Question

我的客户端将图像文件发送到服务器。它工作5次然后突然停止。我很擅长使用溪流和管道，所以我不确定我做错了什么。

服务器代码

http.createServer(function(req, res) {

  console.log("File received");
  // This opens up the writeable stream to `output`
  var name = "./test"+i+".jpg";
  var writeStream = fs.createWriteStream(name);

  // This pipes the POST data to the file
  req.pipe(writeStream);

  req.on('end', function () {
  console.log("File saved");
  i++;
});

// This is here incase any errors occur
writeStream.on('error', function (err) {
   console.log(err);
 });
}).listen(3000);

客户端代码

var request = require('request');
var fs = require('fs');

setInterval(function () {
    var readStream  = fs.createReadStream('./test.jpg');
    readStream.on('open', function () {
    // This just pipes the read stream to the response object (which goes to the client)
    readStream.pipe(request.post('http://192.168.1.100:3000/test'));
    console.log("Send file to server");

  });


}, 1000);

Answer 1

表现得像资源耗尽问题。不确定哪些调用抛出错误，哪些只是返回。服务器是否在第6次呼叫时连接？写入流是否打开？管道是否打开？

保存图像后尝试结束连接并关闭管道。也许关闭写入流，不记得节点垃圾是否收集文件描述符。

Answer 2

我必须在服务器端执行以下操作才能完成这项工作：

res.statusCode = 200;
res.end();

节点管道停止工作

2 个答案: