我整天都在努力使用 DatagramSocket 和 DatagramPacket 通过本地服务器读取音频文件 (mp3)。这是代码和错误日志：
客户端
OutputStream out = client.getOutputStream();
...
// after receiving the datapacket => I'm trying to write it to a Http socket
// which is not working
udpSocket.receive(dataPacket);
http_outputStream.write(dataPacket.getData(),dataPacket.getOffset(),
dataPacket.getLength());
我对处理音频/视频文件的功能有些怀疑，因为当尝试从服务器向客户端发送一些文本时，一切都很好。我在用着 ：
服务器端
File audio = new File(Environment.getExternalStorageDirectory()+File.separator, "bob.mp3");
FileInputStream is = new FileInputStream(audio);
is.read(buf);
DatagramSocket socket = new DatagramSocket();
DatagramPacket out = new DatagramPacket(buf, buf.length, hostAddress, UDP_PORT);
socket.send(out);
日志 ：
4-10 17:26:25.943 I/amplayer( 2307): [parse_sysparam_str]j=0 vc1: start:17 end:39
04-10 17:26:25.943 I/amplayer( 2307): [vc1 profile] progress:1; interlace:0; wmv1:0; wmv2:0; wmv3:1
04-10 17:26:25.943 I/amplayer( 2307): [parse_sysparam_str]j=1 h264: start:40 end:46
04-10 17:26:25.943 I/amplayer( 2307): [parse_sysparam_str]j=2 real: start:55 end:66
04-10 17:26:25.943 I/amplayer( 2307): [parse_sysparam_str]j=3 mpeg12: start:0 end:8
04-10 17:26:25.943 I/amplayer( 2307): [parse_sysparam_str]j=4 mpeg4: start:9 end:16
04-10 17:26:25.943 I/amplayer( 2307): [parse_sysparam_str]j=5 mjpeg: start:47 end:54
04-10 17:26:25.943 I/amplayer( 2307): pid[8]::Init State: mute_on=0 black=1 t_pos:1074475459s read_max_cnt=0
04-10 17:26:25.943 I/amplayer( 2307): file::::[shttp://127.0.0.1:1666/],len=23
04-10 17:26:26.003 I/ActivityManager( 3241): Displayed com.example.server/.MainActivity: +858ms
04-10 17:26:26.043 I/VideoView( 4440): Layout changed,left=202 top=100 right=642 bottom=417
04-10 17:26:26.043 I/VideoView( 4440): Layout changed,oldLeft=202 oldTop=100 oldRight=642 oldBottom=417
04-10 17:26:26.043 I/VideoView( 4440): .left=202.top=100.right=642.bottom=417.oldLeft=202.oldTop=100.oldRight=642.oldBottom=417.Rotati on=0
04-10 17:26:26.043 I/amplayer( 2307): **[update_state]pid:8 status=BEGIN_INIT(last:UNKNOW_STATE) err=0x0 curtime=0 (ms:0) fulltime=0 lsttime=0
04-10 17:26:26.043 I/amplayer( 2307): **[update_state]abuflevel=0.000 vbublevel=0.000 abufrp=0 vbufrp=0 read_end=0
04-10 17:26:26.043 V/AmlogicPlayer( 2307): update_process pid=8, current=0,status= [BEGIN_INIT]
04-10 17:26:26.043 V/AmlogicPlayer( 2307): Playing percent =0,mPlayTime:0,mStreamTime:0
04-10 17:26:26.043 V/AmSuperPlayer( 2307): [notify::405]
04-10 17:26:26.043 V/AmSuperPlayer( 2307): [Notify::412]
04-10 17:26:26.043 V/AmSuperPlayer( 2307): cookie=0x46970,msg=3,ext1=0,ext2=0
04-10 17:26:26.043 I/amffmpeg( 2307): [tcp @ 0x44a40] TCP connect to 127.0.0.1 port 1666
04-10 17:26:26.043 I/amffmpeg( 2307): HTTP[GET / HTTP/1.1
04-10 17:26:26.043 I/amffmpeg( 2307): User-Agent: AppleCoreMedia/1.0.0.8C148 (iPad; U; CPU OS 4_2_1 like Mac OS X; zh_cn)
04-10 17:26:26.043 I/amffmpeg( 2307): Accept: */*
04-10 17:26:26.043 I/amffmpeg( 2307): Range: bytes=0-
04-10 17:26:26.043 I/amffmpeg( 2307): Connection: close
04-10 17:26:26.043 I/amffmpeg( 2307): Host: 127.0.0.1:1666
04-10 17:26:26.043 I/amffmpeg( 2307):
04-10 17:26:26.043 I/amffmpeg( 2307): ]
04-10 17:26:26.043 I/amffmpeg( 2307): [shttp @ 0x4c1b0] process_line:HTTP/1.1 200 OK
04-10 17:26:26.043 I/amffmpeg( 2307): [shttp @ 0x4c1b0] process_line:Content-Type: audio/mp3
04-10 17:26:26.043 I/amffmpeg( 2307): [shttp @ 0x4c1b0] process_line:Connection: keep- alive
04-10 17:26:26.043 I/amffmpeg( 2307): [shttp @ 0x4c1b0] process_line:
04-10 17:26:26.043 I/amffmpeg( 2307): getloopbuf size=4000000
04-10 17:26:26.043 I/amffmpeg( 2307): ffio_fdopen (h->is_slowmedia=1,flags=1
04-10 17:26:26.043 I/amffmpeg( 2307): lpbuffer block size=32768
04-10 17:26:26.043 I/amffmpeg( 2307): url_lpopen used lp buf size=67108864
04-10 17:26:26.043 I/amffmpeg( 2307): url_lpseek:offset=0 whence=65536,buffer=47968020,rp=47968020,wp=47968020,end=4b968020,pos=0
04-10 17:26:26.043 I/amffmpeg( 2307): ffio_fdopen Register lpbuf
04-10 17:26:26.043 I/amffmpeg( 2307): auto_switch_protol_t:list::
04-10 17:26:26.053 V/MediaPlayerService( 2307): [103] setParameter(2000)
04-10 17:26:26.053 V/AmSuperPlayer( 2307): [setParameter::352]
04-10 17:26:26.213 I/amffmpeg( 2307): m3u_format_get_line line 4=ID3?
