forked from pcewebpython/socket-http-server
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathhttp_server.py
195 lines (153 loc) · 5.14 KB
/
http_server.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
import socket
import sys
import traceback
import os
import mimetypes
def response_ok(body=b"This is a minimal response", mimetype=b"text/plain"):
"""
returns a basic HTTP response
Ex:
response_ok(
b"<html><h1>Welcome:</h1></html>",
b"text/html"
) ->
b'''
HTTP/1.1 200 OK\r\n
Content-Type: text/html\r\n
\r\n
<html><h1>Welcome:</h1></html>\r\n
'''
"""
return b"\r\n".join([
b"HTTP/1.1 200 OK",
b"Content-Type: " + mimetype + b"\r\n",
body,
])
def response_method_not_allowed():
"""Returns a 405 Method Not Allowed response"""
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"""
return b"\r\n".join([
b"HTTP/1.1 404 Not Found",
b"",
b"Error encountered while visiting "
])
def parse_request(request):
"""
Given the content of an HTTP request, returns the path of that request.
This server only handles GET requests, so this method shall raise a
NotImplementedError if the method of the request is not GET.
"""
method, path, version = request.split("\r\n")[0].split(" ")
if method != "GET":
raise NotImplementedError
return path
def read_file(file_name):
'''
Read the provided file as bytes and return content
return byte string
'''
try:
with open(file_name, "rb") as f:
content = f.read()
except PermissionError:
content = 'directory'
return content
def contents_to_bytes(path, file_name):
'''
Converts the directory list to byte string
'''
try:
file_path = os.path.join(path, file_name)
files = os.listdir(file_path)
contents = ''.join(files).encode('utf-8')
except NotADirectoryError:
raise NotADirectoryError
return contents
def response_path(path):
"""
This method should return appropriate content and a mime type.
If the requested path is a directory, then the content should be a
plain-text listing of the contents with mimetype `text/plain`.
If the path is a file, it should return the contents of that file
and its correct mimetype.
If the path does not map to a real location, it should raise an
exception that the server can catch to return a 404 response.
Ex:
response_path('/a_web_page.html') -> (b"<html><h1>North Carolina...",
b"text/html")
response_path('/images/sample_1.png')
-> (b"A12BCF...", # contents of sample_1.png
b"image/png")
response_path('/') -> (b"images/, a_web_page.html, make_type.py,...",
b"text/plain")
response_path('/a_page_that_doesnt_exist.html') -> Raises a NameError
"""
content = b"not implemented"
mime_type = b"not implemented"
path_1 = path.strip("/")
path_2 = os.path.join(
os.getcwd(),
'socket-http-server',
'webroot'
)
try:
content = contents_to_bytes(path_2, path_1)
mime_type = b"text/plain"
except NotADirectoryError:
guess_type = mimetypes.guess_type(path_1)[0]
content = read_file(os.path.join(path_2, path_1))
mime_type = guess_type.encode('utf-8')
except FileNotFoundError:
raise NameError
return content, mime_type
def server(log_buffer=sys.stderr):
address = ('127.0.0.1', 10000)
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
print("making a server on {0}:{1}".format(*address), file=log_buffer)
sock.bind(address)
sock.listen(1)
try:
while True:
print('waiting for a connection', file=log_buffer)
conn, addr = sock.accept() # blocking
try:
print('connection - {0}:{1}'.format(*addr), file=log_buffer)
request = ''
while True:
data = conn.recv(1024)
request += data.decode('utf8')
if '\r\n\r\n' in request:
break
print("Request received:\n{}\n\n".format(request))
try:
path = parse_request(request)
content, mime_type = response_path(path)
response = response_ok(
body=content,
mimetype=mime_type
)
except NotImplementedError:
response = response_method_not_allowed()
except NameError:
response = response_not_found()
print(response)
conn.sendall(response)
except:
traceback.print_exc()
finally:
conn.close()
except KeyboardInterrupt:
sock.close()
return
except:
traceback.print_exc()
if __name__ == '__main__':
server()
sys.exit(0)