ProgressCallback typedef

ProgressCallback = void Function(int count, int total)

The type of a progress listening callback when sending or receiving data.

count is the length of the bytes have been sent/received.

total is the content length of the response/request body.

1. When sending data, total is the request body length.
2. When receiving data, total will be -1 if the size of the response body, typically with no content-length header.

Implementation

typedef ProgressCallback = void Function(int count, int total);