Chilkat Software

June 4, 2009

Error: This application has failed to start because the application configuration is incorrect. Reinstalling application may fix this problem.

This error message is usually an indication that the VC++ runtime is missing on a system. Downloading and installing the Microsoft VC++ runtime that matches the version you need will fix this problem.  To find the redistributable at microsoft.com, Google using this search string “visual c++ redistributable 2005”.  Substitute “2008”, “2002”, or “2003” for different versions… For example, one recent […]

Uncategorized 0 44 sec read
June 4, 2009

Invalid class string / Invalid ProgID

This note applies to the instantiation of ActiveX components (not .NET assemblies). If a call to CreateObject (VBScript) or Server.CreateObject (ASP) or sp_OACreate (SQL) fails with the following errors: Invalid class string Invalid ProgID It indicates that the ActiveX has not been registered via regsvr32 on the computer, or the registry permissions on the ProgID key prevent the object from […]

Uncategorized 0 1 min read
May 28, 2009

Microsoft Certificate Support PDF

I found this PDF somewhere on Microsoft’s site, but now I cannot find it anymore.  Therefore, I uploaded it to here:  https://cknotes.com/microsoft-certificate-support.pdf This contains a collection of how-to procedures for certificates: Install certificate after deleting the pending certificate request (IIS 6.0) Installing Server Certificates (IIS 6.0) How to install a certificate for use with IP Security in Windows Server 2003 […]

Uncategorized 0 40 sec read
May 27, 2009

Date/Time Properties in Ruby

This is an example that generally applies to all methods/properties in the Chilkat API’s that return a date/time (for the Ruby programming language) sysTime = Chilkat::SYSTEMTIME.new() # Get the last-mod date/time fileObj.GetLastModifiedTime(sysTime) lastModTime = sysTime.wMonth.to_s() lastModTime = lastModTime + “/” + sysTime.wDay.to_s() lastModTime = lastModTime + “/” + sysTime.wYear.to_s() lastModTime = lastModTime + ” ” + sysTime.wHour.to_s() lastModTime = lastModTime […]

Uncategorized 0 21 sec read
May 15, 2009

(FTP) WSAEACCES An attempt was made to access a socket in a way forbidden by its access permissions

Question (solution is below) Today one of my customer’s got the following connect error when running my application. This same application works just fine on my system as well as almost 100 others. It had run correctly on her computer until she installed an upgrade. The connect error is: Port: 21 Host: www.***.com sockError: 10013 Connect: failed WSAEACCES An attempt […]

Uncategorized 0 48 sec read
May 15, 2009

FTP Upload Speed

Question: We’re rather puzzled by what appears to be capped speeds on uploads, despite no cap being set. Testing uploads, we’re seeing about 350 KB/s via the Ck library to our (local network) FTP server. A FileZilla transfer of the same file to the same server can happily hit up to 7MB/s. I realize Ck supports bandwidth throttling, but those […]

Uncategorized 0 59 sec read
May 1, 2009

VB6 – SHA-1 Hash and Base64 Encode

Private Sub Command1_Click() Dim crypt As New ChilkatCrypt2 success = crypt.UnlockComponent(“30-day trial”) If (success = 0) Then MsgBox crypt.LastErrorText Exit Sub End If Dim plainText As String plainText = “To be SHA-1 hashed…” crypt.EncodingMode = “base64” ‘ Hash the string and base64-encode in 1-Step Text1.Text = crypt.HashStringENC(plainText) ‘ Now do it in 2-steps. Should produce the same results as for […]

Uncategorized 0 29 sec read
May 1, 2009

C++ String Compression: PPMD, Deflate, BZip2, LZW

This C++ example demonstrates string compression using four different compression algorithms: PPMD, Deflate, BZip2, and LZW. void TestCompression(const char *algorithm) { CkCompression comp; comp.put_Algorithm(algorithm); printf (“algorithm: %s\n”,algorithm); CkByteData compressedData; comp.CompressString(“abc abc abc abc abc abc abc abc abc abc abc 123 123 abc 123”,compressedData); // Get the compressed data: const unsigned char *pCompressedData = compressedData.getBytes(); unsigned long numBytes = compressedData.getSize(); […]

Uncategorized 0 55 sec read
April 30, 2009

Multipart/signed Email Handling

When a signed and/or encrypted email is loaded from a file or downloaded from a mail server, it is automatically verified and/or decrypted.   The results are stored in various properties of the email object, and the email object is available in its unencrypted/unsigned form.  This means that your application can process signed/encrypted emails in the same way as non-signed/non-encrypted email.  […]

Uncategorized 0 54 sec read
April 24, 2009

Forcing Web Server to Deliver Fresh (Non-Cached) Response

To force a web server to send a fresh copy (not a cached copy) of the requested document, add a “Pragma: non-cache” HTTP header to the request. If sending a HTTP GET request via these methods: QuickGet, QuickGetStr, Download, etc., then add the Pragma header by calling httpObject.SetRequestHeader(“Pragma”,”no-cache”) prior to sending the GET. If the Chilkat HTTP Request object is […]

Uncategorized 0 1 min read

Tags

ActiveX asp async asynchronous C# callbacks Delphi email Encryption error messages events exchange server FTP GMail HTTP IMAP IOS Java Linking MIME oauth2 Office365 pfx PHP pop3 port-forwarding regsvr32 release notes RSA SFTP smartcard SMTP socket SSH SSL TLS tunnel upload vb6 VBScript VC++ x64 xades XML zip