Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 915 insertions, 0 deletions

diff --git a/netwerk/test/http3server/src/main.rs b/netwerk/test/http3server/src/main.rs
new file mode 100644
index 0000000000..51f2178c62
--- /dev/null
+++ b/netwerk/test/http3server/src/main.rs
@@ -0,0 +1,915 @@
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![deny(warnings)]
+
+use neqo_common::{event::Provider, qdebug, qinfo, qtrace, Datagram, Header};
+use neqo_crypto::{generate_ech_keys, init_db, AllowZeroRtt, AntiReplay};
+use neqo_http3::{
+    Error, Http3OrWebTransportStream, Http3Parameters, Http3Server, Http3ServerEvent,
+    WebTransportRequest, WebTransportServerEvent, WebTransportSessionAcceptAction,
+};
+use neqo_transport::server::Server;
+use neqo_transport::{
+    ConnectionEvent, ConnectionParameters, Output, RandomConnectionIdGenerator, StreamType,
+};
+use std::env;
+
+use std::cell::RefCell;
+use std::io;
+use std::path::PathBuf;
+use std::process::exit;
+use std::rc::Rc;
+use std::thread;
+use std::time::{Duration, Instant};
+
+use core::fmt::Display;
+use mio::net::UdpSocket;
+use mio::{Events, Poll, PollOpt, Ready, Token};
+use mio_extras::timer::{Builder, Timeout, Timer};
+use std::cmp::{max, min};
+use std::collections::hash_map::DefaultHasher;
+use std::collections::HashMap;
+use std::collections::HashSet;
+use std::hash::{Hash, Hasher};
+use std::mem;
+use std::net::SocketAddr;
+
+extern crate base64;
+
+const MAX_TABLE_SIZE: u64 = 65536;
+const MAX_BLOCKED_STREAMS: u16 = 10;
+const PROTOCOLS: &[&str] = &["h3-29", "h3"];
+const TIMER_TOKEN: Token = Token(0xffff);
+const ECH_CONFIG_ID: u8 = 7;
+const ECH_PUBLIC_NAME: &str = "public.example";
+
+const HTTP_RESPONSE_WITH_WRONG_FRAME: &[u8] = &[
+    0x01, 0x06, 0x00, 0x00, 0xd9, 0x54, 0x01, 0x37, // headers
+    0x0, 0x3, 0x61, 0x62, 0x63, // the first data frame
+    0x3, 0x1, 0x5, // a cancel push frame that is not allowed
+];
+
+trait HttpServer: Display {
+    fn process(&mut self, dgram: Option<Datagram>) -> Output;
+    fn process_events(&mut self);
+    fn get_timeout(&self) -> Option<Duration> {
+        None
+    }
+}
+
+struct Http3TestServer {
+    server: Http3Server,
+    // This a map from a post request to amount of data ithas been received on the request.
+    // The respons will carry the amount of data received.
