@Override
public void sendError(int code, String message) throws IOException {
if (isIncluding()) return;
if (isCommitted()) LOG.warn("Committed before " + code + " " + message);
resetBuffer();
_characterEncoding = null;
setHeader(HttpHeader.EXPIRES, null);
setHeader(HttpHeader.LAST_MODIFIED, null);
setHeader(HttpHeader.CACHE_CONTROL, null);
setHeader(HttpHeader.CONTENT_TYPE, null);
setHeader(HttpHeader.CONTENT_LENGTH, null);
_outputType = OutputType.NONE;
setStatus(code);
_reason = message;
Request request = _channel.getRequest();
Throwable cause = (Throwable) request.getAttribute(Dispatcher.ERROR_EXCEPTION);
if (message == null) message = cause == null ? HttpStatus.getMessage(code) : cause.toString();
// If we are allowed to have a body
if (code != SC_NO_CONTENT
&& code != SC_NOT_MODIFIED
&& code != SC_PARTIAL_CONTENT
&& code >= SC_OK) {
ErrorHandler error_handler = null;
ContextHandler.Context context = request.getContext();
if (context != null) error_handler = context.getContextHandler().getErrorHandler();
if (error_handler == null) error_handler = _channel.getServer().getBean(ErrorHandler.class);
if (error_handler != null) {
request.setAttribute(RequestDispatcher.ERROR_STATUS_CODE, new Integer(code));
request.setAttribute(RequestDispatcher.ERROR_MESSAGE, message);
request.setAttribute(RequestDispatcher.ERROR_REQUEST_URI, request.getRequestURI());
request.setAttribute(RequestDispatcher.ERROR_SERVLET_NAME, request.getServletName());
error_handler.handle(null, _channel.getRequest(), _channel.getRequest(), this);
} else {
setHeader(HttpHeader.CACHE_CONTROL, "must-revalidate,no-cache,no-store");
setContentType(MimeTypes.Type.TEXT_HTML_8859_1.toString());
ByteArrayISO8859Writer writer = new ByteArrayISO8859Writer(2048);
if (message != null) {
message = StringUtil.replace(message, "&", "&");
message = StringUtil.replace(message, "<", "<");
message = StringUtil.replace(message, ">", ">");
}
String uri = request.getRequestURI();
if (uri != null) {
uri = StringUtil.replace(uri, "&", "&");
uri = StringUtil.replace(uri, "<", "<");
uri = StringUtil.replace(uri, ">", ">");
}
writer.write(
"<html>\n<head>\n<meta http-equiv=\"Content-Type\" content=\"text/html;charset=ISO-8859-1\"/>\n");
writer.write("<title>Error ");
writer.write(Integer.toString(code));
writer.write(' ');
if (message == null) writer.write(message);
writer.write("</title>\n</head>\n<body>\n<h2>HTTP ERROR: ");
writer.write(Integer.toString(code));
writer.write("</h2>\n<p>Problem accessing ");
writer.write(uri);
writer.write(". Reason:\n<pre> ");
writer.write(message);
writer.write("</pre>");
writer.write("</p>\n<hr /><i><small>Powered by Jetty://</small></i>");
writer.write("\n</body>\n</html>\n");
writer.flush();
setContentLength(writer.size());
writer.writeTo(getOutputStream());
writer.destroy();
}
} else if (code != SC_PARTIAL_CONTENT) {
// TODO work out why this is required?
_channel.getRequest().getHttpFields().remove(HttpHeader.CONTENT_TYPE);
_channel.getRequest().getHttpFields().remove(HttpHeader.CONTENT_LENGTH);
_characterEncoding = null;
_mimeType = null;
}
complete();
}
protected void commit(ByteBuffer content, boolean complete, Callback callback) {
// Are we excluding because of status?
Response response = _channel.getResponse();
int sc = response.getStatus();
if (sc > 0 && (sc < 200 || sc == 204 || sc == 205 || sc >= 300)) {
LOG.debug("{} exclude by status {}", this, sc);
noCompression();
if (sc == 304) {
String request_etags =
(String) _channel.getRequest().getAttribute("o.e.j.s.h.gzip.GzipHandler.etag");
String response_etag = response.getHttpFields().get(HttpHeader.ETAG);
if (request_etags != null && response_etag != null) {
String response_etag_gzip = etagGzip(response_etag);
if (request_etags.contains(response_etag_gzip))
response.getHttpFields().put(HttpHeader.ETAG, response_etag_gzip);
}
}
_interceptor.write(content, complete, callback);
return;
}
// Are we excluding because of mime-type?
String ct = response.getContentType();
if (ct != null) {
ct = MimeTypes.getContentTypeWithoutCharset(ct);
if (!_factory.isMimeTypeGzipable(StringUtil.asciiToLowerCase(ct))) {
LOG.debug("{} exclude by mimeType {}", this, ct);
noCompression();
_interceptor.write(content, complete, callback);
return;
}
}
// Has the Content-Encoding header already been set?
HttpFields fields = response.getHttpFields();
String ce = fields.get(HttpHeader.CONTENT_ENCODING);
if (ce != null) {
LOG.debug("{} exclude by content-encoding {}", this, ce);
noCompression();
_interceptor.write(content, complete, callback);
return;
}
// Are we the thread that commits?
if (_state.compareAndSet(GZState.MIGHT_COMPRESS, GZState.COMMITTING)) {
// We are varying the response due to accept encoding header.
if (_vary != null) {
if (fields.contains(HttpHeader.VARY)) fields.addCSV(HttpHeader.VARY, _vary.getValues());
else fields.add(_vary);
}
long content_length = response.getContentLength();
if (content_length < 0 && complete) content_length = content.remaining();
_deflater = _factory.getDeflater(_channel.getRequest(), content_length);
if (_deflater == null) {
LOG.debug("{} exclude no deflater", this);
_state.set(GZState.NOT_COMPRESSING);
_interceptor.write(content, complete, callback);
return;
}
fields.put(GZIP._contentEncoding);
_crc.reset();
_buffer = _channel.getByteBufferPool().acquire(_bufferSize, false);
BufferUtil.fill(_buffer, GZIP_HEADER, 0, GZIP_HEADER.length);
// Adjust headers
response.setContentLength(-1);
String etag = fields.get(HttpHeader.ETAG);
if (etag != null) fields.put(HttpHeader.ETAG, etagGzip(etag));
LOG.debug("{} compressing {}", this, _deflater);
_state.set(GZState.COMPRESSING);
gzip(content, complete, callback);
} else callback.failed(new WritePendingException());
}
