fix to examples/webproxy.py to be runnable by external WSGI servers

41d4fdf0 · Denis Bilenko · 61c768b4 · 41d4fdf0
Commit 41d4fdf0 authored Sep 15, 2010 by Denis Bilenko
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Showing with 18 additions and 8 deletions

examples/webproxy.py examples/webproxy.py +18 -8

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--- a/examples/webproxy.py
+++ b/examples/webproxy.py
-#!/usr/bin/python
+#!/usr/bin/env python
+"""A web application that retrieves other websites for you.
+
+To start serving the application on port 8088, type
+
+  python webproxy.py
+
+To start the server on some other interface/port, use
+
+  python -m gevent.wsgi -p 8000 -i 0.0.0.0 webproxy.py
+
+"""
 from gevent import monkey; monkey.patch_all()
 from gevent import wsgi
 import sys
@@ -9,12 +20,11 @@ from urlparse import urlparse
 from cgi import escape
 from urllib import unquote

-
 PORT = 8088
-PROXY_URL = 'http://127.0.0.1:%s/' % PORT


 def application(env, start_response):
+    proxy_url = 'http://%s/' % env['HTTP_HOST']
    method = env['REQUEST_METHOD']
    path = env['PATH_INFO']
    if env['QUERY_STRING']:
@@ -24,11 +34,11 @@ def application(env, start_response):
        start_response('200 OK', [('Content-Type', 'text/html')])
        return [FORM]
    elif method == 'GET':
-        return proxy(path, start_response)
+        return proxy(path, start_response, proxy_url)
    elif (method, path) == ('POST', ''):
        key, value = env['wsgi.input'].read().strip().split('=')
        assert key == 'url', repr(key)
-        start_response('302 Found', [('Location', join(PROXY_URL, unquote(value)))])
+        start_response('302 Found', [('Location', join(proxy_url, unquote(value)))])
    elif method == 'POST':
        start_response('404 Not Found', [])
    else:
@@ -36,7 +46,7 @@ def application(env, start_response):
    return []


-def proxy(path, start_response):
+def proxy(path, start_response, proxy_url):
    if '://' not in path:
        path = 'http://' + path
    try:
@@ -58,7 +68,7 @@ def proxy(path, start_response):
    else:
        start_response('%s %s' % (response.code, response.msg), headers)
        data = response.read()
-        data = fix_links(data, PROXY_URL, host)
+        data = fix_links(data, proxy_url, host)
        return [data]


@@ -105,7 +115,7 @@ FORM = """<html><head>
 <tr height=30%><td align=center valign=bottom>Type in URL you want to visit and press Enter</td></tr>
 <tr><td align=center valign=top>
 <form action=/ method=post>
-<input size=80 name=url value="http://www.google.com"/>
+<input size=80 name=url value="http://www.gevent.org"/>
 </form>
 </td></tr>
 </table></body></table>