Access-Control-Allow-Origin error while downloading dubbed videos

[radinamatic]

I'm not really sure if this a KA Lite or contentpack issue, but we have the CORS problem, again, so far only on dubbed videos.

System: Ubuntu 16.10
Version: 0.17b5
Tested on Spanish and pt-PT. English videos download fine.

[radinamatic]

Not sure if this could help or there is even simpler solution, but I found it a while back, after we had this issue for the first time: crossorigin="anonymous"

@mrpau-dev
@benjaoming

[radinamatic]

I went through the usual testing sequence with unsigned OSX installer by @mrpau-eduard on both Yosemite and Mavericks, and then one more try on Ubuntu 15.10 with 0.17b5 by @benjaoming and did not see this CORS error again. So no idea if it was an one-time thing, but it's not there anymore... 😉

[radinamatic]

Seeing this again in 0.17b5 on Windows, even while downloading English videos. Still not sure if this is a server or OS issue...

[benjaoming]

@radinamatic great find, I think this is a real issue, the Could not connect to central server message is most likely due to this?

[radinamatic]

[INFO] [2017-02-02 03:31:36,809] cherrypy.access.97129968: 127.0.0.1 - - [02/Feb
/2017:03:31:36] "GET /static/images/distributed/circle-empty.png HTTP/1.1" 304 -
 "http://127.0.0.1:8008/update/videos/?lang=es" "Mozilla/5.0 (Windows NT 6.3; rv
:50.0) Gecko/20100101 Firefox/50.0"
[INFO] [2017-02-02 03:31:55,918] kalite: Cancelling process videodownload
[INFO] [2017-02-02 03:31:55,950] kalite: Cancelling process videodownload

### Here I (thought I cancelled the download of English "Counting" videos and) 
### started the same for Spanish) 

[INFO] [2017-02-02 03:31:57,763] kalite: Downloading 'Comparing numbers of objec
ts'
[INFO] [2017-02-02 03:33:39,153] kalite: Downloading 'Counting in order'
[INFO] [2017-02-02 03:34:13,918] kalite: Descargando 'Counting in order'
[INFO] [2017-02-02 03:36:17,654] kalite: Downloading 'Counting by category'
[INFO] [2017-02-02 03:37:17,543] kalite: Downloading 'Counting by category'
[INFO] [2017-02-02 03:37:52,028] kalite: Descargando 'Counting by category'
[ERROR] [2017-02-02 03:39:10,778] kalite: No content database file found
[INFO] [2017-02-02 03:39:10,809] kalite: Error in downloading UA975j_qsTQ: datab
ase is locked; continuing to next video.
[WARNING] [2017-02-02 03:39:10,903] kalite: Tried to remove UA975j_qsTQ from fil
e queue but found tJrSILRXOUc instead.
[ERROR] [2017-02-02 03:39:14,605] kalite: No content database file found
[INFO] [2017-02-02 03:39:14,605] kalite: Error in downloading UA975j_qsTQ: datab
ase is locked; continuing to next video.
[WARNING] [2017-02-02 03:39:14,653] kalite: Tried to remove UA975j_qsTQ from fil
e queue but found tJrSILRXOUc instead.
[INFO] [2017-02-02 03:40:59,262] kalite: Downloading 'Comparing numbers on the n
umber line'
[INFO] [2017-02-02 03:41:04,621] kalite: Downloading 'Comparing numbers on the n
umber line'
[INFO] [2017-02-02 03:42:07,089] kalite: Descargando 'Comparing numbers on the n
umber line'
[INFO] [2017-02-02 03:44:39,092] kalite: Downloading 'Counting objects 1'
[INFO] [2017-02-02 03:45:23,230] kalite: Downloading 'Counting objects 1'
[INFO] [2017-02-02 03:46:06,121] kalite: Descargando 'Counting objects 1'
[INFO] [2017-02-02 03:48:35,137] kalite: Downloading 'Missing numbers between 0
and 120'
[INFO] [2017-02-02 03:50:03,588] kalite: Descargando 'Missing numbers between 0
and 120'
[INFO] [2017-02-02 03:50:10,339] kalite: Downloading 'Missing numbers between 0
and 120'
[INFO] [2017-02-02 03:52:42,683] kalite: Downloading 'Number grid'
[INFO] [2017-02-02 03:53:22,355] kalite: Downloading 'Number grid'
[INFO] [2017-02-02 03:53:30,869] kalite: Downloading 'Counting objects 2'
[INFO] [2017-02-02 03:53:46,809] kalite: Downloading 'Counting in pictures'
[ERROR] [2017-02-02 03:54:01,526] kalite: No content database file found

