zmq_ctx_get(3) ============== NAME ---- zmq_ctx_get - get context options SYNOPSIS -------- *int zmq_ctx_get (void '*context', int 'option_name');* DESCRIPTION ----------- The _zmq_ctx_get()_ function shall return the option specified by the 'option_name' argument. The _zmq_ctx_get()_ function accepts the following option names: ZMQ_IO_THREADS: Get number of I/O threads ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The 'ZMQ_IO_THREADS' argument returns the size of the 0MQ thread pool for this context. ZMQ_MAX_SOCKETS: Get maximum number of sockets ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The 'ZMQ_MAX_SOCKETS' argument returns the maximum number of sockets allowed for this context. ZMQ_IPV6: Set IPv6 option ~~~~~~~~~~~~~~~~~~~~~~~~~ The 'ZMQ_IPV6' argument returns the IPv6 option for the context. RETURN VALUE ------------ The _zmq_ctx_get()_ function returns a value of 0 or greater if successful. Otherwise it returns `-1` and sets 'errno' to one of the values defined below. ERRORS ------ *EINVAL*:: The requested option _option_name_ is unknown. EXAMPLE ------- .Setting a limit on the number of sockets ---- void *context = zmq_ctx_new (); zmq_ctx_set (context, ZMQ_MAX_SOCKETS, 256); int max_sockets = zmq_ctx_get (context, ZMQ_MAX_SOCKETS); assert (max_sockets == 256); ---- SEE ALSO -------- linkzmq:zmq_ctx_set[3] linkzmq:zmq[7] AUTHORS ------- This page was written by the 0MQ community. To make a change please read the 0MQ Contribution Policy at .