How to understand the HTTPRequest Error Object reference required

Question

Question

Thembelani Mlalazi · May 18, 2023

I am trying to call to a website that renders a xml structure as a response.if I put the url on the browser an xml rendered page is returned but if i call to this using the below code I get an object reference error which I am finding had to understand is there anyone who could help understand this error or point me in the right direction thanks.

Set tSC=$$$OK

  Set httpRequest = ##class(%Net.HttpRequest).%New() Set httpRequest.Server = "msedgewebdriverstorage.blob.core.windows.net"
Set httpRequest.Port=443
   Set httpRequest.ContentType ="application/octet-stream"
    ;;"application/xml"
    Set httpRequest.SSLConfiguration="Open"
    Set httpRequest.Https=1
    Do httpRequest.Get("/edgewebdriver"_$C(63)_"comp=list")


    Do $System.OBJ.Dump(httpRequest.HttpResponse)

please note the SSL is just an empty SSL configuration to be able to use https

Product version: Caché 2018.1

$ZV: Cache for Windows (x86-64) 2018.1.4 (Build 505_1U) Thu May 28 2020 10:01:40 EDT [HealthShare Modules:Core:15.032.9035 + Linkage Engine:15.032.9035]

Discussion (2)1

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Thembelani Mlalazi · Jun 1, 2023

Having tested this outside a restricted environment I realised my problem was the proxy server as the htttpResponse was not being instantiated, the work around was to use the proxy sever and running everything through the proxy tunnel.

ClassMethod MyReq()
{
set tSC=$$$OK
set req = ##class(%Net.HttpRequest).%New()
set req.Server = "msedgewebdriverstorage.blob.core.windows.net"
set req.ProxyPort=**
set req.ProxyServer="*******"
set req.ProxyHTTPS=1
set req.ProxyTunnel=1
set req.SSLConfiguration="Open" do:tSC req.Get("/edgewebdriver/?comp=list") Do $System.OBJ.Dump(req.HttpResponse)
quit tSC
}

0 0

score 0 · Answer 1 · 2023-05-18T06:24:15-04:00

I have no idea, from which error you talk.

ClassMethod MyRequest()
{
	set req = ##class(%Net.HttpRequest).%New()
	set req.Server = "msedgewebdriverstorage.blob.core.windows.net"
	set req.SSLConfiguration="Open"
	set req.Https=1
	do req.Get("/edgewebdriver/?comp=list")
	set rsp=req.HttpResponse
	
	if rsp.StatusCode=200 {
		write "Data Size: ",rsp.Data.Size,!
		write "Dumping the first 256 bytes..." zzdump rsp.Data.Read(256)
		
	} else {
		write "Return Code: ",rsp.StatusCode,!
		write "Resp.Phrase: ",rsp.ReasonPhrase,!
	}
	
	quit rsp
}

The output is just fine... no errors.

do ##class(...).MyRequest() --->

Data Size: 1832857
Dumping the first 256 bytes...
0000: EF BB BF 3C 3F 78 6D 6C 20 76 65 72 73 69 6F 6E         ï»¿<?xml version
0010: 3D 22 31 2E 30 22 20 65 6E 63 6F 64 69 6E 67 3D         ="1.0" encoding=
0020: 22 75 74 66 2D 38 22 3F 3E 3C 45 6E 75 6D 65 72         "utf-8"?><Enumer
0030: 61 74 69 6F 6E 52 65 73 75 6C 74 73 20 43 6F 6E         ationResults Con
0040: 74 61 69 6E 65 72 4E 61 6D 65 3D 22 68 74 74 70         tainerName="http
0050: 73 3A 2F 2F 6D 73 65 64 67 65 77 65 62 64 72 69         s://msedgewebdri
0060: 76 65 72 73 74 6F 72 61 67 65 2E 62 6C 6F 62 2E         verstorage.blob.
0070: 63 6F 72 65 2E 77 69 6E 64 6F 77 73 2E 6E 65 74         core.windows.net
0080: 2F 65 64 67 65 77 65 62 64 72 69 76 65 72 2F 22         /edgewebdriver/"
0090: 3E 3C 42 6C 6F 62 73 3E 3C 42 6C 6F 62 3E 3C 4E         ><Blobs><Blob><N
00A0: 61 6D 65 3E 31 30 30 2E 30 2E 31 31 35 34 2E 30         ame>100.0.1154.0
00B0: 2F 65 64 67 65 64 72 69 76 65 72 5F 61 72 6D 36         /edgedriver_arm6
00C0: 34 2E 7A 69 70 3C 2F 4E 61 6D 65 3E 3C 55 72 6C         4.zip</Name><Url
00D0: 3E 68 74 74 70 73 3A 2F 2F 6D 73 65 64 67 65 77         >https://msedgew
00E0: 65 62 64 72 69 76 65 72 73 74 6F 72 61 67 65 2E         ebdriverstorage.
00F0: 62 6C 6F 62 2E 63 6F 72 65 2E 77 69 6E 64 6F 77         blob.core.window

You have to work with the Data property of the response object (which is a 1.8MB stream)