#include <nng/nng.h> int nng_ctx_close(nng_ctx ctx);
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
Threads waiting for operations on the context when this
call is executed may also return with an
Closing the socket associated with ctx
This function returns 0 on success, and non-zero otherwise.
The context ctx is already closed or was never opened.