Update WiFiMulti.cpp (espressif#1220)

* Update WiFiMulti.cpp

added 5 sec timeout from ESP8266

* Update WiFiMulti.cpp

* Update WiFiMulti.h

Author: c0zm0z

libraries/WiFi/src/WiFiMulti.cpp

@@ -42,7 +42,7 @@ bool WiFiMulti::addAP(const char* ssid, const char *passphrase)
     return APlistAdd(ssid, passphrase);
 }
 
-uint8_t WiFiMulti::run(void)
+uint8_t WiFiMulti::run(uint32_t connectTimeout)
 {
 
     int8_t scanResult;
@@ -117,9 +117,10 @@ uint8_t WiFiMulti::run(void)
 
                 WiFi.begin(bestNetwork.ssid, bestNetwork.passphrase, bestChannel, bestBSSID);
                 status = WiFi.status();
-
-                // wait for connection or fail
-                while(status != WL_CONNECTED && status != WL_NO_SSID_AVAIL && status != WL_CONNECT_FAILED) {
+                
+                auto startTime = millis();
+                // wait for connection, fail, or timeout
+                while(status != WL_CONNECTED && status != WL_NO_SSID_AVAIL && status != WL_CONNECT_FAILED && (millis() - startTime) <= connectTimeout) {
                     delay(10);
                     status = WiFi.status();
                 }

libraries/WiFi/src/WiFiMulti.h

@@ -54,7 +54,7 @@ class WiFiMulti
 
     bool addAP(const char* ssid, const char *passphrase = NULL);
 
-    uint8_t run(void);
+    uint8_t run(uint32_t connectTimeout=5000);
 
 private:
     std::vector<WifiAPlist_t> APlist;