:tocdepth: 3 base/frameworks/broker/main.zeek ================================ .. zeek:namespace:: Broker The Broker-based communication API and its various options. :Namespace: Broker :Imports: :doc:`base/bif/comm.bif.zeek `, :doc:`base/bif/messaging.bif.zeek ` Summary ~~~~~~~ Runtime Options ############### ================================================================================= ================================================================= :zeek:id:`Broker::peer_counts_as_iosource`: :zeek:type:`bool` :zeek:attr:`&redef` Whether calling :zeek:see:`Broker::peer` will register the Broker system as an I/O source that will block the process from shutting down. ================================================================================= ================================================================= Redefinable Options ################### ============================================================================================ ======================================================================= :zeek:id:`Broker::aggressive_interval`: :zeek:type:`count` :zeek:attr:`&redef` Frequency of work-stealing polling attempts for Broker/CAF threads in "aggressive" mode. :zeek:id:`Broker::aggressive_polls`: :zeek:type:`count` :zeek:attr:`&redef` Number of work-stealing polling attempts for Broker/CAF threads in "aggressive" mode. :zeek:id:`Broker::congestion_queue_size`: :zeek:type:`count` :zeek:attr:`&redef` The number of buffered messages at the Broker/CAF layer after which a subscriber considers themselves congested (i.e. :zeek:id:`Broker::default_connect_retry`: :zeek:type:`interval` :zeek:attr:`&redef` Default interval to retry connecting to a peer if it cannot be made to work initially, or if it ever becomes disconnected. :zeek:id:`Broker::default_listen_address`: :zeek:type:`string` :zeek:attr:`&redef` Default address on which to listen. :zeek:id:`Broker::default_listen_address_websocket`: :zeek:type:`string` :zeek:attr:`&redef` Default address on which to listen for WebSocket connections. :zeek:id:`Broker::default_listen_retry`: :zeek:type:`interval` :zeek:attr:`&redef` Default interval to retry listening on a port if it's currently in use already. :zeek:id:`Broker::default_log_topic_prefix`: :zeek:type:`string` :zeek:attr:`&redef` The default topic prefix where logs will be published. :zeek:id:`Broker::default_port`: :zeek:type:`port` :zeek:attr:`&redef` Default port for native Broker communication. :zeek:id:`Broker::default_port_websocket`: :zeek:type:`port` :zeek:attr:`&redef` Default port for Broker WebSocket communication. :zeek:id:`Broker::disable_ssl`: :zeek:type:`bool` :zeek:attr:`&redef` If true, do not use SSL for network connections. :zeek:id:`Broker::forward_messages`: :zeek:type:`bool` :zeek:attr:`&redef` Forward all received messages to subscribing peers. :zeek:id:`Broker::log_batch_interval`: :zeek:type:`interval` :zeek:attr:`&redef` Max time to buffer log messages before sending the current set out as a batch. :zeek:id:`Broker::log_batch_size`: :zeek:type:`count` :zeek:attr:`&redef` The max number of log entries per log stream to batch together when sending log messages to a remote logger. :zeek:id:`Broker::max_threads`: :zeek:type:`count` :zeek:attr:`&redef` Max number of threads to use for Broker/CAF functionality. :zeek:id:`Broker::moderate_interval`: :zeek:type:`count` :zeek:attr:`&redef` Frequency of work-stealing polling attempts for Broker/CAF threads in "moderate" mode. :zeek:id:`Broker::moderate_polls`: :zeek:type:`count` :zeek:attr:`&redef` Number of work-stealing polling attempts for Broker/CAF threads in "moderate" mode. :zeek:id:`Broker::moderate_sleep`: :zeek:type:`interval` :zeek:attr:`&redef` Interval of time for under-utilized Broker/CAF threads to sleep when in "moderate" mode. :zeek:id:`Broker::relaxed_interval`: :zeek:type:`count` :zeek:attr:`&redef` Frequency of work-stealing polling attempts for Broker/CAF threads in "relaxed" mode. :zeek:id:`Broker::relaxed_sleep`: :zeek:type:`interval` :zeek:attr:`&redef` Interval of time for under-utilized Broker/CAF threads to sleep when in "relaxed" mode. :zeek:id:`Broker::scheduler_policy`: :zeek:type:`string` :zeek:attr:`&redef` The CAF scheduling policy to use. :zeek:id:`Broker::ssl_cafile`: :zeek:type:`string` :zeek:attr:`&redef` Path to a file containing concatenated trusted certificates in PEM format. :zeek:id:`Broker::ssl_capath`: :zeek:type:`string` :zeek:attr:`&redef` Path to an OpenSSL-style directory of trusted certificates. :zeek:id:`Broker::ssl_certificate`: :zeek:type:`string` :zeek:attr:`&redef` Path to a file containing a X.509 certificate for this node in PEM format. :zeek:id:`Broker::ssl_keyfile`: :zeek:type:`string` :zeek:attr:`&redef` Path to the file containing the private key for this node's certificate. :zeek:id:`Broker::ssl_passphrase`: :zeek:type:`string` :zeek:attr:`&redef` Passphrase to decrypt the private key specified by :zeek:see:`Broker::ssl_keyfile`. ============================================================================================ ======================================================================= Types ##### ====================================================== ==================================================================== :zeek:type:`Broker::Data`: :zeek:type:`record` Opaque communication data. :zeek:type:`Broker::DataVector`: :zeek:type:`vector` Opaque communication data sequence. :zeek:type:`Broker::EndpointInfo`: :zeek:type:`record` :zeek:type:`Broker::ErrorCode`: :zeek:type:`enum` Enumerates the possible error types. :zeek:type:`Broker::Event`: :zeek:type:`record` Opaque event communication data. :zeek:type:`Broker::NetworkInfo`: :zeek:type:`record` :zeek:type:`Broker::PeerInfo`: :zeek:type:`record` :zeek:type:`Broker::PeerInfos`: :zeek:type:`vector` :zeek:type:`Broker::PeerStatus`: :zeek:type:`enum` The possible states of a peer endpoint. :zeek:type:`Broker::TableItem`: :zeek:type:`record` Opaque communication data used as a convenient way to wrap key-value pairs that comprise table entries. ====================================================== ==================================================================== Functions ######### ======================================================================= ======================================================================= :zeek:id:`Broker::auto_publish`: :zeek:type:`function` Automatically send an event to any interested peers whenever it is locally dispatched. :zeek:id:`Broker::auto_unpublish`: :zeek:type:`function` Stop automatically sending an event to peers upon local dispatch. :zeek:id:`Broker::default_log_topic`: :zeek:type:`function` The default implementation for :zeek:see:`Broker::log_topic`. :zeek:id:`Broker::flush_logs`: :zeek:type:`function` Sends all pending log messages to remote peers. :zeek:id:`Broker::forward`: :zeek:type:`function` Register a topic prefix subscription for events that should only be forwarded to any subscribing peers and not raise any event handlers on the receiving/forwarding node. :zeek:id:`Broker::listen`: :zeek:type:`function` Listen for remote connections using the native Broker protocol. :zeek:id:`Broker::listen_websocket`: :zeek:type:`function` Listen for remote connections using WebSocket. :zeek:id:`Broker::log_topic`: :zeek:type:`function` :zeek:attr:`&redef` A function that will be called for each log entry to determine what broker topic string will be used for sending it to peers. :zeek:id:`Broker::node_id`: :zeek:type:`function` Get a unique identifier for the local broker endpoint. :zeek:id:`Broker::peer`: :zeek:type:`function` Initiate a remote connection. :zeek:id:`Broker::peers`: :zeek:type:`function` Get a list of all peer connections. :zeek:id:`Broker::publish_id`: :zeek:type:`function` Publishes the value of an identifier to a given topic. :zeek:id:`Broker::subscribe`: :zeek:type:`function` Register