+    posts: HashMap<Http3OrWebTransportStream, usize>,
+    responses: HashMap<Http3OrWebTransportStream, Vec<u8>>,
+    current_connection_hash: u64,
+    sessions_to_close: HashMap<Instant, Vec<WebTransportRequest>>,
+    sessions_to_create_stream: Vec<(WebTransportRequest, StreamType)>,
+    webtransport_bidi_stream: HashSet<Http3OrWebTransportStream>,
+}
+
+impl ::std::fmt::Display for Http3TestServer {
+    fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
+        write!(f, "{}", self.server)
+    }
+}
+
+impl Http3TestServer {
+    pub fn new(server: Http3Server) -> Self {
+        Self {
+            server,
+            posts: HashMap::new(),
+            responses: HashMap::new(),
+            current_connection_hash: 0,
+            sessions_to_close: HashMap::new(),
+            sessions_to_create_stream: Vec::new(),
+            webtransport_bidi_stream: HashSet::new(),
+        }
+    }
+
+    fn new_response(&mut self, mut stream: Http3OrWebTransportStream, mut data: Vec<u8>) {
+        if data.len() == 0 {
+            let _ = stream.stream_close_send();
+            return;
+        }
+        match stream.send_data(&data) {
+            Ok(sent) => {
+                if sent < data.len() {
+                    self.responses.insert(stream, data.split_off(sent));
+                } else {
+                    stream.stream_close_send().unwrap();
+                }
+            }
+            Err(e) => {
+                eprintln!("error is {:?}", e);
+            }
+        }
+    }
+
+    fn handle_stream_writable(&mut self, mut stream: Http3OrWebTransportStream) {
+        if let Some(data) = self.responses.get_mut(&stream) {
+            match stream.send_data(&data) {
+                Ok(sent) => {
+                    if sent < data.len() {
+                        let new_d = (*data).split_off(sent);
+                        *data = new_d;
+                    } else {
+                        stream.stream_close_send().unwrap();
+                        self.responses.remove(&stream);
+                    }
+                }
+                Err(_) => {
+                    eprintln!("Unexpected error");
+                }
+            }
+        }
+    }
+
+    fn maybe_close_session(&mut self) {
+        let now = Instant::now();
+        for (expires, sessions) in self.sessions_to_close.iter_mut() {
+            if *expires <= now {
+                for s in sessions.iter_mut() {
+                    s.close_session(0, "").unwrap();
+                }
+            }
+        }
+        self.sessions_to_close.retain(|expires, _| *expires >= now);
+    }
+
+    fn maybe_create_wt_stream(&mut self) {
+        if self.sessions_to_create_stream.is_empty() {
+            return;
+        }
+        let tuple = self.sessions_to_create_stream.pop().unwrap();
+        let mut session = tuple.0;
+        let mut wt_server_stream = session.create_stream(tuple.1).unwrap();
+        if tuple.1 == StreamType::UniDi {
+            let content = b"0123456789".to_vec();
+            wt_server_stream.send_data(&content).unwrap();
+        } else {
+            self.webtransport_bidi_stream.insert(wt_server_stream);
+        }
+    }
+}
+
+impl HttpServer for Http3TestServer {
+    fn process(&mut self, dgram: Option<Datagram>) -> Output {
+        self.server.process(dgram, Instant::now())
+    }
+
+    fn process_events(&mut self) {
+        self.maybe_close_session();
+        self.maybe_create_wt_stream();
+
+        while let Some(event) = self.server.next_event() {
+            qtrace!("Event: {:?}", event);
+            match event {
+                Http3ServerEvent::Headers {
+                    mut stream,
+                    headers,
+                    fin,
+                } => {
+                    qtrace!("Headers (request={} fin={}): {:?}", stream, fin, headers);
+
+                    // Some responses do not have content-type. This is on purpose to exercise
+                    // UnknownDecoder code.
