How to use 'beginSslWithCA' with 'SocketIO'

[Shravan1106]

SSL connections are supported with beginSslWithCA() as shown in the WebSocketClientSSLWithCA example code. How to use it for websocketSocket-ioClient?

[Links2004]

basically the same the socketio variant has beginSslWithCA too. see: https://github.com/Links2004/arduinoWebSockets/blob/master/src/SocketIOclient.h#L56-L59

[Shravan1106]

But when I tried using it. I am getting the following error.

withssl:645:67: error: within this context
     socketIO.beginSslWithCA(mainserver,443 , "/", ENDPOINT_CA_CERT);
                                                                   ^
withssl:645:67: error: 'WebSocketsClient' is not an accessible base of 'SocketIOclient'

[Links2004]

how old is your arduino core / the WebSocket lib? are you still using AXTLS? the CA function are only possible with bareSSL and a a lib version >= 2.3.0

[Shravan1106]

Yes. The lib version we are using is 2.3.0

[Links2004]

what version of the esp8266 arduino core are you using?

the latest version parses all build tests:

[cmcampione]

I have a similar error: 'WebSocketsClient' is not an accessible base of 'SocketIOclient'. This happens when I call beginSocketSSLWithCA(const char, uint16_t, const char, const char, const char). I think because in protected Inheritance − When deriving from a protected base class, public and protected members of the base class become protected members of the derived class. Thanks

[craftycram]

I'm currently experiencing the same issues. The one mentioned by @Shravan1106 and the one mentioned by @cmcampione with a ESP32 and ESP8266 My Core as well as all installed libraries are up to date. Are there any updates on this?

[craftycram]

Not sure if this thread is still active. Therefore pinging you just in case you don't get any new notifications @Links2004

[zekageri]

I have got a similar problem. I have a NodeJS server which uses secure socketIO. Without ssl, the socket works fine. As soon as i want to begin the connection with ssl i got a bunch of errors. Latest BearSSL lib, latest websockets lib, latest Arduino and PIO.

#include <Arduino.h>

#include <ArduinoBearSSL.h>
#define SSL_BARESSL

#include <utilities/globals.h>
#include <ArduinoJson.h>
#include <WebSocketsClient.h>
#include <SocketIOclient.h>
#include <utilities/fileSystem.h>

void serverCommSys::initWithSSL() {
    char ca[10000];
    hsh_fileSystem.readFile(SERVER_CA_PATH,ca);
    Serial.printf("Connecting to HsH server on URL %s...\n",hsh_fileSystem.config.serverBaseURL);

    socketIO.beginSslWithCA(hsh_fileSystem.config.serverBaseIP, 443, "/socket.io/?EIO=4",ca,"HsH");
    socketIO.onEvent(socketIOEvent);

    firstConnectionHappened = true;
}

Compile errors i get:

In file included from C:/Users/Pc/.platformio/packages/framework-arduinoespressif32/tools/sdk/esp32/include/hal/include/hal/sha_types.h:21,
                 from C:/Users/Pc/.platformio/packages/framework-arduinoespressif32/tools/sdk/esp32/include/mbedtls/port/include/sha512_alt.h:28,
                 from C:/Users/Pc/.platformio/packages/framework-arduinoespressif32/tools/sdk/esp32/include/mbedtls/mbedtls/include/mbedtls/sha512.h:70,      
                 from C:/Users/Pc/.platformio/packages/framework-arduinoespressif32/tools/sdk/esp32/include/mbedtls/mbedtls/include/mbedtls/entropy.h:34,     
                 from C:/Users/Pc/.platformio/packages/framework-arduinoespressif32/libraries/WiFiClientSecure/src/ssl_client.h:11,
                 from C:/Users/Pc/.platformio/packages/framework-arduinoespressif32/libraries/WiFiClientSecure/src/WiFiClientSecure.h:26,
                 from lib/arduinoWebSockets/src/WebSockets.h:190,
                 from lib/arduinoWebSockets/src/WebSocketsClient.h:28,
                 from src/utilities/HsHServerComm.h:12,
                 from src/utilities/HsHServerComm.cpp:1:
C:/Users/Pc/.platformio/packages/framework-arduinoespressif32/tools/sdk/esp32/include/esp_rom/include/esp32/rom/sha.h:39:12: error: 'SHA1' redeclared as different kind of symbol
     SHA1 = 0,
            ^
In file included from lib/ArduinoBearSSL/src/ArduinoBearSSL.h:35,
                 from src/utilities/HsHServerComm.h:9,
                 from src/utilities/HsHServerComm.cpp:1:
lib/ArduinoBearSSL/src/SHA1.h:50:18: note: previous declaration 'SHA1Class SHA1'
 extern SHA1Class SHA1;
                  ^~~~
In file included from src/utilities/HsHServerComm.h:12,
                 from src/utilities/HsHServerComm.cpp:1:
lib/arduinoWebSockets/src/WebSocketsClient.h:67:107: error: 'BearSSL' has not been declared
     void beginSocketIOSSLWithCA(const char * host, uint16_t port, const char * url = "/socket.io/?EIO=3", BearSSL::X509List * CA_cert = NULL, const char * protocol = "arduino");

