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80 lines
2.2 KiB
JavaScript
80 lines
2.2 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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/*
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* var socket = TextSecureWebSocket(url);
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*
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* Returns an adamantium-reinforced super socket, capable of sending
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* app-level keep alives and automatically reconnecting.
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*
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*/
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TextSecureWebSocket = function (url) {
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'use strict';
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var reconnectSemaphore = 0;
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var reconnectTimeout = 1000;
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var socket;
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var calledClose = false;
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var socketWrapper = {
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onmessage : function() {},
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onclose : function() {},
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onerror : function() {},
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getStatus : function() { return socket.readyState; },
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close : function() { calledClose = true; socket.close(); }
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};
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var error;
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function onclose(e) {
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if (!error && !calledClose) {
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reconnectSemaphore--;
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setTimeout(connect, reconnectTimeout);
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}
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if (e !== 1000 ) { // CLOSE_NORMAL
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console.log('websocket closed', e.code);
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}
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socketWrapper.onclose(e);
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};
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function onerror(e) {
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error = e;
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console.log('websocket error');
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socketWrapper.onerror(e);
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};
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function onmessage(response) {
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socketWrapper.onmessage(response);
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};
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function send(msg) {
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socket.send(msg);
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};
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function connect() {
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if (++reconnectSemaphore <= 0) { return; }
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if (socket) { socket.close(); }
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socket = new WebSocket(url);
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socket.onerror = onerror
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socket.onclose = onclose;
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socket.onmessage = onmessage;
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socketWrapper.send = send;
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};
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connect();
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return socketWrapper;
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};
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