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This documentation is for version v1.2.2 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.
nng_ctx_id(3)

SYNOPSIS

#include <nng/nng.h>

int nng_ctx_id(nng_ctx c);

DESCRIPTION

The nng_ctx_id() function returns a positive identifier for the context c, if it is valid. Otherwise it returns -1.

A context is considered valid if it was ever opened with nng_ctx_open() function. Contexts that are allocated on the stack or statically should be initialized with the macro NNG_CTX_INITIALIZER to ensure that they cannot be confused with a valid context before they are opened.

RETURN VALUES

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

ERRORS

None.

SEE ALSO

NNG Reference Manual vv1.2.2 © 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.