/// <inheritdoc/>
public override async Task <IFtpResponse> Process(FtpCommand command, CancellationToken cancellationToken)
{
try
{
var address = Address.Parse(command.Argument);
if (address == null)
{
return(new FtpResponse(501, T("Syntax error in parameters or arguments.")));
}
var feature = await _dataConnectionFeatureFactory.CreateFeatureAsync(command, address, _options.DataPort)
.ConfigureAwait(false);
var oldFeature = Connection.Features.Get <IFtpDataConnectionFeature>();
try
{
oldFeature.Dispose();
}
catch
{
// Ignore dispose errors!
}
Connection.Features.Set(feature);
}
catch (NotSupportedException ex)
{
return(new FtpResponse(522, T("Extended port failure - {0}.", ex.Message)));
}
return(new FtpResponse(200, T("Command okay.")));
}
/// <inheritdoc/>
public override async Task <IFtpResponse?> Process(FtpCommand command, CancellationToken cancellationToken)
{
if (Connection.Features.Get <IFtpDataConnectionConfigurationFeature>()?.LimitToEpsv ?? false)
{
// EPSV ALL was sent from the client
return(new FtpResponse(
500,
$"Cannot use {command.Name} when EPSV ALL was used before."));
}
try
{
var connectionFeature = Connection.Features.Get <IConnectionFeature>();
var address = Parse(command.Argument, connectionFeature.RemoteEndPoint);
if (address == null)
{
return(new FtpResponse(501, T("Syntax error in parameters or arguments.")));
}
var feature = await _dataConnectionFeatureFactory.CreateFeatureAsync(command, address, _options.DataPort)
.ConfigureAwait(false);
var oldFeature = Connection.Features.Get <IFtpDataConnectionFeature>();
try
{
oldFeature.Dispose();
}
catch
{
// Ignore dispose errors!
}
Connection.Features.Set(feature);
}
catch (NotSupportedException ex)
{
return(new FtpResponse(522, T("Extended port failure - {0}.", ex.Message)));
}
return(new FtpResponse(200, T("Command okay.")));
}