[Baypiggies] Baypiggies Digest, Vol 84, Issue 29
Max Slimmer
max at theslimmers.net
Mon Oct 29 17:26:31 CET 2012
For all it's worth I see this error from time to time. I have some
code that does screen scraping against ADP (payroll) servers, and it
sometimes is a fairly lengthy process. From some clients systems this
error occurs, I just take it as poor internet connection, so i put the
code that does the post in a try loop and if I get the error I wait a
second or tow and re-try up to three times. With this in place it
almost never causes problems. I see the re-trys happening but they go
thru.
max
On Sun, Oct 28, 2012 at 10:22 PM, <baypiggies-request at python.org> wrote:
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> Today's Topics:
>
> 1. Re: Need help root causing exception
> http.client.BadStatusLine (AM)
> 2. Re: Need help root causing exception
> http.client.BadStatusLine (Shubhra Sharma)
>
>
> ---------- Forwarded message ----------
> From: AM <ams.fwd at gmail.com>
> To: Shubhra Sharma <sharma.shubhra07 at gmail.com>
> Cc: Baypiggies at python.org
> Date: Sun, 28 Oct 2012 22:16:34 -0700
> Subject: Re: [Baypiggies] Need help root causing exception http.client.BadStatusLine
> Strange. On debian testing with python 2.7 with the following steps I get this output:
>
> 1. Start netcat, (note: OSX does now allow -p with -l)
> 2. Fire the request
> 3. ctrl-c netcat
>
> Can you reproduce that?
>
> netcat:
> » nc -l -p 8080
> GET /hello HTTP/1.1
> Accept-Encoding: identity
> Host: localhost:8080
> Connection: close
> User-Agent: Python-urllib/2.7
>
> ^C
>
>
> Interpreter:
> » python
> Python 2.7.3rc2 (default, Apr 22 2012, 22:30:17)
> [GCC 4.6.3] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
>>>> from urllib2 import urlopen
>>>> r = urlopen('http://localhost:8080/hello')
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "/usr/lib/python2.7/urllib2.py", line 126, in urlopen
> return _opener.open(url, data, timeout)
> File "/usr/lib/python2.7/urllib2.py", line 400, in open
> response = self._open(req, data)
> File "/usr/lib/python2.7/urllib2.py", line 418, in _open
> '_open', req)
> File "/usr/lib/python2.7/urllib2.py", line 378, in _call_chain
> result = func(*args)
> File "/usr/lib/python2.7/urllib2.py", line 1207, in http_open
> return self.do_open(httplib.HTTPConnection, req)
> File "/usr/lib/python2.7/urllib2.py", line 1180, in do_open
> r = h.getresponse(buffering=True)
> File "/usr/lib/python2.7/httplib.py", line 1030, in getresponse
> response.begin()
> File "/usr/lib/python2.7/httplib.py", line 407, in begin
> version, status, reason = self._read_status()
> File "/usr/lib/python2.7/httplib.py", line 371, in _read_status
> raise BadStatusLine(line)
> httplib.BadStatusLine: ''
>>>>
>
>
> On 10/28/2012 08:17 PM, Shubhra Sharma wrote:
>>
>> So nc -l localhost 8080 in one terminal tab and running my client in another tab. My client does several POST, PUT and some GETs. I did a Ctrl-C but didnot hit the Bad StatusLine on my OSX10.7.x. I never hit the Bad StatusLine on my OSX10.7.x. It occurs only on CentOS. Maybe I am missing something?
>>
>> Thanks for your help,
>> Shubhra
>>
>> On Sun, Oct 28, 2012 at 7:09 PM, AM <ams.fwd at gmail.com <mailto:ams.fwd at gmail.com>> wrote:
>>
>> I think what Guido meant was that the server was alive but did not
>> respond with anything, instead closing the connection.
>>
>> Assuming you are running on linux or OSX a quick way to check it
>> is to use the netcat tool in a terminal:
>>
>> nc -l -p 8080
>>
>> Then have your client connect to localhost:8080/...
>>
>> In the terminal you should see the request. Ctrl-C netcat and you
>> should (afaik) see the BadStatusLine error.
>>
>> What that would mean is that somewhere tomcat decided to simply
>> close the connection before any response was sent out.
>>
>> HTH
>> AM
>>
>>
>> On 10/28/2012 06:37 PM, Shubhra Sharma wrote:
>>
>> Hi Guido,
>>
>> Thanks for responding.I will check the catalina logs to see
>> what happened.
>>
>> When tomcat is not running on my setup I see the following error:
>>
>> File
>> "/opt/local/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/site-packages/httplib2/__init__.py",
>> line 1207, in request
>> (response, content) = self._request(conn, authority, uri,
>> request_uri, method, body, headers, redirections, cachekey)
>> File
>> "/opt/local/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/site-packages/httplib2/__init__.py",
>> line 961, in _request
>> (response, content) = self._conn_request(conn,
>> request_uri, method, body, headers)
>> File
>> "/opt/local/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/site-packages/httplib2/__init__.py",
>> line 898, in _conn_request
>> conn.connect()
>> File
>> "/opt/local/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/http/client.py",
>> line 724, in connect
>> self.timeout, self.source_address)
>> File
>> "/opt/local/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/socket.py",
>> line 404, in create_connection
>> raise err
>> File
>> "/opt/local/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/socket.py",
>> line 395, in create_connection
>> sock.connect(sa)
>> socket.error: [Errno 61] Connection refused
>>
>> I did not see the BadStatusLine exception in my unittesting.
>> Is there anything I can do to catch this exception, the try
>> catch around the http request did not catch it? I am using
>> httplib2 if that helps
>> Thanks,
>> Shubhra
>>
>> On Sun, Oct 28, 2012 at 5:28 PM, Guido van Rossum
>> <guido at python.org <mailto:guido at python.org>
>> <mailto:guido at python.org <mailto:guido at python.org>>> wrote:
>>
>> That particular line where this is raised means the server
>> closed the
>> connection without sending any response at all. Check your
>> server
>> logs?
>>
>> On Sun, Oct 28, 2012 at 4:00 PM, Shubhra Sharma
>> <sharma.shubhra07 at gmail.com
>> <mailto:sharma.shubhra07 at gmail.com>
>> <mailto:sharma.shubhra07 at gmail.com
>> <mailto:sharma.shubhra07 at gmail.com>>>
>>
>> wrote:
>> > Hi Aahz,
>> >
>> > Thanks for responding. I'm not sending an Expect Header
>> and I'm
>> using
>> > Apache-Coyote/1.1
>> >
>> > Thanks,
>> > Shubhra
>> >
>> >
>> > On Sun, Oct 28, 2012 at 2:06 PM, Aahz
>> <aahz at pythoncraft.com <mailto:aahz at pythoncraft.com>
>> <mailto:aahz at pythoncraft.com
>> <mailto:aahz at pythoncraft.com>>> wrote:
>> >>
>> >> On Sun, Oct 28, 2012, Shubhra Sharma wrote:
>> >> >
>> >> > I am encountering http.client.BadStatusLine exception
>> when I
>> run my
>> >> > python
>> >> > scripts on CentOS6.32 but things seem to work fine on MAC
>> OSX10.7.5 and
>> >> > 10.8. I'm on Python3.2.3.
>> >> >
>> >> > I searched for answers on the internet and looked at
>> the python
>> >> > documentation as well without much luck. As per the
>> documentation if a
>> >> > server responds with a HTTP status code that we don?t
>> understand this
>> >> > error
>> >> > is raised. The server is a Tomcat server. Any ideas
>> on how to
>> debug this
>> >> > will be greatly appreciated.
>> >> >
>> >> > Here's a snippet of the error:
>> >> > response = conn.getresponse()
>> >> > python3.2/http/client.py", line 1049, in getresponse
>> >> > response.begin()
>> >> > python3.2/http/client.py", line 346, in begin
>> >> > version, status, reason = self._read_status()
>> >> > python3.2/http/client.py", line 328, in _read_status
>> >> > raise BadStatusLine(line)
>> >> > http.client.BadStatusLine:
>> >>
>> >> I've seen various causes for this, but I'd start by
>> making sure
>> that
>> >> you're not sending an Expect: header and doing HTTP/1.0
>> connection.
>> >> --
>> >> Aahz (aahz at pythoncraft.com
>> <mailto:aahz at pythoncraft.com> <mailto:aahz at pythoncraft.com
>> <mailto:aahz at pythoncraft.com>>) <*>
>>
>> >> http://www.pythoncraft.com/
>> >>
>> >> "We've just found a line in a perl script that invokes
>> a shell
>> script to
>> >> call
>> >> a lisp program which invokes the very-same perl script."
>> --anonymous
>> >> _______________________________________________
>> >> Baypiggies mailing list
>> >> Baypiggies at python.org <mailto:Baypiggies at python.org>
>> <mailto:Baypiggies at python.org <mailto:Baypiggies at python.org>>
>>
>> >> To change your subscription options or unsubscribe:
>> >> http://mail.python.org/mailman/listinfo/baypiggies
>> >
>> >
>> >
>> > _______________________________________________
>> > Baypiggies mailing list
>> > Baypiggies at python.org <mailto:Baypiggies at python.org>
>> <mailto:Baypiggies at python.org <mailto:Baypiggies at python.org>>
>>
>> > To change your subscription options or unsubscribe:
>> > http://mail.python.org/mailman/listinfo/baypiggies
>>
>>
>>
>> --
>> --Guido van Rossum (python.org/~guido
>> <http://python.org/%7Eguido> <http://python.org/%7Eguido>)
>>
>>
>>
>>
>>
>> _______________________________________________
>> Baypiggies mailing list
>> Baypiggies at python.org <mailto:Baypiggies at python.org>
>> To change your subscription options or unsubscribe:
>> http://mail.python.org/mailman/listinfo/baypiggies
>>
>>
>>
>
>
>
>
> ---------- Forwarded message ----------
> From: Shubhra Sharma <sharma.shubhra07 at gmail.com>
> To: AM <ams.fwd at gmail.com>
> Cc: Baypiggies at python.org
> Date: Sun, 28 Oct 2012 22:22:57 -0700
> Subject: Re: [Baypiggies] Need help root causing exception http.client.BadStatusLine
> nc -l -p 8080 doesnot work on my osx.
> ssharma-dev1:newscripts ssharma$ nc -l localhost 8080
> GET /xyz/api/states/syncingIds HTTP/1.1
> Host: localhost:8080
> User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:16.0) Gecko/20100101 Firefox/16.0
> Accept: */*
> Accept-Language: en-US,en;q=0.5
> Accept-Encoding: gzip, deflate
> Connection: keep-alive
> X-Requested-With: XMLHttpRequest
> Referer: http://localhost:8080/xyz/
>
> ^C
> ssharma-dev1:newscripts ssharma$ nc -l localhost 8080
> POST /ucx/api/nodes/ HTTP/1.1
> Host: localhost:8080
> Content-Length: 78
> accept-encoding: gzip, deflate
> content-type: application/json; charset=UTF-8
> accept: application/json
> user-agent: Python-httplib2/0.7.6 (gzip)
>
> {"parentId":1275,"name":"COMPANY-2012-10-28 19:57:24.507300","type":"COMPANY"}^C
>
>
>
> On Sun, Oct 28, 2012 at 10:16 PM, AM <ams.fwd at gmail.com> wrote:
>>
>> Strange. On debian testing with python 2.7 with the following steps I get this output:
>>
>> 1. Start netcat, (note: OSX does now allow -p with -l)
>> 2. Fire the request
>> 3. ctrl-c netcat
>>
>> Can you reproduce that?
>>
>> netcat:
>> » nc -l -p 8080
>> GET /hello HTTP/1.1
>> Accept-Encoding: identity
>> Host: localhost:8080
>> Connection: close
>> User-Agent: Python-urllib/2.7
>>
>> ^C
>>
>>
>> Interpreter:
>> » python
>> Python 2.7.3rc2 (default, Apr 22 2012, 22:30:17)
>> [GCC 4.6.3] on linux2
>> Type "help", "copyright", "credits" or "license" for more information.
>> >>> from urllib2 import urlopen
>> >>> r = urlopen('http://localhost:8080/hello')
>> Traceback (most recent call last):
>> File "<stdin>", line 1, in <module>
>> File "/usr/lib/python2.7/urllib2.py", line 126, in urlopen
>> return _opener.open(url, data, timeout)
>> File "/usr/lib/python2.7/urllib2.py", line 400, in open
>> response = self._open(req, data)
>> File "/usr/lib/python2.7/urllib2.py", line 418, in _open
>> '_open', req)
>> File "/usr/lib/python2.7/urllib2.py", line 378, in _call_chain
>> result = func(*args)
>> File "/usr/lib/python2.7/urllib2.py", line 1207, in http_open
>> return self.do_open(httplib.HTTPConnection, req)
>> File "/usr/lib/python2.7/urllib2.py", line 1180, in do_open
>> r = h.getresponse(buffering=True)
>> File "/usr/lib/python2.7/httplib.py", line 1030, in getresponse
>> response.begin()
>> File "/usr/lib/python2.7/httplib.py", line 407, in begin
>>
>> version, status, reason = self._read_status()
>> File "/usr/lib/python2.7/httplib.py", line 371, in _read_status
>> raise BadStatusLine(line)
>> httplib.BadStatusLine: ''
>>
>> >>>
>>
>>
>> On 10/28/2012 08:17 PM, Shubhra Sharma wrote:
>>>
>>> So nc -l localhost 8080 in one terminal tab and running my client in another tab. My client does several POST, PUT and some GETs. I did a Ctrl-C but didnot hit the Bad StatusLine on my OSX10.7.x. I never hit the Bad StatusLine on my OSX10.7.x. It occurs only on CentOS. Maybe I am missing something?
>>>
>>> Thanks for your help,
>>> Shubhra
>>>
>>> On Sun, Oct 28, 2012 at 7:09 PM, AM <ams.fwd at gmail.com <mailto:ams.fwd at gmail.com>> wrote:
>>>
>>> I think what Guido meant was that the server was alive but did not
>>> respond with anything, instead closing the connection.
>>>
>>> Assuming you are running on linux or OSX a quick way to check it
>>> is to use the netcat tool in a terminal:
>>>
>>> nc -l -p 8080
>>>
>>> Then have your client connect to localhost:8080/...
>>>
>>> In the terminal you should see the request. Ctrl-C netcat and you
>>> should (afaik) see the BadStatusLine error.
>>>
>>> What that would mean is that somewhere tomcat decided to simply
>>> close the connection before any response was sent out.
>>>
>>> HTH
>>> AM
>>>
>>>
>>> On 10/28/2012 06:37 PM, Shubhra Sharma wrote:
>>>
>>> Hi Guido,
>>>
>>> Thanks for responding.I will check the catalina logs to see
>>> what happened.
>>>
>>> When tomcat is not running on my setup I see the following error:
>>>
>>> File
>>> "/opt/local/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/site-packages/httplib2/__init__.py",
>>> line 1207, in request
>>> (response, content) = self._request(conn, authority, uri,
>>> request_uri, method, body, headers, redirections, cachekey)
>>> File
>>> "/opt/local/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/site-packages/httplib2/__init__.py",
>>> line 961, in _request
>>> (response, content) = self._conn_request(conn,
>>> request_uri, method, body, headers)
>>> File
>>> "/opt/local/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/site-packages/httplib2/__init__.py",
>>> line 898, in _conn_request
>>> conn.connect()
>>> File
>>> "/opt/local/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/http/client.py",
>>> line 724, in connect
>>> self.timeout, self.source_address)
>>> File
>>> "/opt/local/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/socket.py",
>>> line 404, in create_connection
>>> raise err
>>> File
>>> "/opt/local/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/socket.py",
>>> line 395, in create_connection
>>> sock.connect(sa)
>>> socket.error: [Errno 61] Connection refused
>>>
>>> I did not see the BadStatusLine exception in my unittesting.
>>> Is there anything I can do to catch this exception, the try
>>> catch around the http request did not catch it? I am using
>>> httplib2 if that helps
>>> Thanks,
>>> Shubhra
>>>
>>> On Sun, Oct 28, 2012 at 5:28 PM, Guido van Rossum
>>> <guido at python.org <mailto:guido at python.org>
>>> <mailto:guido at python.org <mailto:guido at python.org>>> wrote:
>>>
>>> That particular line where this is raised means the server
>>> closed the
>>> connection without sending any response at all. Check your
>>> server
>>> logs?
