why CC cannot be used if no internet connection - Google Chromecast

Hi Expert,
just wondering why CC is not working if we have no internet connection. for example for last several days I have a problem with my ISP and
we dont have internet connection but our local WIFI is working, and I was noticed when we have no internet CC is not working (I cannot play movie locally through extension or even cast photo using BubbleUPnP).
is it normal like this? I have rooted CC using latest eureka image.
Thanks

When you launch an app on the Chromecast, it has to download the app from the internet before it can run. Once the app has launched you can disconnect from the internet if it is only accessing local content (like Plex).

DJames1 said:
When you launch an app on the Chromecast, it has to download the app from the internet before it can run. Once the app has launched you can disconnect from the internet if it is only accessing local content (like Plex).
Click to expand...
Click to collapse
thanks DJames1 so in other words, if the CC is not connected to internet there is no way we can use it? because I thought we can stream local files using local wifi by utilizing local bandwidth. for example I would like to watch movie and using VideoStream that should be within local connection, because I can see when I have internet I dont see any bandwidth used on my WAN connection, its only using local bandwidth within my network.

DJames is correct. When an App connects to the CCast, the CCast goes on the Net to load up the player app associated with the App your trying to use.
Once that App is loaded however, Internet connection is no longer needed and all of the data is using the local network.
Good to know in cases where the only Net Access is via Mobile Data which on most Carriers is Metered.
The CCast Player Apps themselves are very small since most of the control code is on the launch device. So it won't eat up your Mobile Data while streaming unless your data is also coming over the Internet.

The default player app is always downloaded?
I thought that the problem was that as soon as it started and couldn't get to the Google DNS, it immediately acted as an AP to go to setup mode.
In any case, before a player can be loaded if needed, pretty sure it has to see if Google has whitelisted the app in question.

thanks guys for enlightening me ... is there anyway to make CCast can be working with no internet connection?
regarding white list, I was putting eureka as default white list.

EarlyMon said:
I thought that the problem was that as soon as it started and couldn't get to the Google DNS, it immediately acted as an AP to go to setup mode.
Click to expand...
Click to collapse
Yes, that would be a problem too if you are starting from a power-off state. But even if the Chromecast was already on, it still needs internet access when you start a new app.

EarlyMon said:
The default player app is always downloaded?
I thought that the problem was that as soon as it started and couldn't get to the Google DNS, it immediately acted as an AP to go to setup mode.
In any case, before a player can be loaded if needed, pretty sure it has to see if Google has whitelisted the app in question.
Click to expand...
Click to collapse
You may be right about looking for Google DNS on startup but I'm not sure it goes into setup mode if it fails to find it.
It will go into setup if it can not connect to or find the access point it was last setup to connect to, but if that access point just happens to not have Internet at the time and fails the Google DNS check I do not think the CCast will go into Setup AP mode. Just notifies you on the home screen that it does not have internet access,

EarlyMon said:
I thought that the problem was that as soon as it started and couldn't get to the Google DNS, it immediately acted as an AP to go to setup mode.
In any case, before a player can be loaded if needed, pretty sure it has to see if Google has whitelisted the app in question.
Click to expand...
Click to collapse
If it can't reach Google DNS,
(requested refused/blocked) - it'll complain that it's connected to router but cannot reach Internet
(request timed out) - it'll fall back to DHCP-supplied DNS
It will not drop back to setup AP mode unless the configured router or access point cannot be associated.
You're right that in order for player to be loaded, it has to be on the whitelist.

Related

Any way to make STOCK chromecast work offline?

I'm using my chromecast to watch files stored on the same network. But when I lose connection to to my ISP, chromecast gets stuck trying to talk to the internet and is useless for watching things from Plex. I know Plex still works, because I can watch it on my Ouya.
So, the question is, are there any tricks out there to make a STOCK chromecast think it is able to talk to the internet? Can I run a local server and point chromecast to my local server when it attempts to see if it online?
Nope, It needs internet to load up the receiver apps it uses to play...
Technically you should be able to continue playing locally once that is loaded without Internet access but the device may now sense the loss and unload apps to report the loss of connection.
and you can't spoof the whitelist server because it uses HTTPS and Chromecast only has the certificates for the Google server.
Adding a certificate for your own local server requires root.

