OSMF NetStream firing end event too early

HI,
I originally posted this here: http://forums.adobe.com/message/5067347#5067347 but I got no responses and then remembered an OSMF specific forum where I hoped I might find more help!
I've been digging into a bug report where the ends of adverts are clipped by up to three seconds in Android and, after a _lot_ of painful debugging, I have come to the conclusion that the issue is with the underlying NetStream object.
After a bit of jiggery pokery to locate the NetStream on NetStreamLoadTrait, I was able to listen to the changes to NetStream.time and to compare against the TimeTrait values, also to see what events were happening where and when. After placing this code on an Event.ENTER_FRAME handler, I was able to see clearly that there is _ALMOST_ALWAYS_ a huge jump in the last two frames... This equates to clipping off the last few seconds of the video as the jump tends to occur a couple of seconds prior to the end. Having placed break-points in OSMF code, it appears that the end is "correct" in that it is always in response to a NetStream.Play.Stopped... just that the NetStream.Play.Stopped is firing at the wrong time.
Does anyone have _any_ idea what could be causing this? Is it likely to be with the media being supplied (third-party advertsing video...) or the plugin itself?
Thanks,
G

Hi,
Bumping this one in hopes!
This one is a huge show-stopper as _nobody_ will be happy with the potential for losing the terminal three seconds of their adverts upwards of half the number of times they are played!
Seriously, am I the only one to have noticed this?
G

