adds #1137 connect retries

setConnectRetries()

WiFiManager.cpp

@@ -755,7 +755,7 @@ bool WiFiManager::shutdownConfigPortal(){
 // clean up, flow is convoluted, and causes bugs
 uint8_t WiFiManager::connectWifi(String ssid, String pass) {
   DEBUG_WM(DEBUG_VERBOSE,F("Connecting as wifi client..."));
-  
+  uint8_t retry = 1;
   uint8_t connRes = (uint8_t)WL_NO_SSID_AVAIL;
 
   setSTAConfig();
@@ -766,6 +766,10 @@ uint8_t WiFiManager::connectWifi(String ssid, String pass) {
   if(_cleanConnect) WiFi_Disconnect(); // disconnect before begin, in case anything is hung, this causes a 2 seconds delay for connect
   // @todo find out what status is when this is needed, can we detect it and handle it, say in between states or idle_status
 
+  while(retry <= _connectRetries){
+  if(_connectRetries > 1){
+      DEBUG_WM(F("Connect Wifi, ATTEMPT #"),(String)retry+" of "+(String)_connectRetries); 
+  }
   // if ssid argument provided connect to that
   if (ssid != "") {
     wifiConnectNew(ssid,pass);
@@ -783,11 +787,13 @@ uint8_t WiFiManager::connectWifi(String ssid, String pass) {
       connRes = waitForConnectResult();
     }
     else {
-      DEBUG_WM(F("No wifi save required, skipping"));
+      DEBUG_WM(F("No wifi saved, skipping"));
     }
   }
 
   DEBUG_WM(DEBUG_VERBOSE,F("Connection result:"),getWLStatusString(connRes));
+  retry++;
+}
 
 // WPS enabled? https://github.com/esp8266/Arduino/pull/4889
 #ifdef NO_EXTRA_4K_HEAP
@@ -2057,6 +2063,17 @@ void WiFiManager::setConfigPortalTimeout(unsigned long seconds) {
 void WiFiManager::setConnectTimeout(unsigned long seconds) {
   _connectTimeout = seconds * 1000;
 }
+
+/**
+ * [setConnectRetries description]
+ * @access public
+ * @param {[type]} uint8_t numRetries [description]
+ */
+void WiFiManager::setConnectRetries(uint8_t numRetries){
+  _connectRetries = numRetries;
+  if(_connectRetries > 10) numRetries = 10; // some cap
+}
+
 /**
  * toggle _cleanconnect, always disconnect before connecting
  * @param {[type]} bool enable [description]