* Corrections of Find, FindUntil and FindMulti
Find has some bug that is not working with Ethernet.find() so, I copied code from Stream.h and Stream.cpp in AVR-CORE library and now it's working perfectly.
I don't know where was the error, but an Ethernet.find compiled to MEGA2560 was working but not working when compiled to esp32, after corrections of code (copy of AVR-Core libraries) it's working perfect.
So probably has some error on original ESP32-Core library.
Below is part of code that was working with MEGA2560 and not with ESP32 libraries.
client.find never return TRUE with ESP32 original library and with AVR it's works.
boolean esp32_fw_update(EthernetClient &client, DecodedHeader &header, const String &field_filename, const String &field_crc) {
char bound[header.boundary.length()+3];
char term[]="\r\n";
strcpy(bound,header.boundary.c_str());
strcat(bound,term);
while (client.find(bound)) {
String line=client.readStringUntil('\r');
* Update Stream.h
* Update Stream.cpp
Co-authored-by: Me No Dev <me-no-dev@users.noreply.github.com>
* add opportunity for more than one retry to _uploadReadByte
* an alternative timeout-based method to making _uploadReadByte more resilient
* move timing variables in the correct scope
* implement and use client.getTimeout instead of hard-coded timeout in _uploadReadByte
* add missing return
* some refactoring to address respecting the timeout in a potentially deadlocked connection
* fix spelling in comment
* address review comments; move impl to cpp file for getTimeout, and remove local variable for currentMillis
* remove redundant cast
* need to check for timeout outside the inner while as well
* update WebUpdate example to print something in unexpected callback condition
* update log_e messages per review comments
