/**
* Read data from the protocol.
* If data is immediately available (even less than size), EOF is
- * reached or an error occurs (including EINTR), return immediately,
+ * reached or an error occurs (including EINTR), return immediately.
* Otherwise:
* In non-blocking mode, return AVERROR(EAGAIN) immediately.
* In blocking mode, wait for data/EOF/error with a short timeout (0.1s),