setUpgradeRequestHeaders() — netty Function Reference

Source Code

codec-http/src/main/java/io/netty/handler/codec/http/HttpClientUpgradeHandler.java lines 267–283

    private void setUpgradeRequestHeaders(ChannelHandlerContext ctx, HttpRequest request) {
        // Set the UPGRADE header on the request.
        request.headers().set(HttpHeaderNames.UPGRADE, upgradeCodec.protocol());

        // Add all protocol-specific headers to the request.
        Set<CharSequence> connectionParts = new LinkedHashSet<CharSequence>(2);
        connectionParts.addAll(upgradeCodec.setUpgradeHeaders(ctx, request));

        // Set the CONNECTION header from the set of all protocol-specific headers that were added.
        StringBuilder builder = new StringBuilder();
        for (CharSequence part : connectionParts) {
            builder.append(part);
            builder.append(',');
        }
        builder.append(HttpHeaderValues.UPGRADE);
        request.headers().add(HttpHeaderNames.CONNECTION, builder.toString());
    }