Custom headers and 301

[jocelynduc]

Hello,

I am trying to use LittleProxy as a reverse proxy by modifying httpObjects in a HttpFiltersSourceAdapter.

My backend server does need some custom headers (let's say customheader1 and customheader2) to handle/authorize properly my requests (own business rule). If I do not send those headers, backend returns a 403.

So, I add my custom headers like that:

@Override
public HttpResponse proxyToServerRequest(HttpObject httpObject) {
    if (httpObject instanceof HttpRequest) {
        HttpRequest httpRequest = (HttpRequest) httpObject;
        HttpHeaders headers = httpRequest.headers();

        headers.add("customheader1", "customcontent1" )
        headers.add("customheader2", "customcontent2" )

        LOGGER.info("proxyToServerRequest " + httpObject);
    }
    return super.proxyToServerRequest(httpObject);
}

The logger shows me the expected HTTP request and the backend server receives the headers in a correct way. Here is what the backend access.log tells me:

Method	URI	Code	Referer	Headers
GET	/app	302	http://localhost:8442	customheader1 customheader2
GET	/app/	301	http://localhost:8442/app/index.xhtml	- -
GET	/app/index.xhtml	403	http://backend:8084/app/	- -

Observations:

• First request is received with my headers
• Second and third requests contains no header.
• The Postman client trigger the request once and, behind, the backend server receive those three request.
• As said and as the backend server receive a request without headers, Postman get a 403 as final response

Question:

• How can I insure that the second an third request are sent with the custom headers?

I am not an expert but I think that after receiving a 302, LittleProxy fires automatically the second request, isn't it?