How to use the aliyun-python-sdk-core.alibabacloud.vendored.requests.packages.urllib3.contrib._securetransport.bindings.SecurityConst function in aliyun-python-sdk-core

# the performance of this code.
_connection_refs = weakref.WeakValueDictionary()
_connection_ref_lock = threading.Lock()

# Limit writes to 16kB. This is OpenSSL's limit, but we'll cargo-cult it over
# for no better reason than we need *a* limit, and this one is right there.
SSL_WRITE_BLOCKSIZE = 16384

# This is our equivalent of util.ssl_.DEFAULT_CIPHERS, but expanded out to
# individual cipher suites. We need to do this becuase this is how
# SecureTransport wants them.
CIPHER_SUITES = [
    SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
    SecurityConst.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
    SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
    SecurityConst.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
    SecurityConst.TLS_DHE_DSS_WITH_AES_256_GCM_SHA384,
    SecurityConst.TLS_DHE_RSA_WITH_AES_256_GCM_SHA384,
    SecurityConst.TLS_DHE_DSS_WITH_AES_128_GCM_SHA256,
    SecurityConst.TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,
    SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384,
    SecurityConst.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384,
    SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
    SecurityConst.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
    SecurityConst.TLS_DHE_RSA_WITH_AES_256_CBC_SHA256,
    SecurityConst.TLS_DHE_DSS_WITH_AES_256_CBC_SHA256,
    SecurityConst.TLS_DHE_RSA_WITH_AES_256_CBC_SHA,
    SecurityConst.TLS_DHE_DSS_WITH_AES_256_CBC_SHA,
    SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
    SecurityConst.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
    SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
    SecurityConst.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,

def send(self, data):
        processed_bytes = ctypes.c_size_t(0)

        with self._raise_on_error():
            result = Security.SSLWrite(
                self.context, data, len(data), ctypes.byref(processed_bytes)
            )

        if result == SecurityConst.errSSLWouldBlock and processed_bytes.value == 0:
            # Timed out
            raise socket.timeout("send timed out")
        else:
            _assert_no_error(result)

        # We sent, and probably succeeded. Tell them how much we sent.
        return processed_bytes.value

result = Security.SSLRead(
                self.context, buffer, nbytes, ctypes.byref(processed_bytes)
            )

        # There are some result codes that we want to treat as "not always
        # errors". Specifically, those are errSSLWouldBlock,
        # errSSLClosedGraceful, and errSSLClosedNoNotify.
        if (result == SecurityConst.errSSLWouldBlock):
            # If we didn't process any bytes, then this was just a time out.
            # However, we can get errSSLWouldBlock in situations when we *did*
            # read some data, and in those cases we should just read "short"
            # and return.
            if processed_bytes.value == 0:
                # Timed out, no data read.
                raise socket.timeout("recv timed out")
        elif result in (SecurityConst.errSSLClosedGraceful, SecurityConst.errSSLClosedNoNotify):
            # The remote peer has closed this connection. We should do so as
            # well. Note that we don't actually return here because in
            # principle this could actually be fired along with return data.
            # It's unlikely though.
            self.close()
        else:
            _assert_no_error(result)

        # Ok, we read and probably succeeded. We should return whatever data
        # was actually read.
        return processed_bytes.value

#       so cannot conflict with any of the insertions.
#
# This is good: if we had to lock in the callbacks we'd drastically slow down
# the performance of this code.
_connection_refs = weakref.WeakValueDictionary()
_connection_ref_lock = threading.Lock()

# Limit writes to 16kB. This is OpenSSL's limit, but we'll cargo-cult it over
# for no better reason than we need *a* limit, and this one is right there.
SSL_WRITE_BLOCKSIZE = 16384

# This is our equivalent of util.ssl_.DEFAULT_CIPHERS, but expanded out to
# individual cipher suites. We need to do this becuase this is how
# SecureTransport wants them.
CIPHER_SUITES = [
    SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
    SecurityConst.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
    SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
    SecurityConst.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
    SecurityConst.TLS_DHE_DSS_WITH_AES_256_GCM_SHA384,
    SecurityConst.TLS_DHE_RSA_WITH_AES_256_GCM_SHA384,
    SecurityConst.TLS_DHE_DSS_WITH_AES_128_GCM_SHA256,
    SecurityConst.TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,
    SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384,
    SecurityConst.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384,
    SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
    SecurityConst.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
    SecurityConst.TLS_DHE_RSA_WITH_AES_256_CBC_SHA256,
    SecurityConst.TLS_DHE_DSS_WITH_AES_256_CBC_SHA256,
    SecurityConst.TLS_DHE_RSA_WITH_AES_256_CBC_SHA,
    SecurityConst.TLS_DHE_DSS_WITH_AES_256_CBC_SHA,
    SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,

trust_result = Security.SecTrustResultType()
            result = Security.SecTrustEvaluate(
                trust, ctypes.byref(trust_result)
            )
            _assert_no_error(result)
        finally:
            if trust:
                CoreFoundation.CFRelease(trust)

            if cert_array is None:
                CoreFoundation.CFRelease(cert_array)

        # Ok, now we can look at what the result was.
        successes = (
            SecurityConst.kSecTrustResultUnspecified,
            SecurityConst.kSecTrustResultProceed
        )
        if trust_result.value not in successes:
            raise ssl.SSLError(
                "certificate verify failed, error code: %d" %
                trust_result.value
            )

trust_result = Security.SecTrustResultType()
            result = Security.SecTrustEvaluate(
                trust, ctypes.byref(trust_result)
            )
            _assert_no_error(result)
        finally:
            if trust:
                CoreFoundation.CFRelease(trust)

            if cert_array is None:
                CoreFoundation.CFRelease(cert_array)

        # Ok, now we can look at what the result was.
        successes = (
            SecurityConst.kSecTrustResultUnspecified,
            SecurityConst.kSecTrustResultProceed
        )
        if trust_result.value not in successes:
            raise ssl.SSLError(
                "certificate verify failed, error code: %d" %
                trust_result.value
            )