[Web-SIG] Generator-Based Applications: Marrow HTTPd Example

[Alice Bevan–McGregor]

Howdy!

Here's a rewritten (and incomplete, but GET and HEAD requests work 
fine) marrow.server.http branch [1] that illustrates a simple 
application [2] and protocol implementation [3].  Most notably, examine 
the 'resume' method [4].

The 'basic' example yields a future instance and uses the data as the 
response body.

Note that this particular rewrite is not complete, nor has it been 
profiled and optimized; initial benchmarks (using the 'benchmark' 
example) show a reduction of ~600 RSecs from the 'draft' branch, which 
is substantial, but hasn't been traced to a particular segment of code 
or design decision yet.

The server is now -extremely- easy to read and follow, with all code 
acting in a linear way.  (Application worker threading has been removed 
from this branch as well; the server is once again purely async.)

	- Alice.

[1] https://github.com/pulp/marrow.server.http/tree/generator

[2] https://github.com/pulp/marrow.server.http/blob/generator/examples/basic.py

[3] 
https://github.com/pulp/marrow.server.http/blob/generator/marrow/server/http/protocol.py

[4] 

https://github.com/pulp/marrow.server.http/blob/generator/marrow/server/http/protocol.py#L177-226