This documentation is for version v1.3.0 of NNG, but the latest released version is v1.7.2. see the documentation for v1.7.2 for the most up-to-date information.

SYNOPSIS

#include <nng/nng.h>

int nng_pipe_id(nng_pipe p);

DESCRIPTION

The nng_pipe_id() function returns a positive identifier for the pipe p, if it is valid. Otherwise it returns -1.

A pipe is considered valid if it was ever created by the socket. Pipes that are allocated on the stack or statically should be initialized with the macro NNG_PIPE_INITIALIZER to ensure that they cannot be confused with a valid pipe.

RETURN VALUES

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

ERRORS

None.

SEE ALSO