Android MediaPlayer与Http Proxy结合之优化篇
本文来自http://blog.csdn.net/hellogv/ ，引用必须注明出处！
本文是在《玩转 Android MediaPlayer之视频预加载(优化)》基础上修复Http代理服务器(Http Proxy)透传的bug。前面几篇相关文章所用的代理服务器一个时间只能监听来自Mediaplayer的一个Request请求，但在实际项目开发过程中，发现有些支持m3u8格式Mediaplayer发出新的Request请求之前不会中断旧的Request请求，所以本文代码会加入多线程监听Request请求。
本文代码可以在这里下载：http://download.csdn.net/detail/hellogv/4894109
代理服务器被初始化之后，开始2个线程监听MediaPlayer的Request请求：
public HttpGetProxy(String dirPath,int size,int maximum) {
try {
//初始化代理服务器
mBufferDirPath = dirPath;
mBufferSize=size;
mBufferFileMaximum = maximum;
localHost = Config.LOCAL_IP_ADDRESS;
localServer = new ServerSocket(0, 1,InetAddress.getByName(localHost));
localPort =localServer.getLocalPort();//有ServerSocket自动分配端口
//启动代理服务器
new Thread() {
public void run() {
startProxy();
}
}.start();
mEnable = true;
} catch (Exception e) {
mEnable = false;
}
}
private void startProxy() {
while (true) {
// --------------------------------------
// 监听MediaPlayer的请求，MediaPlayer->代理服务器
// --------------------------------------
Log.i(TAG, "......ready to start...........");
try {
Socket s = localServer.accept();
if(proxy!=null){
proxy.closeSockets();
}
Log.i(TAG, "......started...........");
proxy = new Proxy(s);
new Thread(){
public void run(){
Log.i(TAG, "......ready to start...........");
try {
Socket s = localServer.accept();
proxy.closeSockets();
Log.i(TAG, "......started...........");
proxy = new Proxy(s);
proxy.run();
} catch (IOException e) {
Log.e(TAG, e.toString());
Log.e(TAG, Utils.getExceptionMessage(e));
}
}
}.start();
proxy.run();
} catch (IOException e) {
Log.e(TAG, e.toString());
Log.e(TAG, Utils.getExceptionMessage(e));
}
}
}
代理服务器收到Request请求（seek的操作）之后，用新线程建立Socket，而旧的Socket会因为OutputStream的write异常而进入异常处理，所以要在异常处理里回收Socket资源。
本文的代理服务器在mediaplayer seek之后的log如下：
12-16 13:55:53.181: I/HttpParser<---(27624): HTTP/1.1 206 Partial Content 12-16 13:55:53.181: I/HttpParser<---(27624): Content-Length: 665139733 12-16 13:55:53.181: I/HttpParser<---(27624): Content-Type: application/force-download 12-16 13:55:53.181: I/HttpParser<---(27624): Content-Range: bytes 2906976-668046708/668046709 12-16 13:55:53.181: I/HttpParser<---(27624): Last-Modified: Thu, 13 Dec 2012 14:28:00 GMT 12-16 13:55:53.181: I/HttpParser<---(27624): Accept-Ranges: bytes 12-16 13:55:53.181: I/HttpParser<---(27624): ETag: "80b39bd3ed9cd1:2d6" 12-16 13:55:53.181: I/HttpParser<---(27624): Server: Microsoft-IIS/6.0 12-16 13:55:53.181: I/HttpParser<---(27624): Content-Disposition: attachment 12-16 13:55:53.181: I/HttpParser<---(27624): Date: Sun, 16 Dec 2012 05:55:45 GMT 12-16 13:55:53.181: I/HttpParser<---(27624): Connection: close 12-16 13:55:53.181: I/HttpParser<---(27624): 12-16 13:55:59.631: I/HttpGetProxy(27624): ......started........... 