Replace _uploadReadByte() in WebServer/Parsing.cpp with ESP8266 imple…

…mentation.

libraries/WebServer/src/Parsing.cpp

@@ -309,42 +309,14 @@ void WebServer::_uploadWriteByte(uint8_t b){
   _currentUpload->buf[_currentUpload->currentSize++] = b;
 }
 
-int WebServer::_uploadReadByte(WiFiClient& client){
+int WebServer::_uploadReadByte(WiFiClient& client) {
   int res = client.read();
-  if(res < 0) {
-    // keep trying until you either read a valid byte or timeout
-    unsigned long startMillis = millis();
-    long timeoutIntervalMillis = client.getTimeout();
-    boolean timedOut = false;
-    for(;;) {
-      if (!client.connected()) return -1;
-      // loosely modeled after blinkWithoutDelay pattern
-      while(!timedOut && !client.available() && client.connected()){
-        delay(2);
-        timedOut = millis() - startMillis >= timeoutIntervalMillis;
-      }
 
-      res = client.read();
-      if(res >= 0) {
-        return res; // exit on a valid read
-      }
-      // NOTE: it is possible to get here and have all of the following
-      //       assertions hold true
-      //
-      //       -- client.available() > 0
-      //       -- client.connected == true
-      //       -- res == -1
-      //
-      //       a simple retry strategy overcomes this which is to say the
-      //       assertion is not permanent, but the reason that this works
-      //       is elusive, and possibly indicative of a more subtle underlying
-      //       issue
-
-      timedOut = millis() - startMillis >= timeoutIntervalMillis;
-      if(timedOut) {
-        return res; // exit on a timeout
-      }
-    }
+  if (res < 0) {
+    while(!client.available() && client.connected())
+      delay(2);
+
+    res = client.read();
   }
 
   return res;