WiFiSSLClient: add setEccSlot method to configure client private key and certificate

Author: pennam

Diff for: libraries/WiFiS3/src/WiFiSSLClient.cpp

@@ -67,6 +67,17 @@ void WiFiSSLClient::setCACert(const char* root_ca, size_t size) {
    }
 }
 
+/* -------------------------------------------------------------------------- */
+void WiFiSSLClient::setEccSlot(int ecc508KeySlot, const byte cert[], int certLength) {
+/* -------------------------------------------------------------------------- */
+   getSocket();
+   string res = "";
+   if(certLength > 0) {
+      modem.write_nowait(string(PROMPT(_SETECCSLOT)),res, "%s%d,%d,%d\r\n" , CMD_WRITE(_SETECCSLOT), _sock, ecc508KeySlot, certLength);
+      modem.passthrough((uint8_t *)cert, certLength);
+   }
+}
+
 /* -------------------------------------------------------------------------- */
 size_t WiFiSSLClient::write(uint8_t b){
 /* -------------------------------------------------------------------------- */   

Diff for: libraries/WiFiS3/src/WiFiSSLClient.h

@@ -34,6 +34,7 @@ class WiFiSSLClient : public WiFiClient {
    virtual int connect(IPAddress ip, uint16_t port);
    virtual int connect(const char* host, uint16_t port);
    void setCACert(const char* root_ca = NULL, size_t size = 0); 
+   void setEccSlot(int ecc508KeySlot, const byte cert[], int certLength);
    virtual size_t write(uint8_t);
    virtual size_t write(const uint8_t *buf, size_t size);
    virtual int available();