diff --git a/http_server.py b/http_server.py
index 58d7386..b96aa40 100644
--- a/http_server.py
+++ b/http_server.py
@@ -1,6 +1,11 @@
 import socket
 import sys
 import traceback
+import mimetypes
+import os
+import contextlib
+import io
+
 
 def response_ok(body=b"This is a minimal response", mimetype=b"text/plain"):
     """
@@ -19,21 +24,32 @@ def response_ok(body=b"This is a minimal response", mimetype=b"text/plain"):
         '''
     """
 
-    # TODO: Implement response_ok
-    return b""
+    return b"\r\n".join([
+        b"HTTP/1.1 200 OK",
+        b"Content-Type: " + mimetype,
+        b"",
+        body
+    ])
+
 
 def response_method_not_allowed():
     """Returns a 405 Method Not Allowed response"""
 
-    # TODO: Implement response_method_not_allowed
-    return b""
+    return b"\r\n".join([
+        b"HTTP/1.1 405 Method Not Allowed",
+        b"",
+        b"You can't do that on this server!"
+    ])
 
 
 def response_not_found():
     """Returns a 404 Not Found response"""
 
-    # TODO: Implement response_not_found
-    return b""
+    return b"\r\n".join([
+        b"HTTP/1.1 404 Not Found",
+        b"",
+        b"That file isn't on this server!"
+    ])
 
 
 def parse_request(request):
@@ -44,8 +60,13 @@ def parse_request(request):
     NotImplementedError if the method of the request is not GET.
     """
 
-    # TODO: implement parse_request
-    return ""
+    method, path, version = request.split("\r\n")[0].split(" ")
+
+    if method != 'GET':
+        raise NotImplementedError
+
+    return path
+
 
 def response_path(path):
     """
@@ -75,19 +96,23 @@ def response_path(path):
 
     """
 
-    # TODO: Raise a NameError if the requested content is not present
-    # under webroot.
-
-    # TODO: Fill in the appropriate content and mime_type give the path.
-    # See the assignment guidelines for help on "mapping mime-types", though
-    # you might need to create a special case for handling make_time.py
-    #
-    # If the path is "make_time.py", then you may OPTIONALLY return the
-    # result of executing `make_time.py`. But you need only return the
-    # CONTENTS of `make_time.py`.
-    
-    content = b"not implemented"
-    mime_type = b"not implemented"
+    local_path = os.path.join('webroot', *path.split('/'))
+    if os.path.isfile(local_path):
+        mime_type = mimetypes.guess_type(local_path)[0].encode()
+        if mime_type == b'text/x-python':
+            f = io.StringIO()
+            with contextlib.redirect_stdout(f):
+                exec(open(local_path).read())
+            content = f.getvalue().encode()
+            mime_type = b"text/html"
+        else:
+            with open(local_path, 'rb') as f:
+                content = f.read()
+    elif os.path.isdir(local_path):
+        content = ', '.join(os.listdir(local_path)).encode()
+        mime_type = b'text/plain'
+    else:
+        raise NameError
 
     return content, mime_type
 
@@ -114,24 +139,17 @@ def server(log_buffer=sys.stderr):
 
                     if '\r\n\r\n' in request:
                         break
-		
 
                 print("Request received:\n{}\n\n".format(request))
 
-                # TODO: Use parse_request to retrieve the path from the request.
-
-                # TODO: Use response_path to retrieve the content and the mimetype,
-                # based on the request path.
-
-                # TODO; If parse_request raised a NotImplementedError, then let
-                # response be a method_not_allowed response. If response_path raised
-                # a NameError, then let response be a not_found response. Else,
-                # use the content and mimetype from response_path to build a 
-                # response_ok.
-                response = response_ok(
-                    body=b"Welcome to my web server",
-                    mimetype=b"text/plain"
-                )
+                try:
+                    path = parse_request(request)
+                    body, mimetype = response_path(path)
+                    response = response_ok(body,mimetype)
+                except NotImplementedError:
+                    response = response_method_not_allowed()
+                except NameError:
+                    response = response_not_found()
 
                 conn.sendall(response)
             except: