pigeon768
l33t
Joined: 02 Jan 2006
Posts: 683
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 Posted: Mon Sep 19, 2011 4:27 pm Post subject: nginx + uwsgi + python [WORKAROUND] |
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So I'm trying to cobble together a webserver using nginx + python, and am having problems.
/etc/nginx/nginx.conf: | Code: | user nginx nginx;
worker_processes 4;
error_log /var/log/nginx/error_log info;
events {
worker_connections 1024;
use epoll;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
log_format main
'$remote_addr - $remote_user [$time_local] '
'"$request" $status $bytes_sent '
'"$http_referer" "$http_user_agent" '
'"$gzip_ratio"';
client_header_timeout 10m;
client_body_timeout 10m;
send_timeout 10m;
connection_pool_size 256;
client_header_buffer_size 1k;
large_client_header_buffers 4 2k;
request_pool_size 4k;
gzip on;
gzip_min_length 1100;
gzip_buffers 4 8k;
gzip_types text/plain;
output_buffers 1 32k;
postpone_output 1460;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 75 20;
ignore_invalid_headers on;
index index.html;
server {
listen 80;
server_name localhost 127.0.0.1;
access_log /var/log/nginx/localhost.access_log main;
error_log /var/log/nginx/localhost.error_log info;
root /var/www/localhost/htdocs/;
location /static/ {
expires 30d;
}
location / {
include uwsgi_params;
uwsgi_pass 127.0.0.1:8080;
}
}
} |
webpy.py: | Code: | #!/usr/bin/python3
from wsgiref.simple_server import make_server
def application(env,start_response):
status = '200 OK' # HTTP Status
headers = [('Content-type', 'text/html; charset=utf-8')] # HTTP Headers
start_response(status, headers)
query_args = { arg[ 0:arg.find("=",1,-1) ]
: arg[ arg.find("=",1,-1)+1 : len(arg) ]
for arg in env["QUERY_STRING"].split("&")
if arg.find("=",1,-1) > 0 }
ret_string = """
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<style>
html { background-image: url(/static/background.jpg); }
body { color: red; }
</style>
<title>
Hello world!
</title>
<body>
<p>Some text here.</p>
"""
ret_string += "<p>PATH_INFO: " + env["PATH_INFO"] + "</p>"
for key,val in query_args.items():
ret_string += "<p>" + key + ":" + val + "</p>"
ret_string += "</body></html>"
return [bytes(ret_string,"utf-8")]
httpd = make_server('127.0.0.1', 8080, application)
httpd.serve_forever() |
When I point my browser at http://localhost:8080/ (the python application) everything works: | Code: | localhost - - [19/Sep/2011 09:10:03] "GET / HTTP/1.1" 200 252
localhost - - [19/Sep/2011 09:10:03] "GET /static/background.jpg HTTP/1.1" 200 273 |
And I get a web page. If I point my browser at http://localhost/ (nginx) the python app complains: | Code: | localhost - - [19/Sep/2011 09:12:57] code 400, message Bad request syntax ('\x00\x81\x02\x00\x0c\x00QUERY_STRING\x00\x00\x0e\x00REQUEST_METHOD\x03\x00GET\x0c\x00CONTENT_TYPE\x00\x00\x0e\x00CONTENT_LENGTH\x00\x00\x0b\x00REQUEST_URI\x01\x00/\t\x00PATH_INFO\x01\x00/\r\x00DOCUMENT_ROOT\x19\x00/var/www/localhost/htdocs\x0f\x00SERVER_PROTOCOL\x08\x00HTTP/1.1\x0b\x00REMOTE_ADDR\t\x00127.0.0.1\x0b\x00REMOTE_PORT\x05\x0033891\x0b\x00SERVER_PORT\x02\x0080\x0b\x00SERVER_NAME\t\x00localhost\t\x00HTTP_HOST\t\x00localhost\x0f\x00HTTP_USER_AGENTB\x00Mozilla/5.0 (X11; Linux x86_64; rv:6.0) Gecko/20100101 Firefox/6.0\x0b\x00HTTP_ACCEPT?\x00text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\x14\x00HTTP_ACCEPT_LANGUAGE\x0e\x00en-us,en;q=0.5\x14\x00HTTP_ACCEPT_ENCODING\r\x00gzip, deflate\x13\x00HTTP_ACCEPT_CHARSET\x1e\x00ISO-8859-1,utf-8;q=0.7,*;q=0.7\x08\x00HTTP_DNT\x01\x001\x0f\x00HTTP_CONNECTION')
localhost - - [19/Sep/2011 09:12:57] "QUERY_STRINGREQUEST_METHODGETCONTENT_TYPECONTENT_LENGTHREQUEST_URI/ PDOCUMENT_ROOT/var/www/localhost/htdocsSERVER_PROTOCOHTTP/1.1REMOTE_ADDR 127.0.0.1REMOTE_PORT33891SERVER_PORT80SERVER_NAME localhost HTTP_HOST localhostHTTP_USER_AGENTBMozilla/5.0 (X11; Linux x86_64; rv:6.0) Gecko/20100101 Firefox/6.0HTTP_ACCEPT?text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8HTTP_ACCEPT_gzip, deflateHTTP_ACCEPT_CHARSETISO-8859-1,utf-8;q=0.7,*;q=0.HTTP_DNT1HTTP_CONNECTION" 400 - |
...and nginx complains about the web app: | Code: | | 2011/09/19 09:12:57 [error] 6002#0: *16 upstream prematurely closed connection while reading response header from upstream, client: 127.0.0.1, server: localhost, request: "GET / HTTP/1.1", upstream: "uwsgi://127.0.0.1:8080", host: "localhost" |
..and after a while I get a 502: Bad Gateway error from nginx in the browser.
Help!
Is it maybe because the python application is serving http:// and nginx is asking for uwsgi:// ? How do I get wsgiref to serve wsgi?
edit: nginx serves everything from /static/ just fine. Obviously the python application doesn't serve anything from /static/.
edit2: Using www-servers/uwsgi. Not in the python standard library but appears to be supported well enough. webpy.py is now: | Code: | import uwsgi
def application(env,start_response):
status = '200 OK' # HTTP Status
headers = [('Content-type', 'text/html; charset=utf-8')] # HTTP Headers
start_response(status, headers)
query_args = { arg[ 0:arg.find("=",1,-1) ]
: arg[ arg.find("=",1,-1)+1 : len(arg) ]
for arg in env["QUERY_STRING"].split("&")
if arg.find("=",1,-1) > 0 }
ret_string = """
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<style>
html { background-image: url(/static/background.jpg); }
body { color: red; }
</style>
<title>
Hello world!
</title>
<body>
<p>Some text here.</p>
"""
ret_string += "<p>PATH_INFO: " + env["PATH_INFO"] + "</p>"
for key,val in query_args.items():
ret_string += "<p>" + key + ":" + val + "</p>"
ret_string += "</body></html>"
return [bytes(ret_string,"utf-8")] |
and run with: | Code: | | uwsgi-3.2 --socket 127.0.0.1:8080 --file webpy.py --callable application |
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