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G

Windows TCP Socket Buffer Hitting Plateau Too Early

Note: This is a repost of a ServerFault Question edited over the course of a few days, originally here: http://serverfault.com/questions/608060/windows-tcp-window-scaling-hitting-plateau-too-early
Scenario: We have a number of Windows clients regularly uploading large files (FTP/SVN/HTTP PUT/SCP) to Linux servers that are ~100-160ms away. We have 1Gbit/s synchronous bandwidth at the office and the servers are either AWS instances or physically hosted
in US DCs.
The initial report was that uploads to a new server instance were much slower than they could be. This bore out in testing and from multiple locations; clients were seeing stable 2-5Mbit/s to the host from their Windows systems.
I broke out iperf
-s on a an AWS instance and then from a Windows client in the office:
iperf
-c 1.2.3.4
[ 5] local 10.169.40.14 port 5001 connected with 1.2.3.4 port 55185
[ 5] 0.0-10.0 sec 6.55 MBytes 5.48 Mbits/sec
iperf
-w1M -c 1.2.3.4
[ 4] local 10.169.40.14 port 5001 connected with 1.2.3.4 port 55239
[ 4] 0.0-18.3 sec 196 MBytes 89.6 Mbits/sec
The latter figure can vary significantly on subsequent tests, (Vagaries of AWS) but is usually between 70 and 130Mbit/s which is more than enough for our needs. Wiresharking the session, I can see:
iperf
-c Windows SYN - Window 64kb, Scale 1 - Linux SYN, ACK: Window 14kb, Scale: 9 (*512)
iperf
-c -w1M Windows SYN - Windows 64kb, Scale 1 - Linux SYN, ACK: Window 14kb, Scale: 9
Clearly the link can sustain this high throughput, but I have to explicity set the window size to make any use of it, which most real world applications won't let me do. The TCP handshakes use the same starting points in each case, but the forced one scales
Conversely, from a Linux client on the same network a straight, iperf
-c (using the system default 85kb) gives me:
[ 5] local 10.169.40.14 port 5001 connected with 1.2.3.4 port 33263
[ 5] 0.0-10.8 sec 142 MBytes 110 Mbits/sec
Without any forcing, it scales as expected. This can't be something in the intervening hops or our local switches/routers and seems to affect Windows 7 and 8 clients alike. I've read lots of guides on auto-tuning, but these are typically about disabling scaling
altogether to work around bad terrible home networking kit.
Can anyone tell me what's happening here and give me a way of fixing it? (Preferably something I can stick in to the registry via GPO.)
Notes
The AWS Linux instance in question has the following kernel settings applied in sysctl.conf:
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.core.rmem_default = 1048576
net.core.wmem_default = 1048576
net.ipv4.tcp_rmem = 4096 1048576 16777216
net.ipv4.tcp_wmem = 4096 1048576 16777216
I've used dd
if=/dev/zero | nc redirecting to /dev/null at
the server end to rule out iperfand
remove any other possible bottlenecks, but the results are much the same. Tests with ncftp(Cygwin,
Native Windows, Linux) scale in much the same way as the above iperf tests on their respective platforms.
First fix attempts.
Enabling CTCP - This makes no difference; window scaling is identical. (If I understand this correctly, this setting increases the rate at which the congestion window is enlarged rather than the maximum size it can reach)
Enabling TCP timestamps. - No change here either.
Nagle's algorithm - That makes sense and at least it means I can probably ignore that particular blips in the graph as any indication of the problem.
pcap files: Zip file available here: https://www.dropbox.com/s/104qdysmk01lnf6/iperf-pcaps-10s-Win%2BLinux-2014-06-30.zip (Anonymised
with bittwiste, extracts to ~150MB as there's one from each OS client for comparison)
Second fix attempts.
I've enabled ctcp and disabled chimney offloading: TCP Global Parameters
Receive-Side Scaling State : enabled
Chimney Offload State : disabled
NetDMA State : enabled
Direct Cache Acess (DCA) : disabled
Receive Window Auto-Tuning Level : normal
Add-On Congestion Control Provider : ctcp
ECN Capability : disabled
RFC 1323 Timestamps : enabled
