| ZMQ_HAS(3) | 0MQ Manual | ZMQ_HAS(3) |
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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| 10/26/2026 | 0MQ 4.3.5 |