JerseyTest Client with MessageBodyWriter don't pass headers to my MessageBodyReader server-side

Question

My headers are not correctly passed from client to server when using JerseyTest.

Both server and client have MessageBodyWriter and MessageBodyReader configured respectively with JerseyTest::configure and JerseyTest::configureClient.

My MessageBodyWriter add some custom headers to query :

@Override
public void writeTo(MyPojo myPojo, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException {
    httpHeaders.put("X-Custom-Header", singletonList(myPojo.header()));
}

but when MessageBodyReader is hit by server, it contains only standard headers.

Any clues on what I'm missing ?

Answer 1

Ok seems a bug with InMemoryConnector :

public ClientResponse apply(final ClientRequest clientRequest) {
    PropertiesDelegate propertiesDelegate = new MapPropertiesDelegate();

    final ContainerRequest containerRequest = new ContainerRequest(baseUri,
            clientRequest.getUri(), clientRequest.getMethod(),
            null, propertiesDelegate);

    containerRequest.getHeaders().putAll(clientRequest.getStringHeaders());

    final ByteArrayOutputStream clientOutput = new ByteArrayOutputStream();
    if (clientRequest.getEntity() != null) {
        clientRequest.setStreamProvider(new OutboundMessageContext.StreamProvider() {
            @Override
            public OutputStream getOutputStream(int contentLength) throws IOException {
                final MultivaluedMap<String, Object> clientHeaders = clientRequest.getHeaders();
                if (contentLength != -1 && !clientHeaders.containsKey(HttpHeaders.CONTENT_LENGTH)) {
                    containerRequest.getHeaders().putSingle(HttpHeaders.CONTENT_LENGTH, String.valueOf(contentLength));
                }
                return clientOutput;
            }
        });

All standard headers are set with :

containerRequest.getHeaders().putAll(clientRequest.getStringHeaders());

But if you provide custom headers, they are read but never added to containerRequest :

final MultivaluedMap<String, Object> clientHeaders = clientRequest.getHeaders();

also https://java.net/jira/browse/JERSEY-2341 suggest it won't be fixed soon.