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chg: [main] rate limiter

d4forward
Jean-Louis Huynen 2 years ago
parent
commit
2f6da40367
No known key found for this signature in database GPG Key ID: 64799157F4BD6B93
  1. 14
      d4-goclient.go

14
d4-goclient.go

@ -66,6 +66,7 @@ type (
ct time.Duration
ce bool
retry time.Duration
rate time.Duration
cc bool
ca x509.CertPool
d4error uint8
@ -104,13 +105,15 @@ var (
tmpct, _ = time.ParseDuration("5mn")
tmpcka, _ = time.ParseDuration("30s")
tmpretry, _ = time.ParseDuration("30s")
tmprate, _ = time.ParseDuration("200ms")
confdir = flag.String("c", "", "configuration directory")
debug = flag.Bool("v", false, "Set to True, true, TRUE, 1, or t to enable verbose output on stdout")
ce = flag.Bool("ce", true, "Set to True, true, TRUE, 1, or t to enable TLS on network destination")
ct = flag.Duration("ct", tmpct, "Set timeout in human format")
cka = flag.Duration("cka", tmpcka, "Keep Alive time human format, 0 to disable")
retry = flag.Duration("rt", tmpretry, "Time in human format before retry after connection failure, set to 0 to exit on failure")
retry = flag.Duration("rt", tmpretry, "Rime in human format before retry after connection failure, set to 0 to exit on failure")
rate = flag.Duration("rl", tmprate, "Rate limiter: time in human format before retry after EOF")
cc = flag.Bool("cc", false, "Check TLS certificate against rootCA.crt")
)
@ -156,11 +159,15 @@ func main() {
d4.cc = *cc
d4.cka = *cka
d4.retry = *retry
d4.rate = *rate
s := make(chan os.Signal, 1)
signal.Notify(s, os.Interrupt, os.Kill)
c := make(chan string)
// Launching the Rate limiter
ratelimiter := time.Tick(d4.rate)
d4.mhb = bytes.NewBuffer(d4.mh)
for {
@ -180,6 +187,9 @@ func main() {
}
// copy routine
go d4Copy(d4p, c)
log.Printf("---d4Copy")
// Block until the rate limiter allow us to continue
<-ratelimiter
} else if d4.retry > 0 {
go func() {
infof(fmt.Sprintf("Sleeping for %.f seconds before retry...\n", d4.retry.Seconds()))
@ -195,7 +205,7 @@ func main() {
select {
case str := <-c:
infof(str)
// log.Printf("Channel c: %q\n", str)
//log.Printf("Channel c: %q\n", str)
continue
case <-s:
fmt.Println(" Exiting")

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