chrome-http2-log-parser

chrome-http2-log-parser

This repo contains a module for parsing the output of Chrome's HTTP/2 net-internals and turning it into something more useful.

Installation

npm install chrome-http2-log-parser

Usage

Given a file session.txt that contains the output of the Chrome HTTP/2 net-internals log, and given that it is a sibling of the file report.js that contains the following code:

var path = require('path');

var parser = require('chrome-http2-log-parser');

parser(path.resolve(__dirname, './session.txt'), {
  reporters: [
    'text',
    'textCompact'
  ],
  // the resolution, in milliseconds, of the report
  interval: 5
}, function (err, data) {
  if (err) {
    throw err;
  }

  // an array of objects representing the records in the log
  console.log(data.records);

  // an object with an property for each stream id; the value of
  // the property is an array of objects associated with the stream id,
  // in the order in which they appeared in the log
  console.log(data.streams);

  // the output of the text reporter
  console.log(data.reports.text);

  // the output of the textCompact reporter
  console.log(data.reports.textCompact);
});

Run node report to see the data parsed from the log.

Reporters

text

Generates a text table showing the beginning of each record for each stream; includes the path for each stream, as well as a key.

Example output:

===
S: HTTP2_SESSION_SEND_HEADERS
R: HTTP2_SESSION_RECV_HEADERS
D: HTTP2_SESSION_RECV_DATA
P: HTTP2_SESSION_RECV_PUSH_PROMISE
A: HTTP2_STREAM_ADOPTED_PUSH_STREAM
*: OTHER
===
INTERVAL: 5ms
===
STREAM 0:
             *
STREAM 1: /index-separate.html?push=/common/libs/combined.js
S            R                     D         D
STREAM 2: /common/libs/combined.js
             PDR       DDDD       DDDDDD   DDDDDD                                  A
STREAM 3: /common/libs/jquery.min.js?z=0
                                      S          DRDDDDDDDDDDDD
STREAM 5: /common/libs/jquery.min.js?z=1
                                        S             R  DDDDDDDDDD                              DDDD          D
STREAM 7: /common/libs/jquery.min.js?z=2
                                        S               R     DDDDDDDD                           DDD           D
STREAM 9: /common/libs/jquery.min.js?z=3
                                        S               R        DDDDDDDD                        DDD           D
STREAM 11: /common/libs/jquery.min.js?z=4
                                        S                R         DDDDDD  DD                    DDD           D
STREAM 13: /common/libs/jquery.min.js?z=5
                                        S                R                  DDDDDDDD              DDDD         D
STREAM 15: /common/libs/jquery.min.js?z=6
                                        S                R                     DDDDDDDD            DDD         D
STREAM 17: /common/libs/jquery.min.js?z=7
                                        S                R                       DDDDDDDD          DDD         D
STREAM 19: /common/libs/jquery.min.js?z=8
                                        S                R                         DDDDD       DDDDDDDD        D
STREAM 21: /common/libs/jquery.min.js?z=9
                                        S                R                                     DDDDDDDDDDDDDD  DD

textCompact

Generates a compact text table showing the beginning of each record for each stream.

Example output:

0:	             *
1:	S            R                     D         D
2:	             PDR       DDDD       DDDDDD   DDDDDD                                  A
3:	                                      S          DRDDDDDDDDDDDD
5:	                                        S             R  DDDDDDDDDD                              DDDD          D
7:	                                        S               R     DDDDDDDD                           DDD           D
9:	                                        S               R        DDDDDDDD                        DDD           D
11:	                                        S                R         DDDDDD  DD                    DDD           D
13:	                                        S                R                  DDDDDDDD              DDDD         D
15:	                                        S                R                     DDDDDDDD            DDD         D
17:	                                        S                R                       DDDDDDDD          DDD         D
19:	                                        S                R                         DDDDD       DDDDDDDD        D
21:	                                        S                R                                     DDDDDDDDDDDDDD  DD

TODO

• HTML reporter