How to use the urllib3.response.HTTPResponse function in urllib3

def test_getheaders(self):
        headers = {"host": "example.com"}
        r = HTTPResponse(headers=headers)
        assert r.getheaders() == headers

# Test no defined length
        fp = BytesIO(b"12345")
        resp = HTTPResponse(fp, preload_content=False)
        resp.read()
        assert resp.length_remaining is None

        # Test our update from content-length
        fp = BytesIO(b"12345")
        resp = HTTPResponse(fp, headers=headers, preload_content=False)
        resp.read()
        assert resp.length_remaining == 0

        # Test partial read
        fp = BytesIO(b"12345")
        resp = HTTPResponse(fp, headers=headers, preload_content=False)
        data = resp.stream(2)
        next(data)
        assert resp.length_remaining == 3

def test_retries(self):
        fp = BytesIO(b"")
        resp = HTTPResponse(fp)
        assert resp.retries is None
        retry = Retry()
        resp = HTTPResponse(fp, retries=retry)
        assert resp.retries == retry

def test_chunked_response_with_extensions(self):
        stream = [b"foo", b"bar"]
        fp = MockChunkedEncodingWithExtensions(stream)
        r = httplib.HTTPResponse(MockSock)
        r.fp = fp
        r.chunked = True
        r.chunk_left = None
        resp = HTTPResponse(
            r, preload_content=False, headers={"transfer-encoding": "chunked"}
        )
        assert stream == list(resp.stream())

def test_retries(self):
        fp = BytesIO(b"")
        resp = HTTPResponse(fp)
        assert resp.retries is None
        retry = Retry()
        resp = HTTPResponse(fp, retries=retry)
        assert resp.retries == retry

def test_length_w_bad_header(self):
        garbage = {"content-length": "foo"}
        fp = BytesIO(b"12345")

        resp = HTTPResponse(fp, headers=garbage, preload_content=False)
        assert resp.length_remaining is None

        garbage["content-length"] = "-10"
        resp = HTTPResponse(fp, headers=garbage, preload_content=False)
        assert resp.length_remaining is None

def test_chunked_decoding_deflate(self):
        data = zlib.compress(b"foo")

        fp = BytesIO(data)
        r = HTTPResponse(
            fp, headers={"content-encoding": "deflate"}, preload_content=False
        )

        assert r.read(3) == b""
        # Buffer in case we need to switch to the raw stream
        assert r._decoder._data is not None
        assert r.read(1) == b"f"
        # Now that we've decoded data, we just stream through the decoder
        assert r._decoder._data is None
        assert r.read(2) == b"oo"
        assert r.read() == b""
        assert r.read() == b""

resp.close()
        assert resp.closed

        # Try closing with an `httplib.HTTPResponse`, because it has an
        # `isclosed` method.
        try:
            hlr = httplib.HTTPResponse(sock)
            resp2 = HTTPResponse(hlr, preload_content=False)
            assert not resp2.closed
            resp2.close()
            assert resp2.closed
        finally:
            hlr.close()

        # also try when only data is present.
        resp3 = HTTPResponse("foodata")
        with pytest.raises(IOError):
            resp3.fileno()

        resp3._fp = 2
        # A corner case where _fp is present but doesn't have `closed`,
        # `isclosed`, or `fileno`.  Unlikely, but possible.
        assert resp3.closed
        with pytest.raises(IOError):
            resp3.fileno()

def save_file(self, path, raw):
		#TODO: Using Database for saving files
		with open(path, "wb") as f:
			if isinstance(raw, HTTPResponse):
				shutil.copyfileobj(raw, f)
			else:
				f.write(raw)

low_conn.send(i.encode())
                        low_conn.send(b'\r\n')


                    low_conn.send(b'0\r\n\r\n')

                    # Receive the response from the server
                    try:
                        # For Python 2.7+ versions, use buffering of HTTP
                        # responses
                        r = low_conn.getresponse(buffering=True)
                    except TypeError:
                        # For compatibility with Python 2.6 versions and back
                        r = low_conn.getresponse()

                    resp = HTTPResponse.from_httplib(
                        r,
                        pool=conn,
                        connection=low_conn,
                        preload_content=False,
                        decode_content=False
                    )
                except:
                    # If we hit any problems here, clean up the connection.
                    # Then, reraise so that we can handle the actual exception.
                    low_conn.close()
                    raise

        except (ProtocolError, socket.error) as err:
            raise ConnectionError(err, request=request)

        except MaxRetryError as e: