Source:
private HttpRequest configRequest(final HttpRequest request, final SwaggerMethodParser methodParser, final Object[] args) throws IOException { final Object bodyContentObject = methodParser.setBody(args); if (bodyContentObject == null) { request.getHeaders().put("Content-Length", "0"); } else { String contentType = methodParser.getBodyContentType(); if (contentType == null || contentType.isEmpty()) { if (bodyContentObject instanceof byte[] || bodyContentObject instanceof String) { contentType = ContentType.APPLICATION_OCTET_STREAM; } else { contentType = ContentType.APPLICATION_JSON; } } request.getHeaders().put("Content-Type", contentType); boolean isJson = false; final String[] contentTypeParts = contentType.split(";"); for (final String contentTypePart : contentTypeParts) { if (contentTypePart.trim().equalsIgnoreCase(ContentType.APPLICATION_JSON)) { isJson = true; break; } } if (isJson) { request.setBody(serializer.serializeToBytes(bodyContentObject, SerializerEncoding.JSON)); } else if (FluxUtil.isFluxByteBuffer(methodParser.getBodyJavaType())) { request.setBody((Flux<ByteBuffer>) bodyContentObject); } else if (bodyContentObject instanceof byte[]) { request.setBody((byte[]) bodyContentObject); } else if (bodyContentObject instanceof String) { final String bodyContentString = (String) bodyContentObject; if (!bodyContentString.isEmpty()) { request.setBody(bodyContentString); } } else if (bodyContentObject instanceof ByteBuffer) { request.setBody(Flux.just((ByteBuffer) bodyContentObject)); } else { request.setBody( serializer .serializeToBytes(bodyContentObject, SerializerEncoding.fromHeaders(request.getHeaders()))); } } return request; }

Target:
private HttpRequest configRequest(final HttpRequest request, final SwaggerMethodParser methodParser, final Object[] args) throws IOException { final Object bodyContentObject = methodParser.setBody(args); if (bodyContentObject == null) { request.getHeaders().put("Content-Length", "0"); } else { String contentType = methodParser.getBodyContentType(); if (contentType == null || contentType.isEmpty()) { if (bodyContentObject instanceof byte[] || bodyContentObject instanceof String) { contentType = ContentType.APPLICATION_OCTET_STREAM; } else { contentType = ContentType.APPLICATION_JSON; } } request.getHeaders().put("Content-Type", contentType); boolean isJson = false; final String[] contentTypeParts = contentType.split(";"); for (final String contentTypePart : contentTypeParts) { if (contentTypePart.trim().equalsIgnoreCase(ContentType.APPLICATION_JSON)) { isJson = true; break; } } if (isJson) { ByteArrayOutputStream stream = new AccessibleByteArrayOutputStream(); serializer.serialize(bodyContentObject, SerializerEncoding.JSON, stream); request.setHeader("Content-Length", String.valueOf(stream.size())); request.setBody(Flux.just(ByteBuffer.wrap(stream.toByteArray(), 0, stream.size()))); } else if (FluxUtil.isFluxByteBuffer(methodParser.getBodyJavaType())) { request.setBody((Flux<ByteBuffer>) bodyContentObject); } else if (bodyContentObject instanceof byte[]) { request.setBody((byte[]) bodyContentObject); } else if (bodyContentObject instanceof String) { final String bodyContentString = (String) bodyContentObject; if (!bodyContentString.isEmpty()) { request.setBody(bodyContentString); } } else if (bodyContentObject instanceof ByteBuffer) { request.setBody(Flux.just((ByteBuffer) bodyContentObject)); } else { ByteArrayOutputStream stream = new AccessibleByteArrayOutputStream(); serializer.serialize(bodyContentObject, SerializerEncoding.fromHeaders(request.getHeaders()), stream); request.setHeader("Content-Length", String.valueOf(stream.size())); request.setBody(Flux.just(ByteBuffer.wrap(stream.toByteArray(), 0, stream.size()))); } } return request; }