SOLVED: 425 Unable to build data connection: Operation not permitted

This error message is specific to the ProFTPd server.  A Chilkat customer found this error within the LastErrorText after trying to upload or download a file, or retrieve a directory listing: 425 Unable to build data connection: Operation not permitted The latest ProFTPd server has a configuration setting that by …

Handling Accented Characters in Filenames w/ IIS 7.5 FTP

To handle accented characters in filenames correctly, the FTP client must know what character encoding is used to represent these characters (such as utf-8, iso-8859-1, etc.). The Ftp2.DirListingCharset property indicates the character encoding to be used when interpreting the bytes of a filename (in a directory listing). By default, it …

FTP2 ActiveX Events

The Chilkat FTP2 ActiveX provides the following event callbacks: ‘ IMPORTANT: For all callbacks, arguments named “skip” or “abort” are output-only arguments. ‘ These arguments may be set to 1 within the callback to either skip a ‘ particular file upload/download, or abort the entire operation. Dim WithEvents ftp As …

FTP Progress Monitoring

This post points to the various examples and blog posts scattered among the chilkatsoft.com, example-code.com, and cknotes.com involving progress monitoring of  FTP uploads and downloads using the Chilkat FTP2 ActiveX, .NET component, and C++ libs. Important for Monitoring Upload Progress: The SendBufferSize property is set to a large value (512K) …

FTP MLST command?

Question: A quickie question about the FTP2 control. I have some clients with strange FTP servers that return the directory listings in formats that no control seems to be able to handle (although I have not tried yours!). However, it is next to impossible to test, since I do not …

Determining FTP2 Connection Settings

There are many FTP2 component properties that affect how data connections are established between the FTP client (Chilkat FTP2) and the FTP server. Finding a workable combination of property settings for a given client/server situation can be difficult.  This blog post can hopefully provide some guidance. Before beginning, it is …