forked from me-no-dev/ESPAsyncWebServer
* Prevent buffer overflow on received data * pass to 7 char to avoid save to flash by SDK * return _contentLength, avoid array reparse to know len * Added FlashStringHelper for text and binary * Added FlashStringHelper also to AsyncWebSocketClient * Added PROGMEM doc * Corrected binary was sending PSTR as text, addded len * Server calls client method and code as asked @me-no-dev * server calls client method and code as asked by @me-no-dev * Changed Code presentation