ZMQ_HAS

Section: 0MQ Manual (3)
Updated: 01/30/2021
Page Index

NAME

zmq_has - check a ZMQ capability

SYNOPSIS

int zmq_has (const char *capability);

DESCRIPTION

The zmq_has() function shall report whether a specified capability is available in the library. This allows bindings and applications to probe a library directly, for transport and security options.

Capabilities shall be lowercase strings. The following capabilities are defined:

: • ipc - the library supports the ipc:// protocol

: • pgm - the library supports the pgm:// protocol

: • tipc - the library supports the tipc:// protocol

: • norm - the library supports the norm:// protocol

: • curve - the library supports the CURVE security mechanism

: • gssapi - the library supports the GSSAPI security mechanism

: • draft - the library is built with the draft api

When this method is provided, the zmq.h header file will define ZMQ_HAS_CAPABILITIES.

RETURN VALUE

The zmq_has() function shall return 1 if the specified capability is provided. Otherwise it shall return 0.

AUTHORS

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