Hi Sameer
Thanks for the pointer. As it happened, I managed to get StartTLS to work
inside Tomcat, although I am still not sure why there is a difference in
behaviour when the below application is run standalone vs inside Tomcat. In
advance, please forgive the extended explanation but I am acutely aware that
this may information may help someone else in the event they come across the
same problem.
What I discovered was (what seems like) a limitation in the Java mail API:
o I was attempting to use a DummySSLFactory to skip certificate
authentication
o Java mail only allows you to specify one socketFactoryClass i.e.
mail.imap.socketFactory.class
o When you are using StartTLS, Java mail should be using two socketFactory
classes (one for the first plaintext connection and then another for the
subsequent secure connection)
o Javamail does not provide a way to set two different socket factory
classes
o setting the default ssl socket factory using the SSL libraries directly
had no effect inside Tomcat
In the end, I ended up editing the Java mail source code and changing
com.sun.mail.util.SocketFetcher
the Java mail source code to accept: mail.imap.startTLS.socketFactory.class.
public static Socket startTLS(Socket socket, Properties props,
String prefix) throws IOException {
....
props.getProperty(prefix + ".startTLS.socketFactory.class", null);
....
}
That way, I could now specify:
mail.imap.socketFactory.class and mail.imap.startTLS.socketFactory.class so
that different Socket factories would be called depending on whether a
plaintext or encrypted connection is being negotiated as part of the
StartTLS protocol extension.
At this point, I am wondering whether I am missing something about the use
of the StartTLS functionality or this is a genuine issue in the java mail
API.
Thanks for the time taken to investigate this problem. I really appreciate
it!
Regards,
Jamie
Sameer Acharya wrote:
>
> Can you give the line number as to where the error is
> happening.
> I found this link on google search you can read thru
> the same it describes similar problems.
> We have not had problems using java mail under tomcat
> but we dont use imap.
> http://forum.java.sun.com/thread.jspa?threadID=761635&messageID=4347363
>
> -Sameer
>
> --- jamieb <[EMAIL PROTECTED]> wrote:
>
>>
>>
>> Hi there
>>
>> I have encountered a bizzare problem... I have a
>> small peice of code that
>> fetches emails from an IMAP server using TLS. This
>> code works perfectly in a
>> standalone application, however, when I copy and
>> paste it over to a Tomcat
>> application it does not work. The code uses Java
>> Mail 1.4.1 and Java Secure
>> Sockets.
>>
>> The following error is outputted when the code is
>> run from within Tomcat:
>>
>> javax.mail.MessagingException: Unrecognized SSL
>> message, plaintext
>> connection?;
>> nested exception is:
>> javax.net.ssl.SSLException: Unrecognized SSL
>> message, plaintext connection?
>>
>> NOTE: in case you are wondering: YES in both cases
>> the server is connecting
>> to the same port.
>>
>> Now I have checked:
>> - the same java mail version is used across
>> applications
>> - the same JRE (v1.6)
>> - all input parameters are the same
>>
>> Any ideas on what might be causing this problem in
>> the Tomcat environment?