+                    let default_ret = b"Hello World".to_vec();
+                    let default_headers = vec![
+                        Header::new(":status", "200"),
+                        Header::new("cache-control", "no-cache"),
+                        Header::new("content-length", default_ret.len().to_string()),
+                        Header::new(
+                            "x-http3-conn-hash",
+                            self.current_connection_hash.to_string(),
+                        ),
+                    ];
+
+                    let path_hdr = headers.iter().find(|&h| h.name() == ":path");
+                    match path_hdr {
+                        Some(ph) if !ph.value().is_empty() => {
+                            let path = ph.value();
+                            qtrace!("Serve request {}", path);
+                            if path == "/Response421" {
+                                let response_body = b"0123456789".to_vec();
+                                stream
+                                    .send_headers(&[
+                                        Header::new(":status", "421"),
+                                        Header::new("cache-control", "no-cache"),
+                                        Header::new("content-type", "text/plain"),
+                                        Header::new(
+                                            "content-length",
+                                            response_body.len().to_string(),
+                                        ),
+                                    ])
+                                    .unwrap();
+                                self.new_response(stream, response_body);
+                            } else if path == "/RequestCancelled" {
+                                stream
+                                    .stream_stop_sending(Error::HttpRequestCancelled.code())
+                                    .unwrap();
+                                stream
+                                    .stream_reset_send(Error::HttpRequestCancelled.code())
+                                    .unwrap();
+                            } else if path == "/VersionFallback" {
+                                stream
+                                    .stream_stop_sending(Error::HttpVersionFallback.code())
+                                    .unwrap();
+                                stream
+                                    .stream_reset_send(Error::HttpVersionFallback.code())
+                                    .unwrap();
+                            } else if path == "/EarlyResponse" {
+                                stream
+                                    .stream_stop_sending(Error::HttpNoError.code())
+                                    .unwrap();
+                            } else if path == "/RequestRejected" {
+                                stream
+                                    .stream_stop_sending(Error::HttpRequestRejected.code())
+                                    .unwrap();
+                                stream
+                                    .stream_reset_send(Error::HttpRequestRejected.code())
+                                    .unwrap();
+                            } else if path == "/.well-known/http-opportunistic" {
+                                let host_hdr = headers.iter().find(|&h| h.name() == ":authority");
+                                match host_hdr {
+                                    Some(host) if !host.value().is_empty() => {
+                                        let mut content = b"[\"http://".to_vec();
+                                        content.extend(host.value().as_bytes());
+                                        content.extend(b"\"]".to_vec());
+                                        stream
+                                            .send_headers(&[
+                                                Header::new(":status", "200"),
+                                                Header::new("cache-control", "no-cache"),
+                                                Header::new("content-type", "application/json"),
+                                                Header::new(
+                                                    "content-length",
+                                                    content.len().to_string(),
+                                                ),
+                                            ])
+                                            .unwrap();
+                                        self.new_response(stream, content);
+                                    }
+                                    _ => {
+                                        stream.send_headers(&default_headers).unwrap();
+                                        self.new_response(stream, default_ret);
+                                    }
+                                }
+                            } else if path == "/no_body" {
+                                stream
+                                    .send_headers(&[
+                                        Header::new(":status", "200"),
+                                        Header::new("cache-control", "no-cache"),
+                                    ])
+                                    .unwrap();
+                                stream.stream_close_send().unwrap();
+                            } else if path == "/no_content_length" {
+                                stream
+                                    .send_headers(&[
+                                        Header::new(":status", "200"),
+                                        Header::new("cache-control", "no-cache"),
+                                    ])
+                                    .unwrap();
+                                self.new_response(stream, vec![b'a'; 4000]);
+                            } else if path == "/content_length_smaller" {
+                                stream
+                                    .send_headers(&[
+                                        Header::new(":status", "200"),
+                                        Header::new("cache-control", "no-cache"),
+                                        Header::new("content-type", "text/plain"),
+                                        Header::new("content-length", 4000.to_string()),
+                                    ])
+                                    .unwrap();
+                                self.new_response(stream, vec![b'a'; 8000]);
+                            } else if path == "/post" {
+                                // Read all data before responding.
