golden hour

/opt/alt/python37/lib64/python3.7/site-packages/aiohttp

File/Folder	Size	Actions
.hash	-
__init__.py	6.71 KB
__pycache__	-
_cparser.pxd	4.88 KB
_find_header.c	183.17 KB
_find_header.h	170 B
_find_header.pxd	68 B
_headers.pxi	1.96 KB
_helpers.c	207.99 KB
_helpers.cpython-37m-x86_64-linux-gnu.so	207.44 KB
_helpers.pyi	202 B
_helpers.pyx	1.02 KB
_http_parser.c	955.26 KB
_http_parser.cpython-37m-x86_64-linux-gnu.so	1.56 MB
_http_parser.pyx	25.95 KB
_http_writer.c	216.08 KB
_http_writer.cpython-37m-x86_64-linux-gnu.so	196.02 KB
_http_writer.pyx	4.47 KB
_websocket.c	135.18 KB
_websocket.cpython-37m-x86_64-linux-gnu.so	95.97 KB
_websocket.pyx	1.52 KB
abc.py	5.38 KB
base_protocol.py	2.64 KB
client.py	43.87 KB
client_exceptions.py	9.06 KB
client_proto.py	8 KB
client_reqrep.py	36.02 KB
client_ws.py	10.29 KB
connector.py	49.66 KB
cookiejar.py	13.25 KB
formdata.py	5.98 KB
hdrs.py	4.61 KB
helpers.py	25.63 KB
http.py	1.78 KB
http_exceptions.py	2.53 KB
http_parser.py	31.83 KB
http_websocket.py	24.76 KB
http_writer.py	5.84 KB
locks.py	1.13 KB
log.py	325 B
multipart.py	31.68 KB
payload.py	13.38 KB
payload_streamer.py	2.06 KB
py.typed	7 B
pytest_plugin.py	11.5 KB
resolver.py	4.97 KB
streams.py	20.35 KB
tcp_helpers.py	962 B
test_utils.py	20.72 KB
tracing.py	14.95 KB
typedefs.py	1.72 KB
web.py	17.51 KB
web_app.py	16.86 KB
web_exceptions.py	9.87 KB
web_fileresponse.py	10.53 KB
web_log.py	7.39 KB
web_middlewares.py	4.04 KB
web_protocol.py	22.02 KB
web_request.py	27.23 KB
web_response.py	26.92 KB
web_routedef.py	5.9 KB
web_runner.py	10.93 KB
web_server.py	2.01 KB
web_urldispatcher.py	38.62 KB
web_ws.py	16.85 KB
worker.py	8.57 KB

Edit: _websocket.pyx

from cpython cimport PyBytes_AsString

#from cpython cimport PyByteArray_AsString # cython still not exports that
cdef extern from "Python.h":
    char* PyByteArray_AsString(bytearray ba) except NULL

from libc.stdint cimport uint32_t, uint64_t, uintmax_t

def _websocket_mask_cython(object mask, object data):
    """Note, this function mutates its `data` argument
    """
    cdef:
        Py_ssize_t data_len, i
        # bit operations on signed integers are implementation-specific
        unsigned char * in_buf
        const unsigned char * mask_buf
        uint32_t uint32_msk
        uint64_t uint64_msk

assert len(mask) == 4

if not isinstance(mask, bytes):
        mask = bytes(mask)

if isinstance(data, bytearray):
        data = <bytearray>data
    else:
        data = bytearray(data)

data_len = len(data)
    in_buf = <unsigned char*>PyByteArray_AsString(data)
    mask_buf = <const unsigned char*>PyBytes_AsString(mask)
    uint32_msk = (<uint32_t*>mask_buf)[0]

# TODO: align in_data ptr to achieve even faster speeds
    # does it need in python ?! malloc() always aligns to sizeof(long) bytes

if sizeof(size_t) >= 8:
        uint64_msk = uint32_msk
        uint64_msk = (uint64_msk << 32) | uint32_msk

while data_len >= 8:
            (<uint64_t*>in_buf)[0] ^= uint64_msk
            in_buf += 8
            data_len -= 8

while data_len >= 4:
        (<uint32_t*>in_buf)[0] ^= uint32_msk
        in_buf += 4
        data_len -= 4

for i in range(0, data_len):
        in_buf[i] ^= mask_buf[i]