Initial RTO : 3000
Non Sack Rtt Resiliency : disabled
But sadly, no change in the throughput.
I do have a cause/effect question here, though: The graphs are of the RWIN value set in the server's ACKs to the client. With Windows clients, am I right in thinking that Linux isn't scaling this value beyond that low point because the client's limited CWIN
prevents even that buffer from being filled? Could there be some other reason that Linux is artificially limiting the RWIN?
Note: I've tried turning on ECN for the hell of it; but no change, there.
Third fix attempts.
No change following disabling heuristics and RWIN autotuning. Have updated the Intel network drivers to the latest (12.10.28.0) with software that exposes functioanlity tweaks viadevice manager tabs. The card is an 82579V Chipset on-board NIC - (I'm going to
do some more testing from clients with realtek or other vendors)
Focusing on the NIC for a moment, I've tried the following (Mostly just ruling out unlikely culprits):
Increase receive buffers to 2k from 256 and transmit buffers to 2k from 512 (Both now at maximum) - No change
Disabled all IP/TCP/UDP checksum offloading. - No change.
Disabled Large Send Offload - Nada.
Turned off IPv6, QoS scheduling - Nowt.
Further investigation
Trying to eliminate the Linux server side, I started up a Server 2012R2 instance and repeated the tests using iperf (cygwin
binary) and NTttcp.
With iperf,
I had to explicitly specify -w1m on both sides
before the connection would scale beyond ~5Mbit/s. (Incidentally, I could be checked and the BDP of ~5Mbits at 91ms latency is almost precisely 64kb. Spot the limit...)
The ntttcp binaries showed now such limitation. Using ntttcpr
-m 1,0,1.2.3.5 on the server and ntttcp
-s -m 1,0,1.2.3.5 -t 10 on the client, I can see much better throughput:
Copyright Version 5.28
Network activity progressing...
Thread Time(s) Throughput(KB/s) Avg B / Compl
====== ======= ================ =============
0 9.990 8155.355 65536.000
##### Totals: #####
Bytes(MEG) realtime(s) Avg Frame Size Throughput(MB/s)
================ =========== ============== ================
79.562500 10.001 1442.556 7.955
Throughput(Buffers/s) Cycles/Byte Buffers
===================== =========== =============
127.287 308.256 1273.000
DPCs(count/s) Pkts(num/DPC) Intr(count/s) Pkts(num/intr)
============= ============= =============== ==============
1868.713 0.785 9336.366 0.157
Packets Sent Packets Received Retransmits Errors Avg. CPU %
============ ================ =========== ====== ==========
57833 14664 0 0 9.476
8MB/s puts it up at the levels I was getting with explicitly large windows in iperf.
Oddly, though, 80MB in 1273 buffers = a 64kB buffer again. A further wireshark shows a good, variable RWIN coming back from the server (Scale factor 256) that the client seems to fulfil; so perhaps ntttcp is misreporting the send window.
Further PCAP files have been provided, here:https://www.dropbox.com/s/dtlvy1vi46x75it/iperf%2Bntttcp%2Bftp-pcaps-2014-07-03.zip
Two more iperfs,
both from Windows to the same Linux server as before (1.2.3.4): One with a 128k Socket size and default 64k window (restricts to ~5Mbit/s again) and one with a 1MB send window and default 8kb socket size. (scales higher)
One ntttcp trace
from the same Windows client to a Server 2012R2 EC2 instance (1.2.3.5). here, the throughput scales well. Note: NTttcp does something odd on port 6001 before it opens the test connection. Not sure what's happening there.
One FTP data trace, uploading 20MB of /dev/urandom to
a near identical linux host (1.2.3.6) using Cygwin ncftp.
Again the limit is there. The pattern is much the same using Windows Filezilla.
Changing the iperf buffer
length does make the expected difference to the time sequence graph (much more vertical sections), but the actual throughput is unchanged.
So we have a final question through all of this: Where is this limitation creeping in? If we simply have user-space software not written to take advantage of Long Fat Networks, can anything be done in the OS to improve the situation?

