DO NOT REPLY [Bug 15397] New: - class loader problem with javamail and tomcat 4.1.12

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=15397

class loader problem with javamail and tomcat 4.1.12

           Summary: class loader problem with javamail and tomcat 4.1.12
           Product: Tomcat 4
           Version: 4.1.12
          Platform: Sun
        OS/Version: Other
            Status: NEW
          Severity: Minor
          Priority: Other
         Component: Catalina
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: fred@stsci.edu


I upgraded from 4.0.6 to 4.1.12 and now java mail throws an "invalid protocol"
error when trying to get the Transport.  This problem does not occur with 4.0.6.
If I include a private copy of mail.jar in the webapp the problem goes away in
4.1.12, so I assume the problem is related to sharing the one in common/lib.

Example code:

    public static synchronized Session getSession() {
        if(session == null) {
            Properties props = new Properties();
            props.put("mail.transport.protocol", "smtp");
            props.put("mail.smtp.host", "random smtp host");

            session = Session.getDefaultInstance(props);
        }
        return session;
    }

The line that fails:
                Transport t = getSession().getTransport();

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