04-10 17:26:26.213 I/amffmpeg( 2307): auto_switch_protol_t:nsc::
04-10 17:26:26.213 I/amffmpeg( 2307): is_ncs_file check lineID3? ret=4
04-10 17:26:26.213 I/amffmpeg( 2307): is_ncs_file check line ret=0
04-10 17:26:26.213 I/amffmpeg( 2307): is_ncs_file=0
04-10 17:26:32.483 I/ActivityManager( 3241): No longer want com.android.keychain (pid 4406): hidden #16
04-10 17:26:32.483 I/ActivityManager( 3241): No longer want com.anttek.clockwiget (pid 3064): hidden #17
04-10 17:26:32.493 W/ActivityManager( 3241): Scheduling restart of crashed service com.anttek.clockwiget/.service.LocationService in 5000ms
04-10 17:26:32.513 I/amplayer( 2307): [ffmpeg_open_file] file=shttp://127.0.0.1:1666/,header=
04-10 17:26:32.513 I/amplayer( 2307): ffmpeg error: Couldn't open input file! ret==bebbb1b7
04-10 17:26:32.513 I/amplayer( 2307): [player_dec_init]ffmpeg_open_file failed(shttp://127.0.0.1:1666/)*****ret=fcffffff!
04-10 17:26:32.513 I/amplayer( 2307):
04-10 17:26:32.513 I/amplayer( 2307): pid[8]player_thread release0 begin...(sta:0x30001)
04-10 17:26:32.513 I/amplayer( 2307): [get_pts_video]No codec handler
04-10 17:26:32.513 I/amplayer( 2307): **[update_state]pid:8 status=ERROR(last:BEGIN_INIT) err=0x3000001 curtime=0 (ms:0) fulltime=0 lsttime=0
04-10 17:26:32.513 I/amplayer( 2307): **[update_state]abuflevel=0.000 vbublevel=0.000 abufrp=0 vbufrp=0 read_end=0
04-10 17:26:32.513 V/AmlogicPlayer( 2307): update_process pid=8, current=0,status=[ERROR]
04-10 17:26:32.513 V/AmSuperPlayer( 2307): [notify::405]
04-10 17:26:32.513 V/AmSuperPlayer( 2307): [Notify::412]
04-10 17:26:32.513 V/AmSuperPlayer( 2307): cookie=0x46970,msg=64,ext1=1,ext2=fcffffff
04-10 17:26:32.523 V/AmSuperPlayer( 2307): [CreatePlayer::703]
04-10 17:26:32.523 I/AmSuperPlayer( 2307): media.amplayer.enable is enabled
04-10 17:26:32.523 I/AmSuperPlayer( 2307): media.stagefright.enable-player is disabled
04-10 17:26:32.523 V/AmSuperPlayer( 2307): [CreatePlayer::714]
04-10 17:26:32.523 V/AmSuperPlayer( 2307): Need to creat new player=3
04-10 17:26:32.523 V/AmlogicPlayer( 2307): stop
04-10 17:26:32.523 D/HTTP !!!( 4440): ERROR !!!
04-10 17:26:32.523 I/amplayer( 2307): [player_stop:enter]pid=8
04-10 17:26:32.523 I/amplayer( 2307): [player_stop]player_status=30001
04-10 17:26:32.523 I/amplayer( 2307): [player_stop]pid=8 thread is already stopped
04-10 17:26:32.523 D/#hello# ( 4440): nothing => just ending !!!!!