Unable to cast netflix

I used to use the netflix on daily basis until about three weeks ago I started to get the following message after a long time displaying the netflix splash screen on my TV: "Humm... It seems we're unable to connect". And then the netflix closes after 10 seconds. Every other chromecast official app works good, but Netflix. I also noted that if I restore the chromecast and launch netflix, everything will work. But if I cast other app, as YouTube for instance, and then return to netflix, I'll get the problem again, requiring another restore.
My chromecast software version is 16664.
Is anyone experiencing the something like that?
Sent from my HTC One_M8 using XDA Free mobile app
luizm.jr said:
I used to use the netflix on daily basis until about three weeks ago I started to get the following message after a long time displaying the netflix splash screen on my TV: "Humm... It seems we're unable to connect". And then the netflix closes after 10 seconds. Every other chromecast official app works good, but Netflix. I also noted that if I restore the chromecast and launch netflix, everything will work. But if I cast other app, as YouTube for instance, and then return to netflix, I'll get the problem again, requiring another restore.
My chromecast software version is 16664.
Is anyone experiencing the something like that?
Click to expand...
Click to collapse
Just to confirm, you're not using any DNS relocation/redirection (Unlocator, Unotelly, etc), right?
I just used Netflix the other day, and I'm still on 16664.
It's weird that everything else works except for Netflix, and also weird that factory reset makes it work. Could be a bug or perhaps something with WiFi connectivity. You don't have a WiFi repeater or multiple APs using the same SSID do you?
bhiga said:
Just to confirm, you're not using any DNS relocation/redirection (Unlocator, Unotelly, etc), right?
I just used Netflix the other day, and I'm still on 16664.
It's weird that everything else works except for Netflix, and also weird that factory reset makes it work. Could be a bug or perhaps something with WiFi connectivity. You don't have a WiFi repeater or multiple APs using the same SSID do you?
Click to expand...
Click to collapse
I use regular DNS. I also tried different WiFi routers and I always got this issue. Rarely Netflix works without need factory reset.
I was wondering if it could be a problem with the chromecast cache. Do you know a way to clear the cache without factory reseting?
luizm.jr said:
I use regular DNS. I also tried different WiFi routers and I always got this issue. Rarely Netflix works without need factory reset.
I was wondering if it could be a problem with the chromecast cache. Do you know a way to clear the cache without factory reseting?
Click to expand...
Click to collapse
Not that I know of... however, since the Netflix app is stored on Chromecast, there's a small possibility that it's a RAM or NAND issue on your Chromecast itself. If it's not rooted or special in any way, you might want to consider getting it replaced.
Or see if you can borrow another Chromecast to see if the problem is localized to your specific device.
bhiga said:
Not that I know of... however, since the Netflix app is stored on Chromecast, there's a small possibility that it's a RAM or NAND issue on your Chromecast itself. If it's not rooted or special in any way, you might want to consider getting it replaced.
Or see if you can borrow another Chromecast to see if the problem is localized to your specific device.
Click to expand...
Click to collapse
This is new for me. I thought Netflix was loaded online. I'll ask a friend that has chromecast to test mine in his home and and borrow his chromecast.
I'll let you know the results tomorrow.
Thanks
I borrowed a chromecast and first time it worked. After casting YouTube videos and then return to netflix, same thing happened. My friend got everything working great using my chromecast.
The only thing that never changed is my cable modem, but I never change anything on it. Moreover, why this is happening only with netflix and why it works if I factory reset are still a mystery.
Sent from my HTC One_M8 using XDA Free mobile app
luizm.jr said:
I borrowed a chromecast and first time it worked. After casting YouTube videos and then return to netflix, same thing happened. My friend got everything working great using my chromecast.
The only thing that never changed is my cable modem, but I never change anything on it. Moreover, why this is happening only with netflix and why it works if I factory reset are still a mystery.
Sent from my HTC One_M8 using XDA Free mobile app
Click to expand...
Click to collapse
Perhaps you are seeing the first case of Net Neutrality biting you in the ISP?
See if you can reach Netflix via the browser...
I don't think so. I can access netflix anywhere else: tablet, phone, ps3 and computer. Besides, my friend use the same isp.
The only other place I having trouble in access netflix is my old Asus cube that I had retired since I got the chromecast last year.
Sent from my HTC One_M8 using XDA Free mobile app
luizm.jr said:
I don't think so. I can access netflix anywhere else: tablet, phone, ps3 and computer. Besides, my friend use the same isp.
The only other place I having trouble in access netflix is my old Asus cube that I had retired since I got the chromecast last year.
Click to expand...
Click to collapse
Quite the puzzle...
Since your Chromecast works on your friend's network, and your friend's Chromecast shows the same behavior as yours on your network, the breakage factor definitely seems to be something about your network.
