爲什麼在傳輸多個文件時WebSocket的實現比HTTP/2 Push慢呢？ （Node.js/Go）

Question

我一直在使用Node和Go中的WebSockets和HTTP/2庫進行實驗。我的基本設置是創建客戶端和服務器，重複從服務器發送文件並測量時間，直到每個文件在客戶端可用。

令我驚訝的是，HTTP/2 Push實現的性能明顯優於WebSocket（總時間快5倍以上）。難道我做錯了什麼？

我Gorilla WebSocket和node-ws服務器如下：

轉到

package main 

import (
    "net/http" 
    "io/ioutil" 
    "log" 
    "github.com/gorilla/websocket" 
) 

var file []byte 

var upgrader = websocket.Upgrader{ 
    ReadBufferSize: 1024, 
    WriteBufferSize: 1024, 
} 

func handler(w http.ResponseWriter, r *http.Request) { 
    conn, err := upgrader.Upgrade(w, r, nil) 
    if err != nil { 
     log.Fatal(err) 
    } 

    for i := 0; i < 100; i++ { 
     conn.WriteMessage(2, file) 
    } 
} 

func main() { 
    file, _ = ioutil.ReadFile("<path-to-file>") 

    http.HandleFunc("/", handler) 
    err := http.ListenAndServeTLS(":443", "<path-to-cert>", "<path-to-key>", nil) 
    if err != nil { 
    panic("ListenAndServe: " + err.Error()) 
    } 
} 

節點

const WebSocket = require('ws'); 
const https = require('https'); 
const fs = require('fs'); 

const options = { 
    key: fs.readFileSync('<path-to-key>'), 
    cert: fs.readFileSync('<path-to-cert>') 
}; 

var file = fs.readFileSync('<path-to-file>') 

var httpServer = new https.createServer(options).listen(443); 

var wss = new WebSocket.Server({ 
    server: httpServer, 
    perMessageDeflate: false 
}); 

wss.on('connection', function(ws) { 
    for (let i = 0; i < repetition; i++) { 
    ws.send(file); 
    } 
}); 

Answer 1

見https://github.com/gorilla/websocket/issues/228。 OP使用HTTP/2 Push測量打開流的時間，而不是通過流傳輸所有數據的時間。 OP發現Websockets比HTTP/2推送更快。