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test_dgram_multicast_membership.js
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test_dgram_multicast_membership.js
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/* Copyright 2016-present Samsung Electronics Co., Ltd. and other contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var assert = require('assert');
var dgram = require('dgram');
var MODE = process.argv[2] || 'echo';
var SERVER = 'server';
var CLIENT = 'client';
var ECHO = 'echo';
if (MODE !== 'server' && MODE !== 'client' && MODE !== 'echo') {
console.log(
'usage: iotjs test_dgram_multicast_membership.js server|client|echo');
assert(false);
}
var port = 41239;
var multicast_address = '230.255.255.250';
var interval = 1000;
var msg = 'Hello IoT.js';
if (MODE !== CLIENT) { // for server and echo
var recv_count = 0;
var server = dgram.createSocket('udp4');
server.on('message', function(data, rinfo) {
console.log('server got data : ' + data);
recv_count++;
if (recv_count == 1) {
server.dropMembership(multicast_address);
}
});
server.bind(port, function() {
server.addMembership(multicast_address);
});
server.on('error', function(err) {
assert.fail();
server.close();
});
setTimeout(function() {
server.close();
}, 5000);
}
if (MODE !== SERVER) { // for client and echo
var send_count = 0;
var client = dgram.createSocket('udp4');
var timer = setInterval(function () {
send_count++;
console.log('client send data : ' + msg);
client.send(msg, port, multicast_address);
if (send_count == 3) {
clearInterval(timer);
}
}, interval);
setTimeout(function() {
client.close();
}, 5000);
}
process.on('exit', function(code) {
assert.equal(code, 0);
if (MODE !== CLIENT) {
assert.equal(recv_count, 1);
}
if (MODE !== SERVER) {
assert.equal(send_count, 3);
}
});