12-16 13:55:59.631: I/HttpGetProxy(27624): <-----------------------------------> 12-16 13:55:59.641: I/HttpParser(27624): GET /%E6%89%8B%E6%9C%BA%E7%94%B5%E5%BD%B1/201212/%E5%BF%97%E6%98%8E%E4%B8%8E%E6%98%A5%E5%A8%87-2mp4-800x448.mp4 HTTP/1.1 12-16 13:55:59.641: I/HttpParser(27624): User-Agent: AppleCoreMedia/1.0.0.8C148 (iPad; U; CPU OS 4_2_1 like Mac OS X; zh_cn) 12-16 13:55:59.641: I/HttpParser(27624): Accept: */* 12-16 13:55:59.641: I/HttpParser(27624): Range: bytes=401793617- 12-16 13:55:59.641: I/HttpParser(27624): Connection: close 12-16 13:55:59.641: I/HttpParser(27624): Host: d1.2mp4.net 12-16 13:55:59.641: I/HttpParser(27624): 12-16 13:55:59.641: I/HttpParser(27624): ------->rangePosition:401793617 12-16 13:55:59.641: E/HttpGetProxy(27624): java.net.SocketException: Socket is closed 12-16 13:55:59.641: E/HttpGetProxy(27624): java.net.Socket.checkOpenAndCreate 641line 12-16 13:55:59.641: E/HttpGetProxy(27624): java.net.Socket.getOutputStream 381line 12-16 13:55:59.641: E/HttpGetProxy(27624): com.proxy.HttpGetProxyUtils.sendToMP 112line 12-16 13:55:59.641: E/HttpGetProxy(27624): com.proxy.HttpGetProxy$Proxy.run 292line 12-16 13:55:59.641: E/HttpGetProxy(27624): com.proxy.HttpGetProxy.startProxy 213line 12-16 13:55:59.641: E/HttpGetProxy(27624): com.proxy.HttpGetProxy.access$8 183line 12-16 13:55:59.641: E/HttpGetProxy(27624): com.proxy.HttpGetProxy$1.run 78line 12-16 13:55:59.641: I/HttpGetProxy(27624): ......ready to start........... 12-16 13:56:01.181: I/HttpParser<---(27624): HTTP/1.1 206 Partial Content 12-16 13:56:01.181: I/HttpParser<---(27624): Content-Length: 266253092 12-16 13:56:01.181: I/HttpParser<---(27624): Content-Type: application/force-download 12-16 13:56:01.181: I/HttpParser<---(27624): Content-Range: bytes 401793617-668046708/668046709 12-16 13:56:01.181: I/HttpParser<---(27624): Last-Modified: Thu, 13 Dec 2012 14:28:00 GMT 12-16 13:56:01.181: I/HttpParser<---(27624): Accept-Ranges: bytes 12-16 13:56:01.181: I/HttpParser<---(27624): ETag: "80b39bd3ed9cd1:2d6" 12-16 13:56:01.181: I/HttpParser<---(27624): Server: Microsoft-IIS/6.0 12-16 13:56:01.181: I/HttpParser<---(27624): Content-Disposition: attachment 12-16 13:56:01.181: I/HttpParser<---(27624): Date: Sun, 16 Dec 2012 05:55:54 GMT 12-16 13:56:01.181: I/HttpParser<---(27624): Connection: close 12-16 13:56:01.181: I/HttpParser<---(27624): 12-16 13:56:01.181: I/HttpGetProxy(27624): ----------------->需要发送预加载到MediaPlayer 12-16 13:56:01.181: I/HttpGetProxy(27624): >>>不读取预加载文件 range:401793617,buffer:2906976 12-16 13:56:13.761: E/HttpGetProxy(27624): java.net.SocketException: sendto failed: ECONNRESET (Connection reset by peer) 12-16 13:56:13.761: E/HttpGetProxy(27624): libcore.io.IoBridge.maybeThrowAfterSendto 496line 12-16 13:56:13.761: