Created
December 7, 2015 17:23
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/* | |
Send 1 byte | |
to IP:[PORT_START - 65535] | |
over UDP | |
using <SOCKETS_COUNT> sockets (!!!) | |
<PORT_STEP> packets each <DELAY> milliseconds | |
starting from port <PORT_START> | |
*/ | |
var PORT_STEP = 300; | |
var PORT_START = 50000; | |
var DELAY = 100; | |
var SOCKETS_COUNT = 100; | |
var L = console.log.bind(console); | |
var argv = process.argv; | |
if(argv.length != 3) { | |
L("USAGE example: node udp_stress.js 11.22.33.44"); | |
process.exit(); | |
} | |
var IP = argv[2]; | |
var dgram = require("dgram"); | |
var socks = new Array(SOCKETS_COUNT); | |
//init sockets | |
for(var i=0;i<SOCKETS_COUNT;i++) { | |
socks[i] = dgram.createSocket("udp4"); | |
} | |
var msgbuf_len = 1; | |
var msgbuf = new Buffer(msgbuf_len); | |
function udp_send(_port) { | |
for(var i=0;i<SOCKETS_COUNT;i++) { | |
socks[i].send(msgbuf,0,msgbuf_len,_port,IP); | |
} | |
} | |
var send_count = 0; | |
L("IP: ",IP); | |
L("Perf:",PORT_STEP,"packets each",DELAY,'ms.'); | |
var cur = 0; | |
function loop_send() { | |
L("Sending",PORT_STEP,'packets.(', cur+PORT_START,'-',cur+PORT_START+PORT_STEP,')'); | |
for(var i=0;i<PORT_STEP;i++) { | |
var port = cur+PORT_START+i; | |
if(port > 65535){ | |
return; | |
} | |
udp_send(port); | |
} | |
cur += PORT_STEP; | |
setTimeout(loop_send,DELAY); | |
} | |
loop_send(); |
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