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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 Patrick Dunn · Sep 29, 2020 4m read

In the WRC, we frequently see customers contact us because their Web Gateway is unable to serve web pages. This article will explain a frequent reason why these errors can occur, and explain some tools which can be used to debug the problem. This explanation is focused on the Web Gateway serving InterSystems IRIS instances, but the same explanation should apply to the CSP Gateway serving Caché instances as well.

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Question omer · Jan 15, 2025

Hey, So the title pretty much describes the question:
Where and How can i see the Stream that contains the response back to the client of a CSP application.
When the request is being processed and finished we return a response to the client - We do that by writing the data to a stream and that stream is sent back to the client.
I wanted to know how i can access the point right before that Data is actually written to the client back (meaning the place where the response is actually being send back, the last point of contact).

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Question Martin Nielsen · Jan 23, 2025

Hi, I am currently setting up a new API using %CSP.REST - I've gotten swagger spec generation to work like such:

ClassExtends%CSP.REST
%CSP.REST

This correctly reads all the endpoints inside the TestController based on the UrlMap, but it does not know the return type

I would like to be able to add additional info to each individual endpoint, for starters to manually define the possible return types/objects, as well as parameters from the %request, directly inside a comment above the ClassMethod.

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Question Craig Regester · Apr 18, 2016

We are currently looking into a way to provide a group of end-users (i.e. non-Interface Development engineers) access to a pre-defined group of Ensemble-based Data Lookup Tables for purposes of viewing and editing. We do not want to give them access to ALL Data Lookup Tables due to security/continuity concerns.

My thinking is that a simple persistent Cache table with three columns (Role Name,  Table Name, Access-Level [like View or Edit]) with a CSP front-end could potentially provide an easy way to make this solution a reality.

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Question omer · Jan 12, 2025

Hello, 
In short, I am trying to get the Content-Length of my response, 

We have a CSP application, when we get a new request we begin to process it, throughout the app we WRITE to the response in different places, 
now when the response is about to be sent back to the client - we would like to know its Content-Length (in the RESPONSE HEADERS). 
So it comes down to two questions:
1. How can we access the Content-Length of our response?

2. In case we CAN'T - Where in the broker.cls/page/base classes can I observe the moment we actually write the response itself and attach its headers?
Thank you!

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Question Dan Murt · Jan 3, 2025

Hi Community,

I have a CSP page I am developing with the intent of pulling files from an SFTP site and placing them in a folder on the local network.

I am having an issue where the CSP page is catching a JS error. The error in the browser is - A JavaScript exception was caught during execution of HyperEvent: SyntaxError: Unexpected identifier 'downloading'. (However, the unexpected identifier changes after refreshing page, or after removing the Write statement with the work 'downloading' in it.)

I think I have narrowed it down to a piece of the Javascript code - 

#server(

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Question Shanwen Liu · Dec 10, 2024

Hey everyone, I am implementing version control with git-source-control on our codebase and I ran into a pretty strange issue. I believe I have the set up (mostly) correct as the behavior with .cls files is exactly as expected. However, I noticed that git is not keeping track of any changes to CSP files.

Specifically, if a new CSP file is created and saved, I will get the following output:

exporting new version of /csp/testdb/wrc.csp to C:\InterSystems\IRIS\mgr\repo\TESTDB\csp\testdb\wrc.csp

Added /csp/testdb/wrc.csp to source control.

C:\InterSystems\IRIS\mgr\repo\TESTDB\csp\testdb\wrc.

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Question Norman W. Freeman · Nov 7, 2024

Is there any mechanism already implemented in IRIS to prevent XSS exploits ? 

This case happen when user input html/javascript content into fields and submit the page. If saved content is rendered as is, it's going to be executed by anyone visiting the page.

What I am looking for : 

  • Built-in protection mechanisms that can be enabled globally (eg: per web application) or per CSP page. Something similar to a web application firewall.
  • Functions to call manually that can detect such content in fields or sanitize them (remove unwanted content).
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Question Mike Yackanich · May 27, 2021

Hi all,

I'm performing a migration of some services from one instance to another, and I noticed that the technique defined within the InterSystems Server Migration Guide does not include OAuth client configurations. The recommended technique is to use the ##class(Security.System).ExportAll() and ##class(Security.System).ImportAll() methods.

Is there a way to migrate OAuth client configurations, or do those have to be re-created manually?

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Question Pietro Di Leo · Nov 20, 2024

Hi everybody, 

I'm modifying a REST interface for a client but it seems impossible to me to modify HTTP Response Status and including custom HTTP Headers either.

