diff --git a/http_server.py b/http_server.py
index 58d7386..07260cf 100644
--- a/http_server.py
+++ b/http_server.py
@@ -1,6 +1,9 @@
-import socket
+import os
 import sys
+import socket
+import mimetypes
 import traceback
+from pathlib import Path
 
 def response_ok(body=b"This is a minimal response", mimetype=b"text/plain"):
     """
@@ -20,20 +23,30 @@ 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"
+        ])
 
 
 def parse_request(request):
@@ -45,7 +58,12 @@ def parse_request(request):
     """
 
     # 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):
     """
@@ -85,10 +103,43 @@ def response_path(path):
     # 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"
 
+
+    #root_dir = os.path.dirname(os.path.realpath(__file__)) + "/webroot/"
+    root_dir = os.path.dirname(os.path.realpath(__file__))
+
+    if path =="" or path =="/":
+        with open(root_dir + "/index.html", "r") as f:
+            content = f.read().encode()
+            content += "\r\n".join(os.listdir(root_dir + "/webroot/")).encode()   
+    elif path.endswith(".py"):
+        content = open(root_dir + "/make_time.py").read()
+        exec(content)
+        content = content.encode()
+    else:
+        whole_path = Path(root_dir + "/webroot/" + path)
+    
+        try:
+            assert os.path.exists(whole_path)
+        except AssertionError:
+            raise NameError
+        else:
+            if os.path.isfile(whole_path):
+                with open(whole_path, "rb") as f:
+                    content = f.read()
+            else:
+                content = "\r\n".join(os.listdir(whole_path)).encode()   
+
+    mime_type = b"text/plain"
+    if path.endswith(".html") or path.endswith('.htm') or path.endswith('') or path.endswith('/') or path.endswith('/') :
+        mime_type = b"text/html"
+    if path.endswith(".txt"):
+        mime_type = b"text/plain"
+    if path.endswith(".png"):
+        mime_type = b"image/png"
+    if path.endswith(".jpg"):
+        mime_type = b"image/jpeg"
+       
     return content, mime_type
 
 
@@ -118,22 +169,33 @@ def server(log_buffer=sys.stderr):
 
                 print("Request received:\n{}\n\n".format(request))
 
-                # TODO: Use parse_request to retrieve the path from the request.
+                try:
+                    path = parse_request(request)
+
+                    content, mime_type = response_path(path)
+                        # 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: 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"
-                )
+                        # 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= content,
+                        mimetype= mime_type
+                        )
+
+                except NotImplementedError:
+                    response = response_method_not_allowed()
+
+                except NameError:
+                    response = response_not_found()
 
                 conn.sendall(response)
+
             except:
                 traceback.print_exc()
             finally:
diff --git a/index.html b/index.html
new file mode 100644
index 0000000..f8a60cc
--- /dev/null
+++ b/index.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Internet Programming in Python: CGI</title>
+  </head>
+  <body>
+    <h1>Internet Programming in Python</h1>
+    <h2>socket-http-server assignment</h2>
+      <ol>
+        <li><a href="a_web_page.html">a_web_page.html</a></li>
+        <li><a href="/images/JPEG_example.jpg">JPEG_example</a></li>
+        <li><a href="sample.txt">sample.txt</a></li>
+        <li><a href="/images/sample_1.png">sample_1.png</a></li>
+        <li><a href="/images/Sample_Scene_Balls.jpg">Sample_Scene_Balls.jpg</a></li>
+        <li><a href="cgi-bin/make_time.py">make_time.py</a></li>
+      </ol>
+  </body>
+</html>
\ No newline at end of file
diff --git a/webroot/make_time.py b/make_time.py
similarity index 100%
rename from webroot/make_time.py
rename to make_time.py