How to use

setHeader

method

in

org.asynchttpclient.RequestBuilderBase

/**
 * @param name  header name
 * @param value header value to set
 * @return {@code this}
 * @see #setHeader(CharSequence, Object)
 */
public T setHeader(CharSequence name, String value) {
 return setHeader(name, (Object) value);
}

 @Override
 public void calculateAndAddSignature(Request request, RequestBuilderBase<?> requestBuilder) {
  try {
   String authorization = INSTANCES.get().computeAuthorizationHeader(
    consumerAuth,
    userAuth,
    request.getUri(),
    request.getMethod(),
    request.getFormParams(),
    request.getQueryParams());
   requestBuilder.setHeader(HttpHeaderNames.AUTHORIZATION, authorization);
  } catch (InvalidKeyException e) {
   throw new IllegalArgumentException("Failed to compute a valid key from consumer and user secrets", e);
  }
 }
}

 @Override
 public void calculateAndAddSignature(Request request, RequestBuilderBase<?> requestBuilder) {
  try {
   String authorization = new OAuthSignatureCalculatorInstance().computeAuthorizationHeader(
    consumerKey,
    requestToken,
    request.getUri(),
    request.getMethod(),
    request.getFormParams(),
    request.getQueryParams(),
    timestamp,
    nonce);
   requestBuilder.setHeader(HttpHeaderNames.AUTHORIZATION, authorization);
  } catch (InvalidKeyException | NoSuchAlgorithmException e) {
   throw new IllegalArgumentException(e);
  }
 }
}

@Override
public void calculateAndAddSignature(Request request, RequestBuilderBase<?> requestBuilder) {
  String nonce = generateNonce();
  long timestamp = generateTimestamp();
  String signature = calculateSignature(request.getMethod(), request.getUri(), timestamp, nonce, request.getFormParams(), request.getQueryParams());
  String headerValue = constructAuthHeader(signature, nonce, timestamp);
  requestBuilder.setHeader(HEADER_AUTHORIZATION, headerValue);
}