Method acceptKey

src/modules/WebSockets/WebSockets.cpp:543–562

* generate the key for Sec-WebSocket-Accept * @param clientKey String * @return String Accept Key */

 * @return String Accept Key
 */
String WebSockets::acceptKey(String & clientKey) {
    uint8_t sha1HashBin[20] = { 0 };
#ifdef ESP8266
    sha1(clientKey + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11", &sha1HashBin[0]);
#elif defined(ESP32)
    String data = clientKey + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
    esp_sha(SHA1, (unsigned char *)data.c_str(), data.length(), &sha1HashBin[0]);
#else
    clientKey += "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
    SHA1_CTX ctx;
    SHA1Init(&ctx);
    SHA1Update(&ctx, (const unsigned char *)clientKey.c_str(), clientKey.length());
    SHA1Final(&sha1HashBin[0], &ctx);
#endif

    String key = base64_encode(sha1HashBin, 20);
    key.trim();

    return key;
}

/**
 * base64_encode