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World: r3wp

[!Cheyenne] Discussions about the Cheyenne Web Server

Janko
21-Dec-2009
[6566x2]
I didn't see this locally because locally I don't use virtual host, 
but just default
anyone using cheyenne with webapps / app-init.r and virtualhosts 
at the same time?
Graham
21-Dec-2009
[6568x3]
Yes, but all my app-init.r are the same for each virtual host.
My recollection is that I had some initializing variables in app-init.r 
but ...they crossed vritual hosts.  So, I removed them and placed 
them into rsp files instead.
Ie. I was seeing a similar bug.
Janko
21-Dec-2009
[6571]
I have different app-inits, one loads mysql other sqlite, sets different 
session keys, loads app specific modules
Graham
21-Dec-2009
[6572x2]
My impression was that app-init is not isolated from other virtual 
hosts
and other web apps
Kaj
21-Dec-2009
[6574]
Dunno about app-init, but on 0.9.18 my logs seem to mix up accesses 
to different virtual hosts
Will
21-Dec-2009
[6575x2]
Kaj, about logs that has been fixed a couple months ago, I can only 
suggest you all run latest svn
Janko, I have many app-init.r and do not see any problem, if you 
sand me your app-init from both virtual host and tell me exacltly 
what is the problem you are seeing, I'll be glad to check that
Janko
21-Dec-2009
[6577x3]
maybe I should download from svn too then. Just some do/global and 
session/add. I tested many times and I can clearly see that whichever 
I visit first after restart becomes "global" and runs also in webapp 
on different v-host. I will try with svn version and report. Maybe 
this problem and problem with logs are related and were both solved 
back then.
http://paste.factorcode.org/paste?id=1069~ here it is
hm, the tabs got confused
Dockimbel
21-Dec-2009
[6580x5]
Janko: webapps are per Cheyenne instance, not per virtual host. What 
is specific to a virtual host : webapp virtual path and other config 
options. I'm not sure to understand how you've configured your (or 
yours?) webapp(s). You can send me your virtual hosts config privately 
so I can see what's your need.
Hmm, I think that the way I've used "webapps" in my previous msg 
is confusing, I was referring to a "web application" built using 
RSP scripts not the "webapp" keyword used in config file. A web application 
(along with its app-init.r file) is unique. OTOH, a webapp config 
is per virtual host.
Kaj: the bug you're referring to has been fixed in v0.9.19 released 
on 1st march 2009. Time to upgrade. ;-)
Janko, about the app-init code you've uploaded, just a side note 
: you're loading a *lot* of code (libs?) on each RSP request, this 
is surely slowing down each request a lot. You should be loading 
all these libs in 'on-application-start instead. (btw, "simpauth.r" 
is loaded twice)


About local testing, you can use virtual hosts locally too in Windows 
easily. Just add them to C:\Windows\System32\drivers\etc\hosts file. 
Add them all after 127.0.0.1 (but do not use exactly the same domain 
name as the remote ones or you won't be able to access them anymore). 
I use shortcuts of my real domains for locals : softinnov.org => 
si.org, curecode.org => cc.org, etc...
About multiple Cheyenne instances running at the same time, I'm finishing 
a new version supporting that feature. It took me more time that 
I thought first due to additional OS specific code required (wasted 
a lot of time on OS X). Still a few minor things to fix, tweak and 
test. It should be available by tomorrow.
Janko
21-Dec-2009
[6585x4]
@Doc: 

- I am not totally sure I correctly understand what you mean about 
webapp. I will need to process and try it some more.

