Trailers / Cinema Mode Issue With Reverse Proxy

[Smoofus 0]

I run MediaBrowser behind an Apache reverse proxy and everything works like a charm with the exception of trailers.  The trailers play fine but I get an "Object reference not set to an instance of an object." message on screen every 20 seconds which is super annoying...  

 

 

I've done my due diligence and have searched the forums and the all mighty Google to no avail so if anyone has any insight/suggestions it would be much appreciated.

 

Server Version: 3.0.5395.0

 

Here is error I see in the server log:

2014-10-18 17:06:50.4851 Debug - HttpServer: HTTP Response 500 to 192.168.1.75. Response time: 0 ms.
	Url: http://mediabrowser.mydomain.com:8096/mediabrowser/Sessions/Playing/Progress
2014-10-18 17:07:00.0791 Debug - App: Disposing stream resources
2014-10-18 17:07:00.0791 Info - App: FFMpeg exited with code 0
2014-10-18 17:07:10.4844 Debug - HttpServer: HTTP POST http://mediabrowser.mydomain.com:8096/mediabrowser/Sessions/Playing/Progress
	Ip: 192.168.5.110:44939. Headers: Host=mediabrowser.mydomain.com:8096,Accept=*/*,X-MediaBrowser-Token=ba4fe3084396424eba124f3c1cffc48e,User-Agent=Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.104 Safari/537.36,Authorization=MediaBrowser Client="Dashboard", Device="Chrome 38.0.2125.104", DeviceId="15427f612f40e30f00a98415193d1240a37f97b5", Version="3.0.5395.0", UserId="04bb66ae437c89046493166ac570d09f",Origin=http://mediabrowser.mydomain.com:8096,Content-Type=application/json,DNT=1,Accept-Encoding=gzip,deflate,Accept-Language=en-US,en;q=0.8,X-Forwarded-For=192.168.1.75,X-Forwarded-Host=mediabrowser.mydomain.com:8096,X-Forwarded-Server=mediabrowser.mydomain.com,Connection=Keep-Alive,Content-Length=556
2014-10-18 17:07:10.4844 Error - DtoUtils: ServiceBase<TRequest>::Service Exception
	Object reference not set to an instance of an object.
	System.NullReferenceException
	   at MediaBrowser.Server.Implementations.Session.SessionManager.UpdateNowPlayingItem(SessionInfo session, PlaybackProgressInfo info, BaseItem libraryItem)
	   at MediaBrowser.Server.Implementations.Session.SessionManager.<OnPlaybackProgress>d__37.MoveNext()
	
2014-10-18 17:07:10.4844 Error - HttpServer: Error processing request for /mediabrowser/Sessions/Playing/Progress
	Object reference not set to an instance of an object.
	ServiceStack.HttpError
	No Stack Trace Available

Full log from a play through of a trailer is attached.

 

Here is the Apache proxy VirtualHost config:

<VirtualHost *:8096>
        ServerName mediabrowser.mydomain.com
        ServerAdmin webmaster@localhost
        DocumentRoot /var/www/mediabrowser

        proxyPreserveHost On
        ProxyRequests Off

        ProxyPass /mediabrowser http://192.168.1.40:8096/mediabrowser
        ProxyPassReverse /mediabrowser http://192.168.1.40:8096/mediabrowser

        RewriteEngine On
        RewriteCond %{REQUEST_URI} ^/$
        RewriteRule (.*) /mediabrowser/ [R=301]

##########################################
#       Mod-Security Rule Bypass         #
##########################################

        <LocationMatch "/mediabrowser">
                <IfModule security2_module>
                        SecRuleRemoveById 981319 #modsecurity_crs_41_sql_injection_attacks.conf
                        SecRuleRemoveById 960032 #modsecurity_crs_30_http_policy.conf
                        SecRuleRemoveById 981143 #modsecurity_crs_43_csrf_protection.conf
                        SecRuleRemoveById 900046 #modsecurity_crs_55_application_defects.conf
                        SecRuleRemoveById 981401 #modsecurity_crs_55_application_defects.conf
                        SecRuleRemoveById 981407 #modsecurity_crs_55_application_defects.conf
                </IfModule>
        </LocationMatch>
</VirtualHost>

Thanks in advance and do not hesitate to let me know if I can provide additional info.

 

server-63549226985.txt

[Luke 37116]

don't know. maybe the request body is being lost. unfortunately without an equivalent test setup we'll have to rely on you to dig a little deeper

[Smoofus 0]

Thanks for the quick response!  I figured it wouldn't be an easy answer so I'll keep digging.  If there is anyone out there with a similar setup, e.g. utilizing an apache reverse proxy, and you are not experiencing this issue would you mind sharing your virtualhost config?  Figure it's worth a shot.

 

Thanks!

[pir8radio 1292]

did anyone ever find an resolution to this?  i have the same issue only with trailers, when i enter a correct username and wrong password on the manual logon page, and in the user account settings when i try to change a users password.   I get "Object reference not set to an instance of an object."    I am using IIS as a reverse proxy.

[robert_foster 0]

I have the same issue, using nginx as a reverse proxy. It crashed my media browser instance and I had to restart the server.

Edited March 1, 2015 by robert_foster