android http server播放直播码流分析

android 下载码流到本地，然后开启http server 提供码流下载服务，client的http请求报文分析：

1.http service 从服务获取ts码流切片，并保持到本地的过程：（推测，有待确认）

比如提供http://127.0.0.1:9906/12345.ts URL直播下载。

下载服务器的ts码流切片，写到12345.ts文件中。

估计是一个循环的文件，写到一定的大小，把前面的部分用新的ts流覆盖。用虚拟的文件来管理，虚拟文件的大小不断在增加，不断提供虚拟文件position靠后的ts内容给client。

我之前做的PVR就是用这种原理来做。

2. client 通过http server获取ts流的过程：

http request 头中的Range 字段为 0-，意思是获取整个文件大小。

http response头没有反馈返回的文件大小，就不断地将文件发送至client，在同一个http 长连接中发送ts流给client

GET /12345.ts HTTP/1.1

Host: 10.69.19.220:9906

User-Agent: VLC/2.1.3 LibVLC/2.1.3

Range: bytes=0-

Connection: close

Icy-MetaData: 1

HTTP/1.1 200 OK

Accept-Ranges: bytes

Cache-Control: no-cache

Content-Type: application/octet-stream

Date: Thu, 26 Jun 2014 07:28:09 GMT

Server: Microsoft-IIS/5.0

G......}..P:....@sEJ.............2unL.&.=..,EZ.T#..

*....../M...tzz.P....b..@..t.1....#u...:.G......v.....C/H..N.HI..U...q.

以下转自：/article/1363058.html

Android MediaPlayer与Http Proxy结合之基础篇

本文来自http://blog.csdn.net/hellogv/ ，引用必须注明出处！

最近半年都忙着Android TV项目，在春节假期才有时间写点东西。先在这里给大家拜个年，祝大家龙年快乐...

直接进入主题：本文将会教大家如何实现一个简单的代理服务器(仅支持Http Get)，与Android的MediaPlayer结合，从而可以扩展出“播放 防盗链的媒体文件”，“边播放边保存”等的功能。

本文的代码可以到这里下载：http://download.csdn.net/detail/hellogv/4047134，代码分为两个工程：

J2SE工程：HttpGetProxy，在PC上实现简单的代理服务器，核心类是HttpGetProxy.java，非常容易使用，这里就不唠叨了直接贴出运行效果图：


Android工程：本文重点，必须唠叨一下。MediaPlayer播放网络音频（/article/1363064.html）与HttpGetProxy.java结合，通过代理服务器播放网络音频。

接下来贴出HttpGetProxy.java的原理图：



接下来贴出HttpGetProxy.java的源码：

通过RemoteSocket的out_remoteSocket可以访问防盗链资源，HttpGetProxy通过2个线程来实现转发，可以在两个线程内实现保存的功能。

[java] view
plaincopyprint?

<span style="font-family:Comic Sans MS;font-size:18px;">package com.musicplayer;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.net.InetAddress;

import java.net.InetSocketAddress;

import java.net.ServerSocket;

import java.net.Socket;

import java.net.SocketAddress;

import java.net.UnknownHostException;

import android.util.Log;

public class HttpGetProxy {

final private String LOCAL_IP_ADDRESS = "127.0.0.1";

final private int HTTP_PORT = 80;

private ServerSocket localServer = null;

private Socket localSocket = null;

private Socket remoteSocket = null;

private String remoteIPAddress;

private InputStream in_remoteSocket;

private OutputStream out_remoteSocket;

private InputStream in_localSocket;

private OutputStream out_localSocket;

private interface OnFinishListener {

void onFinishListener();

}

public HttpGetProxy(int localport) {

// --------建立代理中转服务器-----------//

try {

localServer = new ServerSocket(localport, 1,

InetAddress.getByName(LOCAL_IP_ADDRESS));

} catch (UnknownHostException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

/**

* 结束时，清除所有资源

*/

private OnFinishListener finishListener =new OnFinishListener(){

@Override

public void onFinishListener() {

System.out.println("..........release all..........");

Log.e("---->","..........release all..........");

try {

in_localSocket.close();

out_remoteSocket.close();

in_remoteSocket.close();

out_localSocket.close();

localSocket.close();

remoteSocket.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

};

public void startProxy(String remoteIpAddr) throws IOException {

remoteIPAddress = remoteIpAddr;

SocketAddress address = new InetSocketAddress(remoteIPAddress,HTTP_PORT);

// --------连接目标服务器---------//

remoteSocket = new Socket();

remoteSocket.connect(address);

System.out.println("..........remote Server connected..........");

Log.e("---->","..........remote Server connected..........");

in_remoteSocket = remoteSocket.getInputStream();

out_remoteSocket = remoteSocket.getOutputStream();

System.out.println("..........init remote Server I/O..........");

/**

* 接收本地request，并转发到远程服务器

*/

new Thread() {

public void run() {

int bytes_read;

byte[] local_request = new byte[5120];

try {

// 本地Socket

localSocket = localServer.accept();

System.out.println("..........localSocket connected..........");

Log.e("---->","..........localSocket connected..........");

in_localSocket = localSocket.getInputStream();

out_localSocket = localSocket.getOutputStream();

System.out.println("..........init local Socket I/O..........");

Log.e("---->","..........init local Socket I/O..........");

String buffer = "";

while ((bytes_read = in_localSocket.read(local_request)) != -1) {

String str = new String(local_request);

System.out.println("localSocket " + str);

Log.e("localSocket---->",str);

buffer = buffer + str;

if (buffer.contains("GET")

&& buffer.contains("\r\n\r\n")) {

//---把request中的本地ip改为远程ip---//

buffer = buffer.replace(LOCAL_IP_ADDRESS,remoteIPAddress);

System.out.println("已经替换IP");

out_remoteSocket.write(buffer.getBytes());

out_remoteSocket.flush();

continue;

} else{

out_remoteSocket.write(buffer.getBytes());

out_remoteSocket.flush();

}

}

System.out.println("..........local finish receive...........");

Log.e("---->","..........local finish receive..........");

finishListener.onFinishListener();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}.start();

/**

* 接收远程服务器reply，并转发到本地客户端

*/

new Thread() {

public void run() {

int bytes_read;

byte[] remote_reply = new byte[5120];

try {

System.out.println("..........remote start to receive...........");

Log.e("---->","..........remote start to receive..........");

while ((bytes_read = in_remoteSocket.read(remote_reply)) != -1) {

//System.out.println("remoteSocket " + remote_reply.length);

//System.out.println("remoteSocket " + new String(remote_reply));

out_localSocket.write(remote_reply, 0, bytes_read);

out_localSocket.flush();

}

System.out.println("..........remote finish receive...........");

Log.e("---->","..........remote finish receive..........");

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}.start();

}

}

</span>