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Python Cherrypy DECRYPTION_FAILED_OR_BAD_RECORD_MAC

Good day,
I've an app that is uses Cherrypy to server a simple website. From time to time I get DECRYPTION_FAILED_OR_BAD_RECORD_MAC error. I've never seen an issue my self while testing, this only obvious in logs.
[26/Nov/2021:02:50:39] ENGINE Error in HTTPServer.serve
Traceback (most recent call last):
File "/home/user/app/venv/lib/python3.8/site-packages/cheroot/server.py", line 1810, in serve
self._connections.run(self.expiration_interval)
File "/home/user/app/venv/lib/python3.8/site-packages/cheroot/connections.py", line 201, in run
self._run(expiration_interval)
File "/home/user/app/venv/lib/python3.8/site-packages/cheroot/connections.py", line 218, in _run
new_conn = self._from_server_socket(self.server.socket)
File "/home/user/app/venv/lib/python3.8/site-packages/cheroot/connections.py", line 272, in _from_server_socket
s, ssl_env = self.server.ssl_adapter.wrap(s)
File "/home/user/app/venv/lib/python3.8/site-packages/cheroot/ssl/builtin.py", line 277, in wrap
s = self.context.wrap_socket(
File "/usr/lib/python3.8/ssl.py", line 500, in wrap_socket
return self.sslsocket_class._create(
File "/usr/lib/python3.8/ssl.py", line 1040, in _create
self.do_handshake()
File "/usr/lib/python3.8/ssl.py", line 1309, in do_handshake
self._sslobj.do_handshake()
ssl.SSLError: [SSL: DECRYPTION_FAILED_OR_BAD_RECORD_MAC] decryption failed or bad record mac (_ssl.c:1131)
Is there a simple way for Cherrypy to log this as one line error in logs or is there a way to fix it?

I encountered the same (and also SSLV3_ALERT_BAD_CERTIFICATE). My setup: CherryPy 18.5.0; Python 3.7
I use Self-signed certificate (I think this is the key info for the issue)
Due to the not trusted certificate, browsers indicate that it is not a properly secured connection. Users need to click confirm that they still want to browse the pages.
Access attempts from Edge or Chrome do not trigger this CherryPy error. Firefox seems to send something to the server even before it made sure that the request is to go ahead (i.e. even before confirm).
IMHO, CherryPy should handle the SSL errors (catch the exceptions) and let the users handle them.
Since I cannot control users' browser selection, nor can I catch the SSL exception, my "solution" was to get the users install the self-signed certificate. From that point on, they can browse the pages without warning and no such CherryPy error pops up in the logs anymore.
I know this is a pretty weak solution, but nobody answered, so I thought I'd share this, as it might help someone.

Django React js: ConnectionAbortedError: [WinError 10053] An established connection was aborted by the software in your host machine

I'm creating a web app using React in the frontend and Django in the backend. I used this blog to integrate react with backend. However I get a strange error called
ConnectionAbortedError: [WinError 10053] An established connection was aborted by the software in your host machine
I searched the internet a lot found this question, did what the answer says but the problem persists. I don't think the database has something to do with my issue, because the pure django pages work fine but only react powered page throw this error. I found a question that is closest to mine, this one, but the question is unanswered, and apparently the problem is with loading some media page, but I just want to load <h1>Hello World!</h1>. Here's full traceback
Traceback (most recent call last):
File "c:\users\ilqar\appdata\local\programs\python\python38-32\lib\socketserver.py", line 650, in process_request_thread
self.finish_request(request, client_address)
File "c:\users\ilqar\appdata\local\programs\python\python38-32\lib\socketserver.py", line 360, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "c:\users\ilqar\appdata\local\programs\python\python38-32\lib\socketserver.py", line 720, in __init__
self.handle()
File "C:\Users\Ilqar\.virtualenvs\django-react-reddit-XsnOy92e\lib\site-packages\django\core\servers\basehttp.py", line 174, in handle
self.handle_one_request()
File "C:\Users\Ilqar\.virtualenvs\django-react-reddit-XsnOy92e\lib\site-packages\django\core\servers\basehttp.py", line 182, in handle_one_request
self.raw_requestline = self.rfile.readline(65537)
File "c:\users\ilqar\appdata\local\programs\python\python38-32\lib\socket.py", line 669, in readinto
return self._sock.recv_into(b)
ConnectionAbortedError: [WinError 10053] An established connection was aborted by the software in your host machine
By the way, I did not include the code because it is exactly the same as in that blog.(except models and stuff, I don't do any api calls or something just Hello World!.
And I also tried to turn off firewall and try, but the result was the same, error is persisting.
I have debug_toolbar in my INSTALLED_APPS so it shows in the every page. Strangely only React side of page is not rendered, all the others, including debug toolbar, page title and stuff is there.
So what can I do about this?
Thanks in advance.

