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From David Reiss <dre...@facebook.com>
Subject Re: "TSocket read 0 bytes" when dictionary contains unicode character on 64-bit Ubuntu
Date Mon, 17 May 2010 19:36:50 GMT
I'm not really sure what would cause this.  It sounds like either
a bug in the fastbinary module or corrupted data being sent to the
server.

--David

Francisco Byun wrote:
> Hello David,
> 
> I forgot to take a look at server error log. This is what I found from
> server. Well, server think, it got "Unexpected TType". Again, it only
> happens when I put non-latin character (Korean letters) in the string.
> If I send everything purely in latin character, no ERROR occurs.
> 
> 2010-05-18 03:37:57,917 [25831:-4E200470] <root> ** ERROR ** Unexpected TType
> Traceback (most recent call last):
>   File "build/bdist.linux-i686/egg/thrift/server/TServer.py", line
> 157, in serveClient
>     self.processor.process(iprot, oprot)
>   File "/home/ara/arara/gen-py/arara_thrift/ArticleManager.py", line
> 833, in process
>     self._processMap[name](self, seqid, iprot, oprot)
>   File "/home/ara/arara/gen-py/arara_thrift/ArticleManager.py", line
> 1036, in process_write_article
>     args.read(iprot)
>   File "/home/ara/arara/gen-py/arara_thrift/ArticleManager.py", line
> 3054, in read
>     fastbinary.decode_binary(self, iprot.trans, (self.__class__,
> self.thrift_spec))
> TypeError: Unexpected TType
> 
> 
> 2010/5/18 David Reiss <dreiss@facebook.com>:
>> It looks like the server closed the connection without sending back
>> a response.  I would take a look at the server error log.
>>
>> --David
>>
>> Francisco Byun wrote:
>>> Hello. I'm running a BBS written in Python which use Thrift as the
>>> protocol between Backend & Frontend server. Recently I tried to
>>> migrate Frontend server. Former Frontend server was 32-bit Ubuntu
>>> server. New Frontend server is 64-bit Ubuntu server with doubled
>>> memory.
>>>
>>> But I failed.
>>>
>>> When Frontend ask Backend to send some information, it works fine. But
>>> when Frontend tries to send some information, it does not work very
>>> well. For example, I tried to write an article written in English,
>>> everything was fine. But when I tried to write an article written in
>>> Korean, it just screwed up with following traceback.
>>>
>>> What should I inspect? Is this reported Thrift problem, or my code is
>>> wrong? (But identical source works fine with 32-bit Ubuntu server
>>>
>>> .)
>>>
>>> Traceback (most recent call last):
>>>
>>>  File "/usr/local/lib/python2.6/dist-packages/Django-1.2-py2.6.egg/django/core/handlers/base.py",
>>> line 100, in get_response
>>>    response = callback(request, *callback_args, **callback_kwargs)
>>>
>>>  File "/home/ara/arara/warara/__init__.py", line 24, in check_error
>>>    return f(*args, **argv)
>>>
>>>  File "/home/ara/arara/warara/board/views.py", line 118, in write
>>>    return write_(request, board_name)
>>>
>>>  File "/home/ara/arara/warara/__init__.py", line 24, in check_error
>>>    return f(*args, **argv)
>>>
>>>  File "/home/ara/arara/warara/board/views.py", line 169, in write_
>>>    article_id = server.article_manager.write_article(sess, board_name,
>>> WrittenArticle(**article_dic))
>>>
>>>  File "/home/ara/arara/gen-py/arara_thrift/ArticleManager.py", line
>>> 607, in write_article
>>>    return self.recv_write_article()
>>>
>>>  File "/home/ara/arara/gen-py/arara_thrift/ArticleManager.py", line
>>> 620, in recv_write_article
>>>    (fname, mtype, rseqid) = self._iprot.readMessageBegin()
>>>
>>>  File "/usr/local/lib/python2.6/dist-packages/Thrift-0.2.0-py2.6-linux-x86_64.egg/thrift/protocol/TBinaryProtocol.py",
>>> line 126, in readMessageBegin
>>>    sz = self.readI32()
>>>
>>>  File "/usr/local/lib/python2.6/dist-packages/Thrift-0.2.0-py2.6-linux-x86_64.egg/thrift/protocol/TBinaryProtocol.py",
>>> line 203, in readI32
>>>    buff = self.trans.readAll(4)
>>>
>>>  File "/usr/local/lib/python2.6/dist-packages/Thrift-0.2.0-py2.6-linux-x86_64.egg/thrift/transport/TTransport.py",
>>> line 58, in readAll
>>>    chunk = self.read(sz-have)
>>>
>>>  File "/usr/local/lib/python2.6/dist-packages/Thrift-0.2.0-py2.6-linux-x86_64.egg/thrift/transport/TTransport.py",
>>> line 155, in read
>>>    self.__rbuf = StringIO(self.__trans.read(max(sz, self.DEFAULT_BUFFER)))
>>>
>>>  File "/usr/local/lib/python2.6/dist-packages/Thrift-0.2.0-py2.6-linux-x86_64.egg/thrift/transport/TSocket.py",
>>> line 94, in read
>>>    raise TTransportException(type=TTransportException.END_OF_FILE,
>>> message='TSocket read 0 bytes')
>>>
>>> TTransportException: TSocket read 0 bytes
>>>
>>> <ModPythonRequest
>>> path:/board/test/write/,
>>> GET:<QueryDict: {}>,
>>> POST:<QueryDict: {u'file1': [u'', u''], u'delete_file': [u''],
>>> u'article_no': [u''], u'title': [u'test'], u'text': [u'--\r\nKAIST
>>> \ucca0\ud559\uacfc\uc5d0 \uc7ac\ud559\uc911\uc778
>>> \ubcc0\uaddc\ud64d\uc774\ub77c\uace0 \ud569\ub2c8\ub2e4.'],
>>> u'article_write': [u'write'], u'board_name': [u'test'], u'write_type':
>>> [u'write'], u'file1_fi': [u'', u'']}>,

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