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This documentation is for version v1.1.0 of nng, but the latest released version is v1.3.2. see the documentation for v1.3.2 for the most up-to-date information.


#include <nng/nng.h>

int nng_ctx_close(nng_ctx ctx);


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 and the setting of the NNG_OPT_LINGER option.

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.

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


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



The context ctx is already closed or was never opened.

NNG Reference Manual vv1.1.0 © 2019 Staysail Systems, Inc, © 2018 Capitar IT Group BV
This document is supplied under the MIT License.
nanomsg™ and nng™ are trademarks of Garrett D'Amore.