/// <summary>
/// This function can be called twice.
///
/// First time, it simply check connectivity with a short timeout.
/// If it does not connect, there are two possibilities.
/// 1) Firewall was just enabled, let's check for longer time.
/// 2) Remote powershell is disabled on target machine etc.
///
/// Since we are not clear which is the case, we return null. It will then show
/// the dialog UI to ask user to choose if he wants to retry testing connectivity.
///
/// If the user choose yes for retry, this method is called the second time.
/// The second time, we keep testing connectivity with a longer period of time.
///
/// Both times,
/// if remote powershell can be connected, go to install, start remote debugger step.
///
/// If it is determined it won't connect successfully,
/// go to a help page with a link to our documentation.
/// </summary>
protected override async Task <IAttachDebuggerStep> GetNextStepAsync()
{
SetStage(Stage.CheckingConnectivity);
var port = Context.RemotePowerShellPort;
int waitTime = port.WaitForFirewallRuleTimeInSeconds();
bool connected = waitTime > 0 && _askedToCheckConnectivityLater ?
// This is the second time, check connectivity with a longer wait time.
await ConnectivityTestUntillTimeoutAsync(waitTime) :
// This is the first time, we don't check "waitTime", test connectivity anyhow.
await port.ConnectivityTestAsync(CancelToken);
if (connected)
{
return(InstallStartRemoteToolStepViewModel.CreateStep(Context));
}
// else: not connected
// If this is first time call, then check if firewall was just enabled.
if (!_askedToCheckConnectivityLater && port.WaitForFirewallRuleTimeInSeconds() > 0)
{
SetStage(Stage.AskToCheckConnectivityLater);
_askedToCheckConnectivityLater = true;
return(null);
}
else
{
return(HelpStepViewModel.CreateStep(Context));
}
}
/// <summary>
/// Creates the step that installs and starts debugger remote tool.
/// </summary>
public static InstallStartRemoteToolStepViewModel CreateStep(AttachDebuggerContext context)
{
var content = new InstallStartRemoteToolStepContent();
var step = new InstallStartRemoteToolStepViewModel(content, context);
content.DataContext = step;
return(step);
}
