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ZMQ_HAS(3) 0MQ Manual ZMQ_HAS(3)


zmq_has - check a ZMQ capability


int zmq_has (const char *capability);


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.


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


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10/09/2023 0MQ 4.3.5