4.6.2.2. アプリケーションの Eclipse Vert.x HTTP クライアントへの移行

HttpClientRequest request = client.get(80, "example.com", "/", response -> {
  int statusCode = response.statusCode();
  response.exceptionHandler(err -> {
    // Handle connection error, for example, connection closed
  });
  response.bodyHandler(body -> {
    // Handle body entirely
  });
});
request.exceptionHandler(err -> {
  // Handle connection error OR response error
});
request.end();

client.request(HttpMethod.GET, 80, "example.com", "/", ar -> {
  if (ar.succeeded()) {
    HttpClientRequest = ar.result();
    request.send(ar2 -> {
      if (ar2.succeeded()) {
        HttpClientResponse = ar2.result();
        int statusCode = response.statusCode();
        response.body(ar3 -> {
          if (ar3.succeeded()) {
            Buffer body = ar3.result();
            // Handle body entirely
          } else {
            // Handle server error, for example, connection closed
          }
        });
      } else {
        // Handle server error, for example, connection closed
      }
    });
  } else {
    // Connection error, for example, invalid server or invalid SSL certificate
  }
});

Future<Buffer> fut = client.request(HttpMethod.GET, 80, "example.com", "/")
  .compose(request -> request.send().compose(response -> {
    int statusCode = response.statusCode();
    if (statusCode == 200) {
      return response.body();
    } else {
      return Future.failedFuture("Unexpectd status code");
    }
  })
});
fut.onComplete(ar -> {
  if (ar.succeeded()) {
    Buffer body = ar.result();
    // Handle body entirely
  } else {
    // Handle error
  }
});