[compat] Unable to cast from fx_cast (any website; on Ubuntu) to LG webOS TV

[vitorpy]

I can't get fx_cast to locate my TV. It does however works under Chrome on MacOS.

fx_cast seems to be configured correctly. However, I cannot see my LG as a device to cast to. I believe the problem is related to avahi.

avahi-browse does not locate the TV.

Running avahi-bowse -ta:

vitor@vitor-Inspiron-5379:~$ avahi-browse -ta
+ wlp1s0 IPv6 WIFE_NAME _companion-link._tcp local
+ wlp1s0 IPv6 iPad _companion-link._tcp local
+ wlp1s0 IPv4 WIFE_NAME _companion-link._tcp local
+ wlp1s0 IPv4 iPad _companion-link._tcp local
+ wlp1s0 IPv4 googlerpc _googlerpc._tcp local
+ wlp1s0 IPv4 Google-Nest-Mini-72425af30279be458f4bafe93af399fb _googlecast._tcp local
+ wlp1s0 IPv4 72425af3-0279-be45-8f4b-afe93af399fb _googlezone._tcp local
+ wlp1s0 IPv6 HP DeskJet 2600 series [2C33E6] PDL Printer local
+ wlp1s0 IPv4 HP DeskJet 2600 series [2C33E6] PDL Printer local
+ wlp1s0 IPv6 HP DeskJet 2600 series [2C33E6] Internet Printer local
+ wlp1s0 IPv4 HP DeskJet 2600 series [2C33E6] Internet Printer local
+ wlp1s0 IPv6 HP DeskJet 2600 series [2C33E6] _scanner._tcp local
+ wlp1s0 IPv4 HP DeskJet 2600 series [2C33E6] _scanner._tcp local
+ wlp1s0 IPv6 HP DeskJet 2600 series [2C33E6] _uscan._tcp local
+ wlp1s0 IPv4 HP DeskJet 2600 series [2C33E6] _uscan._tcp local
+ wlp1s0 IPv6 HP DeskJet 2600 series [2C33E6] Secure Internet Printer local
+ wlp1s0 IPv4 HP DeskJet 2600 series [2C33E6] Secure Internet Printer local
+ wlp1s0 IPv6 HP DeskJet 2600 series [2C33E6] _uscans._tcp local
+ wlp1s0 IPv4 HP DeskJet 2600 series [2C33E6] _uscans._tcp local
+ wlp1s0 IPv4 HP DeskJet 2600 series [2C33E6] Web Site local
+ wlp1s0 IPv4 HP DeskJet 2600 series [2C33E6] _http-alt._tcp local
+ wlp1s0 IPv4 HP DeskJet 2600 series [2C33E6] _privet._tcp local
+ wlp1s0 IPv6 HP DeskJet 2600 series [2C33E6] Web Site local
+ wlp1s0 IPv6 HP DeskJet 2600 series [2C33E6] _http-alt._tcp local
+ wlp1s0 IPv6 HP DeskJet 2600 series [2C33E6] _privet._tcp local

The devices shown are my wife's iPad, a Google Nest Mini and my HP wifi printer. The TV is nowhere to be shown.

Running nmap -sV -p 1-65535 TV_IP:

vitor@vitor-Inspiron-5379:~/tmp/miraclecast/res$ sudo nmap -sV -p 1-65535 192.168.1.25
Starting Nmap 7.80 ( https://nmap.org ) at 2021-03-10 22:47 GMT
Nmap scan report for 192.168.1.25
Host is up (0.062s latency).
Not shown: 65524 closed ports
PORT STATE SERVICE VERSION
1291/tcp open upnp LG WebOS TV upnpd (model: UJ634V; WebOS 0.9; UPnP 1.0; DLNADOC 1.50)
1529/tcp open upnp LG WebOS upnpd (WebOS 1.5; UPnP 1.0)
1535/tcp open upnp LG WebOS upnpd (WebOS 4.1.0; UPnP 1.0)
1848/tcp open upnp Platinum unpnd 1.0.4.9 (arch: i686; UPnP 1.0; DLNADOC 1.50)
1918/tcp open upnp Platinum unpnd 1.0.4.9 (arch: i686; UPnP 1.0; DLNADOC 1.50)
3000/tcp open http LG smart TV http service
3001/tcp open ssl/http LG smart TV http service
9080/tcp open http Mongoose httpd
9998/tcp open http Google Chromecast httpd
18181/tcp open opsec-cvp?
36866/tcp open unknown
1 service unrecognized despite returning data. If you know the service/version, please submit the following fingerprint at https://nmap.org/cgi-bin/submit.cgi?new-service :
SF-Port36866-TCP:V=7.80%I=7%D=3/10%Time=60494C8E%P=x86_64-pc-linux-gnu%r(G
SF:etRequest,52,"HTTP/1\.1\x20404\x20Not\x20Found\r\nDate:\x20Wed,\x2010\x
SF:20Mar\x202021\x2022:47:42\x20GMT\r\nConnection:\x20close\r\n\r\n")%r(Fo
SF:urOhFourRequest,52,"HTTP/1\.1\x20404\x20Not\x20Found\r\nDate:\x20Wed,\x
SF:2010\x20Mar\x202021\x2022:47:47\x20GMT\r\nConnection:\x20close\r\n\r\n"
SF:);
MAC Address: 04:4E:AF:66:85:7E (LG Innotek)
Service Info: OS: Linux; Device: media device; CPE: cpe:/h:lg:uj634v, cpe:/o:linux:linux_kernel

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 115.13 seconds

I'm not sure on how to debug from here. Any guidance on how to proceed would be appreciated.

Cross posted to launchpad.

[hensm]

Are you sure your TV supports Chromecast? I wasn't aware LG made TVs with built-in Chromecast support, and there doesn't appear to be a Chromecast service running. The "Google Chromecast httpd" entry is a little weird, though.

This is the output from one of my Chromecast devices:

> nmap -sV -p 1-65535 192.168.1.227
Starting Nmap 7.91 ( https://nmap.org ) at 2021-03-11 00:38 GMT Standard Time
Nmap scan report for Chromecast.router.local (192.168.1.227)
Host is up (0.011s latency).
Not shown: 65528 closed ports
PORT      STATE SERVICE          VERSION
8008/tcp  open  http?
8009/tcp  open  ssl/ajp13?
8012/tcp  open  unknown
8443/tcp  open  ssl/https-alt?
9000/tcp  open  ssl/cslistener?
10001/tcp open  ssl/scp-config?
10101/tcp open  ssl/ezmeeting-2?
MAC Address: 14:C1:4E:5C:DB:73 (Google)

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 156.52 seconds

You could try testing service discovery from macOS to compare:

> dns-sd -B _googlecast._tcp
Browsing for _googlecast._tcp
Timestamp     A/R Flags if Domain                    Service Type              Instance Name
 0:42:10.287  Add     2 10 local.                    _googlecast._tcp.         Chromecast-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

[vitorpy]

Am I sure? No. I assumed it did because I can stream to it from the YouTube app:

Or from Chrome on MacOS.

Maybe it's just DLNA and Chrome/YouTube can cast do a DLNA device as well? I'll check the MacOS output in the morning.

[vitorpy]

By the way, it also works from Chrome on the same machine (w/ Ubuntu):

I'll dig a bit and see if the device is only discoverable through UPnP. If it is, I'll see if I can try to extend your code to look for UPnP devices as well.

[hensm]

Oh yeah, that's a DIAL app. Chrome/YouTube supports that, but I haven't really looked at implementing it yet.