Timed out after session started

[jiangying000]

code run with go run main.go
env is set, and libs installed

package main

import (
	"fmt"
	"os"
	"time"

	"github.com/Microsoft/cognitive-services-speech-sdk-go/audio"
	"github.com/Microsoft/cognitive-services-speech-sdk-go/speech"
)

func sessionStartedHandler(event speech.SessionEventArgs) {
	defer event.Close()
	fmt.Println("Session Started (ID=", event.SessionID, ")")
}

func sessionStoppedHandler(event speech.SessionEventArgs) {
	defer event.Close()
	fmt.Println("Session Stopped (ID=", event.SessionID, ")")
}

func recognizingHandler(event speech.SpeechRecognitionEventArgs) {
	defer event.Close()
	fmt.Println("Recognizing:", event.Result.Text)
}

func recognizedHandler(event speech.SpeechRecognitionEventArgs) {
	defer event.Close()
	fmt.Println("Recognized:", event.Result.Text)
}

func cancelledHandler(event speech.SpeechRecognitionCanceledEventArgs) {
	defer event.Close()
	fmt.Println("Received a cancellation: ", event.ErrorDetails)
	fmt.Println("Did you set the speech resource key and region values?")
}

func main() {
	fmt.Println("startx")
	speechKey := os.Getenv("SPEECH_KEY")
	speechRegion := os.Getenv("SPEECH_REGION")

	//     speechKey :=  "e73873c79fe84132b8fbadb784428ef6"

	// file := "./ch_m.wav"
	file := "./OSR_us_000_0010_8k.wav"

	audioConfig, err := audio.NewAudioConfigFromWavFileInput(file)
	if err != nil {
		fmt.Println("Got an error1: ", err)
		return
	}
	defer audioConfig.Close()

	config, err := speech.NewSpeechConfigFromSubscription(speechKey, speechRegion)
	if err != nil {
		fmt.Println("Got an error:2 ", err)
		return
	}
	defer config.Close()

	speechRecognizer, err := speech.NewSpeechRecognizerFromConfig(config, audioConfig)
	if err != nil {
		fmt.Println("Got an error:3 ", err)
		return
	}
	defer speechRecognizer.Close()

	speechRecognizer.SessionStarted(sessionStartedHandler)
	speechRecognizer.SessionStopped(sessionStoppedHandler)
	speechRecognizer.Recognizing(recognizingHandler)
	speechRecognizer.Recognized(recognizedHandler)
	speechRecognizer.Canceled(cancelledHandler)

	task := speechRecognizer.RecognizeOnceAsync()
	var outcome speech.SpeechRecognitionOutcome
	select {
	case outcome = <-task:
		fmt.Println("got", outcome)
	case <-time.After(30 * time.Second):
		fmt.Println("Timed out")
		return
	}
	fmt.Println("selected")
	defer outcome.Close()
	if outcome.Error != nil {
		fmt.Println("Got an error: ", outcome.Error)
	}
	fmt.Println("Got a recognition!")
	fmt.Println(outcome)
	fmt.Println(outcome.Result)
	fmt.Println(outcome.Result.Text)
	// fmt.Println(outcome.Result.Reason)
	// fmt.Println(outcome.Result.Text)
}

output is

startx
Session Started (ID= ff0bfbd222394d89866cc2adc5ff0d94 )
Timed out

but curl success:

[jiangying000]

turned out to be network issue

[jiangying000]

happens again, java sdk is ok on same machine.

update:
java demo takes 2-3s, while go demo takes 32s to transcript same 33s wav file on same server