosoftTeams

Account              Environment Tenant                               TenantId
-------              ----------- ------                               --------
admin@chilkat365.com AzureCloud  112d7ed6-71bf-4eba-a866-738364321bfc 112d7ed6-71bf-4eba-a866-738364321bfc

PS C:\WINDOWS\system32> New-CsApplicationAccessPolicy -Identity Test-Teams-policy -AppIds "e1cd2318-298b-4916-bfd6-78cae9938835" -Description "Want App to be able to work with Teams for a User"

Identity    : Tag:Test-Teams-policy
AppIds      : {e1cd2318-298b-4916-bfd6-78cae9938835}
Description : Want App to be able to work with Teams for a User

PS C:\WINDOWS\system32> Grant-CsApplicationAccessPolicy -PolicyName Test-Teams-policy -Identity "4ee732c3-322e-4a6b-b729-2fd1eb5c6004"
PS C:\WINDOWS\system32>

Note: This example uses the new "Integrated OAuth2 Client Credentials" feature introduced in Chilkat v9.5.0.96.

For more information, see https://learn.microsoft.com/en-us/graph/api/application-post-onlinemeetings?view=graph-rest-1.0&tabs=http#request-body

Chilkat C/C++ Library Downloads
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#include <C_CkHttp.h>
#include <C_CkJsonObject.h>
#include <C_CkHttpResponse.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkHttp http;
    HCkJsonObject jsonOAuthCC;
    HCkJsonObject json;
    HCkHttpResponse resp;
    HCkJsonObject jsonResp;
    int statusCode;

    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    http = CkHttp_Create();

    // Provide the information needed for Chilkat to automatically fetch the OAuth2.0 
    // access token as needed.
    // This is the new "Integrated OAuth2 Client Credentials" feature introduced in Chilkat v9.5.0.96.  
    jsonOAuthCC = CkJsonObject_Create();

    // --------------------------------------------------------------------------------------------------------
    // You'll need to have registered an app in Azure beforehand.
    // 
    // Note: Creating an online meeting requires the following Application permission:  OnlineMeetings.ReadWrite.All
    // 
    // See How to Create an Azure App Registration for OAuth 2.0 Client Credentials
    // --------------------------------------------------------------------------------------------------------

    // Use the values from your App Registration in Azure.
    CkJsonObject_UpdateString(jsonOAuthCC,"client_id","e1cd2318-xxxx-4916-bfd6-xxxxxxxxxxxx");
    CkJsonObject_UpdateString(jsonOAuthCC,"client_secret","K.d8Q~RoJxxxxvCj_u_xxxxxxxxxxxxxxxxxxxxx");

    // You'll always use this scope for client credentials, because the allowed actions
    // are determined by the App Permissions defined when you registered the app in Azure.
    CkJsonObject_UpdateString(jsonOAuthCC,"scope","https://graph.microsoft.com/.default");

    // The token endpoint includes your tenant ID.  Use your tenant ID (not the tenant ID shown here).
    CkJsonObject_UpdateString(jsonOAuthCC,"token_endpoint","https://login.microsoftonline.com/112d7ed6-71bf-4eba-a866-738364321bfc/oauth2/v2.0/token");

    // Provide the OAuth2 information. Chilkat will use this information to automatically fetch the OAuth2 access token as needed,
    CkHttp_putAuthToken(http,CkJsonObject_emit(jsonOAuthCC));

    // -------------------------------------------------------------------------------------------
    // The following JSON is sent in the request body.

    // {
    //   "startDateTime": "2023-12-12T14:30:34-07:00",
    //   "endDateTime": "2023-12-12T15:00:34-07:00",
    //   "subject": "User Token Meeting"
    // }

    json = CkJsonObject_Create();
    CkJsonObject_UpdateString(json,"startDateTime","2023-12-12T14:30:34-07:00");
    CkJsonObject_UpdateString(json,"endDateTime","2023-12-12T15:00:34-07:00");
    CkJsonObject_UpdateString(json,"subject","User Token Meeting");

    CkHttp_SetRequestHeader(http,"Content-Type","application/json");

    // The user ID is 4ee732c3-322e-4a6b-b729-2fd1eb5c6004
    // You will need to change the ID to your user's ID.
    resp = CkHttp_PostJson3(http,"https://graph.microsoft.com/v1.0/users/4ee732c3-322e-4a6b-b729-2fd1eb5c6004/onlineMeetings","application/json",json);
    if (CkHttp_getLastMethodSuccess(http) == FALSE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkHttp_Dispose(http);
        CkJsonObject_Dispose(jsonOAuthCC);
        CkJsonObject_Dispose(json);
        return;
    }

    // ----------------------------------------------------------------------------------------
    // IMPORTANT: 

    // If using Application access, you will get the following error unless you configure your application
    // to manage online meetings on behalf of the user.  (Note that the user ID is in the URL shown above.)
    // See  https://learn.microsoft.com/en-us/graph/cloud-communication-online-meeting-application-access-policy#allow-applications-to-access-online-meetings-on-behalf-of-a-user 
    // 
    // {
    //   "error": {
    //     "code": "General",
    //     "message": "No application access policy found for this app.",
    //     "innerError": {
    //       "request-id": "1c9bd09a-a089-4afd-add4-eec2334135c8",
    //       "date": "2023-11-17T16:26:53",
    //       "client-request-id": "1c9bd09a-a089-4afd-add4-eec2334135c8"
    //     }
    //   }
    // }
    // ----------------------------------------------------------------------------------------

    jsonResp = CkJsonObject_Create();
    CkJsonObject_Load(jsonResp,CkHttpResponse_bodyStr(resp));
    CkJsonObject_putEmitCompact(jsonResp,FALSE);
    printf("%s\n",CkJsonObject_emit(jsonResp));

    statusCode = CkHttpResponse_getStatusCode(resp);
    printf("response status code = %d\n",statusCode);

