Facebook

Login

Support Sailonline

If you haven't already - join the SAILONLINE YACHT CLUB!

Please also consider making a donation - all amounts are greatly appreciated!

Board » Technical Support » Keeping the client in synch

Posted by
outlaw


Users avatar

Posts
33
Registered at
2012-06-01 13:37:55
2014-01-09 10:12:37 - Keeping the client in synch
This is quite urgent with the upcoming Sprint Cup races.

I'm also not sure if you guys have the ability to change the client on short notice...

Anyway, boat position on the server is updated every 10s. The client queries boat.xml every 15.2s. This leaves us in the dark on the real position of our boats, critical for sharp roundings like Orno 1.

My suggestion is to add a "time to next update" field to the boat.xml, and change the client query timing accordingly.
Posted by
kroppyer


Users avatar

Posts
347
Registered at
2010-02-05 15:25:55
2014-01-09 15:36:50 - Re: Keeping the client in synch
You can have two clients open at the same time, if you time it right, they'll poll the server every 7 or 8 seconds so you'll never skip a jump.

I don't know the server or client code, but from what I've heard it's probably harder than it seems to sync them. It's almost always harder than it seems with software development ;)
Posted by
hmm


Users avatar

Posts
118
Registered at
2011-11-03 13:35:22
2014-01-09 22:34:01 - Re: Keeping the client in synch
How often the server updates the boats depends on the server load, so when the position is updated it is not known when the next update happens.

With the new server the load has been fortunately mostly low, so the updates happen mostly every 10 seconds but there is no guarantee on that.

I don't think this issue is really worth of updating the client. When we are starting to sync requests by the second also the possible network lag should be taken into account so doing this "properly" would not really be that easy.

The current client is same for all and it is something everyone is familiar by now. However, this can be taken into account when planning client updates or new clients in the future. Especially ability to also tell the client to update less frequently during bigger server load could be useful.
Posted by
outlaw


Users avatar

Posts
33
Registered at
2012-06-01 13:37:55
2014-01-10 08:47:29 - Re: Keeping the client in synch
A dedicated racer can work around the issue, casual and new users are a different matter. For example I could imagine a NNYC member signing up for Lake Winnebago and being frustrated by the client.

While exact position doesn't matter in open water SOL has entirely too many coastal and round the buoys races to call it irrelevant.

Regarding prediction, last interval + 2s should be reliable enough, unless load spikes are really extreme. You would also get some savings from less active boats (30s update interval).

Lastly you should consider incentives, having players run two clients seems undesirable etc. (And reloading to force the new wx, on what is probably the maximum load period to begin with...)
Posted by
hmm


Users avatar

Posts
118
Registered at
2011-11-03 13:35:22
2014-01-11 18:15:37 - Re: Keeping the client in synch
If anyone volunteers to change the client code, we might consider how to handle this issue.
Posted by
outlaw


Users avatar

Posts
33
Registered at
2012-06-01 13:37:55
2014-01-23 15:20:08 - Re: Keeping the client in synch
bump.

I unfortunately have zero experience with flash, that said I could give it a spin if no one else will.
Posted by
Svein


Users avatar

Posts
84
Registered at
2009-05-04 15:09:20
2014-01-30 20:39:48 - Re: Keeping the client in synch
This is relevant, if not imminent, issue.
My understanding is that "next" client version is not likely to be in flash environment, but maybe HTML5 or something else - not my field really:)

Please login to post a reply.

Races

Next Race: 00d 00h 00m

Current Races:

Roma per Tutti 2026


Sailonline are honoured and delighted to have been asked to partner an online first Roma per Tutti yacht race with organizing yacht club, Circolo Nautico Riva di Traiano . In real life, this will be the 33rd edition of this 540nm offshore race from Rome’s Riva di Traiano to the Aeolian Islands and back. Online, the race will not only be our first partnership with CN Riva di Traiano, but also the second race of our Magical Mediterranean series. A number of Mini 6.50s have been entered for the 33rd edition of the Roma per Tutti; so our own vintage Mini is also our virtual yacht of choice for this one.
Race #2019
INFOby brainaid.de
Mini 6.50 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: MED - SUPBUD - SYC
Race starts: Apr 11th 10:00 Registration Open!
▶ Flash
GO TO RACE

Rommel by Balloon 2026 - Through the Sahara


Generalfeldmarschall Johannes Erwin Eugen Rommel may have been that chivalrous, gallant tank commander of legend, led astray by the Prussian military traditions of loyalty and chain of command, but one thing he wasn’t, was mad. So, let’s do it anyway – not stick to the coast and the battle for logistical superiority – but depart the oases of Siwa south west into the desert for Agadez and its uranium. And let’s go by balloon, it’s only 2500km (1250nm)!
Race #1973
INFOby brainaid.de
SOL Balloon PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: BOL - SYC
Race starts: Apr 07th 13:00 Registration Open!
▶ Flash
GO TO RACE

Falklands to Tasmania 2026

Welcome to yet another all-new route. This next race is part of our Ocean Championship as well as the ROW series. Falklands to Tasmania, is like last year's island to island. It’s one of the longer ones 6400nm, more than half way around the world (and the Antarctica). It starts the 2026 OCQ2, and will be sailed in our Steinlager 2, contrary to prior notice.
Race #2021
INFO by brainaid.de
Steinlager 2 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ2 - ROW - OCCH - SYC
Race starts: Apr 06th 11:00 Registration Open!
▶ Flash
GO TO RACE

Go to race archive

SYC Ranking

  1. Sailonline Yacht Club Member KaSToR
  2. Sailonline Yacht Club Member WRmirekd
  3. Sailonline Yacht Club Member rafa
  4. Sailonline Yacht Club Member rumskib
  5. Sailonline Yacht Club Member CriticalHippo
  6. Sailonline Yacht Club Member CollegeFund
  7. Sailonline Yacht Club Member Panpyc
  8. Sailonline Yacht Club Member Sax747
  9. Sailonline Yacht Club Member sassy63
  10. Sailonline Yacht Club Member vida

View full list

Series

Mobile Client

SYC members have the benefit of access to our mobile/lightweight web client!

The mobile client