Content-Length Handling

[cirospaciari]

When Content-Length mismatch happens with the provided value being bigger than the real value the connection is not closed.
The response is still correct with Content-Length: 26.

In this case meinheld, gunicorn and socketify would close the connection.

def app_hello(environ, start_response):
    start_response('200 OK', [('Content-Type', 'text/plain'), ('Content-Length', '30')])
    
    return [b'Hello, World!', b'Hello, World!']

If the real response is bigger than the Content-Length provided, meinheld and gunicorn will just end the response when reaches the length provided.

def app_hello(environ, start_response):
    start_response('200 OK', [('Content-Type', 'text/plain'), ('Content-Length', '24')])
    
    return [b'Hello, World!', b'Hello, World!']

fastWSGI close the connection in this case, socketify also does this, and I think is better to close and emit a warning when Content-Length mismatch happens.

But in case the Content-Length is bigger than the real response, I think that should be better to also close the connection to keep the same behavior and to warn that something that the user/framework wants to send will not be sent.