42 lines
1.1 KiB
JavaScript
42 lines
1.1 KiB
JavaScript
'use strict';
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var Message = require('../message');
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var inherits = require('util').inherits;
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var bitcore = require('bitcore-lib');
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var utils = require('../utils');
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var $ = bitcore.util.preconditions;
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var _ = bitcore.deps._;
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var BufferUtil = bitcore.util.buffer;
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var BufferReader = bitcore.encoding.BufferReader;
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/**
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* A message to confirm that a connection is still valid.
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* @param {Number} arg - A nonce for the Ping message
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* @param {Object=} options
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* @extends Message
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* @constructor
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*/
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function PingMessage(arg, options) {
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Message.call(this, options);
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this.command = 'ping';
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$.checkArgument(
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_.isUndefined(arg) || (BufferUtil.isBuffer(arg) && arg.length === 8),
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'First argument is expected to be an 8 byte buffer'
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);
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this.nonce = arg || utils.getNonce();
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}
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inherits(PingMessage, Message);
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PingMessage.prototype.setPayload = function(payload) {
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var parser = new BufferReader(payload);
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this.nonce = parser.read(8);
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utils.checkFinished(parser);
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};
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PingMessage.prototype.getPayload = function() {
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return this.nonce;
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};
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module.exports = PingMessage;
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