### Did it dissapear or got locked?

[INFO] [2017-02-02 03:54:01,542] kalite: Error in downloading 9XZypM2Z3Ro: datab
ase is locked; continuing to next video.
[WARNING] [2017-02-02 03:54:01,572] kalite: Tried to remove 9XZypM2Z3Ro from fil
e queue but found EUqhLxFccbM instead.
[ERROR] [2017-02-02 03:54:05,135] kalite: No content database file found
[INFO] [2017-02-02 03:54:05,135] kalite: Error in downloading leDYnoNSvD4: datab
ase is locked; continuing to next video.
[WARNING] [2017-02-02 03:54:05,417] kalite: Tried to remove leDYnoNSvD4 from fil
e queue but found __nkbr6DeTg instead.
[ERROR] [2017-02-02 03:54:10,619] kalite: No content database file found
[WARNING] [2017-02-02 03:54:10,683] kalite: Tried to remove leDYnoNSvD4 from fil
e queue but found __nkbr6DeTg instead.
[ERROR] [2017-02-02 03:54:14,309] kalite: No content database file found
[INFO] [2017-02-02 03:54:14,322] kalite: Error in downloading EUqhLxFccbM: datab
ase is locked; continuing to next video.
[WARNING] [2017-02-02 03:54:14,559] kalite: Tried to remove EUqhLxFccbM from fil
e queue but found leDYnoNSvD4 instead.
[ERROR] [2017-02-02 03:54:19,683] kalite: No content database file found
[INFO] [2017-02-02 03:54:19,683] kalite: Error in downloading PEeUTQ0Gri8: datab
ase is locked; continuing to next video.
[WARNING] [2017-02-02 03:54:19,713] kalite: Tried to remove PEeUTQ0Gri8 from fil
e queue but found UA975j_qsTQ instead.
[INFO] [2017-02-02 03:54:21,621] kalite: Descargando 'Number grid'
[ERROR] [2017-02-02 03:54:24,480] kalite: No content database file found
[INFO] [2017-02-02 03:54:24,496] kalite: Error in downloading __nkbr6DeTg: datab
ase is locked; continuing to next video.
[WARNING] [2017-02-02 03:54:25,137] kalite: Tried to remove __nkbr6DeTg from fil
e queue but found PEeUTQ0Gri8 instead.
[ERROR] [2017-02-02 03:54:33,369] kalite: No content database file found
[INFO] [2017-02-02 03:54:33,369] kalite: Error in downloading EUqhLxFccbM: datab
ase is locked; continuing to next video.
[WARNING] [2017-02-02 03:54:33,417] kalite: Tried to remove EUqhLxFccbM from fil
e queue but found leDYnoNSvD4 instead.
[ERROR] [2017-02-02 03:54:36,776] kalite: No content database file found
[INFO] [2017-02-02 03:54:36,776] kalite: Error en la descarga de 9XZypM2Z3Ro: da
tabase is locked; pasando al siguiente video.
[WARNING] [2017-02-02 03:54:36,855] kalite: Tried to remove 9XZypM2Z3Ro from fil
e queue but found EUqhLxFccbM instead.
[INFO] [2017-02-02 03:54:37,762] kalite: Descargando 'Contar objetos (parte 2)'
[ERROR] [2017-02-02 03:54:38,322] kalite: No content database file found
[INFO] [2017-02-02 03:54:38,338] kalite: Error in downloading UA975j_qsTQ: datab
ase is locked; continuing to next video.
[WARNING] [2017-02-02 03:54:39,213] kalite: Tried to remove UA975j_qsTQ from fil
e queue but found tJrSILRXOUc instead.
[ERROR] [2017-02-02 03:54:45,230] kalite: No content database file found
[INFO] [2017-02-02 03:54:45,230] kalite: Error in downloading y7-Fveg6e-A: datab
ase is locked; continuing to next video.
[WARNING] [2017-02-02 03:54:46,010] kalite: Tried to remove y7-Fveg6e-A from fil
e queue but found xpN-wvSwKdM instead.
[INFO] [2017-02-02 03:54:46,667] kalite: Downloading 'Comparar números en la rec
ta numérica'
[INFO] [2017-02-02 03:54:51,510] kalite: Downloading 'Contar en orden'
[INFO] [2017-02-02 03:55:05,808] kalite: Downloading 'Contar en imágenes'
[INFO] [2017-02-02 03:55:19,765] kalite: Downloading 'Números faltantes entre 0
y 120'
[INFO] [2017-02-02 03:55:37,651] kalite: Descargando 'Contar con números pequeño
s'
[INFO] [2017-02-02 03:55:49,463] kalite: Descargando 'Comparar números de objeto
s'
[ERROR] [2017-02-02 03:56:07,167] kalite: No content database file found
[INFO] [2017-02-02 03:56:07,167] kalite: Error en la descarga de V94Po5OpUDo: da
tabase is locked; pasando al siguiente video.
[WARNING] [2017-02-02 03:56:08,713] kalite: Tried to remove V94Po5OpUDo from fil
e queue but found 8dGFBkOPOCc instead.
[INFO] [2017-02-02 03:56:09,512] kalite: Descargando 'Contar objetos (parte 1)'
[ERROR] [2017-02-02 03:56:12,198] kalite: No content database file found
[INFO] [2017-02-02 03:56:12,214] kalite: Error in downloading UkGIKRPafII: datab
ase is locked; continuing to next video.
[WARNING] [2017-02-02 03:56:12,855] kalite: Tried to remove UkGIKRPafII from fil
e queue but found ifIrWXKMjns instead.
[ERROR] [2017-02-02 03:56:17,526] kalite: No content database file found
[INFO] [2017-02-02 03:56:17,526] kalite: Error in downloading fEgh1fi_pyQ: datab
ase is locked; continuing to next video.
[WARNING] [2017-02-02 03:56:20,855] kalite: Tried to remove fEgh1fi_pyQ from fil
e queue but found V94Po5OpUDo instead.
[ERROR] [2017-02-02 03:56:22,010] kalite: No content database file found
[INFO] [2017-02-02 03:56:22,026] kalite: Error in downloading 5uKEDgGakTU: datab
ase is locked; continuing to next video.
[WARNING] [2017-02-02 03:56:22,417] kalite: Tried to remove 5uKEDgGakTU from fil
e queue but found fEgh1fi_pyQ instead.
[INFO] [2017-02-02 03:56:23,588] kalite: Downloading 'Contar por categoría'
[ERROR] [2017-02-02 03:56:33,433] kalite: No content database file found
[INFO] [2017-02-02 03:56:33,448] kalite: Error en la descarga de 8dGFBkOPOCc: da
tabase is locked; pasando al siguiente video.
[WARNING] [2017-02-02 03:56:33,588] kalite: Tried to remove 8dGFBkOPOCc from fil
e queue but found 94IaEV2z1iM instead.
[ERROR] [2017-02-02 03:56:35,230] kalite: No content database file found
[INFO] [2017-02-02 03:56:35,244] kalite: Error in downloading V94Po5OpUDo: datab
ase is locked; continuing to next video.
[WARNING] [2017-02-02 03:56:35,635] kalite: Tried to remove V94Po5OpUDo from fil
e queue but found 8dGFBkOPOCc instead.
[INFO] [2017-02-02 03:56:36,776] kalite: Downloading 'Cuadrícula de números'
[ERROR] [2017-02-02 03:56:41,683] kalite: No content database file found
[INFO] [2017-02-02 03:56:41,698] kalite: Error in downloading 94IaEV2z1iM: no su
ch table: item; continuing to next video.
[WARNING] [2017-02-02 03:56:42,042] kalite: Tried to remove 94IaEV2z1iM from fil
e queue but found IkzzUQD4kuU instead.
[INFO] [2017-02-02 03:56:43,012] kalite: Downloaded 18 of 25 videos successfully
.
[INFO] [2017-02-02 03:56:43,012] kalite: Downloaded 16 of 26 videos successfully
.

