librsync3

Synopsys

#include <stdio.h>

#include <stdlib.h>

#include <librsync.h>

cc ... -lrsync

Overview

The librsync library implements network delta-compression of streams and files. The algorithm is similar to that used in the rsync(1) and xdelta(2) programs, but specialized for transfer of arbitrary-length octet streams. Unlike most diff programs, librsync does not require access to both of the files on the same machine, but rather only a short ``signature'' of the old file and the complete contents of the new file.

The canonical use of librsync is in the rproxy(8) reference implementation of the rsync proposed extension to HTTP. It may be useful to other programs which wish to do delta-compression in HTTP, or within their own protocol. There are HTTP-specific utility functions within librsync, but they need not be used.

A number of tools such as rdiff(1) provide command-line and scriptable access to rsync functions.