>>
>> package com.test.support;
>>
>> import java.io.*;
>> import java.security.Security;
>> import java.util.Properties;
>> import javax.mail.*;
>> import javax.mail.internet.*;
>> import java.net.*;
>>
>> public class TestMailboxConnection {
>>
>> /**
>> * @param args
>> */
>>
>> private static final String DUMMY_SSL_FACTORY =
>> "com.test.support.DummySSLSocketFactory";
>>
>> public static void main(String[] args) {
>>
>>
>> if (args.length<3) {
>> System.out.println("\n\nUtility to
>> Detect Mail Server
>> Connection Settings");
>> System.out.println("Usage:
>> TestMailboxConnection server
>> username password port secure_port ");
>> return;
>> }
>> String server = args[0];
>> String username = args[1];
>> String password = args[2];
>>
>> String port = "143";
>> String secureport = "993";
>>
>> if (args.length>3) {
>> port = args[3];
>> secureport = args[4];
>> }
>>
>>
>> Properties props = new Properties();
>> // Insecure Test
>> testEcho(server,port);
>> //testEcho(server,secureport);
>> System.out.println("properties:"+props);
>> String protocol = "imap";
>> props.put("mail."+protocol+".port",port);
>> test("imap
>>
> insecure",protocol,server,Integer.valueOf(port),username,password,props);
>>
>> props.put("mail."+protocol+".starttls.enable",
>> Boolean.TRUE);
>>
>>
> props.put("mail."+protocol+".socketFactory.fallback","true");
>>
>> props.put("mail."+protocol+".socketFactory.class",
>> getSSLFactory());
>>
>>
> props.put("mail."+protocol+".socketFactory.port",secureport);
>>
>> test("imap tls
>>
> (fallback)",protocol,server,Integer.valueOf(port),username,password,props);
>>
>>
> props.put("mail."+protocol+".socketFactory.fallback","false");
>> test("imap
>>
> tls",protocol,server,Integer.valueOf(port),username,password,props);
>>
>> protocol = "imaps";
>> props = new Properties();
>>
>>
> props.put("mail."+protocol+".socketFactory.fallback","false");
>>
>> props.put("mail."+protocol+".socketFactory.class",
>> getSSLFactory());
>>
>>
> props.put("mail."+protocol+".socketFactory.port",secureport);
>> test("imap
>>
> ssl",protocol,server,Integer.valueOf(port),username,password,props);
>>
>>
>>
>> }
>>
>> public static String getSSLFactory() {
>> return DUMMY_SSL_FACTORY;
>> }
>>
>> public static void test(String testName, String
>> protocol, String server,
>> int port, String username, String password,
>> Properties props) {
>> java.security.Provider[] providers =
>> Security.getProviders();
>> Session session = Session.getInstance(props,
>> null);
>> session.setDebug(true);
>> Store store = null;
>> try {
>> store = session.getStore(protocol);
>> } catch (Exception nspe) {
>> System.out.println("no such provider");
>> return;
>> }
>> try {
>>
>>
> System.out.println("\nprotocol='"+protocol+"',server='"+server+"',port='"+port+"',username='"+username+"',password='"+password+"'}");
>> System.out.println(props+"\n");
>> store.connect(server,Integer.valueOf(port),
>> username,password);
>> } catch (Exception e) {
>> System.out.println("\n>>>>>>>>>>>>>>>>>
>> failed:"+e.getMessage()+"\n");
>> System.out.println("mailbox connection
>> properties "+props);
>> e.printStackTrace();
>> return;
>> }
>> System.out.println("\n>>>>>>>>>>>>>>>>>
>> success!"+"\n");
>> System.out.println("mailbox connection
>> properties "+props);
>> return;
>> }
>>
>> public static void testEcho(String server,String
>> port) {
>> System.out.println("test echo (port "+port+"):");
>> BufferedReader in = null;
>> Socket echoSocket=null;
>> try {
>> echoSocket = new Socket(server,
>> Integer.valueOf(port));
>> in = new BufferedReader(new
>> InputStreamReader(
>>
>> echoSocket.getInputStream()));
>> echoSocket.setSoTimeout(2000);
>> System.out.println("echo: " +
>> in.readLine());
>> in.close();
>> echoSocket.close();
>> } catch (UnknownHostException e) {
>> System.err.println("unknown host
>> host:"+server);
>> return;
>> } catch (IOException e) {
>> System.err.println("IO error occurred
>> while connecting to
>> host:"+e.getMessage());
>> return;
>> }
>>
>>
>> }
>>
>>
>>
>> }
>>
>>
>> --
>> View this message in context:
>>
> http://www.nabble.com/Java-Mail-Inside-Tomcat-tp16008995p16008995.html
>> Sent from the Tomcat - User mailing list archive at
>> Nabble.com.
>>
>>
>>
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>
>
>
>
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