A library for interacting with BitMEX's websocket API. 

strml

bitmexthomasb

bitmexyshing

bitmex-realtime-api

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const EventEmitter = require('eventemitter2').EventEmitter2;

const debug = require('debug')('BitMEX:realtime-api');

const createSocket = require('./lib/createSocket');

const deltaParser = require('./lib/deltaParser');

const getStreams = require('./lib/getStreams');

  production: 'wss://www.bitmex.com/realtime',

  testnet: 'wss://testnet.bitmex.com/realtime'

const noSymbolTables = BitMEXClient.noSymbolTables = [

  // We inherit from EventEmitter2, which supports wildcards.

  this._data = {}; // internal data store keyed by [tableName][symbol]. Used by deltaParser.

  this._keys = {}; // keys store - populated by images on connect

  this._maxTableLen = typeof options.maxTableLen === 'number' ? options.maxTableLen : DEFAULT_MAX_TABLE_LEN;

    options.endpoint = options.testnet ? endpoints.testnet : endpoints.production;

  if (process.env.BITMEX_ENDPOINT) options.endpoint = process.env.BITMEX_ENDPOINT;

  this.socket = createSocket(options, emitter);

  // Get valid streams so we can validate our subscriptions.

  getStreams(options.endpoint, function(err, streams) {

util.inherits(BitMEXClient, EventEmitter);

 * Simple data getter. Clones data on the way out so it can be safely modified.

 * @param  {String} [symbol]    Symbol of data to retrieve.

 * @param  {String} [tableName] Table / stream name.

 * @return {Object}             All current data. If no tableName is provided, will return an object keyed by

 *                              the table name.

BitMEXClient.prototype.getData = function(symbol, tableName) {

  const tableUsesSymbol = noSymbolTables.indexOf(tableName) === -1;

    out = this._data[tableName][symbol] || [];

  // Since we're keying by [table][symbol], we have to search deep

    out = Object.keys(this._data).reduce((memo, tableKey) => {

      memo[tableKey] = this._data[tableKey][symbol] || [];

    throw new Error('Pass a symbol, tableName, or both to getData([symbol], [tableName]) - but one must be provided.');

        const newData = deltaParser.onAction(action, table, symbol, client, data);

        // Truncate table to protect from unbounded memory growth

        // Shift oldest elements out of the table (FIFO queue) to prevent unbounded memory growth

        if (newData.length > client._maxTableLen) {

          newData.length = client._maxTableLen;

          newData.splice(0, newData.length - client._maxTableLen);

        callback(newData, symbol, table);

    // If this is the first sub, subscribe to bitmex adapter.

    if (client.subscriptionCount(table, symbol) === 1) {

      const openSubscription = () => client.sendSubscribeRequest(table, symbol);

      // If we reconnect, will need to reopen.

      client.on('open', openSubscription);

      // If we're already opened, prime the pump (I made that up)

      if (client.socket.opened) openSubscription();

  return JSON.parse(JSON.stringify(data));

  "description": "A library for interacting with BitMEX's websocket API.",

  "repository": "https://github.com/BitMEX/api-connectors.git",

    "test": "echo \"Error: no test specified\" && exit 1"

  "author": "Samuel Reed <samuel.trace.reed@gmail.com> (http://strml.net/)",

		{
		"name": "bitmex-realtime-api",
		"version": "0.2.4",
		"version": "0.2.5",
		"description": "A library for interacting with BitMEX's websocket API.",
		@@ -5,0 +5,0 @@ "main": "index.js",

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		@@ -215,5 +215,5 @@ 'use strict';
		const newData = deltaParser.onAction(action, table, symbol, client, data);
		// Truncate table to protect from unbounded memory growth
		// Shift oldest elements out of the table (FIFO queue) to prevent unbounded memory growth
		if (newData.length > client._maxTableLen) {
		newData.length = client._maxTableLen;
		newData.splice(0, newData.length - client._maxTableLen);
		}
		@@ -220,0 +220,0 @@ callback(newData, symbol, table);