+                                self.posts.insert(stream, 0);
+                            } else if path == "/priority_mirror" {
+                                if let Some(priority) =
+                                    headers.iter().find(|h| h.name() == "priority")
+                                {
+                                    stream
+                                        .send_headers(&[
+                                            Header::new(":status", "200"),
+                                            Header::new("cache-control", "no-cache"),
+                                            Header::new("content-type", "text/plain"),
+                                            Header::new("priority-mirror", priority.value()),
+                                            Header::new(
+                                                "content-length",
+                                                priority.value().len().to_string(),
+                                            ),
+                                        ])
+                                        .unwrap();
+                                    self.new_response(stream, priority.value().as_bytes().to_vec());
+                                } else {
+                                    stream
+                                        .send_headers(&[
+                                            Header::new(":status", "200"),
+                                            Header::new("cache-control", "no-cache"),
+                                        ])
+                                        .unwrap();
+                                    stream.stream_close_send().unwrap();
+                                }
+                            } else if path == "/103_response" {
+                                if let Some(early_hint) =
+                                    headers.iter().find(|h| h.name() == "link-to-set")
+                                {
+                                    for l in early_hint.value().split(',') {
+                                        stream
+                                            .send_headers(&[
+                                                Header::new(":status", "103"),
+                                                Header::new("link", l),
+                                            ])
+                                            .unwrap();
+                                    }
+                                }
+                                stream
+                                    .send_headers(&[
+                                        Header::new(":status", "200"),
+                                        Header::new("cache-control", "no-cache"),
+                                        Header::new("content-length", "0"),
+                                    ])
+                                    .unwrap();
+                                stream.stream_close_send().unwrap();
+                            } else {
+                                match path.trim_matches(|p| p == '/').parse::<usize>() {
+                                    Ok(v) => {
+                                        stream
+                                            .send_headers(&[
+                                                Header::new(":status", "200"),
+                                                Header::new("cache-control", "no-cache"),
+                                                Header::new("content-type", "text/plain"),
+                                                Header::new("content-length", v.to_string()),
+                                            ])
+                                            .unwrap();
+                                        self.new_response(stream, vec![b'a'; v]);
+                                    }
+                                    Err(_) => {
+                                        stream.send_headers(&default_headers).unwrap();
+                                        self.new_response(stream, default_ret);
+                                    }
+                                }
+                            }
+                        }
+                        _ => {
+                            stream.send_headers(&default_headers).unwrap();
+                            self.new_response(stream, default_ret);
+                        }
+                    }
+                }
+                Http3ServerEvent::Data {
+                    mut stream,
+                    data,
+                    fin,
+                } => {
+                    if self.webtransport_bidi_stream.contains(&stream) {
+                        self.new_response(stream, data);
+                        break;
+                    }
+                    if let Some(r) = self.posts.get_mut(&stream) {
+                        *r += data.len();
+                    }
+                    if fin {
+                        if let Some(r) = self.posts.remove(&stream) {
