November 18, 2019

Working with Huge (Extremely Large) JSON Files

Question: I am using the following calls in Visual FoxPro with Chilkat_9_5_0.JsonObject (9.5.0.80) and the resulting JSON is writing only {} oChilkatJson=Createobject(‘Chilkat_9_5_0.JsonObject’) oChilkatJson.LoadFile(“pathToLargeJSONFile”) oChilkatJson.EmitCompact=1 =STRTOFILE(oChilkatJson.Emit(),pathToOutputFile) Original Size of JSON: 259 MB (271,982,395 bytes) New JSON outputs as: {} I could use the https://www.example-code.com/foxpro/create_complex_json.asp​ to read and write each JSON property/object to memory and perform the one EMIT() a the end, I would think it would […]

Uncategorized 0 2 min read
November 18, 2019

Generated Code for XAdES Signing Certificates

Question: I am user of your component and I have problem with signing XML files. I got (invalid) ds:Signature with same not replaced text “TO BE GENERATED BY CHILKAT” in tree node (SigningCertificate|xades:Cert[1] and SigningCertificate|xades:Cert[2]) The SigningCertificate|xades:Cert[0] is valid. … CkXml object1; object1.put_Tag(“xades:QualifyingProperties”); object1.AddAttribute(“xmlns:xades”,”http://uri.etsi.org/01903/v1.3.2#”); object1.AddAttribute(“xmlns:xades141″,”http://uri.etsi.org/01903/v1.4.1#”); object1.AddAttribute(“Target”,”#xmldsig-0d264d45-0a6a-4431-8e74-35463a71756c”); object1.UpdateAttrAt(“xades:SignedProperties”,true,”Id”,”xmldsig-0d264d45-0a6a-4431-8e74-35463a71756c-signedprops”); object1.UpdateChildContent(“xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime”,”TO BE GENERATED BY CHILKAT”); object1.UpdateAttrAt(“xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod”,true,”Algorithm”,”http://www.w3.org/2000/09/xmldsig#sha1″); object1.UpdateChildContent(“xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue”,”TO BE GENERATED BY CHILKAT”); object1.UpdateChildContent(“xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName”,”TO BE […]

Uncategorized 0 2 min read
November 13, 2019

Generating Code to Create XMP XML

The Chilkat Xmp class provides the abililty to insert/update/remove/extract XMP metadata from JPEG and TIFF image files.  In addition, the XMP API provides helper methods to make it easier to construct XML according to XMP specifications.  These methods are usually sufficient, but may lack flexibility to create more complex XMP metadata.  An alternative approach is to use Chilkat’s online code […]

Uncategorized 0 11 min read
November 13, 2019

Solved: Unable to load ‘chilkatDnCore-9_5_0’ or one of its dependencies in Azure functions

Problem: I was using Chilkat to sign xml messages, very similar to one of your examples:  https://www.example-code.com/dotnet-core/fatturapa_cades_bes.asp The code was deployed as an Azure V2 function written in .Net Core 2.2 It worked without problems for months, but then after one deploy last week it started crashing on the line: new Chilkat.Global().UnlockBundle(ChilkatKey); It works locally, and only fails in production […]

Uncategorized 0 1 min read
November 11, 2019

Q/A 11-Nov-2019 (Thread Safety)

Question: We have a desktop application(client) that can communicate to many devices(servers) at the same time. A different thread pool is used for each device communication, so they do not block each other or the main thread. Because of the issue earlier, I am using the same http object for all communications. Most of the requests are very quick (~ […]

Uncategorized 0 2 min read
October 30, 2019

Q/A 30-Oct-2019

Question: I updated from an older version of Chilkat to the latest version, and the following CkFtp2 (C++) methods no longer exist:  GetLastAccessDt and GetLastAccessDtByName.  What happened to them? Answer: These methods were deprecated a while ago, and were finally removed.  I’ll explain.  (The methods still exist in the ActiveX because it’s not possible to remove methods in the ActiveX […]

Uncategorized 0 46 sec read
October 25, 2019

Q/A 25-Oct-2019

Question:  One of my suppliers has provided a certified x509 certificate p12, in order to connect to his WS Soap. Developing in the Visual FoxPro environment, I ask you if you have libraries with examples that can be used for this purpose. Answer: I’m assuming the .p12 is to be used as the client certificate for the TLS connection.  (Using […]

Uncategorized 0 3 min read
October 6, 2019

Error: Node.js requires NODE_MODULE_VERSION 72

Question: I am trying to use the Node.js library with node installed through home-brew, but I get this error when executing an example script: Error: The module ‘/Users/x/node_modules/@chilkat/ck-node11-macosx/chilkat.node’ was compiled against a different Node.js version using NODE_MODULE_VERSION 67. This version of Node.js requires NODE_MODULE_VERSION 72. Please try re-compiling or re-installing the module (for instance, using `npm rebuild` or `npm install`). […]

Uncategorized 0 44 sec read
October 2, 2019

HMRC Ending Support for TLS versions 1.0 and 1.1

Question: We use your system to submit to VAT returns to HMRC using Making Tax Digital. Does this TLS stuff mean anything to you?  The only reference I can see to it in the code is setting a TLS Boolean to true, which doesn’t specify a version? (This is a portion of the notice from HMRC) “Your application should now […]

Uncategorized 0 1 min read

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