On Dec 15, 2005, at 3:01 PM, Jim Fulton wrote:
> Normally an application will call the start_response callable when the
> application is called or when the result iterator is constructed, as
> shown in the first 2 examples. An application, or more commonly, a
> middleware component that provides it's own thread management might
> delay starting the response. A server should not begin iterating
> over the result until the start_response callable has been called."
But it's my understanding that this is valid:
def test_calledStartResponseLate(self):
def application(environ, start_response):
start_response("200 OK", {})
yield "Foo"
start_response is called _inside_ the first iteration of the result.
So the server has to iterate at least once, even if start_response
was not called...
I was led to believe this was a valid thing to do from the following
wording:
> (Note: the application must invoke the start_response() callable
> before the iterable yields its first body string, so that the
> server can send the headers before any body content. However, this
> invocation may be performed by the iterable's first iteration, so
> servers must not assume that start_response() has been called
> before they begin iterating over the iterable.)
James
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