boolean headRequest = exchange.getRequestMethod().equals(Methods.HEAD);
HttpServerConnection serverConnection = (HttpServerConnection) exchange.getConnection();
HttpResponseConduit responseConduit = serverConnection.getResponseConduit();
responseConduit.reset(exchange);
StreamSinkConduit channel = responseConduit;
if (headRequest) {
//if this is a head request we add a head channel underneath the content encoding channel
//this will just discard the data
//we still go through with the rest of the logic, to make sure all headers are set correctly
channel = new HeadStreamSinkConduit(channel, terminateResponseListener(exchange));
}
final HeaderMap responseHeaders = exchange.getResponseHeaders();
// test to see if we're still persistent
String connection = responseHeaders.getFirst(Headers.CONNECTION);
if (!exchange.isPersistent()) {
responseHeaders.put(Headers.CONNECTION, Headers.CLOSE.toString());
} else if (exchange.isPersistent() && connection != null) {
if (HttpString.tryFromString(connection).equals(Headers.CLOSE)) {
exchange.setPersistent(false);
}
} else if (exchange.getConnection().getUndertowOptions().get(UndertowOptions.ALWAYS_SET_KEEP_ALIVE, true)) {
responseHeaders.put(Headers.CONNECTION, Headers.KEEP_ALIVE.toString());
}
final String contentLengthHeader = responseHeaders.getFirst(Headers.CONTENT_LENGTH);
if (contentLengthHeader != null) {
StreamSinkConduit res = handleFixedLength(exchange, headRequest, channel, responseHeaders, contentLengthHeader, serverConnection);
if (res != null) {
return res;
}
}
return handleRequestConduit(exchange, headRequest, channel, responseHeaders, terminateResponseListener(exchange));