interest in all peer event messages that use a certain topic prefix. :zeek:id:`Broker::unpeer`: :zeek:type:`function` Remove a remote connection. :zeek:id:`Broker::unsubscribe`: :zeek:type:`function` Unregister interest in all peer event messages that use a topic prefix. ======================================================================= ======================================================================= Detailed Interface ~~~~~~~~~~~~~~~~~~ Runtime Options ############### .. zeek:id:: Broker::peer_counts_as_iosource :source-code: base/frameworks/broker/main.zeek 136 136 :Type: :zeek:type:`bool` :Attributes: :zeek:attr:`&redef` :Default: ``T`` Whether calling :zeek:see:`Broker::peer` will register the Broker system as an I/O source that will block the process from shutting down. For example, set this to false when you are reading pcaps, but also want to initiate a Broker peering and still shutdown after done reading the pcap. Redefinable Options ################### .. zeek:id:: Broker::aggressive_interval :source-code: base/frameworks/broker/main.zeek 118 118 :Type: :zeek:type:`count` :Attributes: :zeek:attr:`&redef` :Default: ``4`` Frequency of work-stealing polling attempts for Broker/CAF threads in "aggressive" mode. Only used for the "stealing" scheduler policy. .. zeek:id:: Broker::aggressive_polls :source-code: base/frameworks/broker/main.zeek 110 110 :Type: :zeek:type:`count` :Attributes: :zeek:attr:`&redef` :Default: ``5`` Number of work-stealing polling attempts for Broker/CAF threads in "aggressive" mode. Only used for the "stealing" scheduler policy. .. zeek:id:: Broker::congestion_queue_size :source-code: base/frameworks/broker/main.zeek 75 75 :Type: :zeek:type:`count` :Attributes: :zeek:attr:`&redef` :Default: ``200`` The number of buffered messages at the Broker/CAF layer after which a subscriber considers themselves congested (i.e. tune the congestion control mechanisms). .. zeek:id:: Broker::default_connect_retry :source-code: base/frameworks/broker/main.zeek 39 39 :Type: :zeek:type:`interval` :Attributes: :zeek:attr:`&redef` :Default: ``30.0 secs`` Default interval to retry connecting to a peer if it cannot be made to work initially, or if it ever becomes disconnected. Use of the ZEEK_DEFAULT_CONNECT_RETRY environment variable (set as number of seconds) will override this option and also any values given to :zeek:see:`Broker::peer`. .. zeek:id:: Broker::default_listen_address :source-code: base/frameworks/broker/main.zeek 27 27 :Type: :zeek:type:`string` :Attributes: :zeek:attr:`&redef` :Default: ``""`` :Redefinition: from :doc:`/scripts/policy/frameworks/management/agent/boot.zeek` ``=``:: 127.0.0.1 Default address on which to listen. .. zeek:see:: Broker::listen .. zeek:id:: Broker::default_listen_address_websocket :source-code: base/frameworks/broker/main.zeek 32 32 :Type: :zeek:type:`string` :Attributes: :zeek:attr:`&redef` :Default: ``""`` Default address on which to listen for WebSocket connections. .. zeek:see:: Broker::listen_websocket .. zeek:id:: Broker::default_listen_retry :source-code: base/frameworks/broker/main.zeek 22 22 :Type: :zeek:type:`interval` :Attributes: :zeek:attr:`&redef` :Default: ``30.0 secs`` Default interval to retry listening on a port if it's currently in use already. Use of the ZEEK_DEFAULT_LISTEN_RETRY environment variable (set as a number of seconds) will override this option and also any values given to :zeek:see:`Broker::listen`. .. zeek:id:: Broker::default_log_topic_prefix :source-code: base/frameworks/broker/main.zeek 140 140 :Type: :zeek:type:`string` :Attributes: :zeek:attr:`&redef` :Default: ``"zeek/logs/"`` The default topic prefix where logs will be published. The log's stream id is appended when writing to a particular stream. .. zeek:id:: Broker::default_port :source-code: base/frameworks/broker/main.zeek 8 8 :Type: :zeek:type:`port` :Attributes: :zeek:attr:`&redef` :Default: ``9999/tcp`` Default port for native