Get socket option `heartbeat_ivl`. Available from libzmq 4.2.0. Set socket option `heartbeat_ivl`. Available from libzmq 4.2.0. Get socket option `heartbeat_ttl`. Available from libzmq 4.2.0. Set socket option `heartbeat_ttl`. Available from libzmq 4.2.0. Get socket option `heartbeat_timeout`. Available from libzmq 4.2.0. Set socket option `heartbeat_timeout`. Available from libzmq 4.2.0. Get socket option `use_fd`. Available from libzmq 4.2.0. Set socket option `use_fd`. Available from libzmq 4.2.0. Set socket option `xpub_manual`. Available from libzmq 4.2.0. Set socket option `xpub_welcome_msg`. Available from libzmq 4.2.0. Set socket option `stream_notify`. Available from libzmq 4.2.0. Get socket option `invert_matching`. Available from libzmq 4.2.0. Set socket option `invert_matching`. Available from libzmq 4.2.0. Set socket option `xpub_verboser`. Available from libzmq 4.2.0. Get socket option `connect_timeout`. Available from libzmq 4.2.0. Set socket option `connect_timeout`. Available from libzmq 4.2.0. Get socket option `tcp_maxrt`. Available from libzmq 4.2.0. Set socket option `tcp_maxrt`. Available from libzmq 4.2.0. Get socket option `thread_safe`. Available from libzmq 4.2.0. Get socket option `multicast_maxtpdu`. Available from libzmq 4.2.0. Set socket option `multicast_maxtpdu`. Available from libzmq 4.2.0. Get socket option `vmci_buffer_size`. Available from libzmq 4.2.0. Set socket option `vmci_buffer_size`. Available from libzmq 4.2.0. Get socket option `vmci_buffer_min_size`. Available from libzmq 4.2.0. Set socket option `vmci_buffer_min_size`. Available from libzmq 4.2.0. Get socket option `vmci_buffer_max_size`. Available from libzmq 4.2.0. Set socket option `vmci_buffer_max_size`. Available from libzmq 4.2.0. Get socket option `vmci_connect_timeout`. Available from libzmq 4.2.0. Set socket option `vmci_connect_timeout`. Available from libzmq 4.2.0. Get socket option `tos`. Available from libzmq 4.1.0. Set socket option `tos`. Available from libzmq 4.1.0. Set socket option `router_handover`. Available from libzmq 4.1.0. Set socket option `connect_rid`. Available from libzmq 4.1.0. Set socket option `connect_rid` from 32-octet binary Available from libzmq 4.1.0. Get socket option `handshake_ivl`. Available from libzmq 4.1.0. Set socket option `handshake_ivl`. Available from libzmq 4.1.0. Get socket option `socks_proxy`. Available from libzmq 4.1.0. Set socket option `socks_proxy`. Available from libzmq 4.1.0. Set socket option `xpub_nodrop`. Available from libzmq 4.1.0. Set socket option `router_mandatory`. Available from libzmq 4.0.0. Set socket option `probe_router`. Available from libzmq 4.0.0. Set socket option `req_relaxed`. Available from libzmq 4.0.0. Set socket option `req_correlate`. Available from libzmq 4.0.0. Set socket option `conflate`. Available from libzmq 4.0.0. Get socket option `zap_domain`. Available from libzmq 4.0.0. Set socket option `zap_domain`. Available from libzmq 4.0.0. Get socket option `mechanism`. Available from libzmq 4.0.0. Get socket option `plain_server`. Available from libzmq 4.0.0. Set socket option `plain_server`. Available from libzmq 4.0.0. Get socket option `plain_username`. Available from libzmq 4.0.0. Set socket option `plain_username`. Available from libzmq 4.0.0. Get socket option `plain_password`. Available from libzmq 4.0.0. Set socket option `plain_password`. Available from libzmq 4.0.0. Get socket option `curve_server`. Available from libzmq 4.0.0. Set socket option `curve_server`. Available from libzmq 4.0.0. Get socket option `curve_publickey`. Available from libzmq 4.0.0. Set socket option `curve_publickey`. Available from libzmq 4.0.0. Set socket option `curve_publickey` from 32-octet binary Available from libzmq 4.0.0. Get socket option `curve_secretkey`. Available from libzmq 4.0.0. Set socket option `curve_secretkey`. Available from libzmq 4.0.0. Set socket option `curve_secretkey` from 32-octet binary Available from libzmq 4.0.0. Get socket option `curve_serverkey`. Available from libzmq 4.0.0. Set socket option `curve_serverkey`. Available from libzmq 4.0.0. Set socket option `curve_serverkey` from 