[Dxspider-support] HamClock show/heading update

[Keith Maton]

Dirk,

This is really interesting about multiple connections.  I’ve just watched a video about Log4OM and noticed the Cluster management pane where it’s possible to select up to ten clusters!  I’ve just looked in the manual for it and it says "The Telnet cluster in Log4OM V2 will connect to many different cluster and skimmer servers simultaneously and will aggregated <sic> the results to provide a high quality list of DX spots without unnecessary duplicates”

The example screenshot in the manual shows four connections to different nodes.

I’ve not been able to test this because I don’t have a Windows PC but this is a bit overkill, isn't it?

73 Keith




> On 17 Jan 2024, at 14:39, Dirk Koopman via Dxspider-support <dxspider-support at tobit.co.uk> wrote:
> 
> *snip* . 
> 
> The (default) limit of three simultaneous connections to different nodes was arrived at many years ago through experiment and debate. In those days, there was still some justification for multiple connections as the internet was slower and (in places) a bit unreliable. Those days are long gone and that is no longer the case. As far as I am concerned all multiple connections achieve is an increase the duplicate traffic flowing from nodes (which client programs don't always deduplicate properly). No one has demonstrated any advantage to having more than one connection in terms of speed of arrival of spots - which I presume is the point of having more. Two connections provide resilience in connection to the wider cluster (useful in contests) but not much else.  
> 
> The kicker is that all major nodes already have have many interconnections to other nodes. They manage this diversity so that a client user - does - not - need - to - roll their own "solution". If a user thinks that they can get a better result by doing something themselves then I would a) like them to try one the major nodes in the UK, Spain, Germany and other European countries first and then b) if they can demonstrate an advantage of more than a second connecting to another node, then communicate with your local node and ask *them* to connect to that node rather than doing it yourself. This will then help everyone.
> 
> My 2p worth...
> 
> Dirk G1TLH
> 
> On 17/01/2024 13:52, du3tw via Dxspider-support wrote:
>> Well done Keith 
>> 
>> Such a refreshing change from toxic and un-constructive posts with sadly abound these days … 
>> 
>> 
>> 
>>> On 17 Jan 2024, at 21:49, Keith Maton via Dxspider-support <dxspider-support at tobit.co.uk> <mailto:dxspider-support at tobit.co.uk> wrote:
>>> 
>>> Hi Dirk,
>>> 
>>> No, nothing wrong with it, it works perfectly but if you read back through some messages to this reflector, there have been complaints about HamClock sending a show/heading after every spot so it can use the response to plot the spotted callsign on a map. This change stops that and the calculation is done locally on the HamClock.
>>> 
>>> Now HamClock will be very quiet, will only issue a handful of commands on connect and that’s about it.
>>> 
>>> 73 Keith
>>> 
>>> 
>>>> On 17 Jan 2024, at 11:52, Dirk Koopman via Dxspider-support <dxspider-support at tobit.co.uk> <mailto:dxspider-support at tobit.co.uk> wrote:
>>>> 
>>>> Is there something wrong with the show/heading command?
>>>> 
>>>> On 17/01/2024 08:24, Keith Maton via Dxspider-support wrote:
>>>>> As previously mentioned, I’ve been in regular contact with the author of HamClock and following feedback, I am beta testing a version of HamClock which no longer uses the show/heading command for locating stations and plotting them on the map.  It now does all the calculations locally.
>>>>> 
>>>>> When a HamClock initially connects to a node, it sends the following:
>>>>> 
>>>>> 1705478550^(DXCommand) G6NHU-10 connected from 192.168.1.137 cols 80
>>>>> 1705478550^(progress) CMD: 'set/qra JO01ou' by G6NHU-10 ip: 192.168.1.137 1mS
>>>>> 1705478550^(progress) CMD: 'set/location 51 50 N 1 13 E' by G6NHU-10 ip: 192.168.1.137 1mS
>>>>> 1705478550^(progress) CMD: 'unset/here ' by G6NHU-10 ip: 192.168.1.137 0mS
>>>>> 
>>>>> And that’s it.  The only other interaction it will have with the node is that if there is no traffic passed in a ten minute period, it does this:
>>>>> 
>>>>> 1705466270^(progress) CMD: 'ping ' by G6NHU-10 ip: 192.168.1.137 0mS
>>>>> 
>>>>> Once this has gone through testing and rolls out, it will rely on the HamClock owners to update their software.  Elwood feels that the half-life for HamClock updates is a couple of months so it will take a while for the changes to pickle through but we should start seeing a decrease in show/heading commands straight away and that decrease will continue as more people update.
>>>>> 
>>>>> Hopefully this will satisfy everyone.
>>>>> 
>>>>> 73 Keith G6NHU
>>>>> 
>>>>> 
>>>>> 
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