优化sip消息构建，去除ServerTransaction的使用

648540858

2022-10-18 74714711aa87dcd1259f5aebe55d362be732ffa2

 src/main/java/com/genersoft/iot/vmp/gb28181/auth/DigestServerAuthenticationHelper.java

@@ -218,7 +218,7 @@
        logger.debug("qop: " + qop);
        String KD = HA1 + ":" + nonce;

        if (qop != null && qop.equals("auth") ) {
        if (qop != null && qop.equalsIgnoreCase("auth") ) {
            if (nc != -1) {
                KD += ":" + ncStr;
            }