```
public interface B2ByteProgressListener
```
This listener is called as data is read from an input stream. It is called synchronously before the caller receives the data from the stream. (1) keep in mind that the time you spend listening is directly slowing down the processing of the stream. (2) keep in mind that you're learning about things before the stream's caller. In particular, if you're using this as a proxy for the amount of data that's been sent to server, remember that it's not really a measure of that. Many things can happen before the data is sent (and being sent isn't the same as being processed by the server!). Higher-level indications (like receiving the response from the server) are better indications that the server has processed your data!

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`hitException(java.lang.Exception e, long nBytesSoFar)`	Called right before the exception propagates to the caller.
`void`	`progress(long nBytesSoFar)`	Called right before returning bytes to the caller.
`void`	`reachedEof(long nBytesSoFar)`	Called right before the caller learns that we've hit the end of the stream.

Interface B2ByteProgressListener