auto split corks if they get too big

This commit is contained in:
Mathias Buus 2022-07-06 14:39:04 +02:00
parent 3a2c88c5cb
commit 5606c5ef85
3 changed files with 55 additions and 1 deletions

View File

@ -5,6 +5,7 @@ const safetyCatch = require('safety-catch')
const MAX_BUFFERED = 32768
const MAX_BACKLOG = Infinity // TODO: impl "open" backpressure
const MAX_BATCH = 8 * 1024 * 1024
class Channel {
constructor (mux, info, userData, protocol, id, handshake, messages, onopen, onclose, ondestroy) {
@ -337,6 +338,12 @@ module.exports = class Protomux {
}
_pushBatch (localId, buffer) {
if (this._batchState.end >= MAX_BATCH) {
this._sendBatch(this._batch, this._batchState)
this._batch = []
this._batchState = { buffer: null, start: 0, end: 1 }
}
if (this._batch.length === 0 || this._batch[this._batch.length - 1].localId !== localId) {
this._batchState.end++
c.uint.preencode(this._batchState, localId)

View File

@ -10,7 +10,7 @@
"safety-catch": "^1.0.1"
},
"devDependencies": {
"@hyperswarm/secret-stream": "^5.1.4",
"@hyperswarm/secret-stream": "^6.0.0",
"brittle": "^2.0.1",
"standard": "^16.0.4"
},

47
test.js
View File

@ -2,6 +2,7 @@ const Protomux = require('./')
const SecretStream = require('@hyperswarm/secret-stream')
const test = require('brittle')
const c = require('compact-encoding')
const b4a = require('b4a')
test('basic', function (t) {
const a = new Protomux(new SecretStream(true))
@ -189,6 +190,52 @@ test('corks', function (t) {
}
})
test('mega cork', function (t) {
const a = new Protomux(new SecretStream(true))
a.cork()
const ap = a.createChannel({
protocol: 'mega'
})
ap.open()
const a1 = ap.addMessage({ encoding: c.buffer })
const b = new Protomux(new SecretStream(false))
const bp = b.createChannel({
protocol: 'mega'
})
bp.open()
const b1 = bp.addMessage({ encoding: c.buffer })
replicate(a, b)
t.plan(32 + 4)
const buf = b4a.alloc(1024 * 1024)
const expected = []
for (let i = 0; i < 32; i++) {
a1.send(buf)
expected.push(buf)
}
a.uncork()
b.stream.on('data', function (data) {
t.ok(data.byteLength > 8000000, 'got big message')
})
b1.onmessage = function (message) {
t.alike(message, expected.shift())
}
})
test('handshake', function (t) {
const a = new Protomux(new SecretStream(true))
const b = new Protomux(new SecretStream(false))