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//
// SmtpServer.cs - Dummy SMTP server used to test SmtpClient
//
// Author:
// Raja R Harinath <harinath@hurrynot.org>
//
using System;
using System.Diagnostics;
using System.IO;
using System.Net;
using System.Net.Mail;
using System.Net.Sockets;
using System.Text;
using System.Threading;
namespace MonoTests.System.Net.Mail {
public class SmtpServer
{
public string mail_from, rcpt_to;
public StringBuilder data;
TcpListener server;
public IPEndPoint EndPoint {
get { return (IPEndPoint) server.LocalEndpoint; }
}
public SmtpServer ()
{
server = new TcpListener (0);
server.Start (1);
}
private static void WriteNS (NetworkStream ns, string s)
{
Trace ("response", s);
byte [] bytes = Encoding.ASCII.GetBytes (s);
ns.Write (bytes, 0, bytes.Length);
}
public void Run ()
{
string s;
using (TcpClient client = server.AcceptTcpClient ()) {
Trace ("connection", EndPoint.Port);
using (NetworkStream ns = client.GetStream ()) {
WriteNS (ns, "220 localhost\r\n");
using (StreamReader r = new StreamReader (ns, Encoding.UTF8)) {
while ((s = r.ReadLine ()) != null && Dispatch (ns, r, s))
;
}
}
}
}
// return false == terminate
public bool Dispatch (NetworkStream ns, StreamReader r, string s)
{
Trace ("command", s);
if (s.Length < 4) {
WriteNS (ns, "502 Huh\r\n");
return false;
}
bool retval = true;
switch (s.Substring (0, 4)) {
case "HELO":
break;
case "QUIT":
WriteNS (ns, "221 Quit\r\n");
return false;
case "MAIL":
mail_from = s.Substring (10);
break;
case "RCPT":
rcpt_to = s.Substring (8);
break;
case "DATA":
WriteNS (ns, "354 Continue\r\n");
data = new StringBuilder ();
while ((s = r.ReadLine ()) != null) {
if (s == ".")
break;
data.AppendLine (s);
}
Trace ("end of data", s);
retval = (s != null);
break;
default:
WriteNS (ns, "502 Huh\r\n");
return true;
}
WriteNS (ns, "250 OK\r\n");
return retval;
}
[Conditional ("TEST")]
static void Trace (string key, object value)
{
Console.Error.WriteLine ("{0}: {1}", key, value);
}
#if TEST
static void DoTest (SmtpServer s, SmtpClient c, MailMessage m)
{
Thread t = new Thread (s.Run);
t.Start ();
c.Send (m);
t.Join ();
Console.WriteLine ("Message From: {0}", m.From);
Console.WriteLine ("Message Sender: {0}", m.Sender);
Console.WriteLine ("Mail From: {0}", s.mail_from);
Console.WriteLine ("Rcpt To: {0}", s.rcpt_to);
Console.WriteLine ("-------------------------------------");
Console.Write (s.data);
Console.WriteLine ("-------------------------------------");
}
static void Main ()
{
var server = new SmtpServer ();
var client = new SmtpClient ("localhost", server.EndPoint.Port);
var msg = new MailMessage ("foo@example.com", "bar@example.com", "hello", "howdydoo");
DoTest (server, client, msg);
msg.Sender = new MailAddress ("baz@example.com");
DoTest (server, client, msg);
}
#endif
}
}
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