[squid-users] Youtube Issue!

Hello Amos,

Finally, I have almost captured the most YouTube Videos except
something I want to get some asistance from you .

As I have tested before and tried so many times .. Chudy's script is outdated.

After testinig and logging Youtube Videos . I finally have found
something not being fully cached . If you still remember I have said
before with my old messages that ID isnt being captured in all places
but its okay I have done this . I will post my details after I
completelly finish them.

Could you please explain to me whats happening here?

If &range=13-2375679 was found in a URL then Squid doesnt understand
how to cache the full video .. as it only cache the first 13 seconds I
guess! and then it stops . If I try to download this finished cached
movie then you notice its size about 2.2 MB . You try to remove it
from cache then Squid cant even find it as it claims not cached but
shows TCP_HIT in access.log . STRANGE!

Now look into this URL:
-------------------------------

"http://o-o.preferred.orange-par1.v4.lscache7.c.youtube.com/videoplayback?sparams=id%2Cexpire%2Cip%2Cipbits%2Citag%2Csource%2Calgorithm%2Cburst%2Cfactor%2Ccp&fexp=907605%2C912600%2C915002&algorithm=throttle-factor&itag=34&ip=84.0.0.0&burst=40&sver=3&signature=8223490C23E48CB708E04666E4
A550422757CEC6.9D8D78E66DD14FEFC4B5F960F493ED4CDFD7C51C&source=youtube&expire=13
22348400&key=yt1&ipbits=8&factor=1.25&cp=U0hRR1NPVl9FSkNOMV9LSVpFOkpsV3BkS1B1ZXN
F&id=e120643085f56831&range=13-2375679"

HTTP/1.0 200 OK
Last-Modified: Fri, 27 Nov 2009 12:44:54 GMT
Content-Type: video/x-flv
Date: Sat, 26 Nov 2011 16:06:29 GMT
Expires: Sat, 26 Nov 2011 16:06:29 GMT
Cache-Control: private, max-age=24511
Accept-Ranges: bytes
Content-Length: 2375667
X-Content-Type-Options: nosniff
Server: gvs 1.0
X-Cache: MISS from Peer6
X-Cache-Lookup: MISS from Peer6:3128
Connection: close

Whats the job of "Accept_ranges: bytes" here?

And the very confusion again you can see another similar URL with the
same "/videoplayback?.*(id)" and here comes the ID inthe end of this
URL then moves temporary just . I must mention that this URL sends the
FLV url as Squid already read it in access.log and then it dds
&ir=1&playretry=1 or pr=1&playretry which means Squid would be
confused to cache it 2 times (FLV).

EXAMPLE:
---------------

"http://o-o.preferred.orange-par1.v3.lscache3.c.youtube.com/videoplayback?sparams=id%2Cexpire%2Cip%2Cipbits%2Citag%2Csource%2Calgorithm%2Cburst%2Cfactor%2Ccp&fexp=908525%2C910207%2C916201&algorithm=throttle
-factor&itag=34&ip=84.0.0.0&burst=40&sver=3&signature=0489805DCC95F6EADBA9D43C3F
D8C107FC768662.73AA6897FE78CF78BE7819E089F1A4FC47534C7D&source=youtube&expire=13
22344800&key=yt1&ipbits=8&factor=1.25&cp=U0hRR1NPUl9FSkNOMV9LSVZJOmdmQWdwWC01dlp
n&id=283246f338ece5ad"

HTTP/1.0 302 Moved Temporarily
Last-Modified: Wed, 02 May 2007 10:26:10 GMT
Date: Sat, 26 Nov 2011 15:50:47 GMT
Expires: Sat, 26 Nov 2011 15:50:47 GMT
Cache-Control: private, max-age=900
Location: http://r9.orange-par2.c.youtube.com/videoplayback?sparams=id%2Cexpire%
2Cip%2Cipbits%2Citag%2Csource%2Calgorithm%2Cburst%2Cfactor%2Ccp&fexp=908525%2C91
0207%2C916201&algorithm=throttle-factor&itag=34&ip=84.0.0.0&burst=40&sver=3&sign
ature=0489805DCC95F6EADBA9D43C3FD8C107FC768662.73AA6897FE78CF78BE7819E089F1A4FC4
7534C7D&source=youtube&expire=1322344800&key=yt1&ipbits=8&factor=1.25&cp=U0hRR1N
PUl9FSkNOMV9LSVZJOmdmQWdwWC01dlpn&id=283246f338ece5ad&ir=1
X-Content-Type-Options: nosniff
Content-Type: text/html
Server: gvs 1.0
Age: 2068
Content-Length: 0
X-Cache: HIT from Peer6
X-Cache-Lookup: HIT from Peer6:3128
Connection: close

NOTE that its "content-length=0" and Squid thinks that its a video
..If we could especially ignore or deny caching headers with 0
size!.In that case I will try to add &ir=1 &pr=1 to the script .

My real question was focused on Accept-Ranges so If you could hand me
over this one .

Ghassan
Received on Sat Nov 26 2011 - 16:32:22 MST