                            ^~~~~~~
lib/arduinoWebSockets/src/WebSocketsClient.h:67:125: error: expected ',' or '...' before '*' token
     void beginSocketIOSSLWithCA(const char * host, uint16_t port, const char * url = "/socket.io/?EIO=3", BearSSL::X509List * CA_cert = NULL, const char * protocol = "arduino");

                                              ^
lib/arduinoWebSockets/src/WebSocketsClient.h:67:10: error: default argument missing for parameter 4 of 'void WebSocketsClient::beginSocketIOSSLWithCA(const char*, uint16_t, const char*, int)'
     void beginSocketIOSSLWithCA(const char * host, uint16_t port, const char * url = "/socket.io/?EIO=3", BearSSL::X509List * CA_cert = NULL, const char * protocol = "arduino");
          ^~~~~~~~~~~~~~~~~~~~~~
src/utilities/HsHServerComm.cpp: In member function 'void serverCommSys::initWithSSL()':
src/utilities/HsHServerComm.cpp:25:98: error: 'void WebSocketsClient::beginSslWithCA(const char*, uint16_t, const char*, const char*, const char*)' is inaccessible within this context
     socketIO.beginSslWithCA(hsh_fileSystem.config.serverBaseIP, 443, "/socket.io/?EIO=4",ca,"HsH");

                   ^
In file included from src/utilities/HsHServerComm.h:12,
                 from src/utilities/HsHServerComm.cpp:1:
lib/arduinoWebSockets/src/WebSocketsClient.h:55:10: note: declared here        
     void beginSslWithCA(const char * host, uint16_t port, const char * url = "/", const char * CA_cert = NULL, const char * protocol = "arduino");
          ^~~~~~~~~~~~~~
src/utilities/HsHServerComm.cpp:25:98: error: 'WebSocketsClient' is not an accessible base of 'SocketIOclient'
     socketIO.beginSslWithCA(hsh_fileSystem.config.serverBaseIP, 443, "/socket.io/?EIO=4",ca,"HsH");

                   ^
*** [.pio\build\esp-wrover-kit\src\utilities\HsHServerComm.cpp.o] Error 1
In file included from C:/Users/Pc/.platformio/packages/framework-arduinoespressif32/tools/sdk/esp32/include/hal/include/hal/sha_types.h:21,
                 from C:/Users/Pc/.platformio/packages/framework-arduinoespressif32/tools/sdk/esp32/include/mbedtls/port/include/sha512_alt.h:28,
                 from C:/Users/Pc/.platformio/packages/framework-arduinoespressif32/tools/sdk/esp32/include/mbedtls/mbedtls/include/mbedtls/sha512.h:70,      
                 from C:/Users/Pc/.platformio/packages/framework-arduinoespressif32/tools/sdk/esp32/include/mbedtls/mbedtls/include/mbedtls/entropy.h:34,     
                 from C:/Users/Pc/.platformio/packages/framework-arduinoespressif32/libraries/WiFiClientSecure/src/ssl_client.h:11,
                 from C:/Users/Pc/.platformio/packages/framework-arduinoespressif32/libraries/WiFiClientSecure/src/WiFiClientSecure.h:26,
                 from lib/arduinoWebSockets/src/WebSockets.h:190,
                 from lib/arduinoWebSockets/src/WebSocketsClient.h:28,
                 from src/utilities/HsHServerComm.h:12,
                 from src/main.cpp:36:
C:/Users/Pc/.platformio/packages/framework-arduinoespressif32/tools/sdk/esp32/include/esp_rom/include/esp32/rom/sha.h:39:12: error: 'SHA1' redeclared as different kind of symbol
     SHA1 = 0,
            ^
In file included from lib/ArduinoBearSSL/src/ArduinoBearSSL.h:35,
                 from src/utilities/HsHServerComm.h:9,
                 from src/main.cpp:36:
lib/ArduinoBearSSL/src/SHA1.h:50:18: note: previous declaration 'SHA1Class SHA1'
 extern SHA1Class SHA1;
                  ^~~~
In file included from src/utilities/HsHServerComm.h:12,
                 from src/main.cpp:36:
lib/arduinoWebSockets/src/WebSocketsClient.h:67:107: error: 'BearSSL' has not been declared
     void beginSocketIOSSLWithCA(const char * host, uint16_t port, const char * url = "/socket.io/?EIO=3", BearSSL::X509List * CA_cert = NULL, const char * protocol = "arduino");

                            ^~~~~~~
lib/arduinoWebSockets/src/WebSocketsClient.h:67:125: error: expected ',' or '...' before '*' token
     void beginSocketIOSSLWithCA(const char * host, uint16_t port, const char * url = "/socket.io/?EIO=3", BearSSL::X509List * CA_cert = NULL, const char * protocol = "arduino");

                                              ^
lib/arduinoWebSockets/src/WebSocketsClient.h:67:10: error: default argument missing for parameter 4 of 'void WebSocketsClient::beginSocketIOSSLWithCA(const char*, uint16_t, const char*, int)'
     void beginSocketIOSSLWithCA(const char * host, uint16_t port, const char * url = "/socket.io/?EIO=3", BearSSL::X509List * CA_cert = NULL, const char * protocol = "arduino");
          ^~~~~~~~~~~~~~~~~~~~~~
*** [.pio\build\esp-wrover-kit\src\main.cpp.o] Error 1