Go

Understanding Async Function Return Values

See more Async Examples

Explains how to get the return value of the function called synchonously in the background thread. Go

    success := false

    // Some Chilkat functions can be called asynchronously.
    // If a function "Func" can be called asynchronously, there will be a corresponding "FuncAsync" function that returns a Task object.
    // 
    // When Task.Run is called, the synchronous "Func" runs in a background thread.
    // 

    // For Chilkat methods that return a status (true/false), get returned value by calling GetResultBool.
    // For example..

    sock := chilkat.NewSocket()

    // --------------------------------------------------------------
    // Synchronous call returning true/false
    success = sock.Connect("example.com",443,true,5000)

    // --------------------------------------------------------------
    // Asynchronous call
    c := make(chan *chilkat.Task)
    go sock.ConnectAsync("example.com",443,true,5000,c)
    task := <-c
    // ...

    // ...
    // ...
    // Get the status (true/false) value returned by the synchronous method called in the background thread.
    success = task.GetResultBool()

    // --------------------------------------------------------------
    // Synchronous call returning an integer
    count := sock.ReceiveCount()

    // --------------------------------------------------------------
    // Asynchronous call
    c := make(chan *chilkat.Task)
    go sock.ReceiveCountAsync(    task := <-c
    // ...

    // ...
    // ...
    // Get the integer value returned by the synchronous method called in the background thread.
    count = task.GetResultInt()

    // --------------------------------------------------------------
    // Synchronous call returning an string
    s := sock.ReceiveString()

    // --------------------------------------------------------------
    // Asynchronous call
    c := make(chan *chilkat.Task)
    go sock.ReceiveStringAsync(    task := <-c
    // ...

    // ...
    // ...
    // Get the string value returned by the synchronous method called in the background thread.
    s = task.GetResultString()

    // --------------------------------------------------------------
    // Synchronous call returning an object
    connection := sock.AcceptNextConnection(5000)

    // --------------------------------------------------------------
    // Asynchronous call
    c := make(chan *chilkat.Task)
    go sock.AcceptNextConnectionAsync(    task := <-c
    // ...

    // ...
    // ...
    // Get the object returned by the synchronous method called in the background thread.
    // We do this a little differently.  We create an new object of the same type,
    // and then load it with the returned object (assuming it was not null).
    acceptedConnection := chilkat.NewSocket()
    if task.TaskSuccess() == true {
        success = acceptedConnection.LoadTaskResult(task)
    }


    sock.DisposeSocket()
    task.DisposeTask()
    task.DisposeTask()
    task.DisposeTask()
    task.DisposeTask()
    acceptedConnection.DisposeSocket()