in src/main/java/com/microsoft/azure/proton/transport/ws/impl/WebSocketUpgrade.java [63:71]
private String createWebSocketKey() {
byte[] key = new byte[16];
for (int i = 0; i < 16; i++) {
key[i] = (byte) (int) (Utils.getSecureRandom().nextDouble() * 256);
}
return Base64.encodeBase64StringLocal(key).trim();
}