Re: Multiple stack instances works in version 1.2

Thanks. One correction -- All deprecated features except for 
RETRANSMISSION_FILTER  (which nobody was using anyway) will be 
implemented by the RI but not tested for in the TCK.

Regards,

Ranga

Becky McElroy wrote:

> Thanks for the insight, Ranga.
> And especially, thanks for all your and others' efforts on this project.
> Regards,
> Becky
>
> M. Ranganathan wrote:
>
>> Becky,
>>
>> This is a backwards compatibility (deprecated)  feature that may or 
>> may not work with other JAIN-SIP implementations. Implementations 
>> SHOULD (it is strongly recommeded that they do) support multiple 
>> stacks if the javax.sip.IP_ADDRESS property is specified -- each call 
>> to careate a new stack gets its own instance. The RI will support it 
>> and complaint implemetations *SHOULD* support it if they care about 
>> backwards compatibility. The TCK will not test for deprecated 
>> features but the RI will implement all deprecated features.
>>
>> The current best practice would be to have a single stack and 
>> multiple Listening points, each with its own IP address and port. 
>> Note that each vendor (i.e. specified by path) gets its own stack 
>> instance however, so you can still have multiple stacks -- just not 
>> multiple stacks per vendor in a given jvm.
>>
>> Ranga
>>
>> Becky McElroy wrote:
>>
>>> Hi,
>>>
>>> I certainly don't want to complain about this... just want to 
>>> understand it. I thought I saw someone say that in the new 1.2 stack 
>>> version, multiple SipStack's on one box wouldn't work. However, it 
>>> seems to work fine (I updated from CVS this past weekend).
>>>
>>> From my test program I can create two SipStacks, just like before, 
>>> using two different sets of properties with different IP addresses 
>>> and ports (same SipFactory used to create both stacks, a different 
>>> listening point per stack, same SipListener listening to both). 
>>> Everything gets created fine and messaging between two test phones 
>>> (1 per stack) works fine, with or without a proxy inbetween.
>>>
>>> Again, not to complain (this is great) but just want to know if this 
>>> setup will continue to work as is, or can we expect it to break at 
>>> some point.
>>>
>>> Thanks,
>>> Becky
>>>
>>> ______________________________________
>>>
>>> public class TestTwoSipStacksNoProxy extends SipTestCase
>>> {
>>>    private static String IP_ADDRESS_1 = "127.0.0.1";
>>>    private static String IP_ADDRESS_2 = "192.168.1.102";
>>>      private SipStack sipStack1;
>>>    private SipStack sipStack2;
>>>
>>>    private SipPhone ua;
>>>
>>>    private Properties properties1 = new Properties();
>>>    private Properties properties2 = new Properties();
>>>
>>>    public TestTwoSipStacksNoProxy(String arg0)
>>>    {
>>>        super(arg0);
>>>              // when both stacks use same IP addr, get 
>>> TooManyListenersException
>>>        properties1.setProperty("javax.sip.IP_ADDRESS", IP_ADDRESS_1);
>>>        properties1.setProperty("javax.sip.RETRANSMISSION_FILTER", 
>>> "true");
>>>        properties1.setProperty("javax.sip.STACK_NAME", "testAgent");
>>>        properties1.setProperty("gov.nist.javax.sip.TRACE_LEVEL", "32");
>>>        properties1.setProperty("gov.nist.javax.sip.DEBUG_LOG",
>>>                "testAgent_debug.txt");
>>>        properties1.setProperty("gov.nist.javax.sip.SERVER_LOG",
>>>                "testAgent_log.txt");
>>>        properties1.setProperty("gov.nist.javax.sip.READ_TIMEOUT", 
>>> "1000");
>>>
>>>        properties2.setProperty("javax.sip.IP_ADDRESS", IP_ADDRESS_2);
>>>        properties2.setProperty("javax.sip.RETRANSMISSION_FILTER", 
>>> "true");
>>>        properties2.setProperty("javax.sip.STACK_NAME", "testAgent2");
>>>        properties2.setProperty("gov.nist.javax.sip.TRACE_LEVEL", "32");
>>>        properties2.setProperty("gov.nist.javax.sip.DEBUG_LOG",
