Thanks Greg, I was able to get it working with the following code:
@Override
protected void onResponseContent(HttpServletRequest request,
HttpServletResponse response, Response proxyResponse, byte[] buffer, int
offset, int length, Callback callback) {
super.onResponseContent(request, response, proxyResponse, buffer, offset,
length, new Callback.Nested(callback) {
@Override
public void completed() {
if("text/event-stream".equalsIgnoreCase(response.getContentType())) {
try {
response.flushBuffer();
((org.eclipse.jetty.server.Response)response).getHttpOutput().isReady();
}
catch(Exception e) {
throw new RuntimeException(e);
}
}
}
});}
The call to isReady() seems to be necessary with AsyncProxyServlet, but not
with ProxyServlet.
------- Original Message -------
On Monday, July 11th, 2022 at 10:13 PM, Greg Wilkins <gr...@webtide.com> wrote:
> You are able to call response.flushBuffers() to flush any buffered content.
>
> On Tue, 12 July 2022, 14:25 LP via jetty-users, <jetty-users@eclipse.org>
> wrote:
>
>> Hi,
>>
>> My understanding of HTTP/1.1 chunking is that it's considered to be a
>> hop-to-hop feature, and so if the server behind an (Async)ProxyServlet
>> responds with a stream of small chunks they can be buffered. This poses a
>> challenge for some chunking use-cases, including SSE (Server Sent Events).
>> One workaround I found for SSE is to send a large-ish "flush" event with
>> some random junk after each "real" event to push the real event through the
>> buffer. This works fine when the events aren't too frequent, but it's
>> obviously not a great solution.
>>
>> Is there any functionality available that allows for setting a timeout in
>> the ProxyServlet after which any buffered response content would
>> automatically be flushed via chunking? If not, would this be difficult to
>> implement?
>>
>> Jetty rules!
>>
>> Thanks,
>> LP
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