04-10 17:26:32.523 V/AmlogicPlayer( 2307): AmlogicPlayer destructor
04-10 17:26:32.523 V/AmlogicPlayer( 2307): release
04-10 17:26:32.523 V/AmlogicPlayer( 2307): [release::1499]
04-10 17:26:32.523 I/amplayer( 2307): [player_stop:enter]pid=8
04-10 17:26:32.523 I/amplayer( 2307): [player_stop]player_status=30001
04-10 17:26:32.523 I/amplayer( 2307): [player_stop]pid=8 thread is already stopped
04-10 17:26:32.523 I/amplayer( 2307): [player_exit:enter]pid=8
04-10 17:26:32.523 I/amplayer( 2307): [player_exit]player_state=0x30001
04-10 17:26:32.523 I/amplayer( 2307): [player_stop:enter]pid=8
04-10 17:26:32.523 I/amplayer( 2307): [player_stop]player_status=30001
04-10 17:26:32.523 I/amplayer( 2307): [player_stop]pid=8 thread is already stopped
04-10 17:26:32.523 I/amplayer( 2307): [player_thread_wait_exit:80]pid=[8] thead_id=427752
04-10 17:26:32.523 V/AmlogicPlayer( 2307): Player status:ERROR, error occur
04-10 17:26:32.523 V/AmSuperPlayer( 2307): [notify::405]
04-10 17:26:32.523 V/AmSuperPlayer( 2307): [Notify::412]
04-10 17:26:32.523 V/AmSuperPlayer( 2307): cookie=0x46970,msg=64,ext1=1,ext2=ffffffff
04-10 17:26:32.523 I/amplayer( 2307): **[update_state]pid:8 status=EXIT(last:ERROR) err=0x0 curtime=0 (ms:0) fulltime=0 lsttime=0
04-10 17:26:32.523 I/amplayer( 2307): **[update_state]abuflevel=0.000 vbublevel=0.000 abufrp=0 vbufrp=0 read_end=0
04-10 17:26:32.523 V/AmlogicPlayer( 2307): update_process pid=8, current=0,status=[EXIT]
04-10 17:26:32.523 V/AmlogicPlayer( 2307): Player status:EXIT, playback exit
04-10 17:26:32.523 I/amplayer( 2307):
04-10 17:26:32.523 I/amplayer( 2307): pid[8]::stop play, exit player thead!(sta:0x30004)
04-10 17:26:32.523 I/amplayer( 2307): [player_thread_wait_exit:86]thead_id=427752 returning
04-10 17:26:32.523 I/amplayer( 2307): [player_exit]player thread already exit: 0
04-10 17:26:32.523 I/amplayer( 2307): [player_release_pid:72]release pid=8
04-10 17:26:32.523 I/amplayer( 2307): [player_exit:exit]pid=8
04-10 17:26:32.523 I/amplayer( 2307): [get_display_mode]mode=panel
04-10 17:26:32.523 I/amplayer( 2307):
04-10 17:26:32.523 I/amplayer( 2307): strlen=7
04-10 17:26:32.523 I/amplayer( 2307): [get_display_mode]display_mode=panel
04-10 17:26:32.523 I/amplayer( 2307):
04-10 17:26:32.523 I/amplayer( 2307):
04-10 17:26:32.523 I/amplayer( 2307): [display_mode_convert]disp_mode=panel
04-10 17:26:32.523 I/amplayer( 2307):
04-10 17:26:32.523 I/amplayer( 2307):
04-10 17:26:32.523 I/amplayer( 2307): [display_mode_convert]disp_mode=panel
04-10 17:26:32.523 I/amplayer( 2307):
04-10 17:26:32.523 I/amplayer( 2307): -->ffff
04-10 17:26:32.523 I/amplayer( 2307): [enable_freescale]
04-10 17:26:32.523 V/AmlogicPlayer( 2307): VideoViewClose=0
04-10 17:26:32.523 V/AmlogicPlayer( 2307): [release::1509]
04-10 17:26:32.523 V/AmlogicPlayer( 2307): History mgt old[shttp://127.0.0.1:1666/,0,0]
04-10 17:26:32.523 V/AmlogicPlayer( 2307): History mgt [shttp://127.0.0.1:1666/,1,0]
04-10 17:26:32.523 V/AmSuperPlayer( 2307): createPlayer
04-10 17:26:32.523 V/AmSuperPlayer( 2307): create StagefrightPlayer
04-10 17:26:32.523 V/AmSuperPlayer( 2307): [CreatePlayer::679]
04-10 17:26:32.523 I/AwesomePlayer( 2307): setDataSource_l('http://127.0.0.1:1666/')
04-10 17:26:32.523 V/AmSuperPlayer( 2307): [CreatePlayer::714]
04-10 17:26:32.523 V/AmSuperPlayer( 2307): [CreatePlayer::730]
04-10 17:26:32.523 V/AmSuperPlayer( 2307): Start new player now=3
04-10 17:26:32.523 V/AmSuperPlayer( 2307): [initThread::763]
04-10 17:26:32.523 V/ChromiumHTTPDataSource( 2307): connect on behalf of uid 0
04-10 17:26:32.523 I/ChromiumHTTPDataSource( 2307): connect to http://127.0.0.1:1666/ @0
我感谢您的帮助。
编辑：我忘了提到“服务器”类代码每次将“mp3-data”发送到客户端的同一端口时都使用不同的端口。这个可以吗 ？