net.socket.setTimeout無法與async.eachOfSeries

Question

我有這個問題，如果我不能連接到主機，Nodejs攤位。奇怪的部分是，當它是一個數組並且端口是靜態的時，我使用async.eachSeries工作。有誰知道爲什麼？

client = new net.Socket; 
hosts = {'google.com': '443', 'yahoo.com': '80','msn.com': '444'}; 

client.setTimeout(1000, function() { 
    console.log("Timeout has occurred") 
}); 

async.eachOfSeries(hosts, function(port,host,callback) { 
    client.connect(port, host, function() { 
     console.log('Connected to ' + host + " on port " + port); 
     client.destroy(); 
     callback(); 
    }); 
}); 

client.on('timeout', function() { 
    console.log('client has timed out'); 
    client.destroy(); // kill client after server's response 
}); 

謝謝

約翰

Answer 1

msn.com端口444連接失敗，最後「回調」（成功連接後）從未called-這就是爲什麼節點攤位。

檢查解決此問題的下面的代碼（注意msn調用現在是第一個，並且只是超時 - 我覺得它更適合低估流量）。

var async = require('async'); 
var net = require('net'); 

hosts = { 'msn.com': '444', 'google.com': '443', 'yahoo.com': '80' }; 

async.eachOfSeries(hosts, function (port, host, callback) { 
    client = new net.Socket; 

    client.setTimeout(1000, function() { 
     console.log("Timeout has occurred") 
    }); 

    client.connect(port, host, function() { 
     console.log('Connected to ' + host + " on port " + port); 
     client.destroy(); 
     callback(); 
    }).on('timeout', function() { 
     console.log('client has timed out'); 
     client.destroy(); 
     callback(); 
    }); 
});