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extmod/modussl_mbedtls: Consider mbedtls buffer when poll()'ing #6865

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extmod/modussl_mbedtls: Consider mbedtls buffer when poll()'ing #6865

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8 changes: 8 additions & 0 deletions extmod/modussl_mbedtls.c
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Original file line number Diff line number Diff line change
Expand Up @@ -347,6 +347,14 @@ STATIC mp_uint_t socket_ioctl(mp_obj_t o_in, mp_uint_t request, uintptr_t arg, i
mbedtls_ssl_config_free(&self->conf);
mbedtls_ctr_drbg_free(&self->ctr_drbg);
mbedtls_entropy_free(&self->entropy);
} else if (request == MP_STREAM_POLL) {
/* For POLL_RD, first check if ssl layer has bytes available... */
if (arg & MP_STREAM_POLL_RD) {
if (mbedtls_ssl_get_bytes_avail(&self->ssl) > 0) {
return MP_STREAM_POLL_RD;
}
}
/* ...otherwise fall through to pass request to underlying socket */
}
// Pass all requests down to the underlying socket
return mp_get_stream(self->sock)->ioctl(self->sock, request, arg, errcode);
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