private String getRemoteAddressForTHttpClient(THttpClient tHttpClient) {
        if (tHttpClient instanceof UrlFieldGetter) {
            URL url = ((UrlFieldGetter) tHttpClient)._$PINPOINT$_getUrl();
            if (url == null) {
                return ThriftConstants.UNKNOWN_ADDRESS;
            }
            return HostAndPort.toHostAndPortString(url.getHost(), url.getPort());
        }
        if (isDebug) {
            logger.debug("Invalid oprot transport object. Need field getter({}).", UrlFieldGetter.class.getName());
        }
        return ThriftConstants.UNKNOWN_ADDRESS;
    }
Starting point for tracing synchronous client calls for Thrift services.
<p>
Note that in order to trace remote agents, trace data must be sent to them. These data are serialized as Thrift fields and attached to the body of the Thrift
message by other interceptors down the chain.
<p>
<b><tt>TServiceClientSendBaseInterceptor</tt></b> -> <tt>TProtocolWriteFieldStopInterceptor</tt>
<p>
Based on Thrift 0.8.0+

@author HyunGil Jeong

@see com.navercorp.pinpoint.plugin.thrift.interceptor.tprotocol.client.TProtocolWriteFieldStopInterceptor TProtocolWriteFieldStopInterceptor
agent-module/plugins/thrift/src/main/java/com/navercorp/pinpoint/plugin/thrift/interceptor/client/TServiceClientSendBaseInterceptor.java