I had a similar problem, and putting the event.preventDefault(); in the submit event; I had no more problems

error: [Errno 32] Broken pipe

I am working on a Django project. All went well till I created an Ajax request to send values from the html page to the backend (views.py).
When I send the data using Ajax, I am able to view the values being passed to views.py, and it even reaches the render_to_response method and displays my page, but throws the broken pipe error in the terminal. I don't see any kind of disruption to the program, but I wanted to know if there is a way to prevent this error from occurring. I checked the other responses. But no luck so far.
When I try to hit submit again on the refreshed page, I get this message:
The page that you're looking for used information that you entered. Returning to that page might cause any action you took to be repeated. Do you want to continue? [Submit] [Cancel]`
Here is the dump:
Traceback (most recent call last):
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 34812)
----------------------------------------
File "/usr/lib/python2.7/dist-packages/django/core/servers/basehttp.py", line 284, in run
self.finish_response()
File "/usr/lib/python2.7/dist-packages/django/core/servers/basehttp.py", line 324, in finish_response
self.write(data)
File "/usr/lib/python2.7/dist-packages/django/core/servers/basehttp.py", line 403, in write
self.send_headers()
File "/usr/lib/python2.7/dist-packages/django/core/servers/basehttp.py", line 467, in send_headers
self.send_preamble()
File "/usr/lib/python2.7/dist-packages/django/core/servers/basehttp.py", line 385, in send_preamble
'Date: %s\r\n' % http_date()
File "/usr/lib/python2.7/socket.py", line 324, in write
self.flush()
File "/usr/lib/python2.7/socket.py", line 303, in flush
self._sock.sendall(view[write_offset:write_offset+buffer_size])
error: [Errno 32] Broken pipe
Traceback (most recent call last):
File "/usr/lib/python2.7/SocketServer.py", line 284, in _handle_request_noblock
self.process_request(request, client_address)
File "/usr/lib/python2.7/SocketServer.py", line 310, in process_request
self.finish_request(request, client_address)
File "/usr/lib/python2.7/SocketServer.py", line 323, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "/usr/lib/python2.7/dist-packages/django/core/servers/basehttp.py", line 570, in __init__
BaseHTTPRequestHandler.__init__(self, *args, **kwargs)
File "/usr/lib/python2.7/SocketServer.py", line 640, in __init__
self.finish()
File "/usr/lib/python2.7/SocketServer.py", line 693, in finish
self.wfile.flush()
File "/usr/lib/python2.7/socket.py", line 303, in flush
self._sock.sendall(view[write_offset:write_offset+buffer_size])
error: [Errno 32] Broken pipe
Update:
Here is the code that I am sending:
$( document ).ready(function() {
$.csrftoken();
$("#submitdata").click(function(){
//values = [tmode, fmode, t_cool, t_heat, hold];
values = {
"tmode": tmode,
"fmode": fmode,
"t_cool": t_cool,
"t_heat": t_heat,
"hold": hold
};
var jsonText = JSON.stringify(values);
$.ajax({
url: "/submitdata/",
type: 'POST',
data: jsonText,
dataType: 'json',
success:function(data){
console.log(data.success);
},
complete:function(){
console.log('complete');
},
error:function (xhr, textStatus, thrownError){
console.log(thrownError);
console.log(obj);
}
});
});
});
And here is my views.py:
#login_required
def submitvalues(request):
#context = RequestContext(request)
if request.POST:
jsonvalues = json.loads(request.raw_post_data)
print jsonvalues
return HttpResponse(json.dumps(dict(status='updated')), mimetype="application/json")
I am still facing the same issue. Can someone help me with this?
Edit on 5/28/2014:
I just figured out the reason for a Broken Pipe. It was because I was not sending back the response from Python and was just expecting the page to refresh automatically. I am a newbie to all of this, and took me a while to figure out why this happened.

You haven't posted any code, but this is probably because you have triggered the Ajax request on a button submit but haven't prevented the default action. So the Ajax request is made, but by the time it comes to return the data, the browser has already requested the next page anyway, so there is nothing to receive it.

