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World: r3wp

[!Cheyenne] Discussions about the Cheyenne Web Server

Kaj
9-Sep-2010
[8998]
Sure, but I need Library in Core to have it be meaningful in Syllable 
Server
Graham
9-Sep-2010
[8999]
So, it's just simply releasing rebcmd as core ....if the will exists
Dockimbel
10-Sep-2010
[9000]
Making the REBOL side process a command-line option for /Core and 
build option for /Command would be a good improvement.
Graham
15-Sep-2010
[9001x3]
What causes this error?


15/9-02:54:33.067-## Error in [task-handler-4721] : Make object! 
[
    code: 303
    type: 'script
    id: 'expect-arg
    arg1: 'protected-exec
    arg2: 'code
    arg3: [block! function!]

    near: [protected-exec/event request/parsed/file get in session/events]
    where: 'fire-event
] !
I'm trying to display the login.rsp page of a webapp
the login.rsp is straight from svn
Dockimbel
15-Sep-2010
[9004]
looking at login.rsp...
Graham
15-Sep-2010
[9005]
maybe it's a httpd.cfg error?
Dockimbel
15-Sep-2010
[9006]
From the error message, the error would come from an incorrect event 
definition in %app-init.r
Janko
15-Sep-2010
[9007]
errors like this are usually coaused by error in app-init.r yes
Graham
15-Sep-2010
[9008x2]
I deleted the app-init.r and still get the error
In fact I didn't have an app-init.r so added one
Dockimbel
15-Sep-2010
[9010]
IIRC, app-init.r is mandatory for a webapp, even if you don't use 
it.
Graham
15-Sep-2010
[9011x4]
so maybe that was the first issue.
put it back and restarted cheyenne
very odd .. I deleted the comments in on-application-start and it 
works now!
I can only guess that I didn't complete shut down and restart Cheyenne
Dockimbel
15-Sep-2010
[9015x2]
You should just "Reset Workers", it's enough to reload all the webapps. 
You should also consider running your dev instance of Cheyenne with 
-w 0 command-line option to make it reload all apps on each request.
I'm looking at the code in RSP.r and I can't figure out how you could 
raise such internal error. Can you please describe me the simplest 
way to reproduce that error?
Graham
15-Sep-2010
[9017x3]
reload all apps on each request?
The first thing I did was create a web app with no app-init.r
When I tried to access the login.rsp page I got that error.
Dockimbel
15-Sep-2010
[9020]
yes, the -w 0 option asks Cheyenne to maintain a pool of 0 worker 
process and launch one only when required (killing it when the request 
is completed). That has the side-effect or "reloading" all webapps 
and cleaning any corrupted data in memory produced by user-scripts.
Graham
15-Sep-2010
[9021x2]
what impact does that have on performance?
it sounds like it would slow it down to cgi ?
Dockimbel
15-Sep-2010
[9023]
yes, but you use it for the development only, not for production. 
I'm working with big RSP webapps and the slowdown with that option 
is barely noticeable.
Graham
15-Sep-2010
[9024]
oh .. ok
Dockimbel
15-Sep-2010
[9025x3]
I've removed %app-init.r from %www/testapp in Cheyenne's archive, 
started a fresh Cheyenne session, logged in http://localhost/testapp
and I can't reproduce your error. I only keep receiving this kind 
of (normal) error: 

##RSP Script Error: 

	URL  = /testapp/login.rsp
	File = app-init.r


 ** Access Error : Cannot open /C/Dev/Cheyenne/www/testapp/app-init.r 
	** Where: rsp-script 
	** Near:  [init: load join root %/app-init.r]
I've removed -w 0 option also to mimic your config, I'll try putting 
app-init.r back now.
Still no success in reproducing your error...
Graham
15-Sep-2010
[9028x2]
I renamed app-init.r in my svn version, started cheyenne and don't 
get any error
looks like the cheyenne I'm using is a build from middle of last 
year
Dockimbel
15-Sep-2010
[9030x2]
You should get some if you try to use any session object functions 
or access any session/content variables.
mid-2009? That's damn old :-)
Graham
15-Sep-2010
[9032x2]
it let me run the test rsp script
old .. yeah, but since I haven't had any issues, I don't change the 
server apps
Dockimbel
15-Sep-2010
[9034]
That's usually a good rule.
Graham
15-Sep-2010
[9035]
So, I guess no point trying to produce this error since I am using 
an old server build
Dockimbel
15-Sep-2010
[9036]
Right, there's more than 90 SVN revisions since july-2009...
Gregg
27-Sep-2010
[9037]
Is anyone using Cheyenne in an environment where they also use Ladislav's 
INCLUDE? The RSP handler has its own global INCLUDE func, which I 
think will conflict.
Ladislav
27-Sep-2010
[9038]
I am not, but last time I "felt" an Include conflict, it was very 
easy to resolve, in fact
Gregg
27-Sep-2010
[9039]
I'm sure it can be resolved. And if someone else has done it in such 
a way that you and Doc approve, I'll gladly borrow from them. :-)
Dockimbel
27-Sep-2010
[9040]
Gregg: 'include is not used internally by RSP engine, so you can 
freely redefine it, like that for example (not tested but should 
work) :

in %app-init.r :

on-application-start: does [

 set 'rsp-include :include 	;-- use 'rsp-include now for RSP script 
 inclusion

 unprotect 'include	;-- 'include is mark as protected by the RSP engine
	do %include.r 	              ;-- Ladislav's include script
]
Graham
27-Sep-2010
[9041]
So, this is a local 'do and not the '*do ?
Dockimbel
27-Sep-2010
[9042x2]
Depends if you want to keep that local to your webapp or share it 
for all your webapps (using do/global or *do in that case).
So, yes, it's a local 'do in my example above.
Gregg
27-Sep-2010
[9044]
Thanks Doc.
Gregg
28-Sep-2010
[9045]
Thanks again Doc, that lets me run things using INCLUDE. Now I'm 
on to the next issue, which is that it doesn't work (i.e. INCLUDE 
gets messed up) after running any kind of RSP. I'll dig in when I 
get a chance and tell you what I find.
Graham
28-Sep-2010
[9046]
did you try *do ?
Dockimbel
28-Sep-2010
[9047]
Gregg: I'll give it a try today to see what's going wrong.