nng_ctx_id
return numeric context identifier
- Provided by: libnng-dev (Version: 1.10.1-2)
- Source: nng
- Report a bug
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.
Note
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.