ESP8266 - Switch WIFI [ADVANCED]

Projects Programming
1

Hey smart guys, whats up. First time that im begging for help here. First of all thank you for all answers, everything is helpfull.

Guys quick cap, im developing a wearble device, with the ESP8266 and OLED LCD, using arduino IDE.
Basically, im using that BasicHttpClient exemple from IDE, that way i can send request for any URL i want.

[Problem]
But in a wearble device, using wifi, sometime i wont have internet connection or wireless connection available, but i have 2 wireless work in a place. If i walk by these places, sometime the range of one of these will be over but probably i will be inside the other range. Using this examples, when the connection loses with that one, i want connect to other one or stay searching for those two networks. I already try a lot by myself in that code.

#include <Arduino.h>

#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>

#include <ESP8266HTTPClient.h>

#define USE_SERIAL Serial

ESP8266WiFiMulti WiFiMulti;

void setup() {

    USE_SERIAL.begin(115200);
   // USE_SERIAL.setDebugOutput(true);

    USE_SERIAL.println();
    USE_SERIAL.println();
    USE_SERIAL.println();

    for(uint8_t t = 4; t > 0; t--) {
        USE_SERIAL.printf("[SETUP] WAIT %d...\n", t);
        USE_SERIAL.flush();
        delay(1000);
    }

    WiFiMulti.addAP("TI MRE", "zxxzxz");
    WiFiMulti.addAP("OTHERWIFI", "dsadsa");

}

void loop() {
    // wait for WiFi connection
    if((WiFiMulti.run() == WL_CONNECTED)) {

        HTTPClient http;

        USE_SERIAL.print("[HTTP] begin...\n");
        // configure traged server and url
        //http.begin("https://192.168.1.12/test.html", "7a 9c f4 db 40 d3 62 5a 6e 21 bc 5c cc 66 c8 3e a1 45 59 38"); //HTTPS
        http.begin("http://192.168.1.12/test.html"); //HTTP

        USE_SERIAL.print("[HTTP] GET...\n");
        // start connection and send HTTP header
        int httpCode = http.GET();

        // httpCode will be negative on error
        if(httpCode > 0) {
            // HTTP header has been send and Server response header has been handled
            USE_SERIAL.printf("[HTTP] GET... code: %d\n", httpCode);

            // file found at server
            if(httpCode == HTTP_CODE_OK) {
                String payload = http.getString();
                USE_SERIAL.println(payload);
            }
        } else {
            USE_SERIAL.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
        }

        http.end();
    }

    delay(10000);
}

I already triend, using a variable as trigger to check first, WiFiMulti.run() != WL_CONNECTED too, tried a function with, a else in "if(httpCode > 0) {}".

Some of those changes that i have made, doesnt work, in some situations the ESP stop that "Guided Loop" and start to send only this:

add 0
aid 5
cnt 
state: 5 -> 0 (0)
rm 0
f r0, scandone
f r0, scandone
state: 0 -> 2 (b0)
state: 2 -> 3 (0)
state: 3 -> 5 (10)
add 0
aid 5
cnt

If someone knows something, i appreciate so much. Thank you all for comments.