lesson 35

.gitignore

+__pycache__/*
\ No newline at end of file

http_server.py

+from request import Request
+
+import socketserver
+
+
+class Handler(socketserver.StreamRequestHandler):
+    # self.request - client socket
+    
+    def handle(self):
+        request = Request(self.rfile)
+
+        print(request)
+
+        response_body = '<h1>Hello World!</h1>'
+        response_body_len = len(response_body.encode())
+
+        response = (
+            'HTTP/1.1 200 OK',
+            'Content-Type: text/html',
+            f'Content-Length: {response_body_len}',
+            'Connection: close',
+            '',
+            response_body,
+        )
+        self.wfile.write('\r\n'.join(response).encode())
+        
+
+# CR - \r
+# LF - \n
+# b'GET / HTTP/1.1\r\nHost: localhost:1026\r\nConnection: keep-alive\r\nsec-ch-ua: "Google Chrome";v="119", "Chromium";v="119", "Not?A_Brand";v="24"\r\nsec-ch-ua-mobile: ?0\r\nsec-ch-ua-platform: "macOS"\r\nUpgrade-Insecure-Requests: 1\r\nUser-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36\r\nAccept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7\r\nSec-Fetch-Site: none\r\nSec-Fetch-Mode: navigate\r\nSec-Fetch-User: ?1\r\nSec-Fetch-Dest: document\r\nAccept-Encoding: gzip, deflate, br\r\nAccept-Language: ru-RU,ru;q=0.9,en-US;q=0.8,en;q=0.7\r\n
+
+
+ADDRESS = ('localhost', 1026)
+socketserver.ThreadingTCPServer.allow_reuse_address = True
+
+with socketserver.ThreadingTCPServer(ADDRESS, Handler) as server:
+    server.serve_forever()

request.py

+class Request:
+    def __init__(self, rfile):
+        self.file = rfile
+
+        self.method = None
+        self.uri = None
+        self.protocol = None
+        self.headers = {}
+        self.body = None
+
+        self.__parse_request_line()
+        self.__parse_headers()
+        self.__parse_body()
+
+    def __parse_request_line(self):
+        request_line = self.__readline()
+        # GET / HTTP/1.1    ['GET', '/', 'HTTP/1.1']
+        
+        self.method, self.uri, self.protocol = request_line.split()
+
+    def __readline(self):
+        return self.file.readline().decode().strip()
+
+    def __parse_headers(self):
+        while True:
+            header = self.__readline()
+            
+            if header == '':
+                break
+
+            name, value = header.split(': ')
+            self.headers[name] = value
+
+    def __parse_body(self):
+        if 'Content-Length' in self.headers:
+            content_length = int(self.headers['Content-Length'])
+            self.body = self.file.read(content_length)
+
+    def __str__(self):
+        return (
+            f'{"-" * 30}\n'
+            f'{self.method} {self.uri}'
+        )