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< Esato Forum Index > Sony Ericsson / Sony > Symbian phones > P1i fails on m.youtube.com Bookmark topic

I have been testing this, and i've noticed that the media player app will stop without warning and the tell you there is an error with the file. Given that I am more than confident that its not my adsl or router loosing any packets I believe this to be a fault with the media viewer app.

Unfortunately it is not consitent.

@Nipsen

What stream do you get this error with? I'd be happy to test it tommorrow evening when I get back from work.
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Posted: 2007-10-14 23:05:13
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I've been to a bar didn't make any setting just connected and played a few clips.
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Posted: 2007-10-14 23:13:50
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..well, you can try bbc radio streams
http://www.bbc.co.uk/bbc7/listenagain/saturday/
, and c-span streams. They die for me after a few minutes, and about at the same time every retry. But you're right, it's not consistent. Sometimes it's eight minutes, sometimes it's a bit longer, or shorter... It's like the first realmedia plugins, it seems to me. Just failing for no reason when the packet stream had to handle too many corrections, and things of that sort.
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Posted: 2007-10-14 23:28:33
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@701

Indeed, this is because the router has a decent firewall - mine didn't the stupid thing thought the stream was a Denial of Service attack

@Nipsen

Yes, i remember, maybe thats what real did with their first (not so good) code? It took several releases for the real player streaming to actually start working well, maybe the UIQ player is based on this rather flawed code.

[edit]
yes, i see what you mean. It played 3-6 mins then either errored out or just exited. Having said that i did kick of a large download from my laptop (also wifi) which might have affected it i suppose.

Alternatively I guess the IP Stack in UIQ could just be a bit naff - rather like the first IP stacks on win95?

[ This Message was edited by: pnf1973 on 2007-10-14 23:13 ]
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Posted: 2007-10-14 23:41:32
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I think we can safely say it's not that bad.

But that would explain why some connections drop out and things go slow, and so on. Still, I don't have these problems on the school's wlan.. So, maybe it's a combination of wlan implementation (resets on the network diagram screw things up) and the ip- queue?
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Posted: 2007-10-15 03:23:28
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Given the number of people complaining of WLan issues then there is something going on. I think much of it is down to people routers - as previously discussed - but a good part of it is the transmit power on the p1, which I think has been set rather low.

The reasoning for this will be quite simple, at the moment I think you can get between 4-5 hours constant wlan usage from the p1 - if SE upped the transmit power to the point where the wlan on the P1 worked more like a laptop computers wlan (which is what most people seem to expect it to be like) then the power drain will be such that i wouldn't be suprised to see the battery life drop by half or more.

Of course, hardly anyone actually positions their wlan router properly either - how many people know that the wlan signal radiates down from the antenna? Myself I'm gonna try getting a better antenna for my router and see if that improves matters any.
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Posted: 2007-10-15 10:40:38
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Don't get me started on WLan. Sometimes it doesn't connect, sometimes it does. Absolutelly random.
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Posted: 2007-10-15 11:05:44
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OK, is this to a router you can configure? Have you tried changing channels on it? If there are other wlans in your vicinity you could be getting some interference from them.

You could also try statically assigning your IP and DNS settings on the P1 and reserving a IP address on the routers DCHP for it - alot of routers seem to take too long to respond to dchp requests for the p1's liking.
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Posted: 2007-10-15 11:27:57
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No.. I definitively think it has something to do with the thread priority. I tried coreplayer for streaming an mp3- podcast today. And it has the same problems if you switch the program to the background while you're connecting. But it tends to work pretty good if you just leave it alone. So I'm sure it's possible the problems show up more easily with a noisy wlan- connection, but it's not what causes the hangs.
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Posted: 2007-10-15 16:05:38
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It is possible, although now I doubt it myself. The network transport should be fairly easy on the CPU, you are after all only reading small packets of data from a socket. Also don't forget that the actual TCP stack should be part of symbian, rather than UIQ, so if its a problem at that level we would see it across all symbian handsets not just sony ones.

I am starting to think that SE have not implemented the WLan very well at the driver level, with some problems with timeouts and retry thresholds. I am currently investigating settings for the RTS threshold (in the advanced settings for the WLan account) which - if set right - might just help matters. At the moment the p1 defaults to quite a high threshold (over 2k) on busier wlans this really ought to be lower to help with overall performance. I am also planning to investigate exactly what the "power save" function does in the P1.
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Posted: 2007-10-15 20:42:55
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