Re: Multiple stack instances works in version 1.2

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
>>
>
>