+                            let default_ret = b"Hello World".to_vec();
+                            stream
+                                .send_headers(&[
+                                    Header::new(":status", "200"),
+                                    Header::new("cache-control", "no-cache"),
+                                    Header::new("x-data-received-length", r.to_string()),
+                                    Header::new("content-length", default_ret.len().to_string()),
+                                ])
+                                .unwrap();
+                            self.new_response(stream, default_ret);
+                        }
+                    }
+                }
+                Http3ServerEvent::DataWritable { stream } => self.handle_stream_writable(stream),
+                Http3ServerEvent::StateChange { conn, state } => {
+                    if matches!(state, neqo_http3::Http3State::Connected) {
+                        let mut h = DefaultHasher::new();
+                        conn.hash(&mut h);
+                        self.current_connection_hash = h.finish();
+                    }
+                }
+                Http3ServerEvent::PriorityUpdate { .. } => {}
+                Http3ServerEvent::StreamReset { stream, error } => {
+                    qtrace!("Http3ServerEvent::StreamReset {:?} {:?}", stream, error);
+                }
+                Http3ServerEvent::StreamStopSending { stream, error } => {
+                    qtrace!(
+                        "Http3ServerEvent::StreamStopSending {:?} {:?}",
+                        stream,
+                        error
+                    );
+                }
+                Http3ServerEvent::WebTransport(WebTransportServerEvent::NewSession {
+                    mut session,
+                    headers,
+                }) => {
+                    qdebug!(
+                        "WebTransportServerEvent::NewSession {:?} {:?}",
+                        session,
+                        headers
+                    );
+                    let path_hdr = headers.iter().find(|&h| h.name() == ":path");
+                    match path_hdr {
+                        Some(ph) if !ph.value().is_empty() => {
+                            let path = ph.value();
+                            qtrace!("Serve request {}", path);
+                            if path == "/success" {
+                                session
+                                    .response(&WebTransportSessionAcceptAction::Accept)
+                                    .unwrap();
+                            } else if path == "/redirect" {
+                                session
+                                    .response(&WebTransportSessionAcceptAction::Reject(
+                                        [
+                                            Header::new(":status", "302"),
+                                            Header::new("location", "/"),
+                                        ]
+                                        .to_vec(),
+                                    ))
+                                    .unwrap();
+                            } else if path == "/reject" {
+                                session
+                                    .response(&WebTransportSessionAcceptAction::Reject(
+                                        [Header::new(":status", "404")].to_vec(),
+                                    ))
+                                    .unwrap();
+                            } else if path == "/closeafter0ms" {
+                                session
+                                    .response(&WebTransportSessionAcceptAction::Accept)
+                                    .unwrap();
+                            } else if path == "/closeafter100ms" {
+                                session
+                                    .response(&WebTransportSessionAcceptAction::Accept)
+                                    .unwrap();
+                                let expires = Instant::now() + Duration::from_millis(100);
+                                if !self.sessions_to_close.contains_key(&expires) {
+                                    self.sessions_to_close.insert(expires, Vec::new());
+                                }
+                                self.sessions_to_close
+                                    .get_mut(&expires)
+                                    .unwrap()
+                                    .push(session);
+                            } else if path == "/create_unidi_stream" {
+                                session
+                                    .response(&WebTransportSessionAcceptAction::Accept)
+                                    .unwrap();
+                                self.sessions_to_create_stream
+                                    .push((session, StreamType::UniDi));
+                            } else if path == "/create_bidi_stream" {
+                                session
+                                    .response(&WebTransportSessionAcceptAction::Accept)
