golden hour

/opt/cloudlinux/venv/lib/python3.11/site-packages/aiohttp

File/Folder	Size	Actions
.hash	-
__init__.py	7.58 KB
__pycache__	-
_cparser.pxd	4.22 KB
_find_header.pxd	68 B
_headers.pxi	1.96 KB
_helpers.cpython-311-x86_64-linux-gnu.so	563.5 KB
_helpers.pyi	202 B
_helpers.pyx	1.02 KB
_http_parser.cpython-311-x86_64-linux-gnu.so	2.66 MB
_http_parser.pyx	27.4 KB
_http_writer.cpython-311-x86_64-linux-gnu.so	477.98 KB
_http_writer.pyx	4.47 KB
_websocket.cpython-311-x86_64-linux-gnu.so	249.84 KB
_websocket.pyx	1.52 KB
abc.py	5.37 KB
base_protocol.py	2.68 KB
client.py	46.17 KB
client_exceptions.py	9.19 KB
client_proto.py	8.45 KB
client_reqrep.py	38.75 KB
client_ws.py	10.75 KB
compression_utils.py	4.9 KB
connector.py	51.56 KB
cookiejar.py	13.69 KB
formdata.py	5.96 KB
hdrs.py	4.5 KB
helpers.py	29.55 KB
http.py	1.8 KB
http_exceptions.py	2.65 KB
http_parser.py	34.66 KB
http_websocket.py	26.09 KB
http_writer.py	5.79 KB
locks.py	1.11 KB
log.py	325 B
multipart.py	31.71 KB
payload.py	13.22 KB
payload_streamer.py	2.04 KB
py.typed	7 B
pytest_plugin.py	11.33 KB
resolver.py	4.95 KB
streams.py	20.35 KB
tcp_helpers.py	961 B
test_utils.py	19.71 KB
tracing.py	14.78 KB
typedefs.py	1.44 KB
web.py	18.81 KB
web_app.py	17.88 KB
web_exceptions.py	10.12 KB
web_fileresponse.py	11.15 KB
web_log.py	7.62 KB
web_middlewares.py	3.94 KB
web_protocol.py	22.5 KB
web_request.py	28.08 KB
web_response.py	27.08 KB
web_routedef.py	5.99 KB
web_runner.py	11.46 KB
web_server.py	2.53 KB
web_urldispatcher.py	39.12 KB
web_ws.py	18.21 KB
worker.py	7.78 KB

Edit: _http_writer.pyx

from cpython.bytes cimport PyBytes_FromStringAndSize
from cpython.exc cimport PyErr_NoMemory
from cpython.mem cimport PyMem_Free, PyMem_Malloc, PyMem_Realloc
from cpython.object cimport PyObject_Str
from libc.stdint cimport uint8_t, uint64_t
from libc.string cimport memcpy

from multidict import istr

DEF BUF_SIZE = 16 * 1024  # 16KiB
cdef char BUFFER[BUF_SIZE]

cdef object _istr = istr

# ----------------- writer ---------------------------

cdef struct Writer:
    char *buf
    Py_ssize_t size
    Py_ssize_t pos

cdef inline void _init_writer(Writer* writer):
    writer.buf = &BUFFER[0]
    writer.size = BUF_SIZE
    writer.pos = 0

cdef inline void _release_writer(Writer* writer):
    if writer.buf != BUFFER:
        PyMem_Free(writer.buf)

cdef inline int _write_byte(Writer* writer, uint8_t ch):
    cdef char * buf
    cdef Py_ssize_t size

if writer.pos == writer.size:
        # reallocate
        size = writer.size + BUF_SIZE
        if writer.buf == BUFFER:
            buf = <char*>PyMem_Malloc(size)
            if buf == NULL:
                PyErr_NoMemory()
                return -1
            memcpy(buf, writer.buf, writer.size)
        else:
            buf = <char*>PyMem_Realloc(writer.buf, size)
            if buf == NULL:
                PyErr_NoMemory()
                return -1
        writer.buf = buf
        writer.size = size
    writer.buf[writer.pos] = <char>ch
    writer.pos += 1
    return 0

cdef inline int _write_utf8(Writer* writer, Py_UCS4 symbol):
    cdef uint64_t utf = <uint64_t> symbol

if utf < 0x80:
        return _write_byte(writer, <uint8_t>utf)
    elif utf < 0x800:
        if _write_byte(writer, <uint8_t>(0xc0 | (utf >> 6))) < 0:
            return -1
        return _write_byte(writer,  <uint8_t>(0x80 | (utf & 0x3f)))
    elif 0xD800 <= utf <= 0xDFFF:
        # surogate pair, ignored
        return 0
    elif utf < 0x10000:
        if _write_byte(writer, <uint8_t>(0xe0 | (utf >> 12))) < 0:
            return -1
        if _write_byte(writer, <uint8_t>(0x80 | ((utf >> 6) & 0x3f))) < 0:
            return -1
        return _write_byte(writer, <uint8_t>(0x80 | (utf & 0x3f)))
    elif utf > 0x10FFFF:
        # symbol is too large
        return 0
    else:
        if _write_byte(writer,  <uint8_t>(0xf0 | (utf >> 18))) < 0:
            return -1
        if _write_byte(writer,
                       <uint8_t>(0x80 | ((utf >> 12) & 0x3f))) < 0:
           return -1
        if _write_byte(writer,
                       <uint8_t>(0x80 | ((utf >> 6) & 0x3f))) < 0:
            return -1
        return _write_byte(writer, <uint8_t>(0x80 | (utf & 0x3f)))

cdef inline int _write_str(Writer* writer, str s):
    cdef Py_UCS4 ch
    for ch in s:
        if _write_utf8(writer, ch) < 0:
            return -1

# --------------- _serialize_headers ----------------------

cdef str to_str(object s):
    typ = type(s)
    if typ is str:
        return <str>s
    elif typ is _istr:
        return PyObject_Str(s)
    elif not isinstance(s, str):
        raise TypeError("Cannot serialize non-str key {!r}".format(s))
    else:
        return str(s)

cdef void _safe_header(str string) except *:
    if "\r" in string or "\n" in string:
        raise ValueError(
            "Newline or carriage return character detected in HTTP status message or "
            "header. This is a potential security issue."
        )

def _serialize_headers(str status_line, headers):
    cdef Writer writer
    cdef object key
    cdef object val
    cdef bytes ret

_init_writer(&writer)

for key, val in headers.items():
        _safe_header(to_str(key))
        _safe_header(to_str(val))

try:
        if _write_str(&writer, status_line) < 0:
            raise
        if _write_byte(&writer, b'\r') < 0:
            raise
        if _write_byte(&writer, b'\n') < 0:
            raise

for key, val in headers.items():
            if _write_str(&writer, to_str(key)) < 0:
                raise
            if _write_byte(&writer, b':') < 0:
                raise
            if _write_byte(&writer, b' ') < 0:
                raise
            if _write_str(&writer, to_str(val)) < 0:
                raise
            if _write_byte(&writer, b'\r') < 0:
                raise
            if _write_byte(&writer, b'\n') < 0:
                raise

if _write_byte(&writer, b'\r') < 0:
            raise
        if _write_byte(&writer, b'\n') < 0:
            raise

return PyBytes_FromStringAndSize(writer.buf, writer.pos)
    finally:
        _release_writer(&writer)