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53 lines
1.8 KiB
JavaScript
53 lines
1.8 KiB
JavaScript
/* vim: ts=4:sw=4:expandtab
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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function KeepAlive(websocketResource, opts) {
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if (websocketResource instanceof WebSocketResource) {
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opts = opts || {};
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this.disconnect = opts.disconnect;
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if (this.disconnect === undefined) {
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this.disconnect = true;
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}
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this.wsr = websocketResource;
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this.reset();
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} else {
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throw new TypeError('KeepAlive expected a WebSocketResource');
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}
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}
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KeepAlive.prototype = {
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constructor: KeepAlive,
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reset: function() {
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clearTimeout(this.keepAliveTimer);
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clearTimeout(this.disconnectTimer);
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this.keepAliveTimer = setTimeout(function() {
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this.wsr.sendRequest({
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verb: 'GET',
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path: '/v1/keepalive',
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success: this.reset.bind(this)
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});
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if (this.disconnect) {
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// automatically disconnect if server doesn't ack
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this.disconnectTimer = setTimeout(function() {
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this.wsr.close(3001, 'No response to keepalive request');
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}.bind(this), 1000);
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} else {
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this.reset();
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}
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}.bind(this), 55000);
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},
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};
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