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Optimize reading large messages with lots of tiny partial body parts (#864)

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* Fix pako decompression

* Optimize base64-decoding

* Don't stream-parse packets when not stream-reading data
This commit is contained in:
Daniel Huigens
2019-02-21 17:33:55 +01:00
committed by Sanjana Rajan
parent 54fc1dde3d
commit 5dcaf85f5a
7 changed files with 36 additions and 24 deletions
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10
src/encoding/base64.js
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@@ -21,6 +21,13 @@ import stream from 'web-stream-tools';
const b64s = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'; // Standard radix-64
const b64u = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_'; // URL-safe radix-64
const b64toByte = [];
for (let i = 0; i < b64s.length; i++) {
b64toByte[b64s.charCodeAt(i)] = i;
}
b64toByte[b64u.charCodeAt(62)] = 62;
b64toByte[b64u.charCodeAt(63)] = 63;
/**
* Convert binary array to radix-64
* @param {Uint8Array | ReadableStream<Uint8Array>} t Uint8Array to convert
@@ -98,7 +105,6 @@ function s2r(t, u = false) {
*/
function r2s(t, u) {
// TODO check atob alternative
const b64 = u ? b64u : b64s;
let c;
let s = 0;
@@ -109,7 +115,7 @@ function r2s(t, u) {
const r = new Uint8Array(Math.ceil(0.75 * tl));
let index = 0;
for (let n = 0; n < tl; n++) {
c = b64.indexOf(value.charAt(n));
c = b64toByte[value.charCodeAt(n)];
if (c >= 0) {
if (s) {
r[index++] = a | ((c >> (6 - s)) & 255);