32-octet binary Available from libzmq 4.0.0. Get socket option `gssapi_server`. Available from libzmq 4.0.0. Set socket option `gssapi_server`. Available from libzmq 4.0.0. Get socket option `gssapi_plaintext`. Available from libzmq 4.0.0. Set socket option `gssapi_plaintext`. Available from libzmq 4.0.0. Get socket option `gssapi_principal`. Available from libzmq 4.0.0. Set socket option `gssapi_principal`. Available from libzmq 4.0.0. Get socket option `gssapi_service_principal`. Available from libzmq 4.0.0. Set socket option `gssapi_service_principal`. Available from libzmq 4.0.0. Get socket option `ipv6`. Available from libzmq 4.0.0. Set socket option `ipv6`. Available from libzmq 4.0.0. Get socket option `immediate`. Available from libzmq 4.0.0. Set socket option `immediate`. Available from libzmq 4.0.0. Get socket option `type`. Available from libzmq 3.0.0. Get socket option `sndhwm`. Available from libzmq 3.0.0. Set socket option `sndhwm`. Available from libzmq 3.0.0. Get socket option `rcvhwm`. Available from libzmq 3.0.0. Set socket option `rcvhwm`. Available from libzmq 3.0.0. Get socket option `affinity`. Available from libzmq 3.0.0. Set socket option `affinity`. Available from libzmq 3.0.0. Set socket option `subscribe`. Available from libzmq 3.0.0. Set socket option `unsubscribe`. Available from libzmq 3.0.0. Get socket option `identity`. Available from libzmq 3.0.0. Set socket option `identity`. Available from libzmq 3.0.0. Get socket option `rate`. Available from libzmq 3.0.0. Set socket option `rate`. Available from libzmq 3.0.0. Get socket option `recovery_ivl`. Available from libzmq 3.0.0. Set socket option `recovery_ivl`. Available from libzmq 3.0.0. Get socket option `sndbuf`. Available from libzmq 3.0.0. Set socket option `sndbuf`. Available from libzmq 3.0.0. Get socket option `rcvbuf`. Available from libzmq 3.0.0. Set socket option `rcvbuf`. Available from libzmq 3.0.0. Get socket option `linger`. Available from libzmq 3.0.0. Set socket option `linger`. Available from libzmq 3.0.0. Get socket option `reconnect_ivl`. Available from libzmq 3.0.0. Set socket option `reconnect_ivl`. Available from libzmq 3.0.0. Get socket option `reconnect_ivl_max`. Available from libzmq 3.0.0. Set socket option `reconnect_ivl_max`. Available from libzmq 3.0.0. Get socket option `backlog`. Available from libzmq 3.0.0. Set socket option `backlog`. Available from libzmq 3.0.0. Get socket option `maxmsgsize`. Available from libzmq 3.0.0. Set socket option `maxmsgsize`. Available from libzmq 3.0.0. Get socket option `multicast_hops`. Available from libzmq 3.0.0. Set socket option `multicast_hops`. Available from libzmq 3.0.0. Get socket option `rcvtimeo`. Available from libzmq 3.0.0. Set socket option `rcvtimeo`. Available from libzmq 3.0.0. Get socket option `sndtimeo`. Available from libzmq 3.0.0. Set socket option `sndtimeo`. Available from libzmq 3.0.0. Set socket option `xpub_verbose`. Available from libzmq 3.0.0. Get socket option `tcp_keepalive`. Available from libzmq 3.0.0. Set socket option `tcp_keepalive`. Available from libzmq 3.0.0. Get socket option `tcp_keepalive_idle`. Available from libzmq 3.0.0. Set socket option `tcp_keepalive_idle`. Available from libzmq 3.0.0. Get socket option `tcp_keepalive_cnt`. Available from libzmq 3.0.0. Set socket option `tcp_keepalive_cnt`. Available from libzmq 3.0.0. Get socket option `tcp_keepalive_intvl`. Available from libzmq 3.0.0. Set socket option `tcp_keepalive_intvl`. Available from libzmq 3.0.0. Get socket option `tcp_accept_filter`. Available from libzmq 3.0.0. Set socket option `tcp_accept_filter`. Available from libzmq 3.0.0. Get socket option `rcvmore`. Available from libzmq 3.0.0. Get socket option `fd`. Available from libzmq 3.0.0. Get socket option `events`. Available from libzmq 3.0.0. Get socket option `last_endpoint`. Available from libzmq 3.0.0. Set socket option `router_raw`. Available from libzmq 3.0.0. Get socket option `ipv4only`. Available from libzmq 3.0.0. Set socket option `ipv4only`. Available from libzmq 3.0.0. Set socket option `delay_attach_on_connect`. Available from libzmq 3.0.0.