/// <summary>
/// Get state of FileZilla server
/// </summary>
/// <returns>True if Success</returns>
public bool SetSettings(Settings settings)
{
// Check options
if(ProtocolVersion < ProtocolVersions.TLS
? settings.Options.Count != (int)OptionId.V11_OPTIONS_NUM
: settings.Options.Count != (int)OptionId.V12_OPTIONS_NUM)
throw new ApiException("Bad option count");
// Before serializing, give Admin Password option special treatment.
// If password is null, then set it to invalid ("*").
// That way server can distinguish between
// - Not set (Null, serialized as "*")
// - Blank password ("")
// - Actual password
var adminPassword = settings.GetOption(OptionId.ADMINPASS);
if (adminPassword.TextValue == null) adminPassword.TextValue = "*";
SendCommand(MessageType.Settings, writer => settings.Serialize(writer, ProtocolVersion));
return Receive<bool>(MessageType.Settings);
}