### This is confusing, there's only 10 videos in the "Counting" topic... 


[INFO] [2017-02-02 03:56:45,746] kalite: Error en la descarga de IkzzUQD4kuU: NO
T NULL constraint failed: item.size_on_disk; pasando al siguiente video.
[WARNING] [2017-02-02 03:56:45,996] kalite: Tried to remove IkzzUQD4kuU from fil
e queue, but was empty instead.
[INFO] [2017-02-02 03:56:45,996] kalite: 16 videos descargados satisfactoriament
e de 20
[INFO] [2017-02-02 03:56:47,901] cherrypy.access.97129968: 127.0.0.1 - - [02/Feb
/2017:03:56:47] "GET /static/images/distributed/circle-complete.png HTTP/1.1" 30
4 - "http://127.0.0.1:8008/update/videos/?lang=es" "Mozilla/5.0 (Windows NT 6.3;
 rv:50.0) Gecko/20100101 Firefox/50.0"
[INFO] [2017-02-02 03:56:47,917] cherrypy.access.97129968: 127.0.0.1 - - [02/Feb
/2017:03:56:47] "GET /static/images/distributed/circle-partial.png HTTP/1.1" 304
 - "http://127.0.0.1:8008/update/videos/?lang=es" "Mozilla/5.0 (Windows NT 6.3;
rv:50.0) Gecko/20100101 Firefox/50.0"

[benjaoming]

@radinamatic - I'm not fixing that, because the single-file video queue is essentially broken. This is what learningequality/ka-lite#5094 was for :)

[radinamatic]

@radinamatic great find, I think this is a real issue, the Could not connect to central server message is most likely due to this?

This might be it... Do we have a solution for it? 😛