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:

Silverrudder 2025


Ahoy, SOLers! Get ready for the epic Silver Rudder – Challenge of the Sea! This 125nm single-handed race around Denmark’s island of Funen is back—shallow waters, narrow straits, and shifting winds await. This year, we trade up to our single-handed X-99s—can you master their power where precision counts most? It’s the world’s largest solo regatta, and your virtual helm is calling! Chart your course, trust your instincts, and race for glory in this ultimate test of seamanship!

It is imperative that you read AND understand these special Starting Conditions for SILVERRUDDER 2025:
Starting Conditions!!
Race #1948
INFO by brainaid.de
X-99 Single-handed PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC
Race starts: Sep 19th 09:00 Registration Open!

▶ Flash
GO TO RACE

Rome to Tripoli 2025


The next race in the ARCH series will take us almost straight from Rome to Tripoli. But don't expect this 550nm race to be an easy one. The Mediterranean always offers some surprises. So let's prepare your Lagoon 55 with due care and... Fair Winds.
Race #1943
INFO from brainaid.de
Lagoon 55 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
ARQ3 - ARCH - SUPSOL – SYC
Race starts: Sep 15th 17:00 Registration Open!
▶ Flash
GO TO RACE

Carib Rum Run 2025

Welcome to the Caribbean and Sailonline’s legendary Carib Rum Run! This year we trade tall ships for pure speed as we race our sleek Santa Cruz 70s on a 1759nm slalom through the rum islands. Yer mission: plunder barrels from the region’s finest distilleries and deliver ‘em to the rum-thirsty sands of Cancun, Mexico. Finish on or before International Talk Like a Pirate Day, 19 September, to etch yer name in legend! Join SYC before race end and ye scallywags can disguise yer boat with a pirate name for this race only! Hoist the sails, sharpen yer cutlasses—the rum run awaits!
Race #1944
INFO by brainaid.de
Santa Cruz 70 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC
Race starts: Sep 15th 00:00 Registration Open!
▶ Flash
GO TO RACE

Roslagen TIMED Sea Race

Welcome to quite possibly the most challenging TIMED race of the year. This month finds us in Sweden with lots of islands and narrow passages when we sail our Seacart 30 trimaran over the 86nm from Lidingö outside Stockholm to the beautiful coastal village of Öregrund. Consider yourself a winner if you complete the course nonstop! This is a TIMEDrace so you may RE-REGISTER HEREto try again after finishing a run. You will have 13 days and 11 hours to test your skill and decision making after the race opens.
Race #1945
INFO by brainaid.de
Seacart 30 Particulars
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
TRQ3 - TRCH - SUPSOL - SYC
Race starts: Sep 07th 12:00 Registration Open!
▶ Flash
GO TO RACE

Great Nicobar to Marion Island 2025

The Adventure Continues – Leg #6 of the RWW Series.
We’re setting sail on the next stage of the RWW Series: a 4,400-nautical-mile passage from Great Nicobar to Marion Island. This demanding leg will test endurance, strategy, and seamanship at the highest level. As part of the 2025 Ocean Championship, this marks the ninth legendary challenge in the series — and one of the most exhilarating yet. The race will be contested aboard the Archer 78’ ketch, a vessel built to push sailors to their limits across the vast Indian Ocean.
PRIZE: SMPF
Race #1942
INFO by brainaid.de
Archer 78 PARTICULARS    
WX Updates:
0430 / 1030 / 1630 / 2230    
Ranking: OCQ3 - RWW - OCCH - SUPSOL - SYC
Race starts: Sep 01st 11:00 Registration Closed
▶ Flash
GO TO RACE

Go to race archive

SYC Ranking

  1. Sailonline Yacht Club Member vida
  2. Sailonline Yacht Club Member WRmirekd
  3. Sailonline Yacht Club Member CriticalHippo
  4. Sailonline Yacht Club Member rafa
  5. Sailonline Yacht Club Member KaSToR
  6. Sailonline Yacht Club Member Kipper1258
  7. Sailonline Yacht Club Member BRENTGRAY
  8. Sailonline Yacht Club Member Sax747
  9. Sailonline Yacht Club Member Panpyc
  10. Sailonline Yacht Club Member CollegeFund

View full list

Series

Mobile Client

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

The mobile client