maqu14
89 lines
2.3 KiB
JavaScript
89 lines
2.3 KiB
JavaScript
var zmq = require('..')
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, should = require('should')
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, semver = require('semver');
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describe('socket.xpub-xsub', function () {
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it('should support pub-sub tracing and filtering', function (done) {
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if (!semver.gte(zmq.version, '3.1.0')) {
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done();
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return console.warn('Test requires libzmq >= 3.1.0');
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}
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var n = 0;
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var m = 0;
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var pub = zmq.socket('pub');
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var sub = zmq.socket('sub');
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var xpub = zmq.socket('xpub');
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var xsub = zmq.socket('xsub');
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pub.bindSync('tcp://*:5556');
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xsub.connect('tcp://127.0.0.1:5556');
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xpub.bindSync('tcp://*:5555');
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sub.connect('tcp://127.0.0.1:5555');
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xsub.on('message', function (msg) {
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xpub.send(msg); // Forward message using the xpub so subscribers can receive it
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});
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xpub.on('message', function (msg) {
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msg.should.be.an.instanceof(Buffer);
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var type = msg[0] === 0 ? 'unsubscribe' : 'subscribe';
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var channel = msg.slice(1).toString();
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switch (type) {
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case 'subscribe':
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switch (m++) {
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case 0:
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channel.should.equal('js');
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break;
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case 1:
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channel.should.equal('luna');
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break;
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}
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break;
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case 'unsubscribe':
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switch (m++) {
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case 2:
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channel.should.equal('luna');
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sub.close();
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pub.close();
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xsub.close();
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xpub.close();
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done();
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break;
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}
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break;
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}
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xsub.send(msg); // Forward message using the xsub so the publisher knows it has a subscriber
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});
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sub.on('message', function (msg) {
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msg.should.be.an.instanceof(Buffer);
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switch (n++) {
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case 0:
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msg.toString().should.equal('js is cool');
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break;
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case 1:
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msg.toString().should.equal('luna is cool too');
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break;
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}
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});
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sub.subscribe('js');
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sub.subscribe('luna');
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setTimeout(function () {
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pub.send('js is cool');
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pub.send('ruby is meh');
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pub.send('py is pretty cool');
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pub.send('luna is cool too');
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}, 100.0);
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setTimeout(function () {
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sub.unsubscribe('luna');
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}, 300);
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});
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});
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