My dispatch class (extending %CSP.REST) is contacted through a POST request and the latter is processed in a custom class (extending %CSP.REST as well) accessed as shown in the example below:

  <Route Url="/test" Method="POST" Call="Custom.Test:Process" />

Within the processing class I tried executing the following statements with no success:

Do%response.SetHeader"totalcount"
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Question Alexander Rischke · Nov 22, 2024

Good morning dear community,

This is like my first post in this community. Let's see how this turns out.
I have a question about the Intersystems Kubernetes Operator and the deployment of the webgateways.
I am responsible for the hosting and deployment of the apps. For the future we are planning to host our application in a kubernetes cluster. I am using the IKO for this.
I am using webgateways, for external access as separate pods. And sidecar containers for internal access, like the management portal.

My current Problem is the configuration of the webgateways.

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Question Joost Platenburg · Nov 13, 2024

I'm trying to rewrite a legacy portal created with all .csp files into a portal written in .cls files. The problem I have is that the old cap pages use "csp:include page='page.csp'> tags. I'm trying to use the Include method  that is in the %CSP.Page master page. It doesn't seem to insert the required file. Any suggestions?
 

<table width="100%">
<tr>
<script language="Cache" runat="server">
do ..Include("pubsub/portal/include/headLogoDXC.csp")
#; <!--csp:include page="/pubsub/portal/include/headLogoDXC.csp"-->
</script>
</tr>
</table>
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Question Yone Moreno · Nov 4, 2024

Hello,
Please, we would need your help 🙂:

In a development environment, we have added quite a few presentation contexts to the DICOM configurations (the associations). We would need to find a way to export them from this environment to make it easier for us to import them in PRO (and avoid doing it by hand one by one).

We know that there is this method, the ImportAssociation(), that given a file, and the names of the local AET and the remote AET, creates it automatically:
    https://docs.intersystems.com/irisforhealthlatest/csp/docbook/DocBook.U…?

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Article Guillaume Rongier · Jul 8, 2024 6m read

fastapi_logo

Description

This is a template for a FastApi application that can be deployed in IRIS as an native Web Application.

Installation

  1. Clone the repository
  2. Create a virtual environment
  3. Install the requirements
  4. Run the docker-compose file
git clone
cd iris-fastapi-template
python3 -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt
docker-compose up

Usage

The base URL is http://localhost:53795/fastapi/.

Endpoints

  • /iris - Returns a JSON object with the top 10 classes present in the IRISAPP namespace.
  • /interop - A ping endpoint to test the interoperability framework of IRIS.
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Question Yone Moreno · Oct 18, 2024

Hello,

First of all: thanks for your help, and thank you for your time.

Thanks for your time.

We have the following situation:

We are in a BPL, and we have defined 4 <call> asynchronous as follows:

First one name: "Enviar a Proceso NEGRIN"

The second one, named as: "Enviar a Proceso HUNSC"

The third one, titled: "Enviar a Proceso CHUIMI 02"

And the fourth and last one names as: "Enviar a Proceso Fuertev"

Inmediately after the 4 calls, we have a <sync> instruction which should wait for all of them to finish.

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Question Chris Lambert · Oct 17, 2024

Hello,

I'm trying to carry a custom error from one business process to another.

BPL:LookupClass fails it's lookup and a custom error of "Lookup XYZ" is generated.

The class quits with that error, but upon quitting, the custom error gets wrapped in an Ensemble System error: 

ERROR <Ens>ErrBPTerminated: Terminating BP LookupClass # due to error: Lookup XYZ

This means, when I use the %LastError property to get the error message, it's not got the value I want to use. In this case, "Lookup XYZ".

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Question Martin Nielsen · Aug 21, 2024

We have a CSP pages script, which gets and sets a cookie for email tracking purposes, we had problems with cookies not being passed to this script when the URL was opened from an email client due to being cross-site, so I set Session Cookie Scope & User Cookie Scope to None instead of Strict.

This solved the issue with cookies not being passed, however the script entirely does not work anymore due to the error:

"Invalid CSP response cookie. SameSite cannot be set to None without Secure.

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Article Guillaume Rongier · Jul 8, 2024 8m read

django_logo

Description

This is a template for an Django application that can be deployed in IRIS as an native Web Application.

Installation

  1. Clone the repository
  2. Create a virtual environment
  3. Install the requirements
  4. Run the docker-compose file
git clone
cd iris-django-template
python3 -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt
docker-compose up

Usage

The base URL is http://localhost:53795/django/.

