small fixes (#23)

* cast, fixes #8

* Arduino Server preferred API: ::available() -> ::accept()

* update to newer esp8266 ESP.getHeapStats api

Author: d-a-v

ESPWebDAV.cpp

@@ -1088,7 +1088,7 @@ void ESPWebDAVCore::handlePut(ResourceType resource)
             size_t written = 0;
             while (written < numRead)
             {
-                auto numWrite = file.write(buf + written, numRead - written);
+                auto numWrite = file.write((uint8_t*)buf + written, numRead - written);
                 if (numWrite == 0 || (int)numWrite == -1)
                 {
                     DBG_PRINT("error: numread=%d write=%d written=%d", (int)numRead, (int)numWrite, (int)written);

WebSrv.cpp

@@ -97,7 +97,7 @@ void ESPWebDAV::handleClient()
         {
             // no or sleeping current client
             // take it over
-            locClient = server->available();
+            locClient = server->accept();
             m_persistent_timer_ms = millis();
             DBG_PRINT("NEW CLIENT-------------------------------------------------------");
         }

examples/Hooked/Hooked.ino

@@ -161,7 +161,7 @@ void help()
     Serial.printf("interactive: F/ormat D/ir C/reateFile\n");
 
     uint32_t freeHeap;
-    uint16_t maxBlock;
+    uint32_t maxBlock;
     uint8_t fragmentation;
     ESP.getHeapStats(&freeHeap, &maxBlock, &fragmentation);
     Serial.printf("Heap stats: free heap: %u - max block: %u - fragmentation: %u%%\n",