BigSpeed File Sharing Library includes two ActiveX
controls (client and server) that dramatically
simplify
and accelerate the development of private file sharing
solutions over the Internet.
In addition to standard FTP operations, such as
upload, download, rename, delete, etc.,
the library also offers a number of advanced features
which
give the local application full control over the
remote files.

The client is able to open seekable streams on the
server,
either in read-only or read-write access mode. The
application can
seek, read, an write bytes to the stream as it is a
local file.

The client is able to run search operation on the
server.
The searching criteria may include file name masks
(wildcards),
text strings inside the files, or both of them.
The found items are reported in real-time, while the
operation is running.

The server is able to perform remote file compression
and decompression by a request from
the client. During zipping or unzipping detailed
progress information is provided back to the client
about the current and total file and byte counts.

Data security is provided by transparent 128-bit AES
encryption with shared crypto keys,
without need of an SSL certificate. Building a virtual
private file sharing network is just a matter
of setting the same crypto key on client and server
side.
There is an option to compress on-the-fly the outgoing
data before encrypting, which may reduce greatly
the transfer time for large files.

BigSpeed File Sharing Library utilizes an elegant
event-driven paradigm for easy integration into
Windows applications.
A special attention is paid to provide responsive user
interface while maintaining maximum bandwidth
efficiency.
Carefully designed set of properties, methods, and
events offers great flexibility to develop
innovative communication software.

Sample applications are included in Visual Basic 6,
Visual Basic .NET, Visual C++ .NET, and Delphi 7.

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