问题描述
我创建了一个小小的Android App，它会使用ExoPlayer向用户显示一些视频文件（.mp4）。 .mp4文件均从我的笔记本电脑Django上的本地开发服务器获取。具体来说，我使用Django Rest Framework创建了一个小小的客户端-服务器关系，以便可以交换文件。
用户选择视频时，ExoPlayer负责播放视频。其背后的逻辑是：
// called from onResume()
private fun initializeMainVideoPlayer(){
// initialize our SimpleExoPlayer instance as usual
mainVideoplayer = ExoPlayerFactory.newSimpleInstance(context)
// assign the player to the corresponding UI widget (com.google.android.exoplayer2.ui.PlayerView)
binding.detailedplayerView.player = mainVideoplayer
// get the url of the file from navArgs passed to the fragment
val uri: Uri = Uri.parse(args.fileUrl)
// use the Uri of the url to create a MediaSource
val mediaSource : MediaSource = buildMediaSource(uri)
// set some properties of the player & prepare it for playing
mainVideoplayer?.apply {
playWhenReady = true // play automatically
repeatMode = Player.REPEAT_MODE_ONE // let it loop endlessly
prepare(mediaSource,false,false)
}
}
// creates the MediaSource object used for the prepare() call
private fun buildMediaSource(uri: Uri): MediaSource =
ProgressiveMediaSource.Factory(DefaultDataSourceFactory(context,"exoplayer")).createMediaSource(uri)
我认为这是非常基本的。现在，一旦应用程序获取了文件数据，视频就会开始播放（请注意playWhenReady = true），并在我的命令行上，我可以观察到很多GET requests到本地服务器，然后是ConnectionResetError，如下所示：
[04/Sep/2020 14:43:40] "GET /media/Videos/2020-09-01-12-43-16-345.mp4 HTTP/1.1" 200 266240
Traceback (most recent call last):
File "/usr/lib/python3.6/wsgiref/handlers.py",line 138,in run
self.finish_response()
File "/usr/lib/python3.6/wsgiref/handlers.py",line 180,in finish_response
self.write(data)
File "/usr/lib/python3.6/wsgiref/handlers.py",line 279,in write
self._write(data)
File "/usr/lib/python3.6/wsgiref/handlers.py",line 453,in _write
result = self.stdout.write(data)
File "/usr/lib/python3.6/socketserver.py",line 803,in write
self._sock.sendall(b)
ConnectionResetError: [Errno 104] Connection reset by peer
[04/Sep/2020 14:43:40] "GET /media/Videos/2020-09-01-12-43-16-345.mp4 HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('192.168.2.102',37610)
Traceback (most recent call last):
File "/usr/lib/python3.6/wsgiref/handlers.py",in write
self._sock.sendall(b)
ConnectionResetError: [Errno 104] Connection reset by peer
During handling of the above exception,another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.6/wsgiref/handlers.py",line 141,in run
self.handle_error()
File "/home/ac3l1k/Desktop/PROJECT/myLittleProject/env/lib/python3.6/site-packages/django/core/servers/basehttp.py",line 119,in handle_error
super().handle_error()
File "/usr/lib/python3.6/wsgiref/handlers.py",line 368,in handle_error
self.finish_response()
File "/usr/lib/python3.6/wsgiref/handlers.py",line 274,in write
self.send_headers()
File "/usr/lib/python3.6/wsgiref/handlers.py",line 331,in send_headers
if not self.origin_server or self.client_is_modern():
File "/usr/lib/python3.6/wsgiref/handlers.py",line 344,in client_is_modern
return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
TypeError: 'nonetype' object is not subscriptable
During handling of the above exception,another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.6/socketserver.py",line 654,in process_request_thread
self.finish_request(request,client_address)
File "/usr/lib/python3.6/socketserver.py",line 364,in finish_request
self.RequestHandlerClass(request,client_address,self)
File "/usr/lib/python3.6/socketserver.py",line 724,in __init__
self.handle()
File "/home/ac3l1k/Desktop/PROJECT/myLittleProject/env/lib/python3.6/site-packages/django/core/servers/basehttp.py",line 172,in handle
self.handle_one_request()
File "/home/ac3l1k/Desktop/PROJECT/myLittleProject/env/lib/python3.6/site-packages/django/core/servers/basehttp.py",line 197,in handle_one_request
handler.run(self.server.get_app())
File "/usr/lib/python3.6/wsgiref/handlers.py",line 144,in run
self.close()
File "/home/ac3l1k/Desktop/PROJECT/myLittleProject/env/lib/python3.6/site-packages/django/core/servers/basehttp.py",line 114,in close
super().close()
File "/usr/lib/python3.6/wsgiref/simple_server.py",line 35,in close
self.status.split(' ',1)[0],self.bytes_sent
AttributeError: 'nonetype' object has no attribute 'split'
----------------------------------------
[04/Sep/2020 14:43:43] "GET /media/Videos/2020-09-01-12-43-16-345.mp4 HTTP/1.1" 200 4030034
[04/Sep/2020 14:43:44] "GET /media/Videos/2020-09-01-12-43-16-345.mp4 HTTP/1.1" 200 4030034
[04/Sep/2020 14:43:45] "GET /media/Videos/2020-09-01-12-43-16-345.mp4 HTTP/1.1" 200 376832
Traceback (most recent call last):
File "/usr/lib/python3.6/wsgiref/handlers.py",in write
self._sock.sendall(b)
ConnectionResetError: [Errno 104] Connection reset by peer
[04/Sep/2020 14:43:45] "GET /media/Videos/2020-09-01-12-43-16-345.mp4 HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('192.168.2.102',37616)
Traceback (most recent call last):
File "/usr/lib/python3.6/wsgiref/handlers.py",line 174,self.bytes_sent
AttributeError: 'nonetype' object has no attribute 'split'
----------------------------------------
[04/Sep/2020 14:43:46] "GET /media/Videos/2020-09-01-12-43-16-345.mp4 HTTP/1.1" 200 4030034
[04/Sep/2020 14:43:48] "GET /media/Videos/2020-09-01-12-43-16-345.mp4 HTTP/1.1" 200 4030034
[04/Sep/2020 14:43:48] "GET /media/Videos/2020-09-01-12-43-16-345.mp4 HTTP/1.1" 200 409600
Traceback (most recent call last):
File "/usr/lib/python3.6/wsgiref/handlers.py",in write
self._sock.sendall(b)
ConnectionResetError: [Errno 104] Connection reset by peer
[04/Sep/2020 14:43:48] "GET /media/Videos/2020-09-01-12-43-16-345.mp4 HTTP/1.1" 500 59
// I skipped a lot because the pattern is always the same: a bunch of GET requests followed by ConnectionResetError and so on
有人可以帮助我解决我的问题吗？仅当我播放视频时才会发生这种服务器错误。其他API接口不会导致此类错误。 At this SO thread，他们说这是在服务器端发生的，并且向服务器发出了太多请求。
解决方法
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