forget about uwsgi on windows. never really landed as production-ready. fortunately iis can run python without any hiccup and it's the current recommended way to deploy web2py in production on windows.
that being said, I'm really eager to know how the hell you're getting gevent mixed up with web2py's internal webserver, which is not at all compatible with gevent. On Wednesday, April 20, 2016 at 7:21:09 PM UTC+2, Kiran Subbaraman wrote: > > Hello all, > I use Windows 10 based laptop for my development. By default, web2py > serves its content via the rocket server. > My application makes use of the 'default' redis client () to connect to > the local redis server. > I started noticing a stacktrace, in the cmd prompt, from within which > web2py has started: > Created by Massimo Di Pierro, Copyright 2007-2016 > Version 2.14.3-stable+timestamp.2016.03.26.17.54.43 > Database drivers available: psycopg2, pymysql, imaplib, sqlite3, pg8000, > pyodbc, mysqlconnector > please visit: > http://127.0.0.1:8000/ > starting browser... > please visit: > http://127.0.0.1:8000/ > starting browser... > 2016-04-20 20:26:54,003 - Rocket.Errors.Port8000 - ERROR - Traceback (most > recent call last): > File "d:\code\git\web2py\gluon\rocket.py", line 587, in listen > sock, addr = self.listener.accept() > File "D:\programs\open\python27\lib\site-packages\gevent\socket.py", > line 316, in accept > self._wait(self._read_event) > File "D:\programs\open\python27\lib\site-packages\gevent\socket.py", > line 300, in _wait > self.hub.wait(watcher) > File "D:\programs\open\python27\lib\site-packages\gevent\hub.py", line > 348, in wait > result = waiter.get() > File "D:\programs\open\python27\lib\site-packages\gevent\hub.py", line > 575, in get > return self.hub.switch() > File "D:\programs\open\python27\lib\site-packages\gevent\hub.py", line > 338, in switch > return greenlet.switch(self) > LoopExit: This operation would block forever > > The error in the error-ticket is: > <class 'gevent.hub.LoopExit'> This operation would block forever > Version > web2py™ Version 2.14.3-stable+timestamp.2016.03.26.17.54.43 > Python Python 2.7.10: D:\programs\open\python27\python.exe (prefix: > D:\programs\open\python27) > Traceback > > > Traceback (most recent call last): > File "d:\code\git\web2py\gluon\restricted.py", line 227, in restricted > exec ccode in environment > File "d:/code/git/web2py/applications/myapp/controllers/myservice.py", > line 99, in <module> > File "d:\code\git\web2py\gluon\globals.py", line 417, in <lambda> > self._caller = lambda f: f() > File "d:\code\git\web2py\gluon\cache.py", line 661, in wrapped_f > rtn = func() > File "d:/code/git/web2py/applications/myapp/controllers/myservice.py", > line 68, in data > data = api.get_data(url) > File "applications\myapp\modules\data\api.py", line 145, in get_data > return _get_data_for(url) if url else None > File "applications\myapp\modules\data\api.py", line 164, in _get_data_for > force_reload=rebuild > File "applications\myapp\modules\myapp_constants.py", line 460, in > get_from_cache > cache_value = redis_cache.get(key) > File "D:\programs\open\python27\lib\site-packages\redis\client.py", line > 880, in get > return self.execute_command('GET', name) > File "D:\programs\open\python27\lib\site-packages\redis\client.py", line > 573, in execute_command > return self.parse_response(connection, command_name, **options) > File "D:\programs\open\python27\lib\site-packages\redis\client.py", line > 585, in parse_response > response = connection.read_response() > File "D:\programs\open\python27\lib\site-packages\redis\connection.py", > line 577, in read_response > response = self._parser.read_response() > File "D:\programs\open\python27\lib\site-packages\redis\connection.py", > line 238, in read_response > response = self._buffer.readline() > File "D:\programs\open\python27\lib\site-packages\redis\connection.py", > line 168, in readline > self._read_from_socket() > File "D:\programs\open\python27\lib\site-packages\redis\connection.py", > line 126, in _read_from_socket > data = self._sock.recv(socket_read_size) > File "D:\programs\open\python27\lib\site-packages\gevent\socket.py", > line 394, in recv > self._wait(self._read_event) > File "D:\programs\open\python27\lib\site-packages\gevent\socket.py", > line 300, in _wait > self.hub.wait(watcher) > File "D:\programs\open\python27\lib\site-packages\gevent\hub.py", line > 348, in wait > result = waiter.get() > File "D:\programs\open\python27\lib\site-packages\gevent\hub.py", line > 575, in get > return self.hub.switch() > File "D:\programs\open\python27\lib\site-packages\gevent\hub.py", line > 338, in switch > return greenlet.switch(self) > LoopExit: This operation would block forever > > I do not see this issue on my ubuntu linux deployment. > > I suspected, without any evidence, that it may have to do with > process/threading between the rocket server to redis_client, and that it > could do with the monkey_patching of socket in the gevent world. Again, I > do not have any evidence, other than the stacktrace. > > The knee-jerk reaction was to see if using uwsgi or nginx on windows > alleviates this issue. The nearest discussion thread, that I came across, > that talks about setting up such an environment (web2py without rocket, but > uwsgi / nginx) is this one: > https://groups.google.com/forum/#!searchin/web2py/nginx$20windows/web2py/NdV0CVX8zZs/wWiRxogLz4sJ > > Any thoughts on what I could do or take a look at will help. Thanks. > > In the meantime, I also intend to > > - create a minimal app that is able to recreate this issue. > - take a look at the web2py's redis-cache. > > -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. 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