+                                    .unwrap();
+                                self.sessions_to_create_stream
+                                    .push((session, StreamType::BiDi));
+                            } else {
+                                session
+                                    .response(&WebTransportSessionAcceptAction::Accept)
+                                    .unwrap();
+                            }
+                        }
+                        _ => {
+                            session
+                                .response(&WebTransportSessionAcceptAction::Reject(
+                                    [Header::new(":status", "404")].to_vec(),
+                                ))
+                                .unwrap();
+                        }
+                    }
+                }
+                Http3ServerEvent::WebTransport(WebTransportServerEvent::SessionClosed {
+                    session,
+                    reason,
+                }) => {
+                    qdebug!(
+                        "WebTransportServerEvent::SessionClosed {:?} {:?}",
+                        session,
+                        reason
+                    );
+                }
+                Http3ServerEvent::WebTransport(WebTransportServerEvent::NewStream(stream)) => {
+                    if !stream.stream_info.is_http() {
+                        self.webtransport_bidi_stream.insert(stream);
+                    }
+                }
+                Http3ServerEvent::WebTransport(WebTransportServerEvent::Datagram {
+                    mut session,
+                    datagram,
+                }) => {
+                    qdebug!(
+                        "WebTransportServerEvent::Datagram {:?} {:?}",
+                        session,
+                        datagram
+                    );
+                    session.send_datagram(datagram.as_ref(), None).unwrap();
+                }
+            }
+        }
+    }
+
+    fn get_timeout(&self) -> Option<Duration> {
+        if let Some(next) = self.sessions_to_close.keys().min() {
+            return Some(max(*next - Instant::now(), Duration::from_millis(0)));
+        }
+        None
+    }
+}
+
+impl HttpServer for Server {
+    fn process(&mut self, dgram: Option<Datagram>) -> Output {
+        self.process(dgram, Instant::now())
+    }
+
+    fn process_events(&mut self) {
+        let active_conns = self.active_connections();
+        for mut acr in active_conns {
+            loop {
+                let event = match acr.borrow_mut().next_event() {
+                    None => break,
+                    Some(e) => e,
+                };
+                match event {
+                    ConnectionEvent::RecvStreamReadable { stream_id } => {
+                        if stream_id.is_bidi() && stream_id.is_client_initiated() {
+                            // We are only interesting in request streams
+                            acr.borrow_mut()
+                                .stream_send(stream_id, HTTP_RESPONSE_WITH_WRONG_FRAME)
+                                .expect("Read should succeed");
+                        }
+                    }
+                    _ => {}
+                }
+            }
+        }
+    }
+}
+
+#[derive(Default)]
+struct NonRespondingServer {}
+
+impl ::std::fmt::Display for NonRespondingServer {
+    fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
+        write!(f, "NonRespondingServer")
+    }
+}
+
+impl HttpServer for NonRespondingServer {
+    fn process(&mut self, _dgram: Option<Datagram>) -> Output {
+        Output::None
+    }
+
+    fn process_events(&mut self) {}
+}
+
+fn emit_packet(socket: &UdpSocket, out_dgram: Datagram) {
+    let res = match socket.send_to(&out_dgram, &out_dgram.destination()) {
+        Err(ref err) if err.kind() == io::ErrorKind::WouldBlock => 0,
+        Err(err) => {
+            eprintln!("UDP send error: {:?}", err);
+            exit(1);
+        }
+        Ok(res) => res,
+    };
+    if res != out_dgram.len() {
+        qinfo!("Unable to send all {} bytes of datagram", out_dgram.len());
+    }
+}
+
+fn process(
+    server: &mut dyn HttpServer,
+    svr_timeout: &mut Option<Timeout>,
+    inx: usize,
+    dgram: Option<Datagram>,
+    timer: &mut Timer<usize>,
+    socket: &mut UdpSocket,
+) -> bool {
+    match server.process(dgram) {
+        Output::Datagram(dgram) => {
+            emit_packet(socket, dgram);
+            true
+        }
+        Output::Callback(mut new_timeout) => {
+            if let Some(t) = server.get_timeout() {
+                new_timeout = min(new_timeout, t);
+            }
+            if let Some(svr_timeout) = svr_timeout {
+                timer.cancel_timeout(svr_timeout);
+            }
+
+            qinfo!("Setting timeout of {:?} for {}", new_timeout, server);
+            *svr_timeout = Some(timer.set_timeout(new_timeout, inx));
+            false
+        }
+        Output::None => {
