/**
* Parses the headers of the provided message
* @param zibo\library\mail\Message $message The message to parse the headers of
* @return null
*/
private function parseHeaders(Message $message)
{
$this->headers[self::HEADER_MIME_VERSION] = self::HEADER_MIME_VERSION . ': 1.0';
$messageId = $message->getMessageId();
if ($messageId) {
$this->headers[self::HEADER_MESSAGE_ID] = self::HEADER_MESSAGE_ID . ': ' . $messageId;
}
$inReplyTo = $message->getInReplyTo();
if ($inReplyTo) {
$this->headers[self::HEADER_IN_REPLY_TO] = self::HEADER_IN_REPLY_TO . ': ' . $inReplyTo;
}
$references = $message->getReferences();
if ($references) {
$this->headers[self::HEADER_REFERENCES] = self::HEADER_REFERENCES . ': ' . implode(' ', $references);
}
$autoSubmitted = $message->getAutoSubmitted();
if ($autoSubmitted) {
$this->headers[self::HEADER_AUTO_SUBMITTED] = self::HEADER_AUTO_SUBMITTED . ': ' . $autoSubmitted;
}
}