public PopPseudoServer()
{
server = new TcpListener(new IPEndPoint(IPAddress.Loopback, 0));
server.Start();
requestStream = new StrictLineOrientedStream(new MemoryStream());
}
private static MimeMessage ParseBody(LineOrientedStream stream, MimeHeaderCollection headers)
{
var message = new MimeMessage(headers);
ParseContentType(message);
ParseContentTransferEncoding(message);
ParseContentDisposition(message);
// read and parse content
MemoryStream contentStream;
if (message.MimeType == null || !message.MimeType.TypeEquals("multipart")) {
contentStream = new MemoryStream(1024);
stream.CopyTo(contentStream, MimeFormat.Standard.Folding);
message.Content = contentStream;
return message;
}
// multipart/*
var parts = new List<MimeMessage>();
var delimiter = new ByteString("--" + message.Boundary);
var closeDelimiter = new ByteString("--" + message.Boundary + "--");
MemoryStream body = null;
ByteString line = null;
ByteString lastLine = null;
contentStream = new MemoryStream(1024);
for (;;) {
if (lastLine != null)
contentStream.Write(lastLine.ByteArray, 0, lastLine.Length);
var l = stream.ReadLine();
if (l == null)
break;
lastLine = line;
line = new ByteString(l);
if (line.StartsWith(delimiter)) {
if (lastLine != null) {
if (lastLine.EndsWith(Octets.CRLF))
// CRLF "--" boundary
contentStream.Write(lastLine.ByteArray, 0, lastLine.Length - 2);
else
// LF "--" boundary or CR "--" boundary
contentStream.Write(lastLine.ByteArray, 0, lastLine.Length - 1);
}
contentStream.Position = 0;
if (body == null)
body = contentStream;
else
parts.Add(Parse(contentStream));
if (line.StartsWith(closeDelimiter))
break;
else
contentStream = new MemoryStream(1024);
lastLine = null;
}
}
message.Content = body;
message.SubParts.AddRange(parts);
return message;
}
private static MimeMessage Parse(LineOrientedStream stream)
{
return ParseBody(stream, ParseHeader(stream));
}
private static MimeHeaderCollection ParseHeader(LineOrientedStream stream)
{
var headers = new MimeHeaderCollection();
MimeHeader current = null;
for (;;) {
var lineBytes = stream.ReadLine(false);
if (lineBytes == null)
break; // unexpected end of stream
var line = new ByteString(lineBytes);
if (line.IsEmpty)
break; // end of headers
if (line[0] == Octets.HT || line[0] == Octets.SP) { // LWSP-char
// folding
if (current == null)
// ignore incorrect formed header
continue;
current.Value += Chars.SP;
current.Value += line.TrimStart().ToString();
}
else {
// field = field-name ":" [ field-body ] CRLF
// field-name = 1*<any CHAR, excluding CTLs, SPACE, and ":">
var delim = line.IndexOf(MimeHeader.NameBodyDelimiter); // ':'
if (delim < 0) {
// ignore incorrect formed header
current = null;
continue;
}
var header = new MimeHeader(line.Substring(0, delim).TrimEnd().ToString(),
line.Substring(delim + 1).TrimStart().ToString());
headers.Add(header);
current = header;
}
}
return headers;
}
