private async Task <IWatcherCheckResult> EnsureAsync(ConnectionInfo connectionInfo)
{
var isValid = true;
var portSpecified = _configuration.Port > 0;
if (_configuration.EnsureThatAsync != null)
{
isValid = await _configuration.EnsureThatAsync?.Invoke(connectionInfo);
}
isValid = isValid && (_configuration.EnsureThat?.Invoke(connectionInfo) ?? true);
return(ServerWatcherCheckResult.Create(this, isValid, connectionInfo,
$"Successfully connected to the hostname '{_configuration.Hostname}' " +
$"{(portSpecified ? $"using port: {_configuration.Port}" : string.Empty)}."));
}
private async Task <IWatcherCheckResult> ExecuteCheckAsync()
{
using (var servicesProvider = GetServicesProviders())
{
var ipStatusAndAddressAndOpenedPort = await TryConnectAsync(servicesProvider);
var ipStatus = ipStatusAndAddressAndOpenedPort.Item1;
var ipAddress = ipStatusAndAddressAndOpenedPort.Item2;
var portOpened = ipStatusAndAddressAndOpenedPort.Item3;
var ipStatusMessage = _pingStatusMessages[ipStatus];
var portSpecified = _configuration.Port > 0;
var connectionInfo = ConnectionInfo.Create(_configuration.Hostname,
ipAddress, _configuration.Port, portOpened, ipStatus, ipStatusMessage);
if (ipStatus == IPStatus.Unknown)
{
return(ServerWatcherCheckResult.Create(this, false, connectionInfo,
$"Could not resolve the hostname '{_configuration.Hostname}' " +
$"{(portSpecified ? $"using port: {_configuration.Port}" : string.Empty)}. " +
$"Ping status: '{ipStatusMessage}'"));
}
if (ipStatus != IPStatus.Success)
{
return(ServerWatcherCheckResult.Create(this, false, connectionInfo,
$"Unable to connect to the hostname '{_configuration.Hostname}' " +
$"{(portSpecified ? $"using port: {_configuration.Port}" : string.Empty)}. " +
$"Ping status: '{ipStatusMessage}'"));
}
if (portSpecified && !portOpened)
{
return(ServerWatcherCheckResult.Create(this, false, connectionInfo,
$"Unable to connect to the hostname '{_configuration.Hostname}' " +
$"using port: {_configuration.Port}. " +
$"Ping status: '{ipStatusMessage}'"));
}
return(await EnsureAsync(connectionInfo));
}
}
public async Task <IWatcherCheckResult> ExecuteAsync()
{
try
{
return(await ExecuteCheckAsync());
}
catch (TaskCanceledException exception)
{
var connectionInfo = ConnectionInfo.Create(_configuration.Hostname,
IPAddress.None, _configuration.Port, false, IPStatus.Unknown, string.Empty);
return(ServerWatcherCheckResult.Create(this, false, connectionInfo,
"A connection timeout has occurred while trying to access the hostname: " +
$"'{_configuration.Hostname}' using port: {_configuration.Port}."));
}
catch (Exception exception)
{
throw new WatcherException("There was an error while trying to access the hostname: " +
$"'{_configuration.Hostname}' using port: {_configuration.Port}.",
exception);
}
}