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  1. C# Driver
  2. CSHARP-2852

DnsClient.DnsResponseException: Unhandled exception when using mongodb+srv://

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    • Type: Icon: Bug Bug
    • Resolution: Duplicate
    • Priority: Icon: Major - P3 Major - P3
    • None
    • Affects Version/s: 2.9.2
    • Component/s: Connectivity
    • None
    • Environment:
      docker on ubuntu linux in azure.

      I cannot connect to mongoDB atlas using an srv record. I am using a peered connection in azure. The host machine itself can resolve the SRV record. I tested it using this command on my ubuntu sever.

      host -t srv _mongodb._tcp.xxxxxxxxx.azure.mongodb.net

      An example of my connnection string: mongodb+srv://<username>:<password>@xxxxxxxxx.azure.mongodb.net/test. 

      I am using .net core 3. The base container of my docker container is mcr.microsoft.com/dotnet/core/aspnet:3.0-alpine3.9 .

      Here's the exception i get:

       

      Unhandled exception. DnsClient.DnsResponseException: Unhandled exception
2019-11-12T09:46:08.645385629Z ---> System.InvalidOperationException: Record reader index out of sync.
2019-11-12T09:46:08.645410429Z at DnsClient.DnsRecordFactory.GetRecord(ResourceRecordInfo info)
2019-11-12T09:46:08.645418229Z at DnsClient.DnsMessageHandler.GetResponseMessage(ArraySegment`1 responseData)
2019-11-12T09:46:08.645438129Z at DnsClient.DnsUdpMessageHandler.Query(IPEndPoint server, DnsRequestMessage request, TimeSpan timeout)
2019-11-12T09:46:08.645443729Z at DnsClient.LookupClient.ResolveQuery(IReadOnlyCollection`1 servers, DnsMessageHandler handler, DnsRequestMessage request, Boolean useCache, LookupClientAudit continueAudit)
2019-11-12T09:46:08.645449029Z --- End of inner exception stack trace ---
2019-11-12T09:46:08.645453629Z at DnsClient.LookupClient.ResolveQuery(IReadOnlyCollection`1 servers, DnsMessageHandler handler, DnsRequestMessage request, Boolean useCache, LookupClientAudit continueAudit)
2019-11-12T09:46:08.645458929Z at DnsClient.LookupClient.QueryInternal(IReadOnlyCollection`1 servers, DnsQuestion question, Boolean useCache)
2019-11-12T09:46:08.645463929Z at DnsClient.LookupClient.Query(String query, QueryType queryType, QueryClass queryClass)
2019-11-12T09:46:08.645468929Z at MongoDB.Driver.Core.Configuration.ConnectionString.Resolve(Boolean resolveHosts)
2019-11-12T09:46:08.645473530Z at MongoDB.Driver.MongoUrl.Resolve(Boolean resolveHosts)
2019-11-12T09:46:08.645478430Z at MongoDB.Driver.MongoClientSettings.FromUrl(MongoUrl url)

       

      When using an oldschool connection string (not depending on an srv record) I can connect to my cluster.

            Assignee:
            dmitry.lukyanov@mongodb.com Dmitry Lukyanov (Inactive)
            Reporter:
            support@sea-invest.com Brecht Vanhaesebrouck
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              Created:
              Updated:
              Resolved: