Using these ciphers can constitute a security risk if the server
uses a weak prime for the key exchange.
Footprint impact:
Roughly 3K saved in text+rodata in default https_request example
- Can be used to get connection or client information (SSL context)
- E.g. Client certificate, Socket FD, Connection state, etc.
- Added example callback for getting client certificate information in 'https_server/simple' example
Closes https://github.com/espressif/esp-idf/issues/7479
Also added parameter checks if used from as a public API
and updated the `is_plein_tcp` description that it's possible to connect
directly using plain tcp transport with the new API.
Current code applies keep_alive_enable setting to TCP_KEEPIDLE, fix it.
Fixes: 2d25252746 ("esp-tls: Rework tcp_connect() to use more subroutines")
Signed-off-by: Axel Lin <axel.lin@gmail.com>
wolfSSL error codes are mostly positive numbers, but esp-tls potentially
non-block API (read/write) returns ssize_t, i.e. bytes read/written if
>0, errorcode otherwise. To comply with this API we have to conditionate
the wolfssl return codes to negative numbers, preferably the same codes
as mbedTLS codes.
Refactored the esp_tcp_connect() functionality to break it down to
* dns-resolution + socket creation
* set configured socket options
* set/reset non-block mode
* the actual connection in non-blocking mode
Transport's error_handle is used to capture different types of errors
including esp_err_t from esp-tls and socket/system errors.
This change adds the following error codes for TCP transport:
* connection closed by a FIN flag (clean closure from server)
* DNS resolution problem
* connection timeout
These errors are already defined in esp-tls component and since this
component will be used in the future for both TCP and SSL transport, we
currently report these issues in transport::error_handle::esp_tls_last_error
of standard esp error type (esp_err_t)
Closes https://github.com/espressif/esp-mqtt/issues/182
purpose)
By default esp-tls client will now return error if no server verify option
is provided, earlier it used to skip the verification by
default.
Added config option to skip server verification by default (for testing
purpose)
Updated required docs
* Target components pull in xtensa component directly
* Use CPU HAL where applicable
* Remove unnecessary xtensa headers
* Compilation changes necessary to support non-xtensa gcc types (ie int32_t/uint32_t is no
longer signed/unsigned int).
Changes come from internal branch commit a6723fc
mbedTLS stack does not keep TLS renegotiation enabled even if
relevant config option is turned on, it needs explicit API call
`mbedtls_ssl_conf_renegotiation` to do so.
This issue was observed in case of Azure IoT, where keys needs to
be refreshed periodically to keep TLS connection intact.
* Replaced crypotoauthlib with esp-cryptoauthlib
* Added menuconfig option for esp-tls about using HSM
* Added error codes for HSM in esp-tls,
* Added support to select different type of ATECC608A chips
* Added README, updated docs
* tcp_transport: Added option to enable secure_element for ssl
Closes https://github.com/espressif/esp-idf/issues/4432