I have solved this problem by adding this:
self.send_header("Access-Control-Allow-Origin", "*")
Because I found some error on sending post request page:
No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is there
Then I got this solution and solved above problem.

how can fix this error googleApp engine error 10054

i am using google app engine on my server (listen --address=0.0.0.0 all network) my application a short time correctyl(i get some users input, some process,show the data and insert mysql db) after i take this error message and web browser didn't show anything, my system: google app engine, python 2.7, mysql(via rdbms) i change the port(8080,8091,8090vs...) or restart app engine, my applicayion again work but after then again same error message
Traceback (most recent call last):
File "C:\Python27\lib\SocketServer.py", line 284, in _handle_request_noblock
self.process_request(request, client_address)
File "C:\Python27\lib\SocketServer.py", line 310, in process_request
self.finish_request(request, client_address)
File "C:\Python27\lib\SocketServer.py", line 323, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver.py", line 2734, in __init__
BaseHTTPServer.BaseHTTPRequestHandler.__init__(self, *args, **kwargs)
File "C:\Python27\lib\SocketServer.py", line 639, in __init__
self.handle()
File "C:\Python27\lib\BaseHTTPServer.py", line 343, in handle
self.handle_one_request()
File "C:\Python27\lib\BaseHTTPServer.py", line 313, in handle_one_request
self.raw_requestline = self.rfile.readline(65537)
File "C:\Python27\lib\socket.py", line 476, in readline
data = self._sock.recv(self._rbufsize)
error: [Errno 10054]

Try switching to a more serious networking framework, not based on a toy HTTP server (BaseHTTPServer is a toy HTTP server).
10054 is the Windows error ECONNRESET. This indicates that the connection your HTTP server is trying to read from has been closed. It's not exactly an error condition - connections get closed, it's a normal part of their lifecycle - but the Google AppEngine (development!) server you're using seems to be treating it as an error. Perhaps in doing so it ends up responding incorrectly to other requests as well.
A correct HTTP server will not have a problem dealing with this situation.

The AppEngine development server is indeed pretty limited (single-threaded, HTTP 1.0 only, not robust to connection resets), but it is the only option for emulating in a local dev. environment the behavior of the production server, including stubs to AppEngine services and sandboxing of some modules (including os and socket).
Until Google provide us with a more robust alternative, I added exception handlers for the expected socket errors in the handle_one_request method of BaseHTTPServer.py (located in the Lib subdir of the Python installation directory)
[end of BaseHTTPServer.py::handle_one_request() - Python 2.7]
except socket.error as socket_error:
import errno
if socket_error.errno in (errno.ECONNABORTED, errno.WSAECONNABORTED, errno.ECONNRESET, errno.WSAECONNRESET):
pass
else:
raise
ECONNABORTED/WSAECONNABORTED is happening on remote disconnects - see Python issue 14574 for details.

Django is sooo slow? errno 32 broken pipe? dcramer-django-sentry-? static folder?

I've been using Django 1.3 with Python 2.6 on Ubuntu 10.10. I have 3 questions.
I recall having this problem on Windows 7 when I used Django a while ago. However, I also remember that when I first used Django this problem didn't occur.
When I access Django via 127.0.0.1:8000, after starting a brand new project, I can reach the site, but sometimes it takes a good 10-20 secs and sometimes more to reach it. Also, on a project I've barely worked on, I have the same problems and also get errors like:
Exception happened during processing of request from ('127.0.0.1', 47758)
Traceback (most recent call last):
File "/usr/lib/python2.6/SocketServer.py", line 283, in _handle_request_noblock
self.process_request(request, client_address)
File "/usr/lib/python2.6/SocketServer.py", line 309, in process_request
self.finish_request(request, client_address)
File "/usr/lib/python2.6/SocketServer.py", line 322, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "/usr/local/lib/python2.6/dist-packages/Django-1.3-py2.6.egg/django/core/servers/basehttp.py", line 570, in __init__
BaseHTTPRequestHandler.__init__(self, *args, **kwargs)
File "/usr/lib/python2.6/SocketServer.py", line 618, in __init__
self.finish()
File "/usr/lib/python2.6/SocketServer.py", line 661, in finish
self.wfile.flush()
File "/usr/lib/python2.6/socket.py", line 297, in flush
self._sock.sendall(buffer(data, write_offset, buffer_size))
error: [Errno 32] Broken pipe
Also, whenever I get an error I expect dcramer's django-sentry to log the error in the database, but when I go into MySQL and check the tables, there is nothing there. I followed the instructions on the site to install the app.
I placed this in my urls.py file:
url(r'^static/(?P<path>.*)$', 'django.views.static.serve', {'document_root': '/home/user/apache2/www/django/ecomstore/static',})
However, when I go to 127.0.0.1:8000/static/css.css I can't find the file I placed in the folder. What did I do wrong?
Thanks for all the help!

this issue is also discussed here Django + WebKit = Broken pipe

These errors are the client closing the connection before it has a chance to fully send all data (I believe).
There are certain areas of the stack, this being one of them, that Sentry currently can't log exceptions from. We're hoping to improve this in Sentry 2.0.

/Have you set STATIC_URL = '/static/' in your settings