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sendernid.go
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/
sendernid.go
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/*
Send STOMP messages using https://github.com/gmallard/stompngo and a STOMP
1.1 broker.
*/
package main
import (
"fmt" //
"github.com/gmallard/stompngo"
"log"
"net"
"os"
"runtime"
"strconv"
"sync"
"time"
)
var wg sync.WaitGroup
var printMsgs bool = true
var nmsgs = 10
var qname = "/queue/stompngo.srpub"
var mq = 2
var host = "localhost"
var hap = host + ":"
func sendMessages(c *stompngo.Connection, q string, n int, k int) {
var error error
// Send
eh := stompngo.Headers{"destination", q} // Extra headers
for i := 1; i <= n; i++ {
m := q + " gostomp message #" + strconv.Itoa(i)
if printMsgs {
fmt.Println("msg:", m)
}
error = c.Send(eh, m)
if error != nil {
log.Fatalf("send error: %v\n", error)
}
//
time.Sleep(1e9 / 100) // Simulate message build
}
error = c.Send(eh, "***EOF*** "+q)
if error != nil {
log.Fatal(error)
}
wg.Done()
}
func main() {
fmt.Println("Start...")
//
nc, error := net.Dial("tcp", hap+os.Getenv("STOMP_PORT"))
if error != nil {
// Handle error properly
}
// Connect
ch := stompngo.Headers{"login", "putter", "passcode", "send1234",
"accept-version", "1.1", "host", host}
c, error := stompngo.Connect(nc, ch)
if error != nil {
log.Fatal(error)
}
for i := 1; i <= mq; i++ {
qn := fmt.Sprintf("%d", i)
wg.Add(1)
go sendMessages(c, qname+qn, nmsgs, i)
}
wg.Wait()
fmt.Println("done with wait")
// Disconnect
nh := stompngo.Headers{}
error = c.Disconnect(nh)
if error != nil {
log.Fatalf("discerr %v\n", error)
}
fmt.Println("done disconnect, start nc.Close()")
nc.Close()
fmt.Println("done nc.Close()")
ngor := runtime.NumGoroutine()
fmt.Printf("egor: %v\n", ngor)
select {
case v := <-c.MessageData:
fmt.Printf("frame2: %v\n", v)
default:
fmt.Println("Nothing to show")
}
fmt.Println("End... ngor:", mq, " nmsgs:", nmsgs)
}