Endpoints

  • /iris - Returns a JSON object with the top 10 classes present in the IRISAPP namespace.
  • /interop - A ping endpoint to test the interoperability framework of IRIS.
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Question Yone Moreno · Jul 4, 2024

Hello,

First of all thanks for your time reading this question, and thank you for your help.

🎯 We would need to create an Ensemble HealthShare Operation to read files from a FTP / SFTP server.

We have coded:

ClassExtendsParameterAs

When we try this operation from the Web Portal, we always get the following result:

First loginfo outputs: "ERROR #00: (sin descripción de error) [no error description]"

Second loginfo shows: 0

We have verified that the IP and Port of the server are correct, but we do not understand why it does not connect.

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Question Aman · Jul 2, 2024

Hello Community,

I'm a beginner and currently working on a project to convert CCDA files to FHIR using InterSystems IRIS. I have developed a web form to upload CCDA files, and I'm attempting to convert the uploaded CCDA files to FHIR. However, I am encountering an issue where the conversion process results in an empty entry.
Here's the Output it displays on HTML page:

Size of CCDA Stream: 741524

Here is my code: CCDtoFHIR.csp

htmllang<</<br<brul

Problem Description:

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Question Matheus Augusto · Jun 13, 2024

Is there any way to include a CSP page within a CLS?
Example: #Include file.csp 

Context: I work with a legacy that most screens are built using only CLS. I'm trying to change this by separating the frontend layers to be built only with CSP and backend layers using CLS. I improvised a method that injects an iframe to render the CSP in CLS through that iframe, but I'm still not happy. I need to know if there is any way to include this CSP using some specific resource for this.

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Question Yone Moreno · Nov 22, 2023

Hello,

First of all thanks for your help.

We have the following scenario: some responses include special characters as ">" and "<" which are being put inside a property defined as:

Property PACPROBLEMAS As %String(MAXLEN = "", XMLNAME = "PAC_PROBLEMAS");

So then, when we observe the LOG SOAP it shows that the Target System replies to the ESB as follows:

➡️ <PAC_PROBLEMAS>46807#278.

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Question Pascal Breugelmans · Jun 3, 2024

After upgrading we had 2 major problems with the new version:

- Resending messages adds blank lines.
Because we have many HL7 processes, we regulary have to resend messages if there is an outage of a server we connect with.

- IIS recycling causes webgateway connection problems, after change from PWS to IIS.
At unexpected times a connection can no longer be made.
The strange thing is that it does not occur with every recycle of the application pool.
Setting the password again in csp.ini usually works, but not always, which is of course a major problem.

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Question Bransen Smith · Apr 23, 2024

I am attempting to configure an inbound service that utilizes the EnsLib.SOAP.GenericService class. This service receives HL7-v3 content wrapped in SOAP requests. Despite reading the documentation on configuring SOAP services, I am still confused.

In my current configuration item "Fr_Centrak_RTLS", I have ‘Enable Standard Requests’ checked, ‘Pool Size’ set to 0, and the port is unspecified.

I have also configured a web application with the following details:

My challenge is determining the correct URL address for sending SOAP traffic to this service.

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Article Rob Tweed · Apr 30, 2024 3m read

A few weeks ago I posted an announcement about a JavaScript-based interface for our mg_web WebServer interfacing addon module.  mg_web isn't just restricted to use by JavaScript developers though.  Many readers will be ObjectScript developers who are more used to using CSP as their web gateway.  Some may even have much older legacy WebLink-based applications (and be wondering how to support them given that IRIS does not support WebLink).

This article aims to provide some more information on mg_web and to explain why it's worth a look for ObjectScript developers.

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Question Colin Gadumer · Apr 2, 2024

I'm currently fighting with SoapUI to get the HS WSDLs imported.

My first issue is, the IRISUsername and IRISPassword parameters don't seem to work.

i've tried the following url:

https://ifwap0661.ad.klinik.xxxyyy.de/ucrdev/csp/healthshare/hsreposito…

result:
Error loading: org.apache.xmlbeans.XmlException: org.apache.xmlbeans.XmlException: error: The entity name must immediately follow the '&' in the entity reference.   

not entirely sure what is happening here.

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Article Hiroshi Sato · Apr 4, 2024 1m read

InterSystems FAQ rubric

The Web/CSP Gateway management page is typically configured so that it cannot be accessed from client machines.

To access from any client, do the following:

  1. Launch a browser from a system with access to the Web/CSP Gateway management page and access the Management Portal.
  2. Under Management Portal > System Administration > Configuration > click CSP Gateway Management.
  3. Click Default Parameters that appear in the left pane of the page that appears.
  4. Enter *.*.*.* in the system management machine and press the Save Settings button.
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