[reSIProcate] Creating a DUM with automatic port?

[Byron Campen]

	Yeah, my thoughts too.

Best regards,
Byron Campen

> It appears you would need to refresh the Tuple after binding (in
> InternalTransport::bind()) using getsockname().
>
> Brad
>
> Byron Campen <bcampen at estacado.net> wrote on 31/01/2007 03:40:06 AM:
>
>>    Hrm. I guess this could be useful for clients. It looks like we
>> would have to make the changes necessary to allow the caller to
>> determine which port the transport was ultimately created on. Is this
>> a high priority?
>>
>> Best regards,
>> Byron Campen
>>
>>> I don't think that is what most people would expect.  Passing a
>>> port of
>>> 0, I would expect that the operating system would choose an
>>> appropriate
>>> free port for me.  However I'm not sure if this capability is
>>> portable.
>>> Does anyone know?
>>>
>>> Scott
>>>
>>>> -----Original Message-----
>>>> From: resiprocate-devel-bounces at list.resiprocate.org
>>>> [mailto:resiprocate-devel-bounces at list.resiprocate.org] On  
>>>> Behalf Of
>>>> Byron Campen
>>>> Sent: Tuesday, January 30, 2007 11:09 AM
>>>> To: Bradley Gorman
>>>> Cc: resiprocate-devel at list.resiprocate.org
>>>> Subject: Re: [reSIProcate] Creating a DUM with automatic port?
>>>>
>>>>    Yeah, this looks broken. I think it would be reasonable to
>>> expect
>>>> the stack to select the default SIP port for the transport you are
>>>> adding if no port is specified. Does anyone disagree?
>>>>
>>>> Best regards,
>>>> Byron Campen
>>>>
>>>>> Hi All
>>>>>
>>>>> I've found something in reSIP that confuses me.
>>>>>
>>>>> I have a SIP client using the DialogUsageManager. I am trying  
>>>>> to use
>>>>> addTransport() to specify that it should connect via UDP and/or  
>>>>> TCP
>>>>> and I don't particularly care what port it should connect from (of
>>>>> course, I would prefer an ephemeral port). The prototype for
>>>>> SipStack::addTransport() implies I should be able to omit the port
>>>> and
>>>>> use a default of 0, however the implementation of this function
>>>>> immediately asserts that the port should be greater than 0. From
>>> what
>>>>> I have seen, reSIP just calls bind() with a normal sockaddr
>>>> structure.
>>>>>
>>>>>> From this I would assume I can allow it to select a port for me,
>>>>>> using a
>>>>> port of 0, although the assertion implies I should not. I would
>>>> prefer
>>>>> not to select my own ephemeral port so I do not have to handle any
>>>>> collisions with in-use ports.
>>>>>
>>>>>  Am I using the DUM correctly by trying to add the desired  
>>>>> transport
>>>>> with a default port of 0?
>>>>> Is there any reason I should NOT specify port 0?
>>>>>
>>>>> The relevant code snippets are below
>>>>>
>>>>> Thanks
>>>>>
>>>>> Brad
>>>>>
>>>>>
>>>>> My client:
>>>>>
>>>>>     dum.addTransport(resip::UDP, 12345, resip::V4);
>>>>>         // always uses local/client port of 12345 (BAD!)
>>>>>
>>>>>     dum.addTransport(resip::UDP, 0, resip::V4);
>>>>>         // assertion failure (port > 0)
>>>>>
>>>>>     dum.addTransport(resip::UDP);
>>>>>         // assertion failure (port > 0)
>>>>>
>>>>>
>>>>> resip/stack/SipStack.hxx:
>>>>>
>>>>>       Transport* addTransport( TransportType protocol,
>>>>>                          int port=0,.
>>>>>                          IpVersion version=V4,
>>>>>                          StunSetting stun=StunDisabled,
>>>>>                          const Data& ipInterface = Data::Empty,.
>>>>>                          const Data& sipDomainname =  
>>>>> Data::Empty, //
>>>>> only used
>>>>>                                                                    
>>>>> //
>>>> f
>>>>> or TLS
>>>>>                                                                    
>>>>> //
>>>> b
>>>>> ased stuff.
>>>>>                          const Data& privateKeyPassPhrase =
>>>>> Data::Empty,
>>>>>                          SecurityTypes::SSLType sslType =
>>>>> SecurityTypes::TLSv1);
>>>>>
>>>>>
>>>>> resip/stackSipStack.cxx:
>>>>>
>>>>> SipStack::addTransport( TransportType protocol,
>>>>>                         int port,.
>>>>>                         IpVersion version,
>>>>>                         StunSetting stun,
>>>>>                         const Data& ipInterface,.
>>>>>                         const Data& sipDomainname,
>>>>>                         const Data& privateKeyPassPhrase,
>>>>>                         SecurityTypes::SSLType sslType) {
>>>>>    assert(!mShuttingDown);
>>>>>    assert( port >  0 );
>>>>>    ...
>>>>> }
>>>>> _______________________________________________
>>>>> resiprocate-devel mailing list
>>>>> resiprocate-devel at list.resiprocate.org
>>>>> https://list.resiprocate.org/mailman/listinfo/resiprocate-devel
>>>
>>
>

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