Method writeTrailers

java/org/apache/coyote/http2/Stream.java:635–667

()

    final void writeTrailers() throws IOException {
        Supplier<Map<String,String>> trailerFieldsSupplier = coyoteResponse.getTrailerFields();
        if (trailerFieldsSupplier == null) {
            // No supplier was set, end of stream will already have been sent
            return;
        }

        /*
         * Need a dedicated MimeHeaders for trailers as the MimeHeaders from the response needs to be retained in case
         * the access log needs to log header values.
         */
        MimeHeaders mimeHeaders = new MimeHeaders();

        Map<String,String> trailerFields = trailerFieldsSupplier.get();
        if (trailerFields == null) {
            trailerFields = Collections.emptyMap();
        }

        // Copy the contents of the Map to the MimeHeaders
        // TODO: Is there benefit in refactoring this? Is MimeHeaders too
        // heavyweight? Can we reduce the copy/conversions?
        for (Map.Entry<String,String> trailerField : trailerFields.entrySet()) {
            // Ignore disallowed headers
            if (HeaderUtil.isHeaderDisallowedInTrailers(trailerField.getKey())) {
                continue;
            }

            MessageBytes mb = mimeHeaders.addValue(trailerField.getKey());
            mb.setString(trailerField.getValue());
        }

        handler.writeHeaders(this, mimeHeaders, true, Constants.DEFAULT_HEADERS_FRAME_SIZE);
    }


    final void writeAck() throws IOException {