+            qdebug!("Output::None");
+            false
+        }
+    }
+}
+
+fn read_dgram(
+    socket: &mut UdpSocket,
+    local_address: &SocketAddr,
+) -> Result<Option<Datagram>, io::Error> {
+    let buf = &mut [0u8; 2048];
+    let res = socket.recv_from(&mut buf[..]);
+    if let Some(err) = res.as_ref().err() {
+        if err.kind() != io::ErrorKind::WouldBlock {
+            eprintln!("UDP recv error: {:?}", err);
+        }
+        return Ok(None);
+    };
+
+    let (sz, remote_addr) = res.unwrap();
+    if sz == buf.len() {
+        eprintln!("Might have received more than {} bytes", buf.len());
+    }
+
+    if sz == 0 {
+        eprintln!("zero length datagram received?");
+        Ok(None)
+    } else {
+        Ok(Some(Datagram::new(remote_addr, *local_address, &buf[..sz])))
+    }
+}
+
+enum ServerType {
+    Http3,
+    Http3Fail,
+    Http3NoResponse,
+    Http3Ech,
+}
+
+struct ServersRunner {
+    hosts: Vec<SocketAddr>,
+    poll: Poll,
+    sockets: Vec<UdpSocket>,
+    servers: HashMap<SocketAddr, (Box<dyn HttpServer>, Option<Timeout>)>,
+    timer: Timer<usize>,
+    active_servers: HashSet<usize>,
+    ech_config: Vec<u8>,
+}
+
+impl ServersRunner {
+    pub fn new() -> Result<Self, io::Error> {
+        Ok(Self {
+            hosts: Vec::new(),
+            poll: Poll::new()?,
+            sockets: Vec::new(),
+            servers: HashMap::new(),
+            timer: Builder::default()
+                .tick_duration(Duration::from_millis(1))
+                .build::<usize>(),
+            active_servers: HashSet::new(),
+            ech_config: Vec::new(),
+        })
+    }
+
+    pub fn init(&mut self) {
+        self.add_new_socket(0, ServerType::Http3);
+        self.add_new_socket(1, ServerType::Http3Fail);
+        self.add_new_socket(2, ServerType::Http3Ech);
+        self.add_new_socket(4, ServerType::Http3NoResponse);
+
+        println!(
+            "HTTP3 server listening on ports {}, {}, {} and {}. EchConfig is @{}@",
+            self.hosts[0].port(),
+            self.hosts[1].port(),
+            self.hosts[2].port(),
+            self.hosts[3].port(),
+            base64::encode(&self.ech_config)
+        );
+        self.poll
+            .register(&self.timer, TIMER_TOKEN, Ready::readable(), PollOpt::edge())
+            .unwrap();
+    }
+
+    fn add_new_socket(&mut self, count: usize, server_type: ServerType) -> u16 {
+        let addr = "127.0.0.1:0".parse().unwrap();
+
+        let socket = match UdpSocket::bind(&addr) {
+            Err(err) => {
+                eprintln!("Unable to bind UDP socket: {}", err);
+                exit(1)
+            }
+            Ok(s) => s,
+        };
+
+        let local_addr = match socket.local_addr() {
+            Err(err) => {
+                eprintln!("Socket local address not bound: {}", err);
+                exit(1)
+            }
+            Ok(s) => s,
+        };
+
+        self.hosts.push(local_addr);
+
+        self.poll
+            .register(
+                &socket,
+                Token(count),
+                Ready::readable() | Ready::writable(),
+                PollOpt::edge(),
+            )
+            .unwrap();
+
+        self.sockets.push(socket);
+        let server = self.create_server(server_type);
+        self.servers.insert(local_addr, (server, None));
+        local_addr.port()
+    }
+
+    fn create_server(&mut self, server_type: ServerType) -> Box<dyn HttpServer> {
+        let anti_replay = AntiReplay::new(Instant::now(), Duration::from_secs(10), 7, 14)
+            .expect("unable to setup anti-replay");
+        let cid_mgr = Rc::new(RefCell::new(RandomConnectionIdGenerator::new(10)));
+
+        match server_type {
+            ServerType::Http3 => Box::new(Http3TestServer::new(
+                Http3Server::new(
+                    Instant::now(),
+                    &[" HTTP2 Test Cert"],
+                    PROTOCOLS,
+                    anti_replay,
+                    cid_mgr,
+                    Http3Parameters::default()
+                        .max_table_size_encoder(MAX_TABLE_SIZE)
+                        .max_table_size_decoder(MAX_TABLE_SIZE)
+                        .max_blocked_streams(MAX_BLOCKED_STREAMS)
+                        .webtransport(true)
+                        .connection_parameters(ConnectionParameters::default().datagram_size(1200)),
+                    None,
+                )
+                .expect("We cannot make a server!"),
+            )),
+            ServerType::Http3Fail => Box::new(
+                Server::new(
+                    Instant::now(),
+                    &[" HTTP2 Test Cert"],
+                    PROTOCOLS,
+                    anti_replay,
+                    Box::new(AllowZeroRtt {}),
+                    cid_mgr,
+                    ConnectionParameters::default(),
+                )
+                .expect("We cannot make a server!"),
+            ),
+            ServerType::Http3NoResponse => Box::new(NonRespondingServer::default()),
