I've been experiment with WebSockets and HTTP/2 libraries in Node and Go. My basic setup is to create a client and server, repeatedly send a file from the server and measure the time until each file is available at the client.
To my surprise, the HTTP/2 Push implementation performs significantly better than WebSocket (more than 5x faster in total time). Am I doing something wrong?
My Gorilla WebSocket and node-ws servers below:
Go
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())
}
}
Node
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);
}
});