>>>                "testAgent2_debug.txt");
>>>        properties2.setProperty("gov.nist.javax.sip.SERVER_LOG",
>>>                "testAgent2_log.txt");
>>>        properties2.setProperty("gov.nist.javax.sip.READ_TIMEOUT", 
>>> "1000");
>>>    }
>>>
>>>    /*
>>>     * @see SipTestCase#setUp()
>>>     */
>>>    public void setUp() throws Exception
>>>    {
>>>        try
>>>        {
>>>            sipStack1 = new SipStack(null, 5060, properties1); // 
>>> this would be org.cafesip.sipunit.SipStack
>>>            sipStack2 = new SipStack(null, 5090, properties2); // ditto
>>>        }
>>>        catch (Exception ex)
>>>        {
>>>            fail("Exception: " + ex.getClass().getName() + ": "
>>>                    + ex.getMessage());
>>>            throw ex;
>>>        }
>>>
>>>        try
>>>        {
>>>            ua = sipStack1.createSipPhone("sip:[email protected]");
>>>        }
>>>        catch (Exception ex)
>>>        {
>>>            fail("Exception creating SipPhone: " + 
>>> ex.getClass().getName()
>>>                    + ": " + ex.getMessage());
>>>            throw ex;
>>>        }
>>>    }
>>>
>>> etc.
>>> }
>>>
>>>
>>> org.cafesip.sipunit.SipStack:
>>>
>>>    /**
>>>     * A constructor for this class. Before establishing any SIP 
>>> sessions,
>>>     * instantiate this class. You may provide the parameters for SIP 
>>> protocol
>>>     * binding on a specific TCP/UDP port, which will be used to 
>>> communicate
>>>     * with external SIP agents (a SIP proxy server, for example). A 
>>> test
>>>     * program may contain one or more SipStack objects, each of 
>>> which may have
>>>     * one or more SipPhones.
>>>     *
>>>     * @param proto
>>>     *            SIP transport protocol, "tcp" or "udp" (default is 
>>> "udp").
>>>     * @param port
>>>     *            port on which this stack listens for messages 
>>> (default is
>>>     *            5060).
>>>     * @param props
>>>     *            properties of the SIP stack. These properties are 
>>> the same as
>>>     *            that defined for JAIN-SIP SipStack. If this 
>>> parameter has a
>>>     *            null value, we pick default values for you.
>>>     * @throws Exception
>>>     */
>>>    public SipStack(String proto, int port, Properties props) throws 
>>> Exception
>>>    {
>>>        if (sipFactory == null)
>>>        {
>>>            sipFactory = SipFactory.getInstance();
>>>            sipFactory.setPathName("gov.nist");
>>>        }
>>>
>>>        if (props == null)
>>>        {
>>>            props = defaultProperties;
>>>        }
>>>
>>>        if (props.getProperty("javax.sip.STACK_NAME") == null)
>>>        {
>>>            props.setProperty("javax.sip.STACK_NAME", 
>>> "SipUnitTestAgent");
>>>        }
>>>
>>>        sipStack = sipFactory.createSipStack(props);
>>>
>>>        headerFactory = sipFactory.createHeaderFactory();
>>>        addressFactory = sipFactory.createAddressFactory();
>>>        messageFactory = sipFactory.createMessageFactory();
>>>
>>>        if (proto == null)
>>>        {
>>>            proto = DEFAULT_PROTOCOL;
>>>        }
>>>
>>>        if (port < 0)
>>>        {
>>>            port = DEFAULT_PORT;
>>>        }
>>>
>>>        ListeningPoint lp = sipStack.createListeningPoint(port, proto);
>>>
>>>        sipProvider = sipStack.createSipProvider(lp);
>>>        sipProvider.addSipListener(this);
>>>    }
>>>
>>> etc.
>>>
>>>
>>> _______________________________________________
>>> nist-sip mailing list
>>> [email protected]
>>> http://www-x.antd.nist.gov/mailman/listinfo/nist-sip
>>>
>>
>>
>
>


-- 
M. Ranganathan 

Advanced Networking Technologies Division,
National Institute of Standards and Technology (NIST),
100 Bureau Drive, Stop 8920, Gaithersburg, MD 20899. 
tel:301 975 3664 , fax:301 590 0932 http://w3.antd.nist.gov/
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