0
下面是一個簡單的TCP-Server壓力測試。只要我們每個客戶端只發送一條消息,一切都按預期工作。但是,當每個客戶端發送兩條消息時,服務器突然停止,沒有異常或錯誤。 那麼這是一個錯誤還是一個特性?Node.js無法處理多個tcp郵件
var net = require("net");
var async = require("async");
var cluster = require("cluster");
// `ulimit -n` tells us that we can open max. 1024 files per process.
// Creating a socket means opening a file so we are limited.
var CLIENTS = 1000;
// Here is the weird part:
// - sending one message per client works fine
// - sending multiple message per client sucks
var MESSAGES = 2;
var TOTAL = CLIENTS * MESSAGES;
var PORT = 1234;
var HOST = "127.0.0.1";
if (cluster.isMaster) {
var count = 0;
var start = new Date;
var server = net.createServer(function(socket) {
socket.on("data", function(data) {
var t;
count++;
console.log("server received " + count + " messages");
socket.write(data, function(err) { if (err) console.error(err); });
if (count === TOTAL) {
t = (new Date) - start;
console.log("server received and sent " + count + " messages within " + t + "ms");
}
});
});
server.listen(PORT, HOST, function() { cluster.fork(); });
} else {
var run = function(i) {
var c = net.connect({ port: PORT, host: HOST }, function() {
var tasks = (function() {
var results = [];
for (var x = 1; x <= MESSAGES; ++x) {
results.push((function(x) {
return function(next) { c.write("Hello server!", next); };
})(x));
}
return results;
})();
async.series(tasks, function(err) {
if (err) { console.error(err); }
});
});
};
for (var i = 1; i <= CLIENTS; ++i) { run(i); }
}
測試在Linux 3.11,Node.js的0.10.21
我該如何確保郵件已發送? – flosse
好吧,我的錯:一切正常,我只是忘了定義分隔符來識別消息結束/開始。 – flosse