Revision 142133fb

b/snf-django-lib/snf_django/lib/api/proxy/__init__.py
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import urllib
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import urlparse
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# We use proxy to delegate requests to another domain. Sending host specific


  		





  
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# headers (Host, Cookie) may cause confusion to the server we proxy to.


  		





  
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#


  		





  
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# http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.10


  		





  
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# Connection and MUST NOT be communicated by proxies over further connections


  		





  
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EXCLUDE_HEADERS = ['Host', 'Cookie', 'Connection']


  		





  
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def proxy(request, target):


  		





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    kwargs = {}


  		





  ......




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                   filter(lambda (k, v): forward_header(k),


  		





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                          request.META.iteritems())))


  		





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    # set X-Forwarded-For, if already set, pass it through, otherwise set it


  		





  
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    # to the current request remote address


  		





  
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    SOURCE_IP = request.META.get('REMOTE_ADDR', None)


  		





  
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    if SOURCE_IP and not 'X-Forwarded-For' in headers:


  		





  
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        headers['X-Forwarded-For'] = SOURCE_IP


  		





  
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    # request.META remains cleanup


  		





  
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    for k in headers.keys():


  		





  
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        if '_' in k:


  		





  
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            headers.pop(k)


  		





  
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    for k in EXCLUDE_HEADERS:


  		





  
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        headers.pop(k, None)


  		





  
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    kwargs['headers'] = headers


  		





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    kwargs['body'] = request.raw_post_data


  		





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      b/snf-django-lib/snf_django/lib/api/proxy/utils.py
    
  






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    prefix = 'HTTP_'


  		





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    if k.startswith(prefix):


  		





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        k = k[len(prefix):].title().replace('_', '-')


  		





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    elif k in ('CONTENT_TYPE', 'CONTENT_LENGTH'):


  		





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        k = k.replace('_', '-')


  		





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    return k, v


  		





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def forward_header(k):


  		





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    return k.lower() != "HOST" and not is_hop_by_hop(k)


  		





  
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    return k.upper() not in ['HOST', 'CONTENT_LENGTH', 'CONTENT_TYPE'] and \


  		





  
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           not is_hop_by_hop(k) and not '.' in k


  		












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