Broker communication. Where not specified otherwise, this is the port to connect to and listen on. .. zeek:id:: Broker::default_port_websocket :source-code: base/frameworks/broker/main.zeek 16 16 :Type: :zeek:type:`port` :Attributes: :zeek:attr:`&redef` :Default: ``9997/tcp`` Default port for Broker WebSocket communication. Where not specified otherwise, this is the port to connect to and listen on for WebSocket connections. See the Broker documentation for a specification of the message format over WebSocket connections. .. zeek:id:: Broker::disable_ssl :source-code: base/frameworks/broker/main.zeek 45 45 :Type: :zeek:type:`bool` :Attributes: :zeek:attr:`&redef` :Default: ``F`` If true, do not use SSL for network connections. By default, SSL will even be used if no certificates / CAs have been configured. In that case (which is the default) the communication will be encrypted, but not authenticated. .. zeek:id:: Broker::forward_messages :source-code: base/frameworks/broker/main.zeek 129 129 :Type: :zeek:type:`bool` :Attributes: :zeek:attr:`&redef` :Default: ``F`` Forward all received messages to subscribing peers. .. zeek:id:: Broker::log_batch_interval :source-code: base/frameworks/broker/main.zeek 83 83 :Type: :zeek:type:`interval` :Attributes: :zeek:attr:`&redef` :Default: ``1.0 sec`` Max time to buffer log messages before sending the current set out as a batch. .. zeek:id:: Broker::log_batch_size :source-code: base/frameworks/broker/main.zeek 79 79 :Type: :zeek:type:`count` :Attributes: :zeek:attr:`&redef` :Default: ``400`` The max number of log entries per log stream to batch together when sending log messages to a remote logger. .. zeek:id:: Broker::max_threads :source-code: base/frameworks/broker/main.zeek 87 87 :Type: :zeek:type:`count` :Attributes: :zeek:attr:`&redef` :Default: ``1`` Max number of threads to use for Broker/CAF functionality. The ZEEK_BROKER_MAX_THREADS environment variable overrides this setting. .. zeek:id:: Broker::moderate_interval :source-code: base/frameworks/broker/main.zeek 122 122 :Type: :zeek:type:`count` :Attributes: :zeek:attr:`&redef` :Default: ``2`` Frequency of work-stealing polling attempts for Broker/CAF threads in "moderate" mode. Only used for the "stealing" scheduler policy. .. zeek:id:: Broker::moderate_polls :source-code: base/frameworks/broker/main.zeek 114 114 :Type: :zeek:type:`count` :Attributes: :zeek:attr:`&redef` :Default: ``5`` Number of work-stealing polling attempts for Broker/CAF threads in "moderate" mode. Only used for the "stealing" scheduler policy. .. zeek:id:: Broker::moderate_sleep :source-code: base/frameworks/broker/main.zeek 102 102 :Type: :zeek:type:`interval` :Attributes: :zeek:attr:`&redef` :Default: ``16.0 msecs`` Interval of time for under-utilized Broker/CAF threads to sleep when in "moderate" mode. Only used for the "stealing" scheduler policy. .. zeek:id:: Broker::relaxed_interval :source-code: base/frameworks/broker/main.zeek 126 126 :Type: :zeek:type:`count` :Attributes: :zeek:attr:`&redef` :Default: ``1`` Frequency of work-stealing polling attempts for Broker/CAF threads in "relaxed" mode. Only used for the "stealing" scheduler policy. .. zeek:id:: Broker::relaxed_sleep :source-code: base/frameworks/broker/main.zeek 106 106 :Type: :zeek:type:`interval` :Attributes: :zeek:attr:`&redef` :Default: ``64.0 msecs`` Interval of time for under-utilized Broker/CAF threads to sleep when in "relaxed" mode. Only used for the "stealing" scheduler policy. .. zeek:id:: Broker::scheduler_policy :source-code: base/frameworks/broker/main.zeek 98 98 :Type: :zeek:type:`string` :Attributes: :zeek:attr:`&redef` :Default: ``"sharing"`` The CAF scheduling policy to use. Available options are "sharing" and "stealing". The "sharing" policy uses a single, global work queue along with mutex and condition variable used for accessing it, which may be better for cases that don't require much concurrency or need lower power consumption. The "stealing" policy uses multiple work queues protected by spinlocks, which may be better for use-cases that have more concurrency needs. E.g. may be worth testing the "stealing" policy along with dedicating more threads if a lot of data store processing is required. .. zeek:id:: Broker::ssl_cafile :source-code: base/frameworks/broker/main.zeek 50 50 :Type: :zeek:type:`string` :Attributes: :zeek:attr:`&redef` :Default: ``""`` Path to a file containing concatenated trusted certificates in PEM format. If set, Zeek will require valid certificates for all peers. .. zeek:id:: Broker::ssl_capath :source-code: base/frameworks/broker/main.zeek 55 55 :Type: :zeek:type:`string` :Attributes: :zeek:attr:`&redef` :Default: ``""`` Path to an OpenSSL-style directory of trusted certificates. If set, Zeek will require valid certificates for all peers. .. zeek:id:: Broker::ssl_certificate :source-code: base/frameworks/broker/main.zeek 60 60 :Type: :zeek:type:`string` :Attributes: :zeek:attr:`&redef` :Default: ``""`` Path to a file containing a X.509 certificate for this node in PEM format. If set, Zeek will require valid certificates for all peers. .. zeek:id:: Broker::ssl_keyfile :source-code: base/frameworks/broker/main.zeek 70 70 :Type: :zeek:type:`string` :Attributes: :zeek:attr:`&redef` :Default: ``""`` Path to the file containing the private key for this node's certificate. If set, Zeek will require valid certificates for all peers. .. zeek:id:: Broker::ssl_passphrase :source-code: base/frameworks/broker/main.zeek 65 65 :Type: :zeek:type:`string` :Attributes: :zeek:attr:`&redef` :Default: ``""`` Passphrase to decrypt the private key specified by :zeek:see:`Broker::ssl_keyfile`. If set, Zeek will require valid certificates for all peers. Types ##### .. zeek:type:: Broker::Data :source-code: base/frameworks/broker/main.zeek 232 234 :Type: :zeek:type:`record` data: :zeek:type:`opaque` of Broker::Data :zeek:attr:`&optional` Opaque communication data. .. zeek:type:: Broker::DataVector :source-code: base/frameworks/broker/main.zeek 237 237 :Type: :zeek:type:`vector` of :zeek:type:`Broker::Data` Opaque communication data sequence. .. zeek:type:: Broker::EndpointInfo :source-code: base/frameworks/broker/main.zeek 217 222 :Type: :zeek:type:`record` id: :zeek:type:`string` A unique identifier of the node. network: :zeek:type:`Broker::NetworkInfo` :zeek:attr:`&optional` Network-level information. .. zeek:type:: Broker::ErrorCode :source-code: base/frameworks/broker/main.zeek 161 161 :Type: :zeek:type:`enum` .. zeek:enum:: Broker::NO_ERROR Broker::ErrorCode (present if :doc:`/scripts/base/bif/comm.bif.zeek` is loaded) .. zeek:enum:: Broker::UNSPECIFIED Broker::ErrorCode The unspecified default error code. .. zeek:enum:: Broker::PEER_INCOMPATIBLE Broker::ErrorCode Version incompatibility. .. zeek:enum:: Broker::PEER_INVALID Broker::ErrorCode Referenced peer does not exist. .. zeek:enum:: Broker::PEER_UNAVAILABLE Broker::ErrorCode Remote peer not listening. .. zeek:enum:: Broker::PEER_DISCONNECT_DURING_HANDSHAKE Broker::ErrorCode Remote peer disconnected during the handshake. .. zeek:enum:: Broker::PEER_TIMEOUT Broker::ErrorCode A peering request timed out. .. zeek:enum:: Broker::MASTER_EXISTS Broker::ErrorCode Master with given name already exists. .. zeek:enum:: Broker::NO_SUCH_MASTER Broker::ErrorCode Master with given name does not exist. .. zeek:enum:: Broker::NO_SUCH_KEY Broker::ErrorCode The given data store key does not exist. .. zeek:enum:: Broker::REQUEST_TIMEOUT Broker::ErrorCode The store operation timed out. .. zeek:enum:: Broker::TYPE_CLASH Broker::ErrorCode The operation expected a different type than provided. .. zeek:enum:: Broker::INVALID_DATA Broker::ErrorCode The data value cannot be used to carry out the desired operation. .. zeek:enum:: Broker::BACKEND_FAILURE Broker::ErrorCode The storage backend failed to execute the operation. .. zeek:enum:: Broker::STALE_DATA Broker::ErrorCode The