+/*
+ Helper call for identifying a passed file descriptor. Returns 1 if the
+ file descriptor is an Internet socket of the specified type
+ (SOCK_DGRAM, SOCK_STREAM, ...), and if the address of the socket is
+ the same as the address specified by addr. The listening flag is used
+ the same way as in sd_is_socket(). Returns a negative errno style
+ error code on failure.
+
+ See sd_is_socket_sockaddr(3) for more information.
+*/
+int sd_is_socket_sockaddr(int fd, int type, const struct sockaddr* addr, unsigned addr_len, int listening);
+