Can Hendrix and Nginx work together? - nginx

Question

I need push message from backend to frontend in Django, finally I found this Twisted + Django server but in product env we use nginx to proxy request to Django, I'm confused can hendrix and nginx work together?
If yes, then what how to write nginx.conf?

Answer 1

Yep, you can use nginx to proxy pass to hendrix the same way as you do with any other WSGI/ASGI container.
This Question has sample config for doing this.

Answer 2

today i try to change my original nginx config to reverse proxy hendrix, here is some snippets:
upstream django {
server localhost:8000;
}
server {
listen 80;
server_name localhost;
location /static/ {
#root /var/www;
alias /var/www/static;
}
location / {
proxy_pass http://django;
proxy_pass_header Server;
proxy_set_header Host $host;
proxy_redirect off;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
}
}
then i restart nginx and start hendrix: hx start --log ./test.log
it worked finally, but i found some warning message:
*
WebSocket connection to '...' failed: Error during WebSocket
handshake: 'Connection' header value is not 'Upgrade': keep-alive
socket.io.js:2371
*
after some google message, i found nginx version must higher 1.3.13, so i update nginx to 1.10.1(stable), warning message disappear.
but if want use hendrix in my production env, multi hendrix-worker needed, so i try: hx start -w 2, failed output:
root#proxy:/vagrant/hendrix_taste/hendrix/examples/django_hx_chatserver/example_app# hx start -w 2
Adding media resource for URL 'static' at path '/vagrant/hendrix_taste/hendrix/examples/django_hx_chatserver/example_app/servedstatics'
...
Adding media resource for URL 'static/admin' at path '/usr/local/lib/python2.7/dist-
'/vagrant/hendrix_taste/hendrix/examples/django_hx_chatserver/example_app/chat/static/chat/js'
Ready and Listening on port 8000...
{0: 0, 1: 1, 2: 2, 4: 4}
{'main_web_tcp': 4}
Unhandled Error
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/hendrix/deploy/base.py", line 180, in run
getattr(self, action)(fd)
File "/usr/local/lib/python2.7/dist-packages/hendrix/deploy/base.py", line 226, in start
self.launchWorkers(pids)
File "/usr/local/lib/python2.7/dist-packages/hendrix/deploy/base.py", line 265, in launchWorkers
DeployServerProtocol(args), 'hx', args, childFDs=self.childFDs, env=environ
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/posixbase.py", line 340, in spawnProcess
processProtocol, uid, gid, childFDs)
--- <exception caught here> ---
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/process.py", line 756, in __init__
self.proto.makeConnection(self)
exceptions.AttributeError: 'DeployServerProtocol' object has no attribute 'makeConnection'
Unhandled Error
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/hendrix/deploy/base.py", line 180, in run
getattr(self, action)(fd)
File "/usr/local/lib/python2.7/dist-packages/hendrix/deploy/base.py", line 226, in start
self.launchWorkers(pids)
File "/usr/local/lib/python2.7/dist-packages/hendrix/deploy/base.py", line 265, in launchWorkers
DeployServerProtocol(args), 'hx', args, childFDs=self.childFDs, env=environ
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/posixbase.py", line 340, in spawnProcess
processProtocol, uid, gid, childFDs)
--- <exception caught here> ---
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/process.py", line 756, in __init__
self.proto.makeConnection(self)
exceptions.AttributeError: 'DeployServerProtocol' object has no attribute 'makeConnection'
Adding media resource for URL 'static' at path '/vagrant/hendrix_taste/hendrix/examples/django_hx_chatserver/example_app/servedstatics'
...
Ready and Listening on port 8000...
Unhandled error in Deferred:
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/defer.py", line 317, in addCallback
callbackKeywords=kw)
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/defer.py", line 306, in addCallbacks
