83 lines
2.0 KiB
Python
83 lines
2.0 KiB
Python
import logging
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import socket
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from io import BufferedReader
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BUFSIZE = 4096
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TIMEOUT = 3
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FORMAT = "UTF-8"
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MAXLINE = 4096
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class HTTPSocket:
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host: str
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conn: socket.socket
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file: BufferedReader
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def __init__(self, conn: socket.socket, host: str):
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self.host = host
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self.conn = conn
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self.conn.settimeout(TIMEOUT)
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self.conn.setblocking(True)
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self.conn.settimeout(60)
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self.file = self.conn.makefile("rb")
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def close(self):
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self.file.close()
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self.conn.close()
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def reset_request(self):
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self.file.close()
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self.file = self.conn.makefile("rb")
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def __do_receive(self):
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if self.conn.fileno() == -1:
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raise Exception("Connection closed")
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result = self.conn.recv(BUFSIZE)
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return result
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def receive(self):
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"""Receive data from the client up to BUFSIZE
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"""
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count = 0
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while True:
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count += 1
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try:
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return self.__do_receive()
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except socket.timeout:
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logging.debug("Socket receive timed out after %s seconds", TIMEOUT)
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if count == 3:
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break
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logging.debug("Retrying %s", count)
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logging.debug("Timed out after waiting %s seconds for response", TIMEOUT * count)
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raise TimeoutError("Request timed out")
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def read(self, size=BUFSIZE, blocking=True) -> bytes:
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if blocking:
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return self.file.read(size)
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return self.file.read1(size)
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def read_line(self):
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return str(self.read_bytes_line(), FORMAT)
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def read_bytes_line(self) -> bytes:
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line = self.file.readline(MAXLINE + 1)
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if len(line) > MAXLINE:
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raise InvalidResponse("Line too long")
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return line
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class HTTPException(Exception):
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""" Base class for HTTP exceptions """
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class InvalidResponse(HTTPException):
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""" Response message cannot be parsed """
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def __init(self, message):
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self.message = message
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