setHeader method

void setHeader(String name, String? value, [ HeaderEncoding encoding = HeaderEncoding.none ])

Sets a header with the specified name, value and optional encoding,

replacing any existing header with the same name.

Implementation

void setHeader(
  String name,
  String? value, [
  HeaderEncoding encoding = HeaderEncoding.none,
]) {
  headers ??= <Header>[];
  final lowerCaseName = name.toLowerCase();
  headers?.removeWhere((h) => h.lowerCaseName == lowerCaseName);
  var localValue = value;
  if (value != null) {
    if (encoding == HeaderEncoding.Q) {
      localValue = MailCodec.quotedPrintable.encodeHeader(
        value,
        nameLength: name.length,
      );
    } else if (encoding == HeaderEncoding.B) {
      localValue = MailCodec.base64.encodeHeader(
        value,
        nameLength: name.length,
      );
    }
  }
  headers?.add(Header(name, localValue, encoding));
  _headersModified = true;
}