Why ESP32 with static IP address can't connect to internet but can ping normally? - httprequest

Question

I have connected ESP32 to WIFI, but this WIFI must fix IP address, Gateway, Subnet mask, DNS and MAC. So, I assign them and test with two codes. The first one is with a ping library and the 2nd one is with http request to Google.
Ping code
#include <WiFi.h>
#include <ESP32Ping.h>
const char* ssid = "test";
const char* password = "test";
IPAddress staticIP(172, 16, 116, 90);
IPAddress gateway(172, 16, 116, 254);
IPAddress subnet(255, 255, 255, 0);
IPAddress dns(172, 17, 10, 1);
void setup(){
Serial.begin(115200);
if (WiFi.config(staticIP, gateway, subnet, dns, dns) == false) {
Serial.println("Configuration failed.");
}
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print("Connecting...\n\n");
}
Serial.print("Local IP: ");
Serial.println(WiFi.localIP());
Serial.print("Subnet Mask: ");
Serial.println(WiFi.subnetMask());
Serial.print("Gateway IP: ");
Serial.println(WiFi.gatewayIP());
Serial.print("DNS 1: ");
Serial.println(WiFi.dnsIP(0));
Serial.print("DNS 2: ");
Serial.println(WiFi.dnsIP(1));
bool success = Ping.ping("www.google.com", 3);
if(!success){
Serial.println("\nPing failed");
return;
}
Serial.println("\nPing successful.");
}
void loop(){}
Http request code
#include <WiFi.h>
#include <HTTPClient.h>
const char* ssid = "test";
const char* password = "test";
IPAddress staticIP(172, 16, 116, 90);
IPAddress gateway(172, 16, 116, 254);
IPAddress subnet(255, 255, 255, 0);
IPAddress dns(172, 17, 10, 1);
void setup() {
Serial.begin(115200);
if (WiFi.config(staticIP, gateway, subnet, dns, dns) == false) {
Serial.println("Configuration failed.");
}
delay(4000);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi..");
}
Serial.println("Connected to the WiFi network");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
Serial.println("MAC address: ");
Serial.println(WiFi.macAddress());
}
void loop() {
if ((WiFi.status() == WL_CONNECTED)) { //Check the current connection status
HTTPClient http;
http.begin("www.google.com"); //Specify the URL
int httpCode = http.GET(); //Make the request
if (httpCode > 0) { //Check for the returning code
String payload = http.getString();
Serial.println(httpCode);
}
else {
Serial.println("Error on HTTP request");
}
http.end(); //Free the resources
} else {
Serial.println("WiFi lost");
}
delay(10000);
}
After I tried, output of the first one is working normally. But the 2nd one seems like it can connect to Wi-Fi only one time but can't make request after that it lost connection. I so confused pls help.
It can't connect via mqtt too.
Output 1st code
Output 2nt code