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goroutinepoolwebsocketclient.go
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/
goroutinepoolwebsocketclient.go
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package main
import (
"flag"
"fmt"
"github.com/gorilla/websocket"
"github.com/panjf2000/ants"
"log"
"net/url"
"os"
"os/signal"
"sync"
"time"
)
var addr = flag.String("addr", "192.168.9.142:7776", "http service address")
func main() {
p, _ := ants.NewPool(200000)
defer p.Release()
var wg sync.WaitGroup
go func() {
for {
fmt.Printf("pool, running workers number:%d\n", p.Running())
fmt.Printf("pool, Cap workers number:%d\n", p.Cap())
fmt.Printf("pool, Free workers number:%d\n", p.Free())
time.Sleep(1 * time.Second)
}
}()
for i := 0; i < 100000; i++ {
wg.Add(1)
_ = p.Submit(func() {
wscient()
wg.Done()
})
}
wg.Wait()
}
func wscient() {
flag.Parse()
log.SetFlags(0)
interrupt := make(chan os.Signal, 1)
signal.Notify(interrupt, os.Interrupt)
u := url.URL{Scheme: "ws", Host: *addr, Path: "/ws"}
log.Printf("connecting to %s", u.String())
c, _, err := websocket.DefaultDialer.Dial(u.String(), nil)
if err != nil {
log.Fatal("dial:", err)
}
defer c.Close()
done := make(chan struct{})
go func() {
defer close(done)
for {
_, message, err := c.ReadMessage()
if err != nil {
log.Println("read:", err)
return
}
log.Printf("recv: %s", message)
}
}()
ticker := time.NewTicker(time.Second)
defer ticker.Stop()
for {
select {
case <-done:
return
case t := <-ticker.C:
err := c.WriteMessage(websocket.TextMessage, []byte(t.String()))
if err != nil {
log.Println("write:", err)
return
}
case <-interrupt:
log.Println("interrupt")
// Cleanly close the connection by sending a close message and then
// waiting (with timeout) for the server to close the connection.
err := c.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""))
if err != nil {
log.Println("write close:", err)
return
}
select {
case <-done:
case <-time.After(time.Second):
}
return
}
}
}