[Spread-users] Re: Re: Re: Multicast help

[Mark Snelling]

Using the multicast address 239.0.1.3, spsend seems to send ok. sprecv 
however returns the following error...

DL_init_channel: problem in setsockopt to multicast address -285212413
Exit caused by Alarm(EXIT)

It seems any valid class D multicast address produces the same error.

Cheers,

Mark.

"Yair Amir" <yairamir at cs.jhu.edu> wrote in message 
news:443E43EE.3040207 at cs.jhu.edu...
> Hi,
>
> When there is only one daemon in the segment, the segment
> multicast/broadcast address is never used (of course).
>
> I think there is a problem in your network setup. To verify
> it has nothing to do with Spread, just use the spsend and sprecv programs
> that are provided with Spread and see if the multicast addresses
> you are using actually work as expected in your network. These
> are very simple programs that help (without Spread) see if the
> network behave as you tell Spread it should - i.e. that the unicast
> addresses and the multicast addresses really work on your network
> as expected.
>
> Cheers,
>
>   :) Yair.
>
>
> Mark Snelling wrote:
>> In answer to your questions, all daemons are using Windows XP SP2. I've 
>> successfully got it working on our networks broadcast address. It seems 
>> to work with that multicast address if there are no other nodes specified 
>> in the segment. ie simply
>>
>>
>> Spread_Segment 239.0.1.3 {
>>
>>       wcc014 192.168.147.54
>> }
>>
>>
>> Thanks,
>> Mark.
>>
>>
>> "Ryan Caudy" <rcaudy at gmail.com> wrote in message 
>> news:e46e06eb0604130325x22ed7053s47dce01bb91c157e at mail.gmail.com...
>> To the best of my knowledge, this problems is a new one.
>>
>> It sounds to me like there may be a windows-specific bug or
>> incompatibility.  Can you fill in a bit more information about which
>> versions of Windows you're using?
>>
>> The multicast address you're using appears valid, but can you try with
>> a different multicast address or with the correct broadcast address
>> for your network, to see if it's still a problem?
>>
>> Cheers,
>> Ryan
>>
>> On 4/13/06, Mark Snelling <mark at bakedbeans.com> wrote:
>>> Is anybody able to help me with this?
>>>
>>> "Mark Snelling" <mark at bakedbeans.com> wrote in message
>>> news:e15v06$ar4$1 at sea.gmane.org...
>>>> Hi
>>>>
>>>> I'm trying to set up a simple multicast segment with three Windows
>>>> machines. My spread.conf simply has the lines below:
>>>>
>>>> Spread_Segment 239.0.1.3 {
>>>> wcc013 192.168.147.187
>>>> wcc014 192.168.147.54
>>>> wcc035 192.168.147.43
>>>> }
>>>>
>>>> However when I try and run spread, I get the following messages and the
>>>> daemon terminates:
>>>>
>>>> Successfully configured Segment 0 [239.0.1.3:4803] with 3 procs:
>>>>                      wcc013: 192.168.147.187
>>>>                      wcc014: 192.168.147.54
>>>>                      wcc035: 192.168.147.43
>>>> Finished configuration file.
>>>> Hash value for this configuration is: 432108239
>>>> Conf_load_conf_file: My name: wcc014, id: 192.168.147.54, port: 4803
>>>> DL_init_channel: problem in setsockopt to multicast address -285212413
>>>> Exit caused by Alarm(EXIT)
>>>>
>>>> I've read the user guide but it sheds no light on this.
>>>>
>>>> Any help appreciated.
>>>>
>>>> Mark.
>>>
>>>
>>>
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>>
>>
>>
>>
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