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main.go
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main.go
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package main
import (
"fmt"
"log"
"net/http"
"time"
"github.com/gorilla/websocket"
)
var upgrader = websocket.Upgrader{
HandshakeTimeout: 0,
ReadBufferSize: 1024,
WriteBufferSize: 1024,
Subprotocols: nil,
Error: nil,
CheckOrigin: checkOrigin,
EnableCompression: false,
}
func checkOrigin(r *http.Request) bool {
return true
}
func main() {
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
peer, err := upgrader.Upgrade(w, r, nil)
if err != nil {
log.Fatal(err)
}
count := 0
ticker := time.NewTicker(1 * time.Second)
go func() {
for {
select {
case <-ticker.C:
count++
msg := []byte(fmt.Sprintf("hello world: %v", count))
// write message to peer
if err = peer.WriteMessage(websocket.TextMessage, msg); err != nil {
log.Fatal(err)
}
}
}
}()
for {
// read message from browser
_, msg, err := peer.ReadMessage()
if err != nil {
log.Fatal(err)
}
data := string(msg)
fmt.Printf("received: %s\n", data)
fmt.Printf("from: %s\n", peer.RemoteAddr())
}
})
log.Fatal(http.ListenAndServe(":8080", nil))
}
/* // BROWSER!
var peer = new WebSocket('ws://localhost:8080')
peer.onopen = function(o){ console.log('open', o) }
peer.onclose = function(c){ console.log('close', c) }
peer.onmessage = function(m){ console.log(m.data) }
peer.onerror = function(e){ console.log('error', e) }
*/