cite some refernces for this

http.py

@@ -11,7 +11,7 @@ from io import StringIO
 from email.utils import formatdate
 
 Fork = False
-# The next post in this series,which now has the name
+# The next post in this series, which now has the name
 # __The Network Programing Purgatorio__ by the way.
 # Was originally going to be about how to use TLS
 # But it turns out just kinda faking your http implementation
@@ -19,7 +19,7 @@ Fork = False
 # and security.
 
 # Thus we have to devote some time and energy to making
-# a better fake http. We're still going to employ some
+# a more robust, but still fake http. We're still going to employ some
 # dirty tricks here.
 # At this point there if you didn't read Greg the Manokit's
 # Warning at the top of the page
@@ -38,6 +38,9 @@ Fork = False
 # client's code in a public project.
 # Thus cut 'n' paste.
 
+CRLF = "\r\n"
+LF = "\n"
+
 
 class AccessDict(dict):
     def __init__(self, *args, **kwargs):
@@ -83,6 +86,8 @@ class HttpRequest(AccessDict):
         self["headers"] = headers
         self["body"] = StringIO(body)
         self["path"] = path
+        if "Host" not in self["headers"]:
+            self["headers"]["Host"] = "localhost"
 
     def read(self, seek):
         return self["body"].read(seek)
@@ -92,6 +97,7 @@ class HttpRequest(AccessDict):
         buf.write(f"{self.method} {self.path} HTTP/1.1")
         for k, v in self["headers"].items():
             buf.write(f"{k}: {v}\r\n")
+        buf.write(CRLF + CRLF)
         buf.write(self["body"].getvalue() + "\r\n")
         return buf.getvalue() + "\r\n"
 
@@ -115,14 +121,17 @@ class HttpResponse(AccessDict):
     def write(self, stuff):
         return self.body.write(stuff)
 
+    # Foreshadowing (n): A literary device in which an author ...
     def __str__(self):
         buf = StringIO()
         print(self.headers)
-        buf.write(f"HTTP/1.1 {self.status}\r\n ")
+        buf.write(f"HTTP/1.1 {self.status}\r\n")
         length = len(self["body"].getvalue())
         for k, v in self["headers"].items():
             buf.write(f"{k}: {v}\r\n")
         buf.write(f"Content-Length: {length}\r\n")
+        buf.write(CRLF + CRLF)  # Per RFC 9112
+
         buf.write(self["body"].getvalue() + "\r\n")
         return buf.getvalue() + "\r\n"
 
@@ -201,6 +210,17 @@ def server_handler():
 
 
 # I made two simple changes to make it use our new http objects
+# This will still accept anything as long as the method verb
+# is correct. Clients need not conform to RFC 9112 (yet).
+# We however, do our best effort to conform to rfc 9112,
+# when sending responses.
+#
+# The principal of being lienant in what you accept from
+# the client, but strict in what you send back, was first
+# was first forumlated by John Postel in that later half
+# of the 1970s.
+
+# Doing this, is also motivation for me to write Parts 4, 5, and 6
 
 
 def client_handler(sock):
@@ -257,12 +277,15 @@ else:
 # To recap we just did a bunch of work, for no user visible change
 # This is not a bad thing, often the first drafts of programs.
 # Will fit the requirements of the moment. But when the requirements
-# change the program must be adapted to fit.abs
+# change the program must be adapted to fit.
 # This process of iteration and redesign,
 # is called "paying down technical debt", and it should be done whenever
 # possible.
 #
+# And we've just moved up to the second level of the 7 story mountain
+# Yay us.
 #
 # References
-# MDN Web Docs
+# Robustness Principal (Devopedia): https://devopedia.org/postel-s-law
+# IETF RFC 9112 HTTP/1.1 https://datatracker.ietf.org/doc/html/rfc9112
 #