E/HttpGetProxy(27624): libcore.io.IoBridge.sendto 465line 12-16 13:56:13.761: E/HttpGetProxy(27624): java.net.PlainSocketImpl.write 507line 12-16 13:56:13.761: E/HttpGetProxy(27624): java.net.PlainSocketImpl.access$100 46line 12-16 13:56:13.761: E/HttpGetProxy(27624): java.net.PlainSocketImpl$PlainSocketOutputStream.write 269line 12-16 13:56:13.761: E/HttpGetProxy(27624): com.proxy.HttpGetProxyUtils.sendToMP 112line 12-16 13:56:13.761: E/HttpGetProxy(27624): com.proxy.HttpGetProxy$Proxy.run 292line 12-16 13:56:13.761: E/HttpGetProxy(27624): com.proxy.HttpGetProxy$2.run 205line 12-16 13:56:13.771: I/HttpGetProxy(27624): ......started........... 12-16 13:56:13.771: I/HttpGetProxy(27624): <-----------------------------------> 12-16 13:56:13.771: I/HttpParser(27624): GET /%E6%89%8B%E6%9C%BA%E7%94%B5%E5%BD%B1/201212/%E5%BF%97%E6%98%8E%E4%B8%8E%E6%98%A5%E5%A8%87-2mp4-800x448.mp4 HTTP/1.1 12-16 13:56:13.771: I/HttpParser(27624): User-Agent: AppleCoreMedia/1.0.0.8C148 (iPad; U; CPU OS 4_2_1 like Mac OS X; zh_cn) 12-16 13:56:13.771: I/HttpParser(27624): Accept: */* 12-16 13:56:13.771: I/HttpParser(27624): Range: bytes=612718942- 12-16 13:56:13.771: I/HttpParser(27624): Connection: close 12-16 13:56:13.771: I/HttpParser(27624): Host: d1.2mp4.net 12-16 13:56:13.771: I/HttpParser(27624): 12-16 13:56:13.771: I/HttpParser(27624): ------->rangePosition:612718942 12-16 13:56:13.781: I/HttpGetProxy(27624): ......ready to start........... 12-16 13:56:14.051: I/HttpParser<---(27624): HTTP/1.1 206 Partial Content 12-16 13:56:14.051: I/HttpParser<---(27624): Content-Length: 55327767 12-16 13:56:14.051: I/HttpParser<---(27624): Content-Type: application/force-download 12-16 13:56:14.051: I/HttpParser<---(27624): Content-Range: bytes 612718942-668046708/668046709 12-16 13:56:14.051: I/HttpParser<---(27624): Last-Modified: Thu, 13 Dec 2012 14:28:00 GMT 12-16 13:56:14.051: I/HttpParser<---(27624): Accept-Ranges: bytes 12-16 13:56:14.051: I/HttpParser<---(27624): ETag: "80b39bd3ed9cd1:2d6" 12-16 13:56:14.051: I/HttpParser<---(27624): Server: Microsoft-IIS/6.0 12-16 13:56:14.051: I/HttpParser<---(27624): Content-Disposition: attachment 12-16 13:56:14.051: I/HttpParser<---(27624): Date: Sun, 16 Dec 2012 05:56:06 GMT 12-16 13:56:14.051: I/HttpParser<---(27624): Connection: close 12-16 13:56:14.051: I/HttpParser<---(27624): 12-16 13:56:14.051: I/HttpGetProxy(27624): ----------------->需要发送预加载到MediaPlayer 12-16 13:56:14.051: I/HttpGetProxy(27624): >>>不读取预加载文件 range:612718942,buffer:2906976 12-16 13:56:49.051: I/HttpGetProxy(27624): ......started........... 