Hi,
Thanks for posting in Microsoft TechNet forums.
I will try to involve someone familiar with this topic to further look at this issue. There might be some time delay. Appreciate your patience.
Thank you for your understanding and support.
Kate Li
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The requested debug (of a succesful call):
2006-09-06 13:27:36 UTC Local7.Debug 10.10.1.251 960443: <009><009>Component = Invoke component
2006-09-06 13:27:36 UTC Local7.Debug 10.10.1.251 960444: <009><009><009>Invoke Id = 22962
2006-09-06 13:27:36 UTC Local7.Debug 10.10.1.251 960445: <009><009><009>Operation = Diversion Leg2
2006-09-06 13:27:36 UTC Local7.Debug 10.10.1.251 960446: <009>Progress Ind i = 0x8183 - Origination address is non-ISDN
2006-09-06 13:27:36 UTC Local7.Debug 10.10.1.251 960447: <009>Calling Party Number i = 0x2181, '3462211214'
2006-09-06 13:27:36 UTC Local7.Debug 10.10.1.251 960448: <009><009>Plan:
2006-09-06 13:27:36 UTC Local7.Debug 10.10.1.251 960449: ISDN, Type:National
2006-09-06 13:27:36 UTC Local7.Debug 10.10.1.251 960450: <009>Called Party Number i = 0xC1, '9209299'
2006-09-06 13:27:36 UTC Local7.Debug 10.10.1.251 960451: <009><009>Plan:ISDN, Type:Subscriber(local)
2006-09-06 13:27:36 UTC Local7.Debug 10.10.1.251 960452: 533213: Sep 6 15:27:45.121: ISDN BR0/1/1 EVENT: process_rxstate: ces/callid 1/0x192A calltype 2 HOST_INCOMING_CALL
2006-09-06 13:27:36 UTC Local7.Debug 10.10.1.251 960453: 533214: Sep 6 15:27:45.121: ISDN BR0/1/1 EVENT: host_incoming_call: call_id 0x192A, Guid = 50AAF3E5965D bchan 0
10.10.1.251 960462: 533223: Sep 6 15:27:45.125: ISDN BR0/1/1 Q931: extract_redirect_orig_called_ie: IE type redirecting num none reason 15 cnt 1 plan -1 type 0 pres 1
2006-09-06 13:27:36 UTC Local7.Debug 10.10.1.251 960463: 533224: Sep 6 15:27:45.125: //-1/xxxxxxxxxxxx/DPM/dpAssociateIncomingPeerCore:
2006-09-06 13:27:36 UTC Local7.Debug 10.10.1.251 960464: Calling Number=3462211214, Called Number=9209299, Voice-Interface=0x46AA9C28,
2006-09-06 13:27:36 UTC Local7.Debug 10.10.1.251 960486: 2: Dial-peer Tag=299
2006-09-06 13:27:36 UTC Local7.Debug 10.10.1.251 960487: 533232: Sep 6 15:27:45.133: //-1/50AAF3E5965D/DPM/dpMatchPeersCore:
2006-09-06 13:27:37 UTC Local7.Debug 10.10.1.251 960489: 533233: Sep 6 15:27:45.133: //-1/50AAF3E5965D/DPM/dpMatchPeersCore:
2006-09-06 13:27:37 UTC Local7.Debug 10.10.1.251 960490: Match Rule=DP_MATCH_DEST; Called Number=299
2006-09-06 13:27:37 UTC Local7.Debug 10.10.1.251 960491: 533234: Sep 6 15:27:45.133: //-1/50AAF3E5965D/DPM/dpMatchPeersCore:
2006-09-06 13:27:37 UTC Local7.Debug 10.10.1.251 960492: Result=Success(0) after DP_MATCH_DEST
2006-09-06 13:27:37 UTC Local7.Debug 10.10.1.251 960494: Result=SUCCESS(0)
2006-09-06 13:27:37 UTC Local7.Debug 10.10.1.251 960495: List of Matched Outgoing Dial-peer(s):
2006-09-06 13:27:37 UTC Local7.Debug 10.10.1.251 960496: 1: Dial-peer Tag=20003
2006-09-06 13:27:37 UTC Local7.Debug 10.10.1.251 960497: 2: Dial-peer Tag=299
2006-09-06 13:27:37 UTC Local7.Debug 10.10.1.251 960498: 533236: Sep 6 15:27:45.137: ISDN BR0/1/1 Q931: TX -> CALL_PROC pd = 8 callref = 0x81
2006-09-06 13:27:37 UTC Local7.Debug 10.10.1.251 960499: <009>Channel ID i = 0x89
2006-09-06 13:27:37 UTC Local7.Debug 10.10.1.251 960500: <009><009>Exclusive, B1
2006-09-06 13:27:37 UTC Local7.Debug 10.10.1.251 960501: 533237: Sep 6 15:27:45.153: ISDN BR0/1/1 Q931: TX -> ALERTING pd = 8 callref = 0x81
2006-09-06 13:27:43 UTC Local7.Debug 10.10.1.251 960502: 533238: Sep 6 15:27:51.825: ISDN BR0/1/1 Q931: TX -> CONNECT pd = 8 callref = 0x81
2006-09-06 13:27:43 UTC Local7.Debug 10.10.1.251 960503: <009>Channel ID i = 0x89
2006-09-06 13:27:43 UTC Local7.Debug 10.10.1.251 960504: <009><009>Exclusive, B1
2006-09-06 13:27:43 UTC Local7.Debug 10.10.1.251 960505: 533239: Sep 6 15:27:51.929: ISDN BR0/1/1 Q931: RX <- CONNECT_ACK pd = 8 callref = 0x01
2006-09-06 13:27:43 UTC Local7.Debug 10.10.1.251 960506: 533240: Sep 6 15:27:51.929: ISDN BR0/1/1 EVENT: process_rxstate: ces/callid 1/0x192A calltype 2 HOST_CONNECT
2006-09-06 13:27:44 UTC Local7.Info 10.10.1.251 960507: 533241: Sep 6 15:27:51.933: %ISDN-6-CONNECT: Interface BRI0/1/1:1 is now connected to 3462211214

