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I get this error ALL THE TIME: "An active connection is required to perform the build"

SleimanZublidi.MSSleimanZublidi.MS CAMember ✭✭
in Visual Studio

ALL THE TIME, even when I'm already connected to the MAC.

The only way to fix it is to close VS and open again. I have to do this after 3 to 4 launches of the app I'm debugging.

>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\iOS\Xamarin.Messaging.targets(41,3): warning : An error occured on client build7296slzub while executing a post for topic xma/clients
>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\iOS\Xamarin.Messaging.targets(41,3): warning : The operation has timed out.
>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\iOS\Xamarin.Messaging.targets(41,3): warning :    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\iOS\Xamarin.Messaging.targets(41,3): warning :    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\iOS\Xamarin.Messaging.targets(41,3): warning :    at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\iOS\Xamarin.Messaging.targets(41,3): warning :    at Xamarin.Messaging.Client.MessagingClient.<PostAsync>d__23`2.MoveNext() in E:\A\_work\6\s\External\messaging\src\Xamarin.Messaging.Client\MessagingClient.cs:line 164
>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\iOS\Xamarin.Messaging.targets(41,3): warning : An error occured on client build7296slzub while executing a post for topic xma/clients
>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\iOS\Xamarin.Messaging.targets(41,3): error : Unable to connect to Mac Server with Address='xxx' and User='xxx'. An active connection is required to perform the build

Posts

  • PierceBogganPierceBoggan USForum Administrator, Xamarin Team, Developer Group Leader Xamurai

    Hi @SleimanZublidi.MS,

    Could you please attach your logs by going to Help > Xamarin > Zip Logs?

    Thanks,
    Pierce

  • SleimanZublidi.MSSleimanZublidi.MS CAMember ✭✭

    @PierceBoggan

    When I click the Pair window, it shows it's connected. I try to run and I get the error.

    1>  Connecting to Mac server SLZUBLID-MBP...
1>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\iOS\Xamarin.Messaging.targets(41,3): warning : Only one usage of each socket address (protocol/network address/port) is normally permitted
1>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\iOS\Xamarin.Messaging.targets(41,3): error : Unable to connect to Mac Server with Address='SLZUBLID-MBP' and User='slzublid'. An active connection is required to perform the build

    I have to disconnect, wait, connect, than I can run. It happens multiple times a day.

  • PierceBogganPierceBoggan USForum Administrator, Xamarin Team, Developer Group Leader Xamurai

    Thanks! I'll have the team take a look.

  • SleimanZublidi.MSSleimanZublidi.MS CAMember ✭✭

    When I click the Pair window, it shows connected

    1> Connecting to Mac server SLZUBLID-MBP...
    1>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\iOS\Xamarin.Messaging.targets(41,3): warning : Only one usage of each socket address (protocol/network address/port) is normally permitted
    1>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\iOS\Xamarin.Messaging.targets(41,3): error : Unable to connect to Mac Server with Address='SLZUBLID-MBP' and User='slzublid'. An active connection is required to perform the build
    2> Connecting to Mac server SLZUBLID-MBP...

    From the log:

    System.Net.Mqtt.Sdk.MqttClientFactory|Error|0|An error occurred while initializing a client
    System.Net.Mqtt.MqttException: An error occurred while connecting via TCP to the endpoint address SLZUBLID-MBP and port 52304, to establish an MQTT connection ---> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it 10.161.168.200:52304

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