Reply to @JeffMiller's comment of 1st answer; If anyone is still running into that unexpected "filtered" situation

DONT

HttpClient httpClient = HttpClient.create();
httpClient.config1();
httpClient.config2();
httpClient.**wiretap**(..);

DO this instead

HttpClient httpClient = HttpClient.create()
    .config1();
    .**wiretap**("AnyLoggerNameWillBeOK"); // just remember to adjust the real log level

or you can also DO this

HttpClient httpClient = HttpClient.create(pooled);
httpClient = httpClient.config1(..);
httpClient = httpClient.wiretap(..);

The real reason behind this is the method: reactor.netty.transport.Transport#duplicate