October 6, 1987 GETRPCPORT 3

### NAME

getrpcport - get RPC port number

### LIBRARY

Standard C Library (libc, -lc)

### SYNOPSIS

```int` getrpcport(```char *host``, int prognum``, int versnum``, int proto`)

### DESCRIPTION

getrpcport(``) returns the port number for version ```versnum` of the RPC program ```prognum` running on ```host` and using protocol ```proto`. It returns 0 if it cannot contact the portmapper, or if ```prognum` is not registered. If ```prognum` is registered but not with version ```versnum`, it will still return a port number (for some version of the program) indicating that the program is indeed registered. The version mismatch will be detected upon the first call to the service.