nodejs跨站请求 返回错误：{ [Error: socket hang up] code: 'ECONNRESET' }

需要向其它服务器get和post数据，类似以这样的方式：

var req = require('request');
var qs  = require('querystring');
var data = {
    key1 : value1,
    key2 : value2,
};
var url = "http://other-domain.com/part";
req.get( url + "?" + qs.stringify( data ), {}, function( err, res, body ){
    console.log( err );
});
req.post( url, data, function( err, res, body ){
    console.log( err );
});

但每次都返回错误：{ [Error: socket hang up] code: 'ECONNRESET' } 求大神搭救！