Latest notes, articles, and news
NOTE: If this error occurred while trying to establish an FTP data connection, also see this: https://cknotes.com/?p=282 A WSAEWOULDBLOCK error when trying to establish a TCP/IP socket connection indicates one of the following conditions: A firewall at either the client or server side is blocking the connection. There is no server listening at the remote host:port to accept the connection […]
This blog post shows how to monitor the progress of HTTP uploads and downloads in C++. The first step is to create a C++ callback class that derives from the CkHttpProgress base class. You’ll be overriding one or more of the callback methods. For example: class MyHttpProgress : public CkHttpProgress { public: MyHttpProgress(void) { } virtual ~MyHttpProgress(void) { } void […]
Question: I have a Base64 decode error, as follows: CkString str; str.setString(“16q”); str.base64Decode(“gb2312”); const char *strResult = str.getString(); convert result is { cb f2 } But the correct result should be { d7 aa} What’s wrong? The platform is WinCE 6.0, use Chilkat_PPC_M5.lib Answer: The following code shows how to do it correctly: CkString str; str.setString(“16q”); // The following line […]
This example may help C++ programmers needing to scan email bodies for strings and automatically replace: void EmailBodyExample(void) { CkEmail email; // Set the plain-text and HTML alternative bodies. // Note: Because we’re using literal strings, the strings passed // to these methods are ANSI strings (i.e. they are 1-byte per char // in this case). email.AddPlainTextAlternativeBody(“á, é, í, ó, […]
C++ Libraries Removed internal calls to setlocale so that the locale is never changed from whatever your application may have set it to. Compression Fixed rare PPMD crash. DSA Fixed LoadText method in DSA ActiveX. FTP2 Two additional modes added to SyncLocalTree: mode 5 – Download only missing files or files with size differences. mode 6 – Same as mode […]
Question: Is it possible to delete email sitting on the POP3 server based on its age? For example, have it only delete mail from server older than 5 days. Answer: The POP3 protocol itself does not have the direct ability to delete email based on date/time (or any other selection criteria). The POP3 protocol only provides the ability to delete […]
Question: I would like to use your product to process mail on an MS Exchange server. Which product should I use; Chilkat MAIL or Chilkat IMAP? I saw in your examples that I can use both to connect to an Exchange server MAIL with Pop3 and IMAP for a direct login on the server but which one is the best […]
To append to an existing file using the Chilkat SFTP component / library, open the file for “writeOnly” and “openExisting”, then call any of the Write* methods (such as WriteFileText or WriteFileBytes), and then close the handle by calling CloseHandle. As always, if a method returns a failed status, check the contents of the LastErrorText property.
Question: I use SendMimeBytes Method of Mailman object to send Domain Keys Verified e-mails. But when I use this method I can’ t use BounceAddress property to set up bounce addresses. For this reason I can’t get bounced e-mails as I want. When I use SendMail Method everything is ok. What should I do to get bounce messages the address […]
A Chilkat method that returns an object must be checked for NULL ( also known as Nothing, nil, nada, etc. in other programming languages). A NULL return value indicates failure. In this case, check the contents of the object instance’s LastErrorText property. In Visual Basic 6.0, this is the error message you’d get when trying to dereference a NULL object […]