2022-09-06 06:56:04 -04:00
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//! Server process
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use crate::close::Close;
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use crate::close::CloseCmd;
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2022-09-11 12:01:36 -04:00
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use crate::config::{Settings, VerifiedUsersMode};
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2022-09-06 06:56:04 -04:00
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use crate::conn;
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2023-01-22 10:49:49 -05:00
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use crate::repo::NostrRepo;
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2022-09-06 06:56:04 -04:00
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use crate::db;
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use crate::db::SubmittedEvent;
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use crate::error::{Error, Result};
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use crate::event::Event;
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use crate::event::EventCmd;
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use crate::info::RelayInfo;
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use crate::nip05;
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2022-11-10 17:27:10 -05:00
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use crate::notice::Notice;
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use crate::subscription::Subscription;
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2023-01-28 16:46:26 -05:00
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use prometheus::{Encoder, Histogram, IntCounter, HistogramOpts, Opts, Registry, TextEncoder};
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2022-09-06 06:56:04 -04:00
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use futures::SinkExt;
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use futures::StreamExt;
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2022-12-17 10:27:29 -05:00
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use governor::{Jitter, Quota, RateLimiter};
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2022-11-03 14:01:38 -04:00
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use http::header::HeaderMap;
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2022-09-06 06:56:04 -04:00
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use hyper::header::ACCEPT;
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use hyper::service::{make_service_fn, service_fn};
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use hyper::upgrade::Upgraded;
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use hyper::{
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header, server::conn::AddrStream, upgrade, Body, Request, Response, Server, StatusCode,
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};
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use serde::{Deserialize, Serialize};
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use serde_json::json;
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use std::collections::HashMap;
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use std::convert::Infallible;
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use std::net::SocketAddr;
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use std::path::Path;
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2022-12-27 10:48:07 -05:00
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use std::sync::Arc;
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2022-12-25 11:45:41 -05:00
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use std::sync::atomic::Ordering;
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use std::sync::mpsc::Receiver as MpscReceiver;
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use std::time::Duration;
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use std::time::Instant;
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use tokio::runtime::Builder;
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use tokio::sync::broadcast::{self, Receiver, Sender};
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use tokio::sync::mpsc;
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use tokio::sync::oneshot;
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use tokio_tungstenite::WebSocketStream;
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2023-01-22 10:49:49 -05:00
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use tracing::{debug, error, info, trace, warn};
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2022-09-06 06:56:04 -04:00
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use tungstenite::error::CapacityError::MessageTooLong;
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use tungstenite::error::Error as WsError;
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use tungstenite::handshake;
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use tungstenite::protocol::Message;
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use tungstenite::protocol::WebSocketConfig;
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2023-01-22 10:49:49 -05:00
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/// Handle arbitrary HTTP requests, including for `WebSocket` upgrades.
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async fn handle_web_request(
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mut request: Request<Body>,
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repo: Arc<dyn NostrRepo>,
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settings: Settings,
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remote_addr: SocketAddr,
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broadcast: Sender<Event>,
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event_tx: tokio::sync::mpsc::Sender<SubmittedEvent>,
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shutdown: Receiver<()>,
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registry: Registry,
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metrics: NostrMetrics,
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) -> Result<Response<Body>, Infallible> {
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match (
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request.uri().path(),
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request.headers().contains_key(header::UPGRADE),
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) {
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// Request for / as websocket
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("/", true) => {
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trace!("websocket with upgrade request");
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//assume request is a handshake, so create the handshake response
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let response = match handshake::server::create_response_with_body(&request, || {
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Body::empty()
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}) {
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Ok(response) => {
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//in case the handshake response creation succeeds,
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//spawn a task to handle the websocket connection
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tokio::spawn(async move {
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//using the hyper feature of upgrading a connection
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match upgrade::on(&mut request).await {
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//if successfully upgraded
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Ok(upgraded) => {
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// set WebSocket configuration options
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let config = WebSocketConfig {
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max_send_queue: Some(1024),
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max_message_size: settings.limits.max_ws_message_bytes,
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max_frame_size: settings.limits.max_ws_frame_bytes,
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..Default::default()
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};
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//create a websocket stream from the upgraded object
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let ws_stream = WebSocketStream::from_raw_socket(
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//pass the upgraded object
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//as the base layer stream of the Websocket
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upgraded,
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tokio_tungstenite::tungstenite::protocol::Role::Server,
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Some(config),
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)
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.await;
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let origin = get_header_string("origin", request.headers());
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let user_agent = get_header_string("user-agent", request.headers());
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2022-11-04 19:05:01 -04:00
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// determine the remote IP from headers if the exist
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let header_ip = settings
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.network
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.remote_ip_header
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.as_ref()
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.and_then(|x| get_header_string(x, request.headers()));
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// use the socket addr as a backup
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let remote_ip =
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header_ip.unwrap_or_else(|| remote_addr.ip().to_string());
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let client_info = ClientInfo {
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remote_ip,
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user_agent,
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origin,
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};
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// spawn a nostr server with our websocket
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tokio::spawn(nostr_server(
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repo,
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client_info,
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settings,
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ws_stream,
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broadcast,
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event_tx,
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shutdown,
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metrics,
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));
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}
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2022-11-02 19:33:44 -04:00
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// todo: trace, don't print...