12-16 13:56:49.051: I/HttpGetProxy(27624): <-----------------------------------> 12-16 13:56:49.051: E/HttpGetProxy(27624): java.net.SocketException: Socket closed 12-16 13:56:49.051: E/HttpGetProxy(27624): libcore.io.Posix.recvfromBytes -2line 12-16 13:56:49.051: E/HttpGetProxy(27624): libcore.io.Posix.recvfrom 131line 12-16 13:56:49.051: E/HttpGetProxy(27624): libcore.io.BlockGuardOs.recvfrom 164line 12-16 13:56:49.051: E/HttpGetProxy(27624): libcore.io.IoBridge.recvfrom 503line 12-16 13:56:49.051: E/HttpGetProxy(27624): java.net.PlainSocketImpl.read 488line 12-16 13:56:49.051: E/HttpGetProxy(27624): java.net.PlainSocketImpl.access$000 46line 12-16 13:56:49.051: E/HttpGetProxy(27624): java.net.PlainSocketImpl$PlainSocketInputStream.read 240line 12-16 13:56:49.051: E/HttpGetProxy(27624): java.io.InputStream.read 163line 12-16 13:56:49.051: E/HttpGetProxy(27624): com.proxy.HttpGetProxy$Proxy.run 288line 12-16 13:56:49.051: E/HttpGetProxy(27624): com.proxy.HttpGetProxy.startProxy 213line 12-16 13:56:49.051: E/HttpGetProxy(27624): com.proxy.HttpGetProxy.access$8 183line 12-16 13:56:49.051: E/HttpGetProxy(27624): com.proxy.HttpGetProxy$1.run 78line 12-16 13:56:49.051: I/HttpGetProxy(27624): ......ready to start........... 12-16 13:56:49.051: I/HttpParser(27624): GET /%E6%89%8B%E6%9C%BA%E7%94%B5%E5%BD%B1/201212/%E5%BF%97%E6%98%8E%E4%B8%8E%E6%98%A5%E5%A8%87-2mp4-800x448.mp4 HTTP/1.1 12-16 13:56:49.051: I/HttpParser(27624): User-Agent: AppleCoreMedia/1.0.0.8C148 (iPad; U; CPU OS 4_2_1 like Mac OS X; zh_cn) 12-16 13:56:49.051: I/HttpParser(27624): Accept: */* 12-16 13:56:49.051: I/HttpParser(27624): Range: bytes=152226030- 12-16 13:56:49.051: I/HttpParser(27624): Connection: close 12-16 13:56:49.051: I/HttpParser(27624): Host: d1.2mp4.net 12-16 13:56:49.051: I/HttpParser(27624): 12-16 13:56:49.051: I/HttpParser(27624): ------->rangePosition:152226030 12-16 13:56:49.311: I/HttpParser<---(27624): HTTP/1.1 206 Partial Content 12-16 13:56:49.311: I/HttpParser<---(27624): Content-Length: 515820679 12-16 13:56:49.311: I/HttpParser<---(27624): Content-Type: application/force-download 12-16 13:56:49.311: I/HttpParser<---(27624): Content-Range: bytes 152226030-668046708/668046709 12-16 13:56:49.311: I/HttpParser<---(27624): Last-Modified: Thu, 13 Dec 2012 14:28:00 GMT 12-16 13:56:49.311: I/HttpParser<---(27624): Accept-Ranges: bytes 12-16 13:56:49.311: I/HttpParser<---(27624): ETag: "80b39bd3ed9cd1:2d6" 12-16 13:56:49.311: I/HttpParser<---(27624): Server: Microsoft-IIS/6.0 12-16 13:56:49.311: I/HttpParser<---(27624): Content-Disposition: attachment 12-16 13:56:49.311: I/HttpParser<---(27624): Date: Sun, 16 Dec 2012 05:56:42 GMT 12-16 13:56:49.311: I/HttpParser<---(27624): Connection: close 12-16 13:56:49.311: I/HttpParser<---(27624): 12-16 13:56:49.311: I/HttpGetProxy(27624): ----------------->需要发送预加载到MediaPlayer 12-16 13:56:49.311: I/HttpGetProxy(27624): >>>不读取预加载文件 range:152226030,buffer:2906976