+            ServerType::Http3Ech => {
+                let mut server = Box::new(Http3TestServer::new(
+                    Http3Server::new(
+                        Instant::now(),
+                        &[" HTTP2 Test Cert"],
+                        PROTOCOLS,
+                        anti_replay,
+                        cid_mgr,
+                        Http3Parameters::default()
+                            .max_table_size_encoder(MAX_TABLE_SIZE)
+                            .max_table_size_decoder(MAX_TABLE_SIZE)
+                            .max_blocked_streams(MAX_BLOCKED_STREAMS),
+                        None,
+                    )
+                    .expect("We cannot make a server!"),
+                ));
+                let ref mut unboxed_server = (*server).server;
+                let (sk, pk) = generate_ech_keys().unwrap();
+                unboxed_server
+                    .enable_ech(ECH_CONFIG_ID, ECH_PUBLIC_NAME, &sk, &pk)
+                    .expect("unable to enable ech");
+                self.ech_config = Vec::from(unboxed_server.ech_config());
+                server
+            }
+        }
+    }
+
+    fn process_datagrams_and_events(
+        &mut self,
+        inx: usize,
+        read_socket: bool,
+    ) -> Result<(), io::Error> {
+        if let Some(socket) = self.sockets.get_mut(inx) {
+            if let Some((ref mut server, svr_timeout)) =
+                self.servers.get_mut(&socket.local_addr().unwrap())
+            {
+                if read_socket {
+                    loop {
+                        let dgram = read_dgram(socket, &self.hosts[inx])?;
+                        if dgram.is_none() {
+                            break;
+                        }
+                        let _ = process(
+                            &mut **server,
+                            svr_timeout,
+                            inx,
+                            dgram,
+                            &mut self.timer,
+                            socket,
+                        );
+                    }
+                } else {
+                    let _ = process(
+                        &mut **server,
+                        svr_timeout,
+                        inx,
+                        None,
+                        &mut self.timer,
+                        socket,
+                    );
+                }
+                server.process_events();
+                if process(
+                    &mut **server,
+                    svr_timeout,
+                    inx,
+                    None,
+                    &mut self.timer,
+                    socket,
+                ) {
+                    self.active_servers.insert(inx);
+                }
+            }
+        }
+        Ok(())
+    }
+
+    fn process_active_conns(&mut self) -> Result<(), io::Error> {
+        let curr_active = mem::take(&mut self.active_servers);
+        for inx in curr_active {
+            self.process_datagrams_and_events(inx, false)?;
+        }
+        Ok(())
+    }
+
+    fn process_timeout(&mut self) -> Result<(), io::Error> {
+        while let Some(inx) = self.timer.poll() {
+            qinfo!("Timer expired for {:?}", inx);
+            self.process_datagrams_and_events(inx, false)?;
+        }
+        Ok(())
+    }
+
+    pub fn run(&mut self) -> Result<(), io::Error> {
+        let mut events = Events::with_capacity(1024);
+        loop {
+            // If there are active servers do not block in poll.
+            self.poll.poll(
+                &mut events,
+                if self.active_servers.is_empty() {
+                    None
+                } else {
+                    Some(Duration::from_millis(0))
+                },
+            )?;
+
+            for event in &events {
+                if event.token() == TIMER_TOKEN {
+                    self.process_timeout()?;
+                } else {
+                    if !event.readiness().is_readable() {
+                        continue;
+                    }
+                    self.process_datagrams_and_events(event.token().0, true)?;
+                }
+            }
+            self.process_active_conns()?;
+        }
+    }
+}
+
+fn main() -> Result<(), io::Error> {
+    let args: Vec<String> = env::args().collect();
+    if args.len() < 2 {
+        eprintln!("Wrong arguments.");
+        exit(1)
+    }
+
+    // Read data from stdin and terminate the server if EOF is detected, which
+    // means that runxpcshelltests.py ended without shutting down the server.
+    thread::spawn(|| loop {
+        let mut buffer = String::new();
+        match io::stdin().read_line(&mut buffer) {
+            Ok(n) => {
+                if n == 0 {
+                    exit(0);
+                }
+            }
+            Err(_) => {
+                exit(0);
+            }
+        }
+    });
+
+    init_db(PathBuf::from(args[1].clone()));
+
+    let mut servers_runner = ServersRunner::new()?;
+    servers_runner.init();
+    servers_runner.run()
+}