return contentTransferEncodingField != null ? contentTransferEncodingField.getEncoding() :
MimeUtil.ENC_7BIT;
}
public long getContentLength() {
ContentLengthField contentLengthField = (ContentLengthField) fields.get(CONTENT_LENGTH);
return contentLengthField != null ? contentLengthField.getContentLength() : -1;
}