nng_pipe_id(3)

NAME

nng_pipe_id - return numeric pipe identifier

#include <nng/nng.h>

int nng_pipe_id(nng_pipe p);

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

Note	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.

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

None.