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- # http-timer
- > Timings for HTTP requests
-
- [![Build Status](https://travis-ci.org/szmarczak/http-timer.svg?branch=master)](https://travis-ci.org/szmarczak/http-timer)
- [![Coverage Status](https://coveralls.io/repos/github/szmarczak/http-timer/badge.svg?branch=master)](https://coveralls.io/github/szmarczak/http-timer?branch=master)
- [![install size](https://packagephobia.now.sh/badge?p=@szmarczak/http-timer)](https://packagephobia.now.sh/result?p=@szmarczak/http-timer)
-
- Inspired by the [`request` package](https://github.com/request/request).
-
- ## Usage
- ```js
- 'use strict';
- const https = require('https');
- const timer = require('@szmarczak/http-timer');
-
- const request = https.get('https://httpbin.org/anything');
- const timings = timer(request);
-
- request.on('response', response => {
- response.on('data', () => {}); // Consume the data somehow
- response.on('end', () => {
- console.log(timings);
- });
- });
-
- // { start: 1535708511443,
- // socket: 1535708511444,
- // lookup: 1535708511444,
- // connect: 1535708511582,
- // upload: 1535708511887,
- // response: 1535708512037,
- // end: 1535708512040,
- // phases:
- // { wait: 1,
- // dns: 0,
- // tcp: 138,
- // request: 305,
- // firstByte: 150,
- // download: 3,
- // total: 597 } }
- ```
-
- ## API
-
- ### timer(request)
-
- Returns: `Object`
-
- - `start` - Time when the request started.
- - `socket` - Time when a socket was assigned to the request.
- - `lookup` - Time when the DNS lookup finished.
- - `connect` - Time when the socket successfully connected.
- - `upload` - Time when the request finished uploading.
- - `response` - Time when the request fired the `response` event.
- - `end` - Time when the response fired the `end` event.
- - `error` - Time when the request fired the `error` event.
- - `phases`
- - `wait` - `timings.socket - timings.start`
- - `dns` - `timings.lookup - timings.socket`
- - `tcp` - `timings.connect - timings.lookup`
- - `request` - `timings.upload - timings.connect`
- - `firstByte` - `timings.response - timings.upload`
- - `download` - `timings.end - timings.response`
- - `total` - `timings.end - timings.start` or `timings.error - timings.start`
-
- **Note**: The time is a `number` representing the milliseconds elapsed since the UNIX epoch.
-
- ## License
-
- MIT
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