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# nng_bus_open
## NAME
nng_bus_open --- create _BUS_ socket
## SYNOPSIS
```c
#include <nng/nng.h>
#include <nng/protocol/bus0/bus.h>
int nng_bus0_open(nng_socket *s);
int nng_bus0_open_raw(nng_socket *s);
```
## DESCRIPTION
The `nng_bus0_open()` function creates a [{{i:*BUS*}}][bus] version 0
[socket][socket] and returns it at the location pointed to by _s_.
The `nng_bus0_open_raw()` function creates a _BUS_ 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
[_BUS_ protocol][bus],
[RAW mode][raw]
{{#include ../refs.md}}
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