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Err(e) => println!(
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"error when trying to upgrade connection \
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from address {} to websocket connection. \
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Error is: {}",
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remote_addr, e
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),
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}
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});
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//return the response to the handshake request
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response
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}
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Err(error) => {
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warn!("websocket response failed");
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let mut res =
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Response::new(Body::from(format!("Failed to create websocket: {}", error)));
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*res.status_mut() = StatusCode::BAD_REQUEST;
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return Ok(res);
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}
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};
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Ok::<_, Infallible>(response)
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}
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// Request for Relay info
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("/", false) => {
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// handle request at root with no upgrade header
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// Check if this is a nostr server info request
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let accept_header = &request.headers().get(ACCEPT);
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// check if application/nostr+json is included
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if let Some(media_types) = accept_header {
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if let Ok(mt_str) = media_types.to_str() {
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if mt_str.contains("application/nostr+json") {
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// build a relay info response
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debug!("Responding to server info request");
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let rinfo = RelayInfo::from(settings.info);
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let b = Body::from(serde_json::to_string_pretty(&rinfo).unwrap());
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return Ok(Response::builder()
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.status(200)
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.header("Content-Type", "application/nostr+json")
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.header("Access-Control-Allow-Origin", "*")
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.body(b)
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.unwrap());
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2022-09-06 06:56:04 -04:00
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}
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}
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}
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Ok(Response::builder()
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.status(200)
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.header("Content-Type", "text/plain")
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.body(Body::from("Please use a Nostr client to connect."))
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.unwrap())
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2022-09-06 06:56:04 -04:00
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}
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("/metrics", false) => {
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let mut buffer = vec![];
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let encoder = TextEncoder::new();
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let metric_families = registry.gather();
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encoder.encode(&metric_families, &mut buffer).unwrap();
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Ok(Response::builder()
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.status(StatusCode::OK)
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.header("Content-Type", "text/plain")
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.body(Body::from(buffer))
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.unwrap())
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}
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(_, _) => {
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//handle any other url
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Ok(Response::builder()
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.status(StatusCode::NOT_FOUND)
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.body(Body::from("Nothing here."))
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.unwrap())
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2022-09-06 06:56:04 -04:00
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}
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}
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}
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2022-11-04 20:33:50 -04:00
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fn get_header_string(header: &str, headers: &HeaderMap) -> Option<String> {
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headers
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.get(header)
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.and_then(|x| x.to_str().ok().map(std::string::ToString::to_string))
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2022-11-03 14:01:38 -04:00
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}
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2022-09-06 07:12:07 -04:00
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// return on a control-c or internally requested shutdown signal
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async fn ctrl_c_or_signal(mut shutdown_signal: Receiver<()>) {
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let mut term_signal = tokio::signal::unix::signal(tokio::signal::unix::SignalKind::terminate())
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.expect("could not define signal");
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loop {
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tokio::select! {
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_ = shutdown_signal.recv() => {
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info!("Shutting down webserver as requested");
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// server shutting down, exit loop
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break;
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},
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_ = tokio::signal::ctrl_c() => {
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info!("Shutting down webserver due to SIGINT");
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break;
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},
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_ = term_signal.recv() => {
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info!("Shutting down webserver due to SIGTERM");
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break;
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},
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}
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}
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2022-09-06 06:56:04 -04:00
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}
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/// Start running a Nostr relay server.
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2023-01-22 10:49:49 -05:00
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pub fn start_server(settings: &Settings, shutdown_rx: MpscReceiver<()>) -> Result<(), Error> {
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trace!("Config: {:?}", settings);
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// do some config validation.
