Commits on Sep 13, 2021

1. wsgi: Don't break HTTP framing during 100-continue handling …

   Expect: 100-continue is a funny beast -- the client sends it to indicate
   that it's willing to wait for an early error, but
   
   - the client has no guarantee that the server supports 100 Continue,
   - the server gets no indication of how long the client's willing to wait
     for the go/no-go response, and
   - even if it did, the server has no way of knowing that the response it
     *emitted* within that time was actually *received* within that time
   - so the client may have started sending the body regardless of what the
     server's done.
   
   As a result, the server only has two options when it *does not* send the
   100 Continue response:
   
   - close the socket
   - read and discard the request body
   
   Previously, we did neither of these things; as a result, a request body
   could be interpreted as a new request. Now, close out the connection,
   including sending a `Connection: close` header when practical.

   

   tipabu committed Sep 13, 2021
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