Question

有没有办法在connect或express中设置模式或值模拟慢速文件上传??

Answer 1

首先，安装node-limiter然后创建一个Transform流，以阻止任何Stream：

var util = require('util');
var Transform = require('stream').Transform;
var TokenBucket = require('limiter').TokenBucket;

function BucketStream(rate, interval, parentBucket, options) {
    Transform.call(this, options);
    this.bucket = new TokenBucket(Number.POSITIVE_INFINITY, rate, interval, parentBucket);
}

util.inherits(BucketStream, Transform);

BucketStream.prototype._transform = function(chunk, encoding, callback) {
    this.bucket.removeTokens(chunk.length, function(err) {
        callback(err, chunk);
    });
};

然后请求是ReadableStream：

var bucketStream = new BucketStream(1024 * 500, 'second'); // 500KB/sec
req.pipe(bucketStream);

现在从bucketStream（而不是req）读取，您只需要500KB /秒

我做到了这一点，所以要小心：）

Expressjs / connect - 模拟慢速文件上传

1 个答案: