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Caché Server Pages (CSP) is both an architecture and toolset used to build an interactive web applications with the InterSystems Data Platform.

Article Chris Stewart · Apr 21, 2017 3m read

or "Didn't you say you would cover Persistent Objects in Part 5, Chris?"

Yes, that was the plan.  This is a pretty important topic, so it get's its own Article

Up until now, we've display widget JSON that has been created by a basic loop.  Clearly this isn't of much value.  Now we have our stack connected together, and we can see that the data is flowing to the Welcome page, it's time to complete the stack and start feeding our service from "real" data.

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Question David Crawford · Jun 18, 2018

I thought I should be able to go to the application error log or look at d ^%ER when I get the following error in the browser when troubleshooting a CSP page:

An error occurred with the CSP application and has been logged to system error log (^ERRORS)

However nothing is being generated in these logs. Where are these logs being made?

Thank you

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Question Kurt Hofman · May 15, 2018

Hello, I'm trying to install CSP Gateway on Ubuntu 18.04 (Apache) with the installer CSPGateway-2018.1.1.638.0-lnxubuntux64.tar.gz but it doesn't seem to work.  I keep getting access-denied when I try to open CSP-pages or the CSP Management portal.

Does someone have an installation-manual or so ?

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Question Eduard Lebedyuk · May 9, 2018

I need to redirect user to a url, which is 5000+ characters long.
To do that I set:

set %response.Redirect = url

However, in the browser I receive this header:

LOCATION: <First 3972 characters of the 'url' variable>

In WriteHTTPHeader method of %CSP.Response, where the LOCATION header is
written:

Write "Location: ", <Redirect>,!

After I added a buffer flush, after the above-mentioned line:

Write *-3
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Article Vitaliy Serdtsev · Nov 17, 2017 6m read

This series of articles aims to address the following topics:

  • Creation of a web application based on REST pages;
  • Overview of some tools for tracing (debugging) HTTP requests;
  • Switching from hyperevents to... hyperevents;
  • Integration with jQuery File Upload;
  • Conversion of JSON from the {id:1,parentId:1} format to the {id:1,children:[{}]} format for tree visualization;
  • Integration with jQuery EasyUI (using datagrid and tree as examples);
  • Other topics.
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Question David Crawford · Jan 11, 2018

Hello everyone,

What has been the best way for you to store and retrieve session information about a user for CSP projects? I can use these methods easily:

CSP Session Management

however I'd like to know if there's a better way to keep more permanent information, or should it all be kept in a class?

Additionally, using whatever method, what would be the best way to block user access to certain portions of the website or entire pages? Such as an admin section. With normal web development this wouldn't be too difficult, but I need help connecting this into CSP terms.

Thank you!

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Question Sébastien Demoustiez · Nov 21, 2017

Hello Community,

I recently encountered a issue with Caché and I can't figure out where the problem is coming from.

I noticed that the license limit (200)  was reached whenever I was opening my Studio (so it seems). When this occurs, I restart Caché (with the Cube in the Taskbar), and the number of license used is back to 1%, but grows back after.  The time taken before the number of license  grows back again looks pretty random.

Here is a couple of screenshots :

Does anybody know where the problem might come from ?

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Question Wendy Griffiths · Nov 21, 2017

We have an web application accessed using https, that uses CSP technology with frames.

The initial 'login' is via a single CSP page, which then redirects to another CSP page which creates the frames (4 in all) and loads a CSP page in each of those.  For the most part the frames load without error, but sometimes when logging in and sometimes while using the system ' 5916 Illegal CSP Request ' errors occur.

I say 'login' in inverted commas as a Cache login is not performed just an application login, I don't know if that's relevant so thought I'd mention it.

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Question Alex Goncharov · Nov 6, 2017

Hello, evrybody, I'm writing one project using CSP("OnPreHTTP"), and also REST angular. At the beginning I wrote purely on csp, then I decided to use angular for the flexibility of the client part. Now I can not design logging, I created a table App.Log with properties

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Article Evgeny Shvarov · Oct 19, 2017 1m read

Sometimes you can face the situation when you did update the web app on Caché server but you cannot get the newest version of the app in a browser.

Here are couple recipes which help me to solve it. From simplest to more sophisticated and not obvious.

1. Refresh page in a browser

In Chrome it is Ctrl+R or 'Refresh' button. Obvious, but helpful.

2. Hard reset in a browser

If you are in Chrome, open Developer tools

and then right click on Refresh button.  Less obvious and very helpful sometimes.

3. Clear cache in CSP Gateway

If 1 and 2 don't work for you, try to flush the CSP Gateway cache.

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Question Fred Gustafsson · Aug 24, 2017

There seems to be a problem with the sync/save. If I open a CSP file, add a CRLF to end of it and save the file I get a  sync conflict. This can't be right.

To make matters worse I can then select to  the local version and will then end up in an infinite loop where the CSP import/compiler keeps adding more and more CRLFs to the file.

You can see an example here: https://youtu.be/EY-_FA-kOpI

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Question José Pereira · Oct 10, 2017

Hi everyone! My company has a Zen ERP application with CSP delegated authentication. Now, we're developing a separated BI application, using Angular, which consumes DeepSee REST API services. Both applications access the same Caché database.

How to implement single sign-on strategy in order to allow an already authenticated ERP user to access DeepSee REST services? Has anyone already implemented something like that?

Thanks in advanced.

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Question Orion Correa · Sep 25, 2017

I have an application that as part of the registration process is using reCaptcha to provide a captcha. The issue is that service is served from Google and is unavailable in certain countries, namely China. I've been researching this some and believe it's possible to proxy the requests to the Google CDN to avoid the Chinese firewall ban on Google URLs, however I'm not quite sure how to do this in CSP. 


Does anyone have suggestions on how to solve this, either with a technical solution or an alternative service I can fall back to?
An example would be greatly appreciated.


Thanks

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Question Sabarinathan M · Oct 4, 2017

Hi All,

    I need some clarification on web service (Soap Service). For each Soap request, system consuming 1 license and it is not releasing until CSP session timeout and extra grace period 5.10 minutes(310 seconds).
    Due to this, at some time license consumption is full.
    If i use with Login credential (i.e password authenticated web service), it consumes one license for 25 connections(request).
    But i need to use it as anonymous user(Unauthenticated).
    Please advice.

Thanks,
Sabarinathan M

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Question Thomas Li · Sep 26, 2017

Hi all-

We used to have this Java applet in our CSP page to "print all" and "download all" PDF medical reports.  We want this applet so that the user won't have to open each PDF in the browser just to print it.

But now most browsers do not support Java applets anymore due to security concerns, so that Java application is down.  We tried to migrate to Java Web Start but don't know how to invoke the JNLP file from the CSP page.  I am new to Cache so any help would be greatly appreciated.

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Question Güvenal · Sep 18, 2017

Hello,

I am working in a csp application where the user can configure a TCPS Service in a guide like manor.

So I want to be able to present a html <select> element, the values / text I want to present in this control should be the ID field from Security.SSLConfigs in the %SYS namespace.

How would I go about doing this? Can this be done?

Best regards,

Magnus

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Question Sean Connelly · May 10, 2017

I'm looking at adding multilingual support to a couple of open source projects I'm working on. The solutions are already developed in CSP so I am not looking for alternative approaches.

I'm wondering what would be the best approach for CSP and separate JavaScript files.

Initially I was wondering if I should bake the default system language text at compile time, or provide the end user with a language selection option at run time.

I came across $$$TEXT reading the docs...

https://docs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KE…

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Question Amir Samary · Sep 21, 2016

Hi!

I am not system admin. But it used to be very simple to install CSP Gateway on an apache system on Linux with Apache installed. I used to run the CSP Gateway installation program and after it was done, all I had to do was fine tune some configurations on CSP Gateway portal on http://<ip>/csp/bin/Systems/Module.cxw and I was up and running.

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