- About code loading on on-page-start : yes I know of that, I am 
using it as dev setup so I know latest code is reloaded each pageload. 
I intend to set it on     on-application start when fully in production 
(But I have to admit the server is bgehaving really fast even with 
this setup all along)
- good catch, I will remove one simpauth.r

- I am aware of hosts file, but so far decided to edit the cfg file 
each time I switch ... which is in retrospect getting a little tiresome 
with more and more apps so I should think of  some naming convention 
for getting to all domains local and do it that way yes

- great for multi instance support . I also already ported site-assistant 
to 0919. it was much less work than I thought.. mostly just few things 
like do -> do/global and some 3 other tricks (no really aplication 
level changes were needed)
Thanks for replies :) .. I will think some more about app-init.r 
and what you told and then send you the concrete example
and I will recreate multiple virtual hosts on local also before so 
I see how it works here
(I sent you email with files and video)
Will
21-Dec-2009
[6589x3]
Janko, about the app-init code you've uploaded, just a side note 
: you're loading a *lot* of code (libs?) on each RSP request, this 
is surely slowing down each request a lot. You should be loading 
all these libs in 'on-application-start instead.

 or you can add them in the httpd.cfg in a worker-libs block, look 
 in Cheyenne/changelog.txt for 'worker-libs'
HAHA, looks like osx is a time waster, for Dock but for Carl as well 
8-)
Me I suggest something like domain.lan or domain.local for local 
testing
Pavel
22-Dec-2009
[6592]
Maxim your associative datasets are in memory or in disk, are you 
using any index or simply search thru dataset?
Dockimbel
22-Dec-2009
[6593x2]
Will: good suggestion, local domains extensions are not restricted. 
I like the .lan :-).
Janko: I'll give it a deep look today.
Kaj
22-Dec-2009
[6595]
Cool, thanks Doc. I didn't report it because I'm on an older version. 
It works OK for the rest, so no rush to upgrade yet
Terry
22-Dec-2009
[6596]
think built-in JSON support, COMET, etc
Comet is dead.. look into Websockets
Dockimbel
22-Dec-2009
[6597x2]
SVN r42 : mutiple Cheyenne instances now supported. Please test it 
fully before putting in production.
OS X version not tested but should run ok.
Terry
22-Dec-2009
[6599]
Seriously, if you jump on the websocket server protocol, you can 
quickly promote Cheyenne to the masses.. but if you wait, you'll 
lose the window of opportunity.
Dockimbel
22-Dec-2009
[6600]
Cheyenne is not ready for the "masses" yet. No docs, no UI for config 
options,...
Terry
22-Dec-2009
[6601x4]
by "masses" i mean the geeks
web sockets are an HTML 5 spec
I imagine you could build a web socket protocol with Cheyenne in 
a few hours.. would take me a week
the protocol, by the way, is ws:// or wss:// for SSL
Dockimbel
22-Dec-2009
[6605]
Apache already supports web sockets using a python plugin : http://code.google.com/p/pywebsocket
Terry
22-Dec-2009
[6606x4]
Yeah, I've played with it. It's cumbersome.
Here's the W3C Web Sockets API if you're feeling so inclined. 
http://dev.w3.org/html5/websockets/#the-websocket-interface
Not sure if you recall, but the work I was doing with Cheyenne was 
trying to implement  Web sockets before Web sockets even existed.
I think you described it as "no longer HTTP" or something to that 
effect :)
Dockimbel
22-Dec-2009
[6610]
I'm having a quick look at the ws protocol, just curious to see how 
it has been designed.
Terry
22-Dec-2009
[6611x2]
The problem I've always had with Cheyene and Uniserve services was 
the 'disconnect' between the two.. ie: having a uniserve 'socket' 
connect with an 'http' connection and vice-versa.  The ws:// protocol 
was what i was looking for.. the best of both worlds. Deliver some 
hypertext, then push data to javascript in the browser.
It's pretty straight-forward.. check out this PHP web socket server 
.. 140 lines

http://code.google.com/p/phpwebsocket/source/browse/trunk/phpwebsocket/server.php
Dockimbel
22-Dec-2009
[6613x2]
Cheyenne is already doing such kind of "connections", for example, 
PHP requests : HTTP => Cheyenne => TCP => PHP server.
Thanks for the PHP server script...looks pretty simple to implement.
Terry
22-Dec-2009
[6615]
Yeah, it seems like a no-brainer for Cheyenne to easily implement 
this new protocol... at least for a Cheyenne guru.