Content Server on Arch Linux

ginsa · 09-29-2018, 06:47 PM

I have several computers, most of them with Linux. I use Calibre mainly on Arch. The current version is 3.32.0-1.
Recently I tried to start the Content Server. On the same machine with Firefox I can access the library of Calibre with http://127.0.0.1:8080 or by entering the IP address of the computer itself.
However, from another computer or ebook reader I can't.
The browser says it is connecting, but after a while it runs out of connection time.
If instead I start the server on another computer with Linux Fedora (and with another copy of the Calibre library) everything works fine and I access from computers, tablets, readers, shavers

... etc. The Fedora version is 3.29.0.
The two systems are on the same network of course.
Where can I start investigating why the web server running on Arch is not accessible?

Thank you.

theducks · 09-29-2018, 07:32 PM

127.0.0.1 addresses are only accessible on a single machine,thus the name Localhost

You need to use the assigned (public) IP for the host machine, from anyplace else on the LAN

If you single click the Sharing over the net icon, you will see the public IP (and port), next to STOP the server.

ilovejedd · 09-29-2018, 07:47 PM

Quote:

Originally Posted by theducks

127.0.0.1 addresses are only accessible on a single machine,thus the name Localhost

You need to use the assigned (public) IP for the host machine, from anyplace else on the LAN

If you single click the Sharing over the net icon, you will see the public IP (and port), next to STOP the server.

OP did mention this:

Quote:

Originally Posted by ginsa

or by entering the IP address of the computer itself.

Somehow, I don't think the OP would be running Arch without knowing at the very least that 127.0.0.1 refers to localhost.

@OP
I'm not familiar with Arch but have you checked if it has firewall rules blocking the server? Even on Windows, the firewall default for running servers is blocked unless explicitly allowed.

theducks · 09-29-2018, 08:58 PM

Quote:

Originally Posted by ilovejedd

OP did mention this:

Somehow, I don't think the OP would be running Arch without knowing at the very least that 127.0.0.1 refers to localhost.

I think you are correct about Arch (I hear it is not as Windows user friendly, as, say Ubuntu ).

ilovejedd · 09-29-2018, 11:39 PM

https://img.devrant.com/devrant/rant/r_368995_joSyh.jpg

https://img.devrant.com/devrant/rant/r_738137_7RHyU.jpg

Spoiler:

ginsa · 09-30-2018, 04:01 AM

Quote:

Originally Posted by theducks

127.0.0.1 addresses are only accessible on a single machine,thus the name Localhost

You need to use the assigned (public) IP for the host machine, from anyplace else on the LAN

If you single click the Sharing over the net icon, you will see the public IP (and port), next to STOP the server.

It is what I did....

ginsa · 09-30-2018, 05:56 AM

Quote:

Originally Posted by ilovejedd

OP did mention this:

@OP
I'm not familiar with Arch but have you checked if it has firewall rules blocking the server? Even on Windows, the firewall default for running servers is blocked unless explicitly allowed.

That is what I'm able not do...

ilovejedd · 09-30-2018, 10:55 AM

Quote:

Originally Posted by ginsa

That is what I'm able not do...

Alas, I expect you're gonna need to research how to do this on your own. I doubt many (if any) here use Arch.

I use Mint because I wanted a distro that's user-friendly with a community that doesn't just tell you to RTFM when you ask a question.

ginsa · 09-30-2018, 12:53 PM

Quote:

Originally Posted by ilovejedd

Alas, I expect you're gonna need to research how to do this on your own. I doubt many (if any) here use Arch.

Perhaps, ... unfortunately.

Although my system has neither active firewalls nor TCP / IP access rules !!
But Calibre on Arch is also recommended by Kovid Goyal

theducks · 09-30-2018, 02:34 PM

Quote:

Originally Posted by ginsa

Perhaps, ... unfortunately.

Although my system has neither active firewalls nor TCP / IP access rules !!
But Calibre on Arch is also recommended by Kovid Goyal

Kovid is a GURU.
Everything is easy for him

BetterRed · 09-30-2018, 05:43 PM

@ginsa - member eschwartz is an Arch specialist, he only drops by occasionally but I'm sure he'll be happy to advise - send him a PM.