I really can't think of your cable modem being an issue unless isn't going bad (if it has an interface, look for excessive errors and/or poor signal quality - for example, Motorola SurfBoards usually have an interface at http://192.168.100.1/).
As your friend is using the same ISP, I would compare your router settings with his - ISP login type, routing and DNS in particular.
Of course if you have different routers then the router itself is still a variable.
I'll try to share my mobile Internet connection as soon I get back home to see if it will do the same.
Also I'll try to look the router log to see something.
Sent from my HTC One_M8 using XDA Free mobile app
I tested chromecast connecting to my phone in tethering mode. Netflix worked everytime. But when I got back to my regular connection, the problem appeared again.
So the problem seems to be located in my cable modem that also is a router.
Sent from my HTC One_M8 using XDA Free mobile app
Ok first question...do you have another router connected to the Modem Router? Are you using the Modem's built in WiFi or this other router's?
If you have another router then chances are likely you have a double NAT situation which is messing you up.
Check your other router and see what IP address is has listed under Internet connection...If it is a 192.168.xxx.xxx then it's a double Nat and you need to call your Cable company and have them put the Modem into Bridge mode.
If you do not have another router and use only the Modem router then you need to call the cable company and have them change the settings on the router to allow multicast and UPnP...Maybe a few other settings as well. Tell them what you are trying to do they have probably gotten lots of calls from others with the same issue.
Me personally I prefer to use my own router and have them put the Modem into Bridge mode so I have full control over the network and don't need to call them whenever I have a problem or want to change settings.
Asphyx said:
Ok first question...do you have another router connected to the Modem Router? Are you using the Modem's built in WiFi or this other router's?
If you have another router then chances are likely you have a double NAT situation which is messing you up.
Check your other router and see what IP address is has listed under Internet connection...If it is a 192.168.xxx.xxx then it's a double Nat and you need to call your Cable company and have them put the Modem into Bridge mode.
If you do not have another router and use only the Modem router then you need to call the cable company and have them change the settings on the router to allow multicast and UPnP...Maybe a few other settings as well. Tell them what you are trying to do they have probably gotten lots of calls from others with the same issue.
Me personally I prefer to use my own router and have them put the Modem into Bridge mode so I have full control over the network and don't need to call them whenever I have a problem or want to change settings.
Click to expand...
Click to collapse
My cable modem a public IP provided by my ISP, and a private IP that is 192.168.0.1. My router has a WAN IP provided by my cable modem (192.168.0.xxx) and a LAN IP 192.168.1.1. My chromecast used to be connected in my router LAN, but I changed it to connect directly to the cable modem router. I'll try to put the cable modem in bridge mode to see what happens as I have full access to its configuration.
Thanks again
luizm.jr said:
My cable modem a public IP provided by my ISP, and a private IP that is 192.168.0.1. My router has a WAN IP provided by my cable modem (192.168.0.xxx) and a LAN IP 192.168.1.1. My chromecast used to be connected in my router LAN, but I changed it to connect directly to the cable modem router. I'll try to put the cable modem in bridge mode to see what happens as I have full access to its configuration.
Thanks again
Click to expand...
Click to collapse
Yep that setup causes a double Nat situation Which doesn't work well for most networking applications....
Especially since you are also dealing with Two different Wireless networks.
Best setup is to have the modem just be a modem and send public IPs to whatever connects to it.
Then you won't have any Nat translation issues PLUS you get the ability (if your Modem has multiple ports like most Modem/Router Hybrids do, You can get a public IP for any device directly connected to the Modem which is good for running servers and for testing router issues.
Problem solved!
I turned off the wifi on the cable modem and put it on bridge mode, letting my router deal with my network. Netflix is now working good on both chromecast and Google tv.
However I believe the problem was related to a still unknown setting in the cable modem as I left it operating alone and netflix was still not able to load.
Thank you very much for the help. I really appreciate it.
Sent from my HTC One_M8 using XDA Free mobile app
luizm.jr said:
Problem solved!
I turned off the wifi on the cable modem and put it on bridge mode, letting my router deal with my network. Netflix is now working good on both chromecast and Google tv.
However I believe the problem was related to a still unknown setting in the cable modem as I left it operating alone and netflix was still not able to load.
Thank you very much for the help. I really appreciate it.
Sent from my HTC One_M8 using XDA Free mobile app
Click to expand...
Click to collapse
it may very well have been a Router issue with the Modem...But now that it is only a Bridge the other router's settings will handle all the communication needed for the CCast and it should work...
As long as the settings on the second router were not the issue in the first place.