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PS:
Here is my script, for completeness
Automatically add the files that are dropped on this applescript to
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To adapt it for a different playlist, just change the name below and save as application.
In addition, you can add this script as a folder action
Author: Gabriel Zachmann, Feb 2010
property playListName : "Hoerspiele"
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to addTheFiles(theFiles)
tell application id "com.apple.iTunes"
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reveal (some playlist whose persistent ID is playID)
repeat with aFile in theFiles
try
add aFile to some playlist whose persistent ID is playID
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-- set new date, so we know later when we copied the files
set the file_path to the quoted form of the POSIX path of aFile
do shell script ("/bin/touch " & file_path)
end repeat
end tell
end addTheFiles
Message was edited by: GabrielZ

folder actions have always been buggy and this has always been an issue when folder actions have to process many files at the same time. it's supposed to have gotten better in snow leopard but it's still very far from being reliable. you can try the following trick to slow down your folder action and make it wait to process individual items before they are all copied. that might (or might not ) help
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iPhone Calender recently started to mash up the dates again. A total reset of the MobileMe Calender sync was needed to sort it out. However, once and again the while creating a new event in the iPhone Calender it does not save it. Often it is needed to re-create it 2-3 times. This does not happen on my Macbook Pro and iMac 27" computer's Calender though. It's a strictly iPhone problem apparently,

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Outlook displays date of birthdays one day too early in MS Office 2007, 2010 and 2013

Hi
We are supporting several clients that has issues with Outlook. Different versions of Windows, Office and different exchange server versions. Some contacts' birthdays
just "magically" changes to one day too early. I have done extensive research with no answer. I have experienced this issue personally as early as about 2005 or 2006 with a Windows Mobile PDA.
Our local time is GMT +2 without daylight-savings. I have checked the settings in Windows (Vista Pro and Win 7 pro
x86 and x64) and the calendar settings, I have reloaded a couple of pc's, created new profiles, installed new server hardware with newer exchange. Even tried a few off-the-wall ideas like resetting all views to default.
Some users' address books are shared, some not. Some uses Apple, Android, BB or Windows phone, some don't. Some connects through VPN, some don't. Some uses
AVG, Avast, Eset Nod, Forticlient, Mcafee, etc....
I have been fighting this problem for months, and can find no conclusive answer that resolves this.
If I manually open the contact and rectify the date, it will stay correct for a very random time period and then shift
again.
I am about to lose a couple of my biggest clients, and probably my job as well, so I need urgent help.
Please no remarks on OS version, Office version or mobile devices, as this is definitely not the issue.
HELP!

Hi,
Have the users check on OWA, does the issue persist? Please also make sure the timezone of Exchange is also properly configured.
I'm not an expert about Exchange, I hope this blog can be helpful:
http://blogs.technet.com/b/fun_with_powershell/archive/2013/04/30/where-is-the-time-zone-property-stored-in-exchange-2010.aspx
To further dig the problem, rectify the date on owa and drop Outlook for a while(or one day), check the result the next day if the problem will come back.
Regards,
Melon Chen
TechNet Community Support

Event for task not defined as start/end event

Hi all,
We get the following error in our inbox although the event seems to work as intended
Event ZIMEC006 APPROVED_REJECTED for task TS81700130 not defined as start/end event
If I go to the task TS81700130, the event APPROVED_REJECTED is defined as a terminating event(under the tab terminating events) with objecttype BO and object ZIMEC006 and the binding is ok
What could be the problem?
Thanks for all help
Hans

Hi,
The BO your using is a custom one,
If Yes Goto the BO, Release that Event,Save and generate the BO.
other wise, if you created a Subtype of the Std. BO, check that Z-event you created is released and the BO delegated to Std. BO, save and generate the BO.
Then try now.
Regards,
Surjith

OSMF NetStream firing end event too early

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