HTTP high speed downloader

中文
Using java NIO(netty),fast down and easy to customize.

Guide

Create download task

To create a download task, need to construct a request and a config.

Request

Build a HTTP request.

Method

The default method is GET,We can also use POST,PUT...

Heads

The default request header refers to the following table.

key	value
Host	{host}
Connection	keep-alive
User-Agent	Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.75 Safari/537.36
Accept	text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,/;q=0.8
Referer	{host}

We can customize the request header,when overriding the default value, the default request header will be replaced.
{host}:is Domain name parsed from url

Content

Set the request body,only support text format.

Response

Default will request once for response related information,such as support HTTP 206,Content-Length,attach name.
If know response Content-Length and name,can create a task directly, without spending a request to resolve the task name and size.

Option

Download options.

field	default	desc
filePath	{root}	Saved path
fileName	{name}	Saved file name
totalSize	0(B)	The total size of the file to be downloaded
supportRange	false	Does the server support Accept-Ranges
connections	16	Concurrent connections
timeout	30(S)	If no response during this time,will re-initiate connection.
retryCount	5	All connection download exceptions exceed this times,will be stop download.
autoRename	false	Automatic rename when checking to download directory with duplicate file.
speedLimit	0(B/S)	Download speed limit.

Demo

//Download a file with URL
HttpDownBootstrap.builder("http://127.0.0.1/static/test.zip")
          .build()
          .start();
//Download a file with a custom request and response
HttpDownBootstrap.builder()
          .request(new HttpRequestInfo(HttpMethod.GET, "http://127.0.0.1/static/test.zip"))
          .response(new HttpResponseInfo(2048,true))
          .build()
          .start();
//Set download option
HttpDownBootstrap.builder("http://127.0.0.1/static/test.zip")
          .downConfig(new HttpDownConfigInfo().setConnections(32).setAutoRename(true).setSpeedLimit(1024*1024*5L))
          .build()
          .start();
//Set proxy config
HttpDownBootstrap.builder("http://127.0.0.1/static/test.zip")
          .proxyConfig(new ProxyConfig(ProxyType.HTTP,"127.0.0.1",8888))
          .build()
          .start();
//Set callback
HttpDownBootstrap.builder("http://127.0.0.1/static/test.zip")
          .callback(new ConsoleHttpDownCallback())
          .build()
          .start();

Build

git clone [email protected]:proxyee-down-org/pdown-core.git
cd pdown-core
mvn clean package -Dmaven.test.skip=true -Pexec

Run

#See help
java -jar pdown.jar -h
#Download with default configuration
java -jar pdown.jar "http://127.0.0.1/static/test.zip"