com.liulishuo.filedownloader.util

Interface FileDownloadHelper.ConnectionCountAdapter

All Known Implementing Classes:

DefaultConnectionCountAdapter

Enclosing class:

FileDownloadHelper

public static interface FileDownloadHelper.ConnectionCountAdapter

Method Summary

Modifier and Type	Method and Description
int	determineConnectionCount(int downloadId, java.lang.String url, java.lang.String path, long totalLength) Before invoke this method to determine how many connection will be used to downloading this task, there are several conditions must be confirmed:

Method Detail

determineConnectionCount

int determineConnectionCount(int downloadId,
                             java.lang.String url,
                             java.lang.String path,
                             long totalLength)

Before invoke this method to determine how many connection will be used to downloading this task, there are several conditions must be confirmed:

1. the connection is support multiple connection(SUPPORT"Partial Content(206)" AND NOT Chunked) 2. the current FileDownloadOutputStream support seek(The default one(FileDownloadRandomAccessFile is support) 3. this is a new task NOT resume from breakpoint( If the task resume from breakpoint the connection count would be using the one you determined when the task first created ).

The best strategy is refer to how much speed of each connection for the ip:port not file size.

Parameters:

downloadId - the download id.

url - the task url.

path - the task path.

totalLength - the total length of the file.

Returns:

the count of connection you want for the task. the value must be large than 0.