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Question

问题是我找不到如何停止刷新文件数据。我尝试了unpipe()方法。从curl请求文件然后关闭它似乎工作。但它在关闭浏览器时不会停止刷新文件。并读取整个文件。我怎么能阻止它？

var http = require("http"),
fs = require("fs"),
url = require("url");

var stream;

var requestHandlers = {

    video: function(request, response) {
        var totalbytes = 0;
        response.writeHead(200, {"Content-Type": "video/mp4"});

        stream = fs.createReadStream('video.mp4');
        stream.pipe(response);
        stream.on('data', function(chunk) {
            totalbytes += chunk.length;
        });

        stream.on('end', function(){
            console.log("Video connection ended. Total bytes sent %d", totalbytes);
        });

        stream.on('close', function(){
            console.log("Video connection closed. Total bytes sent %d", totalbytes);
        });

    }
}

var handle = {
    "/video.mp4": requestHandlers.video
};

var myServer = http.createServer(function (request, response) {

    var pathname = url.parse(request.url).pathname;
    console.log("Request for " + pathname + " received from " + request.connection.remoteAddress);

    if (typeof handle[pathname] === 'function') {
        handle[pathname](request, response);
    } else {
        response.writeHead(404, {"Content-Type": "text/html"});
        response.write("404 Not found");
        response.end();
    }

    request.on('close', function(){
//      stream.unpipe();    //does not help
        console.log("Connection closed");
    });
});

myServer.listen(5555);
console.log("Server started");