/// <summary>
/// Allows explicitly requesting channel to connect without starting an RPC.
/// Returned task completes once state Ready was seen. If the deadline is reached,
/// or channel enters the FatalFailure state, the task is cancelled.
/// There is no need to call this explicitly unless your use case requires that.
/// Starting an RPC on a new channel will request connection implicitly.
/// </summary>
public async Task ConnectAsync(DateTime?deadline = null)
{
var currentState = handle.CheckConnectivityState(true);
while (currentState != ChannelState.Ready)
{
if (currentState == ChannelState.FatalFailure)
{
throw new OperationCanceledException("Channel has reached FatalFailure state.");
}
await WaitForStateChangedAsync(currentState, deadline);
currentState = handle.CheckConnectivityState(false);
}
}
private ChannelState GetConnectivityState(bool tryToConnect)
{
try
{
return(handle.CheckConnectivityState(tryToConnect));
}
catch (ObjectDisposedException)
{
return(ChannelState.Shutdown);
}
}