XmlRpc++ is a C++ library for developing XML-RPC clients and servers that is quick, straightforward, and usable across several platforms.
One of the most significant advantages of using XmlRpc++ is the fact that it's effortless to incorporate into C++ applications. It doesn't require any other libraries aside from your system's socket libraries. Additionally, simple XML parsing and HTTP support are built-in, which makes things even more convenient.
XmlRpc++ is also faster than many alternative options. All I/O is non-blocking. That means that slow clients or networks won't slow down the server. This advantage makes it an excellent option for high-traffic applications that require fast, reliable performance.
Aside from being easy and fast, XmlRpc++ is also a portable option. This library is written in standard C++ to the POSIX and Windows socket APIs. However, you will need a relatively recent compiler (g++ 3.1 or MSVC++ .Net or MSVC++ 6 with the STL patches.).
Finally, this library is free and released under the GNU LGPL license. This license makes it easy to use this library for commercial or non-commercial purposes.
In terms of recent updates, XmlRpc++ has made some excellent improvements. Handling of fault responses has been better, support for the introspection API (partial) has been added, and support for system.multicall is now available. Additionally, a problem in the XmlRpcServer destructor has been fixed, and the server now ensures a valid result value is always returned. Documentation of the API is available on the home page, making it easier than ever to get started with this powerful library.