HP LoadRunner Protocol SDK
Header Files

The principal protocol header file is <LoadRunner installation>\include\<protocol ID>.h. This file has #include directives for other headers required for the protocol steps. There is also a <LoadRunner installation>\template\<protocol ID>\globals.h file, which has an #include directive for the <protocol ID>.h file and the lrun.h file. The lrun.h file declares the VuGen infrastructure functions, like the lr_start_transaction.