Hi Harmeet,

I looked over the ProtocolSimulator and I have some questions. What is it primarily used for? For example, is it used for stress testing or functional testing (or both?)

I'm personally inclined to just write junit tests that excersize the different SMTP command sequences, but I'm interested to know what thought processes and whatnot have already gone on that has shown that approach to be lacking. Or perhaps that approach wasn't found to be lacking, the current one was just the preferred at the time. :)

I'm just trying to gather as much info as possible before I jump in so that I can use the knowledge gained from past experiences.

Thanks,
Kenny Smith
JournalScape.com

Harmeet Bedi wrote:
----- Original Message -----
From: "Kenny Smith" <[EMAIL PROTECTED]>

I don't really have a specific area to focus on, but SMTP is at least a
protocol I use, so I can get excited about it. :) I'm going to spend some
time looking over the structure Harmeet already has (and I'm sure asking
him

a bunch of questions) and I'll xref with the RFCs. :)

For pure protocol testing, one way is to this is to simulate a protocol
session.
Protocol Simulator simulates telnet protocol and verifies results using PERL
Regex. All of James' protocols build on telnet and can therefore be
simulated. It is capable of multithreaded test simulations.


take a look at
http://cvs.apache.org/viewcvs.cgi/jakarta-james/tests/src/conf/smtp.protocol
session?rev=1.1&content-type=text/vnd.viewcvs-markup

This protocol simulator runs this and similar scripts.
http://cvs.apache.org/viewcvs.cgi/jakarta-james/tests/src/java/org/apache/ja
mes/testing/ProtocolSimulator.java?rev=1.6&content-type=text/vnd.viewcvs-mar
kup

Darrel has a bunch similar protocol simulation test scripts under
http://cvs.apache.org/viewcvs.cgi/jakarta-james/proposals/imap2/test/org/apa
che/james/

Usage:
$ java org.apache.james.testing.ProtocolSimulator
        -s, --server
                Remote Server Host To Test Against
        -p, --port
                Remote Server Port To Test Against
        -t, --template
                Protocol Session Template
        -w, --workers
                Number Of Concurrent Simulations. Default Is 1.
        -i, --iterations
                Number Of Protocol Simulations Iterations Per Worker. Defaul
                t Is 1.
        -h, --help
                Usage Help

I was thinking of doing these improvements to the protocol simulator:
- Have a template mechanism that allows script inclusion and variables.
WebMacro/Velocity would do this well.
- Scripts would be templates and would generate output that would be
simulated by protocol simulator
Was also thinking of have
- Commands to retry/sleep. This would allow protocol simulation of say
remotemanager, pop3 and smtp interaction with sleep-retry.

Was hoping to have RFC testing as a subproject in James and potentially
interest other opensource projects to pool test effort. The main advantage
would be mulitple projects get tests baseline. James would have the
additional benefit that it knows when it has beat exim or sendmail or at
least where it stands relative to others. This maybe interesting to
commercial organizations too. Testing as a separate sub-project has been
deferred, but not rejected.

Harmeet


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