76 lines
No EOL
2.5 KiB
JavaScript
76 lines
No EOL
2.5 KiB
JavaScript
var express = require('express');
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var peerRouter = express.Router();
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let PROJECT_KEY_LENGTH = parseInt(process.env.PROJECT_KEY_LENGTH) || 20;
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let debug = process.env.debug === "1" || false;
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const extractPeerId = (peerId) => {
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let splited = peerId.split("-");
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if (splited.length !== 2) {
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debug && console.error(`cannot split peerId: ${peerId}`);
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return {};
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}
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if (PROJECT_KEY_LENGTH > 0 && splited[0].length !== PROJECT_KEY_LENGTH) {
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debug && console.error(`wrong project key length for peerId: ${peerId}`);
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return {};
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}
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return {projectKey: splited[0], sessionId: splited[1]};
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};
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const connectedPeers = {};
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const peerConnection = (client) => {
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debug && console.log(`initiating ${client.id}`);
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const {projectKey, sessionId} = extractPeerId(client.id);
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if (projectKey === undefined || sessionId === undefined) {
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return;
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}
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connectedPeers[projectKey] = connectedPeers[projectKey] || [];
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if (connectedPeers[projectKey].indexOf(sessionId) === -1) {
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debug && console.log(`new connexion ${client.id}`);
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connectedPeers[projectKey].push(sessionId);
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} else {
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debug && console.log(`reconnecting peer ${client.id}`);
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}
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};
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const peerDisconnect = (client) => {
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debug && console.log(`disconnect ${client.id}`);
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const {projectKey, sessionId} = extractPeerId(client.id);
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if (projectKey === undefined || sessionId === undefined) {
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return;
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}
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const i = (connectedPeers[projectKey] || []).indexOf(sessionId);
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if (i === -1) {
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debug && console.log(`session not found ${client.id}`);
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} else {
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connectedPeers[projectKey].splice(i, 1);
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}
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}
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const peerError = (error) => {
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console.error('error fired');
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console.error(error);
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}
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peerRouter.get(`/${process.env.S3_KEY}/peers`, function (req, res) {
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debug && console.log("looking for all available sessions");
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res.statusCode = 200;
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res.setHeader('Content-Type', 'application/json');
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res.end(JSON.stringify({"data": connectedPeers}));
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});
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peerRouter.get(`/${process.env.S3_KEY}/peers/:projectKey`, function (req, res) {
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debug && console.log(`looking for available sessions for ${req.params.projectKey}`);
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res.statusCode = 200;
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res.setHeader('Content-Type', 'application/json');
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res.end(JSON.stringify({"data": connectedPeers[req.params.projectKey] || []}));
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});
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module.exports = {
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peerRouter,
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peerConnection,
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peerDisconnect,
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peerError,
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extractPeerId
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}; |