sendListing() — netty Function Reference

Architecture documentation for the sendListing() function in HttpStaticFileServerHandler.java from the netty codebase.

Function java Buffer Telemetry calls 1 called by 1

Entity Profile

Buffer→ Telemetry→ sendListing() — netty Function Reference

Dependency Diagram

graph TD
  2d9abdcf_0bde_4318_74f6_8a20cb48fc08["sendListing()"]
  02ca82d7_508c_aabe_bb4d_dd1603c38b01["HttpStaticFileServerHandler"]
  2d9abdcf_0bde_4318_74f6_8a20cb48fc08 -->|defined in| 02ca82d7_508c_aabe_bb4d_dd1603c38b01
  d39f8eb8_b352_59dc_d244_4e113cd078df["channelRead0()"]
  d39f8eb8_b352_59dc_d244_4e113cd078df -->|calls| 2d9abdcf_0bde_4318_74f6_8a20cb48fc08
  387357b5_0623_04d6_d7dd_f0074f835df9["sendAndCleanupConnection()"]
  2d9abdcf_0bde_4318_74f6_8a20cb48fc08 -->|calls| 387357b5_0623_04d6_d7dd_f0074f835df9
  style 2d9abdcf_0bde_4318_74f6_8a20cb48fc08 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

example/src/main/java/io/netty/example/http/file/HttpStaticFileServerHandler.java lines 274–318

    private void sendListing(ChannelHandlerContext ctx, File dir, String dirPath) {
        StringBuilder buf = new StringBuilder()
                .append("<!DOCTYPE html>\r\n")
                .append("<html><head><meta charset='utf-8' /><title>")
                .append("Listing of: ")
                .append(dirPath)
                .append("</title></head><body>\r\n")

                .append("<h3>Listing of: ")
                .append(dirPath)
                .append("</h3>\r\n")

                .append("<ul>")
                .append("<li><a href=\"../\">..</a></li>\r\n");

        File[] files = dir.listFiles();
        if (files != null) {
            for (File f: files) {
                if (f.isHidden() || !f.canRead()) {
                    continue;
                }

                String name = f.getName();
                if (!ALLOWED_FILE_NAME.matcher(name).matches()) {
                    continue;
                }

                buf.append("<li><a href=\"")
                        .append(name)
                        .append("\">")
                        .append(name)
                        .append("</a></li>\r\n");
            }
        }

        buf.append("</ul></body></html>\r\n");

        ByteBuf buffer = ctx.alloc().buffer(buf.length());
        buffer.writeCharSequence(buf.toString(), CharsetUtil.UTF_8);

        FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, OK, buffer);
        response.headers().set(HttpHeaderNames.CONTENT_TYPE, "text/html; charset=UTF-8");

        sendAndCleanupConnection(ctx, response);
    }