What will happen if client request larger than 4096?

Hello,
In function do_scheduled_stream file io.c, the handler is called  
immediately after a READ. And the default length seems to be 4096. I tried  
to make a request with very large cookie, it didn't get the right  
response. Is it a bug?
Also, I wonder will recv function receive the whole request at one time?  
Is it possible that only receive partial request data?

-- Ir193

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