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Handle stream timeouts properly, for slow HTTP/HTTPS links (#3752)

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This patch fixes update timeouts (error #6) on slow HTTP/HTTPS links.
This commit is contained in:
Denys Fedoryshchenko 2020-11-02 22:01:27 +02:00 committed by GitHub
parent 76afaf2d6b
commit e4b008e712
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 18 additions and 7 deletions
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25
libraries/Update/src/Updater.cpp
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@ -323,6 +323,8 @@ size_t UpdateClass::write(uint8_t *data, size_t len) {
size_t UpdateClass::writeStream(Stream &data) {
size_t written = 0;
size_t toRead = 0;
int timeout_failures = 0;
if(hasError() || !isRunning())
return 0;
@ -344,15 +346,24 @@ size_t UpdateClass::writeStream(Stream &data) {
bytesToRead = remaining();
}
toRead = data.readBytes(_buffer + _bufferLen, bytesToRead);
if(toRead == 0) { //Timeout
delay(100);
toRead = data.readBytes(_buffer + _bufferLen, bytesToRead);
if(toRead == 0) { //Timeout
_abort(UPDATE_ERROR_STREAM);
return written;
/*
Init read&timeout counters and try to read, if read failed, increase counter,
wait 100ms and try to read again. If counter > 300 (30 sec), give up/abort
*/
toRead = 0;
timeout_failures = 0;
while(!toRead) {
toRead = data.readBytes(_buffer + _bufferLen, bytesToRead);
if(toRead == 0) {
timeout_failures++;
if (timeout_failures >= 300) {
_abort(UPDATE_ERROR_STREAM);
return written;
}
delay(100);
}
}
if(_ledPin != -1) {
digitalWrite(_ledPin, !_ledOn); // Switch LED off
}