OpenEuphoria

1. Connection between PCs on the Internet

• Posted by sergelli Feb 08, 2015
• 1857 views

Hello friends.
Using only Euphoria, you can build a program that exchange files between PCs connected to the Internet?
What functions, commands and libraries should I use? Thanks in advance

3. Re: Connection between PCs on the Internet

• Posted by sergelli Feb 08, 2015
• 1797 views

hello Kat. Thanks for the reply

I think not explained myself well

I wish to make a program in Euphoria that make the exchange of files between two PCs using an internet connection

Please can you help, informing what resources should I use?

5. Re: Connection between PCs on the Internet

• Posted by ChrisB (moderator) Feb 09, 2015
• 1726 views

Hi

There are many ways of exchanging files over the internet. It will require a little research on your part, but your best bet would be to use existing programs, and use eu as a front end.

wget and ftp are probably your best bet.

Using ftp set up and ftp server at both of the computers, then use a ftp or wget to get and put files to each of the servers as required. There is a ton of existing documentation out there. Happy reading.

I use ftp to transfer files from within eu, I jut use it to call the external ftp programs. But I have an easy life, I use Linux to do this, and the command line ftp is already present. I use vsftpd as the server.

There are http solutions too - HTTP GET and POST are a couple of methods, but I'm not knowledgeable enough in this area to make any kind of recommendation.

Hope this helps.

Chris

7. Re: Connection between PCs on the Internet

• Posted by sergelli Feb 09, 2015
• 1720 views

This method requires you to know:

1. The router IP in the Internet network
2. The machine's IP on the internal network that router

How do you find these numbers?

9. Re: Connection between PCs on the Internet

• Posted by ChrisB (moderator) Feb 09, 2015
• 1739 views

Hi

I wrote a little programlet to find these out. Its on a linux system, but should be adaptable to a windows system

--separate standalone 
--in /ipdetect/ipdetect.eui 
 
include std/io.e 
include std/filesys.e 
include std/regex.e as re 
 
sequence ifile, thiscomp = {} 
object extaddr = {} 
sequence re_quad 
object quad_matches 
 
system("/sbin/ifconfig > if.txt", 0) 
 
ifile = read_lines("if.txt") 
for i = 1 to length(ifile) do 
        if match("inet addr:", ifile[i]) > 0 then 
                thiscomp = "This computer " & ifile[i][match("inet addr:", ifile[i])..$] 
                exit 
        end if 
end for 
 
--this does not seem to work any more 
--system("wget -q http://automation.whatismyip.com/n09230945.asp", 0) 
 
--try these 
 
-- checkip.dyndns.org/ 
-- checkip.dyndns.org:8245/ 
-- dynamic.zoneedit.com/checkip.html 
-- dynupdate.no-ip.com/ip.php 
 
--http://box.houkouonchi.jp/ip.php 
 
 
--system("wget -q http://box.houkouonchi.jp/ip.php -O ip_addr.txt", 0) 
--system("wget -q http://dynamic.zoneedit.com/checkip.html -O ip_addr.txt", 0) 
system("wget -q http://checkip.dyndns.org -O ip_addr.txt", 0) 
 
extaddr = read_lines("ip_addr.txt") 
 
--find quad within that line 
--sometimes the line is HTTP formatted. 
--sometimes there is more than one line 
 
re_quad = re:new("[0-9]+.[0-9]+.[0-9]+.[0-9]+") 
for i = 1 to length(extaddr) do 
        quad_matches = re:matches(re_quad, extaddr[i]) 
        if sequence(quad_matches) then 
                extaddr[1] = quad_matches[1] 
                exit 
        end if 
end for 
 
if sequence(extaddr) then 
        extaddr = "External ip = " & extaddr[1] 
else 
        extaddr = "Can't reach ip identifier site" 
end if 
 
puts(1, thiscomp & "\n") 
puts(1, extaddr & "\n") 
delete_file("wget.log") 
delete_file("if.txt") 
--delete_file("ip_addr.txt") 

Another option would be to use dropbox, create shared folders on all the target machines, and just copy the file to the local machine folder, it will appear in the other local machines folder as well.

Just a thought, which has just occurred to me would be useful for a project I'm thinking about now. Thanks sergelli!

Chris

11. Re: Connection between PCs on the Internet

• Posted by ChrisB (moderator) Feb 09, 2015
• 1695 views

Hi

Well of course, that's your choice, but I was not aware of any security issue that arose when you just queried the server for the address that was querying it. Of course one could become so utterly paranoid that your computer was going to be hacked, that you would never venture onto the internet at all, pull up all the drawbridges, and pull all the network plugs. This is just one of the many reasons I like Linux of course.

There area ton of other options to pursue (this was just a quick and dirty hack), you just have to pick one that's right for you.

Cheers

Chris

13. Re: Connection between PCs on the Internet

• Posted by sergelli Feb 09, 2015
• 1668 views

Yes. We need takes hard work to have a safe access on the internet. My Nephew undergoes more than 100 intrusion attempts every day. He uses Telnet in Linux and uses only the firewall to protect.

Please could you tell me what information you get from dyndns.org?

15. Re: Connection between PCs on the Internet

• Posted by Ekhnat0n Feb 11, 2015
• 1576 views

hey scooby,

how's life nowadays in canada as an indian warrior and minion?
remember ekhnaton from IRC-chat Euphoria?

wkr

antoine

17. Re: Connection between PCs on the Internet

• Posted by ChrisB (moderator) Mar 16, 2015
• 1511 views

Hi

Thats another option of course, but just to make it clear, thats not an internal program, that still uses an external web address to return your ip address that shows to the internet - very much like getting the info back from dyndns. I'm sure thare are other reponders out there too.

In fact, if you have a known Linux box you can ssh into, you can do

tty

will give you the terminal id you are logged into (call that <tty> ), then

who | grep <tty>

will give you the ip address you are logged in from. In some cases it may give you a resolved name, in whach case, feed that into dig

eg

dig www.google.com

As I said, loads of options

Chris