HsVoipSDK is an audio streaming / voice over IP SDK in C / C++. HsVoipSDK is shipped with full C source code and includes the Audio library, RTP protocol library and Socket interface library for Windows. HsVoipSDK is designed for use from C/C++ applications on Windows platforms. HsVoipSDK is Royalty Free. HsVoipSDK source code can be used to develop Voice over IP audio streaming or voice chat applications in C / C++.