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if !Path::new(&settings.database.data_directory).is_dir() {
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error!("Database directory does not exist");
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return Err(Error::DatabaseDirError);
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}
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let addr = format!(
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"{}:{}",
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settings.network.address.trim(),
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settings.network.port
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);
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let socket_addr = addr.parse().expect("listening address not valid");
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// address whitelisting settings
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if let Some(addr_whitelist) = &settings.authorization.pubkey_whitelist {
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info!(
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"Event publishing restricted to {} pubkey(s)",
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addr_whitelist.len()
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);
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}
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// check if NIP-05 enforced user verification is on
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if settings.verified_users.is_active() {
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info!(
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"NIP-05 user verification mode:{:?}",
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settings.verified_users.mode
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);
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if let Some(d) = settings.verified_users.verify_update_duration() {
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info!("NIP-05 check user verification every: {:?}", d);
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}
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if let Some(d) = settings.verified_users.verify_expiration_duration() {
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info!("NIP-05 user verification expires after: {:?}", d);
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}
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if let Some(wl) = &settings.verified_users.domain_whitelist {
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info!("NIP-05 domain whitelist: {:?}", wl);
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}
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if let Some(bl) = &settings.verified_users.domain_blacklist {
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info!("NIP-05 domain blacklist: {:?}", bl);
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}
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}
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// configure tokio runtime
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let rt = Builder::new_multi_thread()
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.enable_all()
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.thread_name_fn(|| {
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// give each thread a unique numeric name
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static ATOMIC_ID: std::sync::atomic::AtomicUsize = std::sync::atomic::AtomicUsize::new(0);
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let id = ATOMIC_ID.fetch_add(1,Ordering::SeqCst);
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format!("tokio-ws-{}", id)
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})
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// limit concurrent SQLite blocking threads
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2022-12-18 10:14:04 -05:00
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.max_blocking_threads(settings.limits.max_blocking_threads)
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.on_thread_start(|| {
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trace!("started new thread: {:?}", std::thread::current().name());
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|
})
|
|
|
|
|
.on_thread_stop(|| {
|
2023-01-22 11:06:44 -05:00
|
|
|
trace!("stopped thread: {:?}", std::thread::current().name());
|
2022-12-18 10:14:04 -05:00
|
|
|
})
|
2022-09-06 06:56:04 -04:00
|
|
|
.build()
|
|
|
|
|
.unwrap();
|
|
|
|
|
// start tokio
|
|
|
|
|
rt.block_on(async {
|
2022-09-06 07:12:07 -04:00
|
|
|
let broadcast_buffer_limit = settings.limits.broadcast_buffer;
|
|
|
|
|
let persist_buffer_limit = settings.limits.event_persist_buffer;
|
|
|
|
|
let verified_users_active = settings.verified_users.is_active();
|
|
|
|
|
let settings = settings.clone();
|
2022-09-06 06:56:04 -04:00
|
|
|
info!("listening on: {}", socket_addr);
|
|
|
|
|
// all client-submitted valid events are broadcast to every
|
|
|
|
|
// other client on this channel. This should be large enough
|
|
|
|
|
// to accomodate slower readers (messages are dropped if
|
|
|
|
|
// clients can not keep up).
|
|
|
|
|
let (bcast_tx, _) = broadcast::channel::<Event>(broadcast_buffer_limit);
|
|
|
|
|
// validated events that need to be persisted are sent to the
|
|
|
|
|
// database on via this channel.
|
|
|
|
|
let (event_tx, event_rx) = mpsc::channel::<SubmittedEvent>(persist_buffer_limit);
|
|
|
|
|
// establish a channel for letting all threads now about a
|
|
|
|
|
// requested server shutdown.
|
|
|
|
|
let (invoke_shutdown, shutdown_listen) = broadcast::channel::<()>(1);
|
|
|
|
|
// create a channel for sending any new metadata event. These
|
|
|
|
|
// will get processed relatively slowly (a potentially
|
|
|
|
|
// multi-second blocking HTTP call) on a single thread, so we
|
|
|
|
|
// buffer requests on the channel. No harm in dropping events
|
|
|
|
|
// here, since we are protecting against DoS. This can make
|
|
|
|
|
// it difficult to setup initial metadata in bulk, since
|
|
|
|
|
// overwhelming this will drop events and won't register
|
|
|
|
|
// metadata events.
