http-timer
Timings for HTTP requests
Inspired by the request
package.
Installation
NPM:
npm install @szmarczak/http-timer
Yarn:
yarn add @szmarczak/http-timer
Usage
'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 theresponse
event.end
- Time when the response fired theend
event.error
- Time when the request fired theerror
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
ortimings.error - timings.start
Note: The time is a number
representing the milliseconds elapsed since the UNIX epoch.
License
MIT