org.apache.wink.server.internal.contexts.HttpHeadersImpl#getRequestHeaderInternal(String) should check for invalid values.

The HTTP Request headers looks like this:
Host: localhost:13100
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.1.3) Gecko/20090824 Firefox/3.5.3
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: bg,en-us;q=0.7,en;q=0.3
Accept-Encoding: gzip,deflate
Accept-Charset: windows-1251,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Content-Type: text/html

The thrown exception is:
javax.ws.rs.WebApplicationException: java.lang.IllegalArgumentException: Wrong MediaType format for MediaType: {}
	at org.apache.wink.server.internal.contexts.HttpHeadersImpl.getAcceptHeader(HttpHeadersImpl.java:132)
	at org.apache.wink.server.internal.contexts.HttpHeadersImpl.getAcceptableMediaTypes(HttpHeadersImpl.java:93)
	at org.apache.wink.server.internal.registry.ResourceRegistry.filterByProduces(ResourceRegistry.java:473)
	at org.apache.wink.server.internal.registry.ResourceRegistry.filterDispatchMethods(ResourceRegistry.java:397)
	at org.apache.wink.server.internal.registry.ResourceRegistry.findMethod(ResourceRegistry.java:281)
	at org.apache.wink.server.internal.handlers.FindResourceMethodHandler.handleResourceMethod(FindResourceMethodHandler.java:123)
	at org.apache.wink.server.internal.handlers.FindResourceMethodHandler.handleRequest(FindResourceMethodHandler.java:58)
	at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
	at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
	at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:55)
	at org.apache.wink.server.internal.handlers.FindRootResourceHandler.handleRequest(FindRootResourceHandler.java:99)
	at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
	at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
	at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:55)
	at org.apache.wink.server.internal.handlers.HeadMethodHandler.handleRequest(HeadMethodHandler.java:47)
	at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
	at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
	at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:55)
	at org.apache.wink.server.internal.handlers.OptionsMethodHandler.handleRequest(OptionsMethodHandler.java:42)
	at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
	at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
	at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:55)
	at org.apache.wink.server.internal.handlers.SearchResultHandler.handleRequest(SearchResultHandler.java:33)
	at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
	at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
	at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:55)
	at org.apache.wink.server.handlers.AbstractHandlersChain.run(AbstractHandlersChain.java:43)
	at org.apache.wink.server.internal.RequestProcessor.handleRequestWithoutFaultBarrier(RequestProcessor.java:137)
	at org.apache.wink.server.internal.RequestProcessor.handleRequest(RequestProcessor.java:118)
	at org.apache.wink.server.internal.servlet.RestServlet.service(RestServlet.java:103)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:971)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:477)
	at com.ibm.pvc.internal.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:86)
	at com.ibm.pvc.internal.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:102)
	at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3124)
	at com.ibm.pvc.internal.webcontainer.webapp.BundleWebApp.handleRequest(BundleWebApp.java:451)
	at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:235)
	at com.ibm.pvc.internal.webcontainer.VirtualHost.handleRequest(VirtualHost.java:96)
	at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:811)
	at com.ibm.ws.webcontainer.http.HttpConnection.handleRequest(HttpConnection.java:41)
	at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:464)
	at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:355)
	at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1498)
Caused by: 
java.lang.IllegalArgumentException: Wrong MediaType format for MediaType: {}
	at org.apache.wink.common.internal.providers.header.MediaTypeHeaderDelegate.fromString(MediaTypeHeaderDelegate.java:78)
	at org.apache.wink.common.internal.providers.header.MediaTypeHeaderDelegate.fromString(MediaTypeHeaderDelegate.java:34)
	at javax.ws.rs.core.MediaType.valueOf(MediaType.java:119)
	at org.apache.wink.common.internal.providers.header.AcceptHeaderDelegate.fromString(AcceptHeaderDelegate.java:55)
	at org.apache.wink.common.internal.providers.header.AcceptHeaderDelegate.fromString(AcceptHeaderDelegate.java:33)
	at org.apache.wink.common.internal.http.Accept.valueOf(Accept.java:139)
	at org.apache.wink.server.internal.contexts.HttpHeadersImpl.getAcceptHeader(HttpHeadersImpl.java:129)
	... 43 more
Caused by: 
java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 1
	at org.apache.wink.common.internal.providers.header.MediaTypeHeaderDelegate.fromString(MediaTypeHeaderDelegate.java:65)
	... 49 more

private Accept getAcceptHeader() {
	String alternateParameter = msgContext.getUriInfo().getQueryParameters().getFirst(RestConstants.REST_PARAM_MEDIA_TYPE);
	String acceptValue = null;
	if (alternateParameter != null) {
		// try to map alternate parameter shortcut to a real media type
		DeploymentConfiguration deploymentConfiguration = msgContext.getAttribute(DeploymentConfiguration.class);
		Map<String, String> alternateShortcutMap = deploymentConfiguration.getAlternateShortcutMap();
		if (alternateShortcutMap != null) {
			acceptValue = alternateShortcutMap.get(alternateParameter);
		}
		if (acceptValue == null) {
			acceptValue = alternateParameter;
		}
	} else {
		List<String> requestHeader = getRequestHeader(HttpHeaders.ACCEPT);
		if (requestHeader == null || requestHeader.isEmpty()) {
			acceptValue = null;
		} else if (requestHeader.size() > 0) {
			StringBuilder acceptValueTemp = new StringBuilder();
			acceptValueTemp.append(requestHeader.get(0));
			for (int c = 1; c < requestHeader.size(); ++c) {
				acceptValueTemp.append(",");
				acceptValueTemp.append(requestHeader.get(c));
			}
			acceptValue = acceptValueTemp.toString();
		} else {
			acceptValue = requestHeader.get(0);
		}
	}
	try {
		Accept acceptHeader = Accept.valueOf(acceptValue);
		return acceptHeader;
	} catch (IllegalArgumentException e) {
		throw new WebApplicationException(e, 400);
	}
}

private List<String> getRequestHeaderInternal(String name) {
	if (allHeaders != null) {
		return allHeaders.get(name);
	}

	List<String> list = headers.get(name);
	if (list == null) {
		Enumeration<?> headerValues = msgContext.getAttribute(HttpServletRequest.class).getHeaders(name);
		list = new ArrayList<String>();
		while (headerValues.hasMoreElements()) {
			String val = (String) headerValues.nextElement();
			if (val != null) {
				list.add(val);
			}
		}

		headers.put(name, list);
	}

	return list;
}

private MultivaluedMap<String, String> buildRequestHeaders() {
	MultivaluedMap<String, String> map = new CaseInsensitiveMultivaluedMap<String>();
	Enumeration<?> names = msgContext.getAttribute(HttpServletRequest.class).getHeaderNames();

	if (names == null) {
		return map;
	}

	while (names.hasMoreElements()) {
		String name = (String) names.nextElement();
		Enumeration<?> headerValues = msgContext.getAttribute(HttpServletRequest.class).getHeaders(name);
		List<String> values = new ArrayList<String>();
		while (headerValues.hasMoreElements()) {
			String val = (String) headerValues.nextElement();
			if (val != null) {
				values.add(val);
			}
		}
		map.put(name, values);
	}
	return new UnmodifiableMultivaluedMap<String, String>(map);
}