>>>
>>> On Sun, Oct 28, 2012 at 4:00 PM, Shubhra Sharma
>>> <sharma.shubhra07 at gmail.com
>>> <mailto:sharma.shubhra07 at gmail.com>
>>> <mailto:sharma.shubhra07 at gmail.com
>>>
>>> <mailto:sharma.shubhra07 at gmail.com>>>
>>>
>>> wrote:
>>> > Hi Aahz,
>>> >
>>> > Thanks for responding. I'm not sending an Expect Header
>>> and I'm
>>> using
>>> > Apache-Coyote/1.1
>>> >
>>> > Thanks,
>>> > Shubhra
>>> >
>>> >
>>> > On Sun, Oct 28, 2012 at 2:06 PM, Aahz
>>> <aahz at pythoncraft.com <mailto:aahz at pythoncraft.com>
>>> <mailto:aahz at pythoncraft.com
>>>
>>> <mailto:aahz at pythoncraft.com>>> wrote:
>>> >>
>>> >> On Sun, Oct 28, 2012, Shubhra Sharma wrote:
>>> >> >
>>> >> > I am encountering http.client.BadStatusLine exception
>>> when I
>>> run my
>>> >> > python
>>> >> > scripts on CentOS6.32 but things seem to work fine on MAC
>>> OSX10.7.5 and
>>> >> > 10.8. I'm on Python3.2.3.
>>> >> >
>>> >> > I searched for answers on the internet and looked at
>>> the python
>>> >> > documentation as well without much luck. As per the
>>> documentation if a
>>> >> > server responds with a HTTP status code that we don?t
>>> understand this
>>> >> > error
>>> >> > is raised. The server is a Tomcat server. Any ideas
>>> on how to
>>> debug this
>>> >> > will be greatly appreciated.
>>> >> >
>>> >> > Here's a snippet of the error:
>>> >> > response = conn.getresponse()
>>> >> > python3.2/http/client.py", line 1049, in getresponse
>>> >> > response.begin()
>>> >> > python3.2/http/client.py", line 346, in begin
>>> >> > version, status, reason = self._read_status()
>>> >> > python3.2/http/client.py", line 328, in _read_status
>>> >> > raise BadStatusLine(line)
>>> >> > http.client.BadStatusLine:
>>> >>
>>> >> I've seen various causes for this, but I'd start by
>>> making sure
>>> that
>>> >> you're not sending an Expect: header and doing HTTP/1.0
>>> connection.
>>> >> --
>>> >> Aahz (aahz at pythoncraft.com
>>> <mailto:aahz at pythoncraft.com> <mailto:aahz at pythoncraft.com
>>>
>>> <mailto:aahz at pythoncraft.com>>) <*>
>>>
>>> >> http://www.pythoncraft.com/
>>> >>
>>> >> "We've just found a line in a perl script that invokes
>>> a shell
>>> script to
>>> >> call
>>> >> a lisp program which invokes the very-same perl script."
>>> --anonymous
>>> >> _______________________________________________
>>> >> Baypiggies mailing list
>>> >> Baypiggies at python.org <mailto:Baypiggies at python.org>
>>> <mailto:Baypiggies at python.org <mailto:Baypiggies at python.org>>
>>>
>>>
>>> >> To change your subscription options or unsubscribe:
>>> >> http://mail.python.org/mailman/listinfo/baypiggies
>>> >
>>> >
>>> >
>>> > _______________________________________________
>>> > Baypiggies mailing list
>>> > Baypiggies at python.org <mailto:Baypiggies at python.org>
>>> <mailto:Baypiggies at python.org <mailto:Baypiggies at python.org>>
>>>
>>>
>>> > To change your subscription options or unsubscribe:
>>> > http://mail.python.org/mailman/listinfo/baypiggies
>>>
>>>
>>>
>>> --
>>> --Guido van Rossum (python.org/~guido
>>> <http://python.org/%7Eguido> <http://python.org/%7Eguido>)
>>>
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> Baypiggies mailing list
>>>
>>> Baypiggies at python.org <mailto:Baypiggies at python.org>
>>> To change your subscription options or unsubscribe:
>>> http://mail.python.org/mailman/listinfo/baypiggies
>>>
>>>
>>>
>>
>
>
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