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

# nng\_ctx\_close(3)

close context

## NAME

nng\_ctx\_close - close context

## SYNOPSIS

```
#include <nng/nng.h>
int nng_ctx_close(nng_ctx ctx);
```

## DESCRIPTION

The `nng_ctx_close()` function closes the context *ctx*. Messages that have been submitted for sending may be flushed or delivered, depending upon the transport.

Further attempts to use the context after this call returns will result in `NNG_ECLOSED`. Threads waiting for operations on the context when this call is executed may also return with an `NNG_ECLOSED` result.

**Note**\

Closing the socket associated with *ctx* (using `nng_close()`) also closes this context.

## RETURN VALUES

This function returns 0 on success, and non-zero otherwise.

## ERRORS

`NNG_ECLOSED`

The context *ctx* is already closed or was never opened.

## SEE ALSO

[nng\_ctx\_open(3)](/nng_ctx_open/3.md), [nng\_strerror(3)](/nng_strerror/3.md), [nng\_ctx(5)](/nng_ctx/5.md), [nng(7)](/nng/7.md)