James Coglan
51 lines
1.3 KiB
JavaScript
51 lines
1.3 KiB
JavaScript
'use strict';
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var Buffer = require('safe-buffer').Buffer;
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var common = {
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VALID_PARAMS: [
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'server_no_context_takeover',
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'client_no_context_takeover',
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'server_max_window_bits',
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'client_max_window_bits'
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],
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MIN_WINDOW_BITS: 9,
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MAX_WINDOW_BITS: 15,
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VALID_WINDOW_BITS: [8, 9, 10, 11, 12, 13, 14, 15],
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fetch: function(options, key, _default) {
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if (options.hasOwnProperty(key))
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return options[key];
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else
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return _default;
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},
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validateOptions: function(options, validKeys) {
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for (var key in options) {
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if (validKeys.indexOf(key) < 0)
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throw new Error('Unrecognized option: ' + key);
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}
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},
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validParams: function(params) {
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var keys = Object.keys(params), i = keys.length;
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while (i--) {
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if (this.VALID_PARAMS.indexOf(keys[i]) < 0) return false;
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if (params[keys[i]] instanceof Array) return false;
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}
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if (params.hasOwnProperty('server_no_context_takeover')) {
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if (params.server_no_context_takeover !== true) return false;
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}
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if (params.hasOwnProperty('client_no_context_takeover')) {
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if (params.client_no_context_takeover !== true) return false;
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}
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if (params.hasOwnProperty('server_max_window_bits')) {
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if (this.VALID_WINDOW_BITS.indexOf(params.server_max_window_bits) < 0) return false;
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}
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return true;
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}
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};
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module.exports = common;
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