    CkHttpResponse_Dispose(resp);

    if (statusCode != 201) {
        printf("Failed.\n");
        CkHttp_Dispose(http);
        CkJsonObject_Dispose(jsonOAuthCC);
        CkJsonObject_Dispose(json);
        CkJsonObject_Dispose(jsonResp);
        return;
    }

    // Here is a sample response:

    // Use the following online tool to generate parsing code from sample JSON: 
    // Generate Parsing Code from JSON

    // {
    //   "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('4ee732c3-322e-4a6b-b729-2fd1eb5c6004')/onlineMeetings/$entity",
    //   "id": "MSo0ZWU3MzJjMy0zMjJlLTRhNmItYjcyOS0yZmQxZWI1YzYwMDQqMCoqMTk6bWVldGluZ19ZemswWXpOaU9XTXRaV0l5TUMwME5EY3dMVGt4Tm1VdFlUSXpOMlF3WTJKbE9HWm1AdGhyZWFkLnYy",
    //   "creationDateTime": "2023-11-17T17:00:45.1935677Z",
    //   "startDateTime": "2023-12-12T21:30:34Z",
    //   "endDateTime": "2023-12-12T22:00:34Z",
    //   "joinUrl": "https://teams.microsoft.com/l/meetup-join/19%3ameeting_Yzk0YzNiOWMtZWIyMC00NDcwLTkxNmUtYTIzN2QwY2JlOGZm%40thread.v2/0?context=%7b%22Tid%22%3a%22112d7ed6-71bf-4eba-a866-738364321bfc%22%2c%22Oid%22%3a%224ee732c3-322e-4a6b-b729-2fd1eb5c6004%22%7d",
    //   "meetingCode": "238818764794",
    //   "isBroadcast": false,
    //   "autoAdmittedUsers": "everyoneInCompany",
    //   "outerMeetingAutoAdmittedUsers": null,
    //   "capabilities": [
    //   ],
    //   "externalId": null,
    //   "iCalUid": null,
    //   "meetingType": null,
    //   "meetingMigrationMode": null,
    //   "joinWebUrl": "https://teams.microsoft.com/l/meetup-join/19%3ameeting_Yzk0YzNiOWMtZWIyMC00NDcwLTkxNmUtYTIzN2QwY2JlOGZm%40thread.v2/0?context=%7b%22Tid%22%3a%22112d7ed6-71bf-4eba-a866-738364321bfc%22%2c%22Oid%22%3a%224ee732c3-322e-4a6b-b729-2fd1eb5c6004%22%7d",
    //   "subject": "User Token Meeting",
    //   "videoTeleconferenceId": null,
    //   "isEntryExitAnnounced": true,
    //   "allowedPresenters": "everyone",
    //   "allowAttendeeToEnableMic": true,
    //   "allowAttendeeToEnableCamera": true,
    //   "allowMeetingChat": "enabled",
    //   "shareMeetingChatHistoryDefault": "none",
    //   "allowTeamworkReactions": true,
    //   "anonymizeIdentityForRoles": [
    //   ],
    //   "recordAutomatically": false,
    //   "allowParticipantsToChangeName": false,
    //   "allowTranscription": true,
    //   "allowRecording": true,
    //   "broadcastSettings": null,
    //   "meetingInfo": null,
    //   "audioConferencing": null,
    //   "watermarkProtection": null,
    //   "chatRestrictions": null,
    //   "participants": {
    //     "organizer": {
    //       "upn": "admin@chilkat365.com",
    //       "role": "presenter",
    //       "identity": {
    //         "application": null,
    //         "device": null,
    //         "user": {
    //           "id": "4ee732c3-322e-4a6b-b729-2fd1eb5c6004",
    //           "displayName": null,
    //           "tenantId": "112d7ed6-71bf-4eba-a866-738364321bfc",
    //           "identityProvider": "AAD"
    //         }
    //       }
    //     },
    //     "attendees": [
    //     ]
    //   },
    //   "chatInfo": {
    //     "threadId": "19:meeting_Yzk0YzNiOWMtZWIyMC00NDcwLTkxNmUtYTIzN2QwY2JlOGZm@thread.v2",
    //     "messageId": "0",
    //     "replyChainMessageId": null
    //   },
    //   "joinInformation": {
    //     "content": "data:text/html,%3cdiv+style%3d%22width%3a .... %2fdiv%3e",
    //     "contentType": "html"
    //   },
    //   "joinMeetingIdSettings": {
    //     "isPasscodeRequired": false,
    //     "joinMeetingId": "238818764794",
    //     "passcode": null
    //   },
    //   "lobbyBypassSettings": {
    //     "scope": "organization",
    //     "isDialInBypassEnabled": false
    //   }
    // }

    // Use the following online tool to generate parsing code from sample JSON: 
    // Generate Parsing Code from JSON

    printf("Success.\n");


    CkHttp_Dispose(http);
    CkJsonObject_Dispose(jsonOAuthCC);
    CkJsonObject_Dispose(json);
    CkJsonObject_Dispose(jsonResp);

    }