[Q] Using Chromecast to circumvent Internet permission in an app

Forgive me if I'm covering well-worn territory, I didn't see it posted, but I've also got a wicked head cold and my Google-fu is weak today.
The question I have is is it possible without the Full Internet permission to pass data to the internet via any Chromecast in WiFi range, or is full internet required just to connect to the Chromecast?
IE can an app with no internet access or restricted accesses using the Chromecast APIs/Google Play Services still connect to the first Chromecast it sees and then attempt to start streaming from http://hackyou.com&mediaid=myphonenumber&myemailaddress&whateverelseitstole
Leaving whoever runs that site with a log entry of your purloined info?

Chromecast on a network that requires login

Hello World,*
I use my Chromecast mostly for presentatins from my flounder (nexus 9) at school. But due to my schools new (even crappier) internet infrastructure, we now have to log in to their network every morning.. So the internet is open without any password, but we'll need to sign in *with our logins. It doesn't seem like Chromecast supports that though... is there any way I can still cast my screen without making a hotspot on my phone?
I use MAC spoofer app from the play store. Google using Chromecast in a hotel (same concept) and its easier than u think

Solution for ChromeCast without internet connection

Hello,
I want to show a dashboard on the tv in my company. The app is ready and it works fine ( checked it at home) but through the network policies in the company it is not possible to give the chromecast internet access. Is there a work around for the App id check ? The webserver is installed locally . The Cast should only show a website form the server.
Maybe it would be great if there is a solution without rooting it, but with a good guide it would also be possible.
Is there a way to manipulate the Google DNS ?
Greets,
Sissie
I have not seen a work around. I have seen this same question posted several times. I travel alot for work and when I'm in the hotels, I use my phone as a Hotspot to get my Chromecast to work. That is an option.
Note 4 using Taptalk
Thats one point but is their a way to switch the call of the chromecast to his "start"screen in the router to a local "manipulated" website ?
sissiekron said:
Hello,
I want to show a dashboard on the tv in my company. The app is ready and it works fine ( checked it at home) but through the network policies in the company it is not possible to give the chromecast internet access. Is there a work around for the App id check ? The webserver is installed locally . The Cast should only show a website form the server.
Maybe it would be great if there is a solution without rooting it, but with a good guide it would also be possible.
Is there a way to manipulate the Google DNS ?
Greets,
Sissie
Click to expand...
Click to collapse
If you have a phone with hotspot you could turn it on, connect the Chromecast to it, start up a cast and right after that, turn off your data so it doesn't eat up your data plan and you're all set. Hope this helps!
joeyakaspce1130 said:
If you have a phone with hotspot you could turn it on, connect the Chromecast to it, start up a cast and right after that, turn off your data so it doesn't eat up your data plan and you're all set. Hope this helps!
Click to expand...
Click to collapse
Do we need to follow the above steps every time we want to connect cromecast as offline user ?
Sent from my SM-T231 using Tapatalk
joeyakaspce1130 said:
If you have a phone with hotspot you could turn it on, connect the Chromecast to it, start up a cast and right after that, turn off your data so it doesn't eat up your data plan and you're all set. Hope this helps!
Click to expand...
Click to collapse
This needs Internet anyway, even if for a short time
I wonder if this can instead be done this way, with a rooted phone acting as tethered wifi hotspot:
- set CC to connect to the tethered wifi network on the rooted Phone (explained elsewhere)
- set the rooted phone to manipulate iptables (but how'? block? redirect to what?) DNS request to 8.8.8.8 and 8.8.4.4 coming from the CC
This shouldn't need internet at all.
cleansafi said:
Do we need to follow the above steps every time we want to connect cromecast as offline user ?
Sent from my SM-T231 using Tapatalk
Click to expand...
Click to collapse
Yes, unfortunately
---------- Post added at 06:44 AM ---------- Previous post was at 06:42 AM ----------
giancapino said:
This needs Internet anyway, even if for a short time
I wonder if this can instead be done this way, with a rooted phone acting as tethered wifi hotspot:
- set CC to connect to the tethered wifi network on the rooted Phone (explained elsewhere)
- set the rooted phone to manipulate iptables (but how'? block? redirect to what?) DNS request to 8.8.8.8 and 8.8.4.4 coming from the CC
This shouldn't need internet at all.
Click to expand...
Click to collapse
Yea, it does... Not sure how changing the DNS server would help?

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