storage backend failed to execute the operation. .. zeek:enum:: Broker::CANNOT_OPEN_FILE Broker::ErrorCode (present if :doc:`/scripts/base/bif/comm.bif.zeek` is loaded) .. zeek:enum:: Broker::CANNOT_WRITE_FILE Broker::ErrorCode (present if :doc:`/scripts/base/bif/comm.bif.zeek` is loaded) .. zeek:enum:: Broker::INVALID_TOPIC_KEY Broker::ErrorCode (present if :doc:`/scripts/base/bif/comm.bif.zeek` is loaded) .. zeek:enum:: Broker::END_OF_FILE Broker::ErrorCode (present if :doc:`/scripts/base/bif/comm.bif.zeek` is loaded) .. zeek:enum:: Broker::INVALID_TAG Broker::ErrorCode (present if :doc:`/scripts/base/bif/comm.bif.zeek` is loaded) .. zeek:enum:: Broker::INVALID_STATUS Broker::ErrorCode (present if :doc:`/scripts/base/bif/comm.bif.zeek` is loaded) .. zeek:enum:: Broker::CAF_ERROR Broker::ErrorCode Catch-all for a CAF-level problem. Enumerates the possible error types. .. zeek:type:: Broker::Event :source-code: base/frameworks/broker/main.zeek 240 245 :Type: :zeek:type:`record` name: :zeek:type:`string` :zeek:attr:`&optional` The name of the event. Not set if invalid event or arguments. args: :zeek:type:`Broker::DataVector` The arguments to the event. Opaque event communication data. .. zeek:type:: Broker::NetworkInfo :source-code: base/frameworks/broker/main.zeek 210 215 :Type: :zeek:type:`record` address: :zeek:type:`string` :zeek:attr:`&log` The IP address or hostname where the endpoint listens. bound_port: :zeek:type:`port` :zeek:attr:`&log` The port where the endpoint is bound to. .. zeek:type:: Broker::PeerInfo :source-code: base/frameworks/broker/main.zeek 224 227 :Type: :zeek:type:`record` peer: :zeek:type:`Broker::EndpointInfo` status: :zeek:type:`Broker::PeerStatus` .. zeek:type:: Broker::PeerInfos :source-code: base/frameworks/broker/main.zeek 229 229 :Type: :zeek:type:`vector` of :zeek:type:`Broker::PeerInfo` .. zeek:type:: Broker::PeerStatus :source-code: base/frameworks/broker/main.zeek 195 195 :Type: :zeek:type:`enum` .. zeek:enum:: Broker::INITIALIZING Broker::PeerStatus The peering process is initiated. .. zeek:enum:: Broker::CONNECTING Broker::PeerStatus Connection establishment in process. .. zeek:enum:: Broker::CONNECTED Broker::PeerStatus Connection established, peering pending. .. zeek:enum:: Broker::PEERED Broker::PeerStatus Successfully peered. .. zeek:enum:: Broker::DISCONNECTED Broker::PeerStatus Connection to remote peer lost. .. zeek:enum:: Broker::RECONNECTING Broker::PeerStatus Reconnecting to peer after a lost connection. The possible states of a peer endpoint. .. zeek:type:: Broker::TableItem :source-code: base/frameworks/broker/main.zeek 249 252 :Type: :zeek:type:`record` key: :zeek:type:`Broker::Data` val: :zeek:type:`Broker::Data` Opaque communication data used as a convenient way to wrap key-value pairs that comprise table entries. Functions ######### .. zeek:id:: Broker::auto_publish :source-code: base/frameworks/broker/main.zeek 520 523 :Type: :zeek:type:`function` (topic: :zeek:type:`string`, ev: :zeek:type:`any`) : :zeek:type:`bool` Automatically send an event to any interested peers whenever it is locally dispatched. (For example, using "event my_event(...);" in a script.) :param topic: a topic string associated with the event message. Peers advertise interest by registering a subscription to some prefix of this topic name. :param ev: a Zeek event value. :returns: true if automatic event sending is now enabled. .. zeek:id:: Broker::auto_unpublish :source-code: base/frameworks/broker/main.zeek 525 528 :Type: :zeek:type:`function` (topic: :zeek:type:`string`, ev: :zeek:type:`any`) : :zeek:type:`bool` Stop automatically sending an event to peers upon local dispatch. :param topic: a topic originally given to :zeek:see:`Broker::auto_publish`. :param ev: an event originally given to :zeek:see:`Broker::auto_publish`. :returns: true if automatic events will not occur for the topic/event pair. .. zeek:id:: Broker::default_log_topic :source-code: base/frameworks/broker/main.zeek 143 146 :Type: :zeek:type:`function` (id: :zeek:type:`Log::ID`, path: :zeek:type:`string`) : :zeek:type:`string` The default implementation for :zeek:see:`Broker::log_topic`. .. zeek:id:: Broker::flush_logs :source-code: base/frameworks/broker/main.zeek 495 498 :Type: :zeek:type:`function` () : :zeek:type:`count` Sends all pending log messages to remote peers. This normally doesn't need to be used except for test cases that are time-sensitive. .. zeek:id:: Broker::forward :source-code: base/frameworks/broker/main.zeek 510 513 :Type: :zeek:type:`function` (topic_prefix: :zeek:type:`string`) : :zeek:type:`bool` Register a topic prefix subscription for events that should only be forwarded to any subscribing peers and not raise any event handlers on the receiving/forwarding node. i.e. it's the same as :zeek:see:`Broker::subscribe` except matching events are not raised on the receiver, just forwarded. Use :zeek:see:`Broker::unsubscribe` with the same argument to undo this operation. :param topic_prefix: a prefix to match against remote message topics. e.g. an empty prefix matches everything and "a" matches "alice" and "amy" but not "bob". :returns: true if a new event forwarding/subscription is now registered. .. zeek:id:: Broker::listen :source-code: base/frameworks/broker/main.zeek 434 450 :Type: :zeek:type:`function` (a: :zeek:type:`string` :zeek:attr:`&default` = :zeek:see:`Broker::default_listen_address` :zeek:attr:`&optional`, p: :zeek:type:`port` :zeek:attr:`&default` = :zeek:see:`Broker::default_port` :zeek:attr:`&optional`, retry: :zeek:type:`interval` :zeek:attr:`&default` = :zeek:see:`Broker::default_listen_retry` :zeek:attr:`&optional`) : :zeek:type:`port` Listen for remote connections using the native Broker protocol. :param a: an address string on which to accept connections, e.g. "127.0.0.1". An empty string refers to INADDR_ANY. :param p: the TCP port to listen on. The value 0 means that the OS should choose the next available free port. :param retry: If non-zero, retries listening in regular intervals if the port cannot be acquired immediately. 0 disables retries. If the ZEEK_DEFAULT_LISTEN_RETRY environment variable is set (as number of seconds), it overrides any value given here. :returns: the bound port or 0/? on failure. .. zeek:see:: Broker::status .. zeek:id:: Broker::listen_websocket :source-code: base/frameworks/broker/main.zeek 457 473 :Type: :zeek:type:`function` (a: :zeek:type:`string` :zeek:attr:`&default` = :zeek:see:`Broker::default_listen_address_websocket` :zeek:attr:`&optional`, p: :zeek:type:`port` :zeek:attr:`&default` = :zeek:see:`Broker::default_port_websocket` :zeek:attr:`&optional`, retry: :zeek:type:`interval` :zeek:attr:`&default` = :zeek:see:`Broker::default_listen_retry` :zeek:attr:`&optional`) : :zeek:type:`port` Listen for remote connections using WebSocket. :param a: an address string on which to accept connections, e.g. "127.0.0.1". An empty string refers to INADDR_ANY. :param p: the TCP port to listen on. The value 0 means that the OS should choose the next available free port. :param retry: If non-zero, retries listening in regular intervals if the port cannot be acquired immediately. 0 disables retries. If the ZEEK_DEFAULT_LISTEN_RETRY environment variable is set (as number of seconds), it overrides any value given here. :returns: the bound port or 0/? on failure. .. zeek:see:: Broker::status .. zeek:id:: Broker::log_topic :source-code: base/frameworks/broker/main.zeek 143 146 :Type: :zeek:type:`function` (id: :zeek:type:`Log::ID`, path: :zeek:type:`string`) : :zeek:type:`string` :Attributes: :zeek:attr:`&redef` A function that will be called for each log entry to determine what broker topic string will be used for sending it to peers. The default implementation will return a value based on :zeek:see:`Broker::default_log_topic_prefix`. :param id: the ID associated with the log stream entry that will be sent. :param