BR

ginsa · 09-30-2018, 05:53 PM

Quote:

Originally Posted by BetterRed

@ginsa - member eschwartz is an Arch specialist, he only drops by occasionally but I'm sure he'll be happy to advise - send him a PM.

BR

That is a good advice. Thank you very much.

kovidgoyal · 10-01-2018, 12:13 AM

Is your arch computer publicly routable? is it behind a router? if so have you forwarded the port to it? What IP address are yo uusing to try to access your computer? From which network. Arch by default has no firewall, so unless you have set one up yourself, it wont be a firewall issue.

ginsa · 10-01-2018, 03:25 AM

Quote:

Originally Posted by kovidgoyal

Is your arch computer publicly routable? is it behind a router? if so have you forwarded the port to it? What IP address are yo uusing to try to access your computer? From which network. Arch by default has no firewall, so unless you have set one up yourself, it wont be a firewall issue.

The problem is inside the home LAN. That is the strange thing.... The client browser and the content server have both address 192.168.1.X and 192.168.1.Y.
On Arch server there are no firewall or iptables rules.
On the same machine where is Arch system there is an Ubuntu system in multiboot... and a copy of the content server on Ubuntu works as it should. Incredible !!

kovidgoyal · 10-01-2018, 06:27 AM

can you ping your arch machine from the browser machine?

09-29-2018, 06:47 PM	#1
ginsa Member Posts: 11 Karma: 10 Join Date: Aug 2018 Device: Sony PRS-T1, Kobo Aura	Content Server on Arch Linux I have several computers, most of them with Linux. I use Calibre mainly on Arch. The current version is 3.32.0-1. Recently I tried to start the Content Server. On the same machine with Firefox I can access the library of Calibre with http://127.0.0.1:8080 or by entering the IP address of the computer itself. However, from another computer or ebook reader I can't. The browser says it is connecting, but after a while it runs out of connection time. If instead I start the server on another computer with Linux Fedora (and with another copy of the Calibre library) everything works fine and I access from computers, tablets, readers, shavers ... etc. The Fedora version is 3.29.0. The two systems are on the same network of course. Where can I start investigating why the web server running on Arch is not accessible? Thank you. Last edited by ginsa; 09-29-2018 at 07:06 PM.

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09-29-2018, 07:32 PM	#2
theducks Well trained by Cats Posts: 29,884 Karma: 55267620 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	127.0.0.1 addresses are only accessible on a single machine,thus the name Localhost You need to use the assigned (public) IP for the host machine, from anyplace else on the LAN If you single click the Sharing over the net icon, you will see the public IP (and port), next to STOP the server.

09-29-2018, 11:39 PM	#5
ilovejedd hopeless n00b Posts: 5,111 Karma: 19597086 Join Date: Jan 2009 Location: in the middle of nowhere Device: PW4, PW3, Libra H2O, iPad 10.5, iPad 11, iPad 12.9	https://img.devrant.com/devrant/rant/r_368995_joSyh.jpg https://img.devrant.com/devrant/rant/r_738137_7RHyU.jpg Spoiler:

09-30-2018, 05:43 PM	#11
BetterRed null operator (he/him) Posts: 20,625 Karma: 26960534 Join Date: Mar 2012 Location: Sydney Australia Device: none	@ginsa - member eschwartz is an Arch specialist, he only drops by occasionally but I'm sure he'll be happy to advise - send him a PM. BR

10-01-2018, 12:13 AM	#13
kovidgoyal creator of calibre Posts: 43,930 Karma: 22669822 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Is your arch computer publicly routable? is it behind a router? if so have you forwarded the port to it? What IP address are yo uusing to try to access your computer? From which network. Arch by default has no firewall, so unless you have set one up yourself, it wont be a firewall issue.

10-01-2018, 06:27 AM	#15
kovidgoyal creator of calibre Posts: 43,930 Karma: 22669822 Join Date: Oct 2006 Location: Mumbai, India Device: Various	can you ping your arch machine from the browser machine?

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