/// <summary>
/// Starts a runner instance
/// </summary>
/// <returns>The awaitable task.</returns>
/// <param name="domain">The AppDomain to use.</param>
/// <param name="config">The server configuration.</param>
/// <param name="usessl">If set to <c>true</c> use ssl.</param>
/// <param name="port">The port to listen on.</param>
private async Task StartRunnerAsync(System.AppDomain domain, ServerConfig config, bool usessl, string address, int port)
{
var enabled = !string.IsNullOrWhiteSpace(address);
// Ensure it parses
ParseUtil.ParseEndPoint(address, port);
var prev = m_handlers.Where(x => x.UseSSL == usessl).FirstOrDefault();
if (enabled)
{
var addcrashhandler = true;
var wrapper = new AppDomainWrapper(domain);
wrapper.SetupFromFile(usessl, m_path, config.Storage);
if (prev == null)
{
prev = new RunnerInstance(wrapper, address, port, usessl, config);
m_handlers.Add(prev);
}
else
{
if (prev.RunnerTask.IsFaulted || prev.RunnerTask.IsCanceled || prev.RunnerTask.IsCompleted)
{
var cur = new RunnerInstance(wrapper, address, port, usessl, config);
m_handlers.Remove(prev);
m_handlers.Add(cur);
prev = cur;
}
else if (prev.Port != port || !string.Equals(prev.Address, address, StringComparison.Ordinal))
{
// Address or port change, start new listener first
var cur = new RunnerInstance(wrapper, address, port, usessl, config);
if (!prev.RunnerTask.IsFaulted)
{
await prev.StopAsync();
}
m_handlers.Remove(prev);
m_handlers.Add(cur);
prev = cur;
}
else if (prev.Config.SocketBacklog != config.SocketBacklog)
{
await prev.RestartAsync(wrapper, address, port, usessl, config);
}
else
{
addcrashhandler = false; // We already have it
prev.Wrapper = wrapper; // Assign the new wrapper
}
}
if (addcrashhandler)
{
var dummy = prev.RunnerTask.ContinueWith(x =>
{
if (!prev.ShouldStop && InstanceCrashed != null)
{
InstanceCrashed(address, usessl, x.IsFaulted ? x.Exception : new Exception("Unexpected stop"));
}
});
}
}
else if (prev != null)
{
await prev.StopAsync();
m_handlers.Remove(prev);
}
}