public static String stringFromClasspath(Class<?> thisClass, String path) throws IOException {
    URL url = thisClass.getClassLoader().getResource(path);
    assertThat(url).isNotNull();

    try (InputStream fromClasspath = url.openStream()) {
      return Okio.buffer(Okio.source(fromClasspath)).readUtf8();
    }
  }
Simulate a proxy which forwards / to zipkin as opposed to resolving / -> /zipkin first
zipkin-server/src/test/java/zipkin2/server/internal/ITZipkinServer.java