send method

Future<void> send(Severity severity, String message, { Facility? facility, int? facilityInt, DateTime? timeStamp, SyslogTags? tags, String? msgId, String? structuredData, })

Send message with severity and facility or facilityInt (for custom facility) to the syslog server. tags can be used to override the values passed to SyslogUdpClient constructor. If msgId or structuredData are used, the message is sent using RFC 5424.

Implementation

Future<void> send(Severity severity, String message,
    {Facility? facility,
    int? facilityInt,
    DateTime? timeStamp,
    SyslogTags? tags,
    String? msgId,
    String? structuredData}) async {
  facilityInt ??= facility?.index;
  assert(facilityInt != null);
  final priority = facilityInt! * 8 + severity.index;
  const version = 1;
  timeStamp ??= DateTime.now();
  timeStamp = timeStamp.toUtc();
  final hostName = tags?.hostName ?? this.tags?.hostName ?? '-';
  final appName = tags?.appName ?? this.tags?.appName ?? '-';
  final procId = tags?.procId ?? this.tags?.procId ?? '-';
  final hasMessageId = msgId != null;
  msgId ??= '-';
  final hasStructuredData = structuredData != null;
  structuredData = hasStructuredData ? '[$structuredData]' : '-';
  final useRfc5424 = this.useRfc5424 || hasMessageId || hasStructuredData;

  final m = useRfc5424
      ? '<$priority>$version ${timeStamp.toIso8601String()} $hostName $appName $procId $msgId $structuredData $message'
      : '<$priority>${_dateFormatForRfc3164.format(timeStamp)} $hostName $appName[$procId]: $message';

  await init();
  _soc!.send(utf8.encode(m), address, port);
}