self._runCallbacks()
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/defer.py", line 588, in _runCallbacks
current.result = callback(current.result, *args, **kw)
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1313, in execute
d = maybeDeferred(f, *args, **kwargs)
--- <exception caught here> ---
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/defer.py", line 150, in maybeDeferred
result = f(*args, **kw)
exceptions.TypeError: _addSubprocess() takes exactly 4 arguments (5 given)
Temporarily disabling observer <twisted.logger._filter.FilteringLogObserver object at 0x20bac50> due to exception: [Failure instance: Traceback: <type 'exceptions.AttributeError'>: 'NoneType' object has no attribute '_formatter_parser'
/usr/local/lib/python2.7/dist-packages/hendrix/deploy/base.py:283:addSubprocess
/usr/local/lib/python2.7/dist-packages/twisted/internet/defer.py:707:__del__
/usr/local/lib/python2.7/dist-packages/twisted/logger/_logger.py:178:failure
/usr/local/lib/python2.7/dist-packages/twisted/logger/_logger.py:132:emit
--- <exception caught here> ---
/usr/local/lib/python2.7/dist-packages/twisted/logger/_observer.py:131:__call__
/usr/local/lib/python2.7/dist-packages/twisted/logger/_filter.py:131:__call__
/usr/local/lib/python2.7/dist-packages/twisted/logger/_file.py:50:__call__
/usr/local/lib/python2.7/dist-packages/twisted/logger/_json.py:245:<lambda>
/usr/local/lib/python2.7/dist-packages/twisted/logger/_json.py:196:eventAsJSON
/usr/local/lib/python2.7/dist-packages/twisted/logger/_flatten.py:87:flattenEvent
/usr/lib/python2.7/string.py:621:parse
]
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/hendrix/deploy/base.py", line 283, in addSubprocess
self._lock.run(self._addSubprocess, self, fds, name, factory)
File "/usr/local/lib/python2.7/dist-packages/twisted/internet/defer.py", line 707, in __del__
debugInfo=debugInfo)
File "/usr/local/lib/python2.7/dist-packages/twisted/logger/_logger.py", line 178, in failure
self.emit(level, format, log_failure=failure, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/twisted/logger/_logger.py", line 132, in emit
self.observer(event)
--- <exception caught here> ---
File "/usr/local/lib/python2.7/dist-packages/twisted/logger/_observer.py", line 131, in __call__
observer(event)
File "/usr/local/lib/python2.7/dist-packages/twisted/logger/_filter.py", line 131, in __call__
self._observer(event)
File "/usr/local/lib/python2.7/dist-packages/twisted/logger/_file.py", line 50, in __call__
text = self.formatEvent(event)
File "/usr/local/lib/python2.7/dist-packages/twisted/logger/_json.py", line 245, in <lambda>
lambda event: u"{0}{1}\n".format(recordSeparator, eventAsJSON(event))
File "/usr/local/lib/python2.7/dist-packages/twisted/logger/_json.py", line 196, in eventAsJSON
flattenEvent(event)
File "/usr/local/lib/python2.7/dist-packages/twisted/logger/_flatten.py", line 87, in flattenEvent
aFormatter.parse(event["log_format"])
File "/usr/lib/python2.7/string.py", line 621, in parse
return format_string._formatter_parser()
exceptions.At
my python packages:
pip freeze
Warning: cannot find svn location for distribute==0.6.24dev-r0
Automat==0.3.0
Django==1.8.11
GnuPGInterface==0.3.2
Jinja2==2.9.4
MarkupSafe==0.23
PyYAML==3.12
Twisted==16.0.0
apt-xapian-index==0.44
argh==0.26.2
argparse==1.2.1
attrs==16.3.0
characteristic==14.3.0
chardet==2.0.1
command-not-found==0.2.44
configobj==4.7.2
constantly==15.1.0
decorator==3.3.2
## FIXME: could not find svn URL in dependency_links for this package:
distribute==0.6.24dev-r0
hendrix==2.0.2
incremental==16.10.1
ipython==0.12.1
language-selector==0.1
pathtools==0.1.2
pexpect==2.3
pyOpenSSL==16.2.0
pyasn1==0.1.9
pyasn1-modules==0.0.8
pychalk==0.0.5
python-apt==0.8.3ubuntu7.1
python-debian==0.1.21ubuntu1
service-identity==16.0.0
simplegeneric==0.7
six==1.10.0
txsockjs==1.2.2
ufw==0.31.1-1
virtualenv==15.1.0
watchdog==0.8.3
wsgiref==0.1.2
zope.interface==4.0.5