dab49aef39
- remove build and update bitcoind - remove outdated error documentation - update bus docs
31 lines
766 B
Markdown
31 lines
766 B
Markdown
# Bus
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The bus provides a way to subscribe to events from any of the services running. It's implemented abstract from transport specific implementation. The primary use of the bus in Bitcore Node is for subscribing to events via a web socket.
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## Opening/Closing
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```javascript
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// a node is needed to be able to open a bus
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var node = new Node(configuration);
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// will create a new bus that is ready to subscribe to events
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var bus = node.openBus();
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// will remove all event listeners
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bus.close();
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```
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## Subscribing/Unsubscribing
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```javascript
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// subscribe to all transaction events
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bus.subscribe('bitcoind/rawtransaction');
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// to subscribe to new block hashes
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bus.subscribe('bitcoind/hashblock');
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// unsubscribe
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bus.unsubscribe('bitcoind/rawtransaction');
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```
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