Add HW 3

2026-09-24 21:30:37 +03:00
parent 0a1eb51bf8
commit 6210b46c1f
35 changed files with 4012 additions and 0 deletions
@@ -0,0 +1,124 @@
+import dataclasses
+import typing as t
+
+
+@dataclasses.dataclass
+class HTTPRequest:
+    method: str
+    path: str
+    version: str
+    parameters: t.Dict[str, str]
+    headers: t.Dict[str, str]
+
+    @staticmethod
+    def from_bytes(data: bytes) -> "HTTPRequest":
+        # data contains the request line and headers, including the final CRLF.
+        # Read the body separately in HTTPHandler; it may exceed available RAM.
+        # Query parameters are not required: parameters can be an empty dict.
+        # TODO: Parse the request line and headers.
+        pass
+
+
+@dataclasses.dataclass
+class HTTPResponse:
+    version: str
+    status: str
+    headers: t.Dict[str, str]
+
+    def to_bytes(self) -> bytes:
+        # Return the status line and headers, ending with an empty line.
+        # HTTPHandler sends the body separately.
+        # TODO: Serialize the response headers.
+        pass
+
+# Common HTTP strings and constants
+
+
+CR = b'\r'
+LF = b'\n'
+CRLF = CR + LF
+
+HTTP_VERSION = "1.1"
+
+OPTIONS = 'OPTIONS'
+GET = 'GET'
+HEAD = 'HEAD'
+POST = 'POST'
+PUT = 'PUT'
+DELETE = 'DELETE'
+
+METHODS = [
+    OPTIONS,
+    GET,
+    HEAD,
+    POST,
+    PUT,
+    DELETE,
+]
+
+# Only GET, POST, PUT and DELETE are required in this assignment.
+
+HEADER_HOST = "Host"
+HEADER_CONTENT_LENGTH = "Content-Length"
+HEADER_CONTENT_TYPE = "Content-Type"
+HEADER_CONTENT_ENCODING = "Content-Encoding"
+HEADER_ACCEPT_ENCODING = "Accept-Encoding"
+HEADER_CREATE_DIRECTORY = "Create-Directory"
+HEADER_SERVER = "Server"
+HEADER_REMOVE_DIRECTORY = "Remove-Directory"
+
+GZIP = "gzip"
+
+TEXT_PLAIN = "text/plain"
+APPLICATION_OCTET_STREAM = "application/octet-stream"
+APPLICATION_GZIP = "application/gzip"
+
+OK = "200"
+BAD_REQUEST = "400"
+NOT_FOUND = "404"
+METHOD_NOT_ALLOWED = "405"
+NOT_ACCEPTABLE = "406"
+CONFLICT = "409"
+
+HTTP_REASON_BY_STATUS = {
+    "100": "Continue",
+    "101": "Switching Protocols",
+    "200": "OK",
+    "201": "Created",
+    "202": "Accepted",
+    "203": "Non-Authoritative Information",
+    "204": "No Content",
+    "205": "Reset Content",
+    "206": "Partial Content",
+    "300": "Multiple Choices",
+    "301": "Moved Permanently",
+    "302": "Found",
+    "303": "See Other",
+    "304": "Not Modified",
+    "305": "Use Proxy",
+    "307": "Temporary Redirect",
+    "400": "Bad Request",
+    "401": "Unauthorized",
+    "402": "Payment Required",
+    "403": "Forbidden",
+    "404": "Not Found",
+    "405": "Method Not Allowed",
+    "406": "Not Acceptable",
+    "407": "Proxy Authentication Required",
+    "408": "Request Time-out",
+    "409": "Conflict",
+    "410": "Gone",
+    "411": "Length Required",
+    "412": "Precondition Failed",
+    "413": "Request Entity Too Large",
+    "414": "Request-URI Too Large",
+    "415": "Unsupported Media Type",
+    "416": "Requested range not satisfiable",
+    "417": "Expectation Failed",
+    "500": "Internal Server Error",
+    "501": "Not Implemented",
+    "502": "Bad Gateway",
+    "503": "Service Unavailable",
+    "504": "Gateway Time-out",
+    "505": "HTTP Version not supported",
+}