path: the path to which the log stream entry will be output. :returns: a string representing the broker topic to which the log will be sent. .. zeek:id:: Broker::node_id :source-code: base/frameworks/broker/main.zeek 490 493 :Type: :zeek:type:`function` () : :zeek:type:`string` Get a unique identifier for the local broker endpoint. :returns: a unique identifier for the local broker endpoint. .. zeek:id:: Broker::peer :source-code: base/frameworks/broker/main.zeek 475 478 :Type: :zeek:type:`function` (a: :zeek:type:`string`, p: :zeek:type:`port` :zeek:attr:`&default` = :zeek:see:`Broker::default_port` :zeek:attr:`&optional`, retry: :zeek:type:`interval` :zeek:attr:`&default` = :zeek:see:`Broker::default_connect_retry` :zeek:attr:`&optional`) : :zeek:type:`bool` Initiate a remote connection. :param a: an address to connect to, e.g. "localhost" or "127.0.0.1". :param p: the TCP port on which the remote side is listening. :param retry: an interval at which to retry establishing the connection with the remote peer if it cannot be made initially, or if it ever becomes disconnected. If the ZEEK_DEFAULT_CONNECT_RETRY environment variable is set (as number of seconds), it overrides any value given here. :returns: true if it's possible to try connecting with the peer and it's a new peer. The actual connection may not be established until a later point in time. .. zeek:see:: Broker::status .. zeek:id:: Broker::peers :source-code: base/frameworks/broker/main.zeek 485 488 :Type: :zeek:type:`function` () : :zeek:type:`vector` of :zeek:type:`Broker::PeerInfo` Get a list of all peer connections. :returns: a list of all peer connections. .. zeek:id:: Broker::publish_id :source-code: base/frameworks/broker/main.zeek 500 503 :Type: :zeek:type:`function` (topic: :zeek:type:`string`, id: :zeek:type:`string`) : :zeek:type:`bool` Publishes the value of an identifier to a given topic. The subscribers will update their local value for that identifier on receipt. :param topic: a topic associated with the message. :param id: the identifier to publish. :returns: true if the message is sent. .. zeek:id:: Broker::subscribe :source-code: base/frameworks/broker/main.zeek 505 508 :Type: :zeek:type:`function` (topic_prefix: :zeek:type:`string`) : :zeek:type:`bool` Register interest in all peer event messages that use a certain topic prefix. Note that subscriptions may not be altered immediately after calling (except during :zeek:see:`zeek_init`). :param topic_prefix: a prefix to match against remote message topics. e.g. an empty prefix matches everything and "a" matches "alice" and "amy" but not "bob". :returns: true if it's a new event subscription and it is now registered. .. zeek:id:: Broker::unpeer :source-code: base/frameworks/broker/main.zeek 480 483 :Type: :zeek:type:`function` (a: :zeek:type:`string`, p: :zeek:type:`port`) : :zeek:type:`bool` Remove a remote connection. Note that this does not terminate the connection to the peer, it just means that we won't exchange any further information with it unless peering resumes later. :param a: the address used in previous successful call to :zeek:see:`Broker::peer`. :param p: the port used in previous successful call to :zeek:see:`Broker::peer`. :returns: true if the arguments match a previously successful call to :zeek:see:`Broker::peer`. :param TODO: We do not have a function yet to terminate a connection. .. zeek:id:: Broker::unsubscribe :source-code: base/frameworks/broker/main.zeek 515 518 :Type: :zeek:type:`function` (topic_prefix: :zeek:type:`string`) : :zeek:type:`bool` Unregister interest in all peer event messages that use a topic prefix. Note that subscriptions may not be altered immediately after calling (except during :zeek:see:`zeek_init`). :param topic_prefix: a prefix previously supplied to a successful call to :zeek:see:`Broker::subscribe` or :zeek:see:`Broker::forward`. :returns: true if interest in the topic prefix is no longer advertised.