# nng_rep_open ## NAME nng_rep_open --- create _REP_ socket ## SYNOPSIS ```c #include #include int nng_rep0_open(nng_socket *s); int nng_rep0_open_raw(nng_socket *); ``` ## DESCRIPTION The `nng_rep0_open()` function creates a [{{i:*REP*}}][rep] version 0 [socket][socket] and returns it at the location pointed to by _s_. The `nng_rep0_open_raw()` function creates a _REP_ version 0 socket in [raw mode][raw] and returns it at the location pointed to by _s_. ## RETURN VALUES These functions return 0 on success, and non-zero otherwise. ## ERRORS * `NNG_ENOMEM`: Insufficient memory is available. * `NNG_ENOTSUP`: The protocol is not supported. ## SEE ALSO [Sockets][socket], [_REP_ Protocol][rep], [_REQ_ Protocol][req] {{#include ../refs.md}}