Interrupts httpcode returns -1

Hello,

I try to update a domoticz device in function of my waterflow sensor (YF-B1).
I use a Wemos D1 mini.

Here below the simple code to read the flow value in serial monitor:

```
int NbTopsFan;
int Calc;
int hallsensor = D6;

void ICACHE_RAM_ATTR rpm()
{
NbTopsFan++;
}

void setup() {
pinMode (hallsensor, INPUT_PULLUP);
Serial.begin(9600);
attachInterrupt(digitalPinToInterrupt(hallsensor), rpm, FALLING);

}

void loop() {
NbTopsFan = 0;
sei();
delay(1000);
cli();
Calc = (NbTopsFan * 2.2);
Serial.print (Calc, DEC);
Serial.println("L/h");
}
```
Here below the test code to update my domoticz device (update contineously with 300L/h):

```
#include
#include

const char* ssid = "xxx";
const char* password = "xxx";
const char* host = "192.168.1.100";
const int port = 8080;
const char* id = "x";
const char* mdp = "x";
const int idx = 15804;
const int watchdog = 5000; // Fréquence d'envoi (ms) des données à Domoticz - Frequency of sending data to Domoticz
unsigned long previousMillis = millis();

HTTPClient http;

void setup() {

Serial.begin(115200);
delay(10);

Serial.setDebugOutput(true);
Serial.println("Connecting Wifi...");

WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}

Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.print(WiFi.localIP());

}

void loop() {
unsigned long currentMillis = millis();

if ( currentMillis - previousMillis > watchdog ) {
previousMillis = currentMillis;

if(WiFi.status() != WL_CONNECTED) {
Serial.println("WiFi not connected !");
} else {
Serial.println("Send data to Domoticz");

String url = "/json.htm?username=";
url += String(id);
url += String("&password=");
url += String(mdp);
url += String("&type=command¶m=udevice&idx=");
url += String(idx);
url += String("&nvalue=0&svalue=");
url += String(300);

sendDomoticz(url);
}
}
}

void sendDomoticz(String url){
Serial.print("connecting to ");
Serial.println(host);
Serial.print("Requesting URL: ");
Serial.print(host);
Serial.print(":");
Serial.print(port);
Serial.println(url);
http.begin(host,port,url);
int httpCode = http.GET();
Serial.println(httpCode);
if (httpCode) {
if (httpCode == 200) {
String payload = http.getString();
Serial.println("Domoticz response ");
Serial.println(payload);
}
}
Serial.println("closing connection");
http.end();
}
```
Notice that the two previous codes work perfectly.

So I merge the both and here below the final code:

```
#include
#include

const char* ssid = "xxx";
const char* password = "xxx";
const char* host = "192.168.1.100";
const int port = 8080;
const char* id = "x";
const char* mdp = "x";
const int idx = 15804;
const int watchdog = 5000; // Fréquence d'envoi (ms) des données à Domoticz - Frequency of sending data to Domoticz
unsigned long previousMillis = millis();

int NbTopsFan;
int Calc;
int hallsensor = D6;

int value = 0;

void ICACHE_RAM_ATTR rpm()
{
NbTopsFan++;
}

HTTPClient http;

void setup() {

pinMode (hallsensor, INPUT_PULLUP);

Serial.begin(115200);
delay(10);

attachInterrupt(digitalPinToInterrupt(hallsensor), rpm, FALLING);

Serial.setDebugOutput(true);
Serial.println("Connecting Wifi...");

WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}

Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.print(WiFi.localIP());
}

void loop() {

NbTopsFan = 0;
sei();
delay(5000);
cli();
Calc = (NbTopsFan * 2.2);
Serial.print (Calc, DEC);
Serial.println("L/h");

unsigned long currentMillis = millis();

if ( currentMillis - previousMillis > watchdog ) {
previousMillis = currentMillis;

if(WiFi.status() != WL_CONNECTED) {
Serial.println("WiFi not connected !");
} else {
Serial.println("Send data to Domoticz");

String url = "/json.htm?username=";
url += String(id);
url += String("&password=");
url += String(mdp);
url += String("&type=command¶m=udevice&idx=");
url += String(idx);
url += String("&nvalue=0&svalue=");
url += String(Calc);

sendDomoticz(url);
}
}
}

void sendDomoticz(String url){
Serial.print("connecting to ");
Serial.println(host);
Serial.print("Requesting URL: ");
Serial.print(host);
Serial.print(":");
Serial.print(port);
Serial.println(url);
http.begin(host,port,url);
int httpCode = http.GET();
Serial.println(httpCode);
if (httpCode) {
if (httpCode == 200) {
String payload = http.getString();
Serial.println("Domoticz response ");
Serial.println(payload);
}
}
Serial.println("closing connection");
http.end();
}
```
And with that code, the httpcode returns -1.

I don't know why it doesn't work...

Have you any solution ?
Thank a lot.