---
name: "nng_dialer_id"
section: "3"
platform: "linux"
package: "libnng-dev"
version: "1.10.1-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/nng_dialer_id"
---

# nng\_dialer\_id(3)

return numeric dialer identifier

## NAME

nng\_dialer\_id - return numeric dialer identifier

## SYNOPSIS

```
#include <nng/nng.h>
int nng_dialer_id(nng_dialer d);
```

## DESCRIPTION

The `nng_dialer_id()` function returns a positive identifier for the dialer *d*, if it is valid. Otherwise it returns `-1`.

**Note**\

A dialer is considered valid if it was ever created with the `nng_dialer_create()` or `nng_dial()` functions. Dialers that are allocated on the stack or statically should be initialized with the macro `NNG_DIALER_INITIALIZER` to ensure that they cannot be confused with a valid dialer before they are created properly.

## RETURN VALUES

This function returns the positive value for the dialer identifier, or `-1` if the dialer is invalid.

## ERRORS

None.

## SEE ALSO

[nng\_dialer(5)](/nng_dialer/5.md), [nng(7)](/nng/7.md)