[ object aggregate ] error on making a 'GET' request to a server

[nishant13]

Hello community,

I have been trying to write a JavaScript extension which makes a 'GET' request to a server on pressing of a sub-menu item in Adobe Acrobat professional. After writing the script after following from an online resource(https://gist.github.com/randycasburn/802f278c3cfef0873dd086c34bbb9fee), I tried executing the folder level script but it gave an 'object aggregate' error in console. I tried looking for it online but could not found anything helpful. I think the issue is with the request which is not able to fetch data. Below is the script for the same. Any help regarding this would be greatly appreciated.

Thanks.

// Make HTTP GET request
ajax = app.trustedFunction(function(fURL) {
app.beginPriv();
Net.HTTP.request({ cVerb:"GET", cURL:fURL, oHandler: ajaxCallback});
app.endPriv();
});

// process the response
ajaxCallback = {
response:function(msg,uri,e){
var stream = msg;
var string = "";
var error = e == undefined? 'No HTTP errors' : "ERROR: " + e;   // here it is giving [ object aggregate ] error

console.println(error);

// string = SOAP.stringFromStream( stream );
//  oResult = JSON.parse(string);

// console.println(error);
// console.println( "id: " + oResult.id);
// console.println( "userId: " + oResult.userId);
// console.println( "title: " + oResult.title);
// console.println( "body: " + oResult.body);
}
};

// Add menu item to kick it all off
app.addMenuItem({
cName: "Get Mock Data", cParent: "File",
cExec: 'ajax("https://jsonplaceholder.typicode.com/posts/1");',nPos: 0});

Below is the screenshot of the error:

[Test Screen Name]

Please copy and paste the entire console message. There is often more clue around the message than it first appears.

[nishant13]

updated now.

[Test Screen Name]

Actually, I think the problem is that "e" is not a string, and cannot be made one. 

oException An exception object if the method was not successful. The
exception object has the following properties:
error — the HTTP status code that was returned.
msg — An error message associated with the failure.

[try67]

Change:

"ERROR: " + e

To:

"ERROR: " + e.toString()

[try67 · Accepted solution]

(and if toString doesn't work try toSource)

[nishant13]

Thanks! It worked. But now it is showing "error:-8","text: There was a problem connecting to the server ", "type: Network Error". Any clue as to why is this error?

[Test Screen Name]

Ah, I understand. There is no error. This is not a JavaScript failure or error message: it is YOUR message, as created in the line you noted: var error = e == undefined? 'No HTTP errors' : "ERROR: " + e; 

because the value of e, which is an object, if you force it into a string context is "[object Aggregate]".

So I hope from the other replies you now know why this happens, and how you might make the message more useful to you in solving failure of Net.HTTP.request.

[Test Screen Name]

I tried your code, with your sample site. When I run the menu item I get No HTTP errors returned. Maybe you have a firewall/whitelist issue.

[nishant13]

Oh okay.Thanks a lot! So is this issue URL specific or what and how can I fix the firewall issue?

[Thom Parker]

I've used this function quite a bit. You'll find a tester app here:

If it's having a connection problem it's likely that either the URL is bad, or required header parameters are missing. 

https://www.pdfscripting.com/public/HTTP-Access-Tester-Description.cfm

[nishant13]

I am sorry but I guess this service is paid. Is there any free service?

[Thom Parker]

Debugging HTTP issues is difficult because there are so many different things involed, the client platform (Acrobat JavaScript), the target server, server security, the target script and it's requirements, cookies, etc.  

I created this tool as a test frame so at least I could get a handle on the client. If you want something for free I would suggest writing your own. 

As for figuring out your issue. Acrobat does not provide particularly detailed or acurate error messages. Really all you know is that the server is not responding.

Can you use a browser to test the server side interaction? If this is true, then use the developer tools on the browser to which headers are used. Also, the site your hitting is HTTPS. Are the security issues? perhaps the encryption level?