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A QUIC implementation in Java
/*
* Copyright © 2022, 2023 Peter Doornbosch
*
* This file is part of Kwik, an implementation of the QUIC protocol in Java.
*
* Kwik is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* Kwik is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
* more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see .
*/
package net.luminis.quic.run;
import net.luminis.quic.core.Version;
import net.luminis.quic.log.FileLogger;
import net.luminis.quic.log.Logger;
import net.luminis.quic.log.SysOutLogger;
import net.luminis.quic.server.ApplicationProtocolConnectionFactory;
import net.luminis.quic.server.ServerConnector;
import org.apache.commons.cli.*;
import java.io.File;
import java.io.FileInputStream;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.List;
/**
* Simple sample HTTP3 Web server.
*/
public class SampleWebServer {
private static void usageAndExit() {
System.err.println("Usage: [--noRetry] cert file, cert key file, port number, www dir");
System.exit(1);
}
public static void main(String[] rawArgs) throws Exception {
Options cmdLineOptions = new Options();
cmdLineOptions.addOption(null, "noRetry", false, "disable always use retry");
CommandLineParser parser = new DefaultParser();
CommandLine cmd = null;
try {
cmd = parser.parse(cmdLineOptions, rawArgs);
}
catch (ParseException argError) {
System.out.println("Invalid argument: " + argError.getMessage());
usageAndExit();
}
List args = cmd.getArgList();
if (args.size() < 4) {
usageAndExit();
}
Logger log;
File logDir = new File("/logs");
if (logDir.exists() && logDir.isDirectory() && logDir.canWrite()) {
log = new FileLogger(new File(logDir, "kwikserver.log"));
}
else {
log = new SysOutLogger();
}
log.timeFormat(Logger.TimeFormat.Long);
log.logWarning(true);
log.logInfo(true);
File certificateFile = new File(args.get(0));
if (!certificateFile.exists()) {
System.err.println("Cannot open certificate file " + args.get(0));
System.exit(1);
}
File certificateKeyFile = new File(args.get(1));
if (!certificateKeyFile.exists()) {
System.err.println("Cannot open certificate file " + args.get(1));
System.exit(1);
}
int port = Integer.parseInt(args.get(2));
File wwwDir = new File(args.get(3));
if (!wwwDir.exists() || !wwwDir.isDirectory() || !wwwDir.canRead()) {
System.err.println("Cannot read www dir '" + wwwDir + "'");
System.exit(1);
}
List supportedVersions = new ArrayList<>();
supportedVersions.add(Version.QUIC_version_1);
supportedVersions.add(Version.QUIC_version_2);
boolean requireRetry = ! cmd.hasOption("noRetry");
ServerConnector serverConnector = new ServerConnector(port, new FileInputStream(certificateFile), new FileInputStream(certificateKeyFile), supportedVersions, requireRetry, log);
registerHttp3(serverConnector, wwwDir, supportedVersions, log);
serverConnector.start();
log.info("Kwik server " + KwikVersion.getVersion() + " started; supported application protocols: "
+ serverConnector.getRegisteredApplicationProtocols());
}
private static void registerHttp3(ServerConnector serverConnector, File wwwDir, List supportedVersions, Logger log) {
ApplicationProtocolConnectionFactory http3ApplicationProtocolConnectionFactory = null;
try {
// If flupke server plugin is on classpath, load the http3 connection factory class.
Class> http3FactoryClass = SampleWebServer.class.getClassLoader().loadClass("net.luminis.http3.server.Http3ApplicationProtocolFactory");
http3ApplicationProtocolConnectionFactory = (ApplicationProtocolConnectionFactory)
http3FactoryClass.getDeclaredConstructor(new Class[]{ File.class }).newInstance(wwwDir);
log.info("Loading Flupke H3 server plugin");
serverConnector.registerApplicationProtocol("h3", http3ApplicationProtocolConnectionFactory);
} catch (ClassNotFoundException | NoSuchMethodException | InstantiationException | IllegalAccessException | InvocationTargetException e) {
log.error("No H3 protocol: Flupke plugin not found.");
System.exit(1);
}
}
}