use PORT variable if available

Author: aaronsw

web/wsgi.py

@@ -7,7 +7,7 @@
 
 import http
 import webapi as web
-from utils import listget
+from utils import listget, intget
 from net import validaddr, validip
 import httpserver
 
@@ -51,7 +51,12 @@ def runwsgi(func):
  else:
  return runscgi(func)
 
- return httpserver.runsimple(func, validip(listget(sys.argv, 1, '')))
+ 
+ server_addr = validip(listget(sys.argv, 1, ''))
+ if os.environ.has_key('PORT'): # e.g. Heroku
+ server_addr = ('0.0.0.0', intget(os.environ['PORT']))
+ 
+ return httpserver.runsimple(func, server_addr)
 
 def _is_dev_mode():
  # Some embedded python interpreters won't have sys.arv