OpenEuphoria

2. Re: how to communicate with a server?

• Posted by mattlewis (admin) Oct 15, 2010
• 1883 views

I would recommend sticking with 3.1.1 over 3.0.

As for networking, I would recommend eunet. I believe that this library was the basis for the networking in 4.0.

Matt

4. Re: how to communicate with a server?

• Posted by ChrisB (moderator) Oct 15, 2010
• 1752 views

Hi

EuWinGui won't work with 4. I have emailed Andrea Cini a awhile ago, and while he is interested in porting it, I don't think its a very high priority for him at the moment.

Chris

6. Re: how to communicate with a server?

• Posted by irv Oct 15, 2010
• 1727 views

http://rapideuphoria.com/cgi-bin/asearch.exu?dos=on&win=on&lnx=on&gen=on&keywords=socket

Several examples & packages there. I need to update my programs there to use Eu4.0.

8. Re: how to communicate with a server?

• Posted by euphoric (admin) Oct 15, 2010
• 1695 views

It can't be all that difficult to convert. Win32Lib was a breeze and probably has more lines of code. Come on!

10. Re: how to communicate with a server?

• Posted by Bayes63 Oct 15, 2010
• 1731 views

Thanks for the feedback guys. I've just been looking at the readme in Eunet.

quote:

"Socket programming can be either client/server or peer-to-peer. In client/server, one copy of the program listens for incoming connections, while all other copies create those connections. In peer-to-peer, all copies are both listening and connecting."

I'm totally clueless. What I want to do isn't as simple as remotely downloading a web page, is it? otherwise I could just use wget. Don't I need to use some of these functions?

HTTP routines are...

eunet_get_http_use_cookie

eunet_get_recvheader

eunet_get_sendheader

eunet_get_url

eunet_parse_recvheader

eunet_set_sendheader

eunet_set_sendheader_default

eunet_set_sendheader_useragent_msie

eunet_urlencode

DNS routines are...

eunet_dnsquery

eunet_getaddrinfo

eunet_getmxrr

eunet_getnsrr

Initialization routines are...

eunet_accept

eunet_bind

eunet_connect

eunet_get_socket_options

eunet_listen

eunet_new_socket

eunet_set_socket_options

Communication routines are...

eunet_poll

eunet_recv

eunet_recvfrom

eunet_send

eunet_sendto

Cleanup routines are...

eunet_close_socket

eunet_shutdown_socket

But I don't know which ones and in what order. The examples which come with the library aren't helping much.

12. Re: how to communicate with a server?

• Posted by irv Oct 15, 2010
• 1718 views

Since you said a cgi program, I'm guessing you're going to be running a web server - such as apache.

If so, look at socks which is a very simple program with enough socket stuff to do the job. about 250 lines, so it's easy to follow.

OTOH, perhaps you want to use RPC (remote procedure calls). Dave Cuny has a package: RDC which USED to work fine, but for some reason, does not now work on my Linux computer - perhaps some addition security measures are preventing it from working. All calls to accept fail.

14. Re: how to communicate with a server?

• Posted by irv Oct 15, 2010
• 1716 views

include std/net/http.e -- Eu4.0 
enum HEADER, BODY 
object data 
data = get_url("http://foo.com/cgi/somecgi","userid=joe&password=guessme") 
puts(1,data[HEADER]) 
-- do something with data[BODY], like parse out the info you need... 

Now, if you're accessing a web page (yours or someone else's) with a browser to enter the numbers & press the button, you are going to get the results back as a web page in the browser - which Euphoria won't see.

So probably you'll want to determine from looking at the first web page source what the names of the fields are, and use those in your get_url() request instead of entering them on the original web page. Confused?

Here's a simple web form: http://isthe.com/cgi-bin/cgi-example.cgi Look at it first with a browser, then view the source. You'll see the names of the form fields, like <input type="text" name="yourname" value="Your name here" /> Use those field names to send data directly from your Euphoria program.

if you request that page using the above short program with the line:

data = get_url("http://isthe.com/cgi-bin/cgi-example.cgi","yourname=FooBaz&color=blue") 

The returned web page will have html using those values:

Your name is:  
<b>FooBaz</b> 
<p /> 
The keywords are:  
<em></em> 
<p /> 
Your favorite color is:  
<tt>blue</tt> 

Obviously, you'll have to parse out the parts you need to use.

If you're writing the cgi yourself, it's much easier - you don't need to return a web page full of html at all, just send plain text back.

16. Re: how to communicate with a server?

• Posted by irv Oct 15, 2010
• 1675 views

eui socks isthe.com /cgi-bin/cgi-example.cgi?yourname=Irv&color=red 

If you get the sockets demo previously mentioned, it has the ability to do the same, and it runs in 3.11 Use a command line similar to the one shown above, or use the routines in it as you need. Just cut out the - - MAIN - - part and use the rest as an include, calling Get("hostname","filename")

However - you may have to change some code to make it work on Windows - I don't have access to a Windows machine, and you probably have to call a different dll to get the functions to work. Looks like the equivalent Windows calls can be found here: TCP Socket Library

18. Re: how to communicate with a server?

• Posted by Bayes63 Oct 16, 2010
• 1580 views

Thanks irv for the suggestions. As I've already written the gui (which is fairly complex) and most of the associated code, I'm a bit loathe to start over with win32lib and eu 4.0, so I might take a look at wget (thanks useless). I wasn't aware that you could use it for this kind of application. I assume I can't "capture" the data in the way I would be able to useing get_url(), but it's no big deal to save it to file and read from that.

20. Re: how to communicate with a server?

• Posted by irv Oct 16, 2010
• 1516 views

I doubt it comes with Windows - hardly anything useful comes with Windows.

You'll need to include the complete wget installer, since there are some dll dependencies as well as wget itself. You really should just use the TCP library mentioned earlier, so you can read & use the data directly, and have only 1 program for your users to install.

22. Re: how to communicate with a server?

• Posted by jaygade Oct 16, 2010
• 1452 views

wget is free software. It is distributed under GPL v3, so if you distribute wget with your own software, make sure to distribute a copy of the license as well.

As Kat says, you should be able to just dump all of its files into its own directory and run it from there. There are 4 DLLs and two EXEs distributed, along with a sample rc (configuration) file and a root certificates file for SSL (which is one of the EXEs distributed).