Not able to call ecs service when service-connect enabled

Hello

I am trying to launch 2 ecs services (go containers). I called these services as firstservice and secondservice. I have enabled client service-connect on first service and client and server service-connect on second service. I am making a http request from first service to second service every 5 sec but every request is throwing an error

client: response body: upstream request timeout and status 504 Gateway Timeout

Code for first service

func loop() {
	for true {
		requestURL := "http://secondservice:8082"
		resp, err := http.Get(requestURL)
		if err != nil {
			fmt.Printf("error making http request: %s\n", err)
		} else {
			resBody, err := io.ReadAll(resp.Body)
			if err != nil {
				fmt.Printf("client: could not read response body: %s\n", err)
				os.Exit(1)
			}
			fmt.Printf("client: response body: %s and status %s\n", resBody, resp.Status)
		}

		time.Sleep(5 * time.Second)
	}
}

func main() {

	logger = log.New(os.Stdout, "MyApp: ", log.LstdFlags|log.Lshortfile)

	http.HandleFunc("/", handler)
	go loop()
	logger.Println("Running basic service")
	logger.Fatal(http.ListenAndServe(":8080", nil))
}

docker file for first service

FROM golang:1.20 AS build-stage

# Set destination for COPY
WORKDIR /app

# Download Go modules
COPY go.mod ./
RUN go mod download

# Copy the source code. Note the slash at the end, as explained in
# https://docs.docker.com/engine/reference/builder/#copy
COPY *.go ./

# Build
RUN CGO_ENABLED=0 GOOS=linux go build -o /firstservice

FROM gcr.io/distroless/base-debian11 AS build-release-stage

WORKDIR /

COPY --from=build-stage /firstservice /firstservice

EXPOSE 8080

USER nonroot:nonroot

ENTRYPOINT ["/firstservice"]

code for second service

func handler(w http.ResponseWriter, r *http.Request) {
	_, err := fmt.Fprintf(w, "Hi there, I know that!")
	logger.Println("request received ok bye")
	if err != nil {
		return
	}
}

func health(w http.ResponseWriter, r *http.Request) {
	logger.Println("health request received ok bye")
	w.WriteHeader(http.StatusOK)
	_, err := fmt.Fprintf(w, "OK")
	if err != nil {
		return
	}
}

func main() {

	logger = log.New(os.Stdout, "MyApp: ", log.LstdFlags|log.Lshortfile)

	http.HandleFunc("/", handler)
	http.HandleFunc("/health", health)
	logger.Println("Running basic service")
	logger.Fatal(http.ListenAndServe(":8082", nil))
}

Docker file for second service

FROM golang:1.20 AS build-stage

# Set destination for COPY
WORKDIR /app

# Download Go modules
COPY go.mod ./
RUN go mod download

# Copy the source code. Note the slash at the end, as explained in
# https://docs.docker.com/engine/reference/builder/#copy
COPY *.go ./

# Build
RUN CGO_ENABLED=0 GOOS=linux go build -o /secondservice

FROM gcr.io/distroless/base-debian11 AS build-release-stage

WORKDIR /

COPY --from=build-stage /secondservice /secondservice

EXPOSE 8082

USER nonroot:nonroot

ENTRYPOINT ["/secondservice"]

here is service connect config for second service

similar i have enabled for firstservice

Can you please help i am not sure what i am missing here