|
|
|
|
|
let (metadata_tx, metadata_rx) = broadcast::channel::<Event>(4096);
|
2023-01-22 12:08:12 -05:00
|
|
|
|
|
|
|
|
// setup prometheus registry
|
|
|
|
|
let registry = Registry::new();
|
|
|
|
|
|
|
|
|
|
let query_sub = Histogram::with_opts(HistogramOpts::new(
|
|
|
|
|
"query_sub",
|
|
|
|
|
"Subscription response times",
|
2023-01-28 16:46:26 -05:00
|
|
|
)).unwrap();
|
2023-01-22 12:08:12 -05:00
|
|
|
let write_events = Histogram::with_opts(HistogramOpts::new(
|
|
|
|
|
"write_event",
|
|
|
|
|
"Event writing response times",
|
2023-01-28 16:46:26 -05:00
|
|
|
)).unwrap();
|
2023-01-28 18:09:21 -05:00
|
|
|
let sent_events = IntCounter::with_opts(Opts::new(
|
|
|
|
|
"sent_event",
|
|
|
|
|
"Events sent",
|
|
|
|
|
)).unwrap();
|
2023-01-28 16:46:26 -05:00
|
|
|
let connections = IntCounter::with_opts(Opts::new(
|
|
|
|
|
"connections",
|
2023-01-28 18:09:21 -05:00
|
|
|
"New connections",
|
2023-01-28 16:46:26 -05:00
|
|
|
)).unwrap();
|
2023-01-28 17:05:58 -05:00
|
|
|
let query_aborts = IntCounter::with_opts(Opts::new(
|
|
|
|
|
"query_abort",
|
2023-01-28 18:09:21 -05:00
|
|
|
"Aborted queries",
|
2023-01-28 17:05:58 -05:00
|
|
|
)).unwrap();
|
2023-01-22 12:08:12 -05:00
|
|
|
registry.register(Box::new(query_sub.clone())).unwrap();
|
|
|
|
|
registry.register(Box::new(write_events.clone())).unwrap();
|
2023-01-28 18:09:21 -05:00
|
|
|
registry.register(Box::new(sent_events.clone())).unwrap();
|
2023-01-22 12:08:12 -05:00
|
|
|
registry.register(Box::new(connections.clone())).unwrap();
|
2023-01-28 17:05:58 -05:00
|
|
|
registry.register(Box::new(query_aborts.clone())).unwrap();
|
2023-01-22 12:08:12 -05:00
|
|
|
let metrics = NostrMetrics {
|
|
|
|
|
query_sub,
|
|
|
|
|
write_events,
|
2023-01-28 18:09:21 -05:00
|
|
|
sent_events,
|
2023-01-22 12:08:12 -05:00
|
|
|
connections,
|
2023-01-28 17:05:58 -05:00
|
|
|
query_aborts,
|
2023-01-22 12:08:12 -05:00
|
|
|
};
|
2023-01-22 11:06:44 -05:00
|
|
|
// build a repository for events
|
2023-01-22 12:08:12 -05:00
|
|
|
let repo = db::build_repo(&settings, metrics.clone()).await;
|
2023-01-22 10:49:49 -05:00
|
|
|
// start the database writer task. Give it a channel for
|
2022-09-06 06:56:04 -04:00
|
|
|
// writing events, and for publishing events that have been
|
|
|
|
|
// written (to all connected clients).
|
2023-01-22 11:06:44 -05:00
|
|
|
tokio::task::spawn(
|
2023-01-22 10:49:49 -05:00
|
|
|
db::db_writer(
|
2023-01-22 11:06:44 -05:00
|
|
|
repo.clone(),
|
|
|
|
|
settings.clone(),
|
|
|
|
|
event_rx,
|
|
|
|
|
bcast_tx.clone(),
|
|
|
|
|
metadata_tx.clone(),
|
|
|
|
|
shutdown_listen,
|
2023-01-22 10:49:49 -05:00
|
|
|
));
|
2022-09-06 06:56:04 -04:00
|
|
|
info!("db writer created");
|
|
|
|
|
|
2022-09-11 12:01:36 -04:00
|
|
|
// create a nip-05 verifier thread; if enabled.
|
|
|
|
|
if settings.verified_users.mode != VerifiedUsersMode::Disabled {
|
|
|
|
|
let verifier_opt =
|
2023-01-22 10:49:49 -05:00
|
|
|
nip05::Verifier::new(repo.clone(), metadata_rx, bcast_tx.clone(), settings.clone());
|
2022-09-11 12:01:36 -04:00
|
|
|
if let Ok(mut v) = verifier_opt {
|
|
|
|
|
if verified_users_active {
|
|
|
|
|
tokio::task::spawn(async move {
|
|
|
|
|
info!("starting up NIP-05 verifier...");
|
|
|
|
|
v.run().await;
|
|
|
|
|
});
|
|
|
|
|
}
|
2022-09-06 06:56:04 -04:00
|
|
|
}
|
|
|
|
|
}
|
2022-12-22 16:16:21 -05:00
|
|
|
|
2022-09-06 07:12:07 -04:00
|
|
|
// listen for (external to tokio) shutdown request
|
|
|
|
|
let controlled_shutdown = invoke_shutdown.clone();
|
|
|
|
|
tokio::spawn(async move {
|
|
|
|
|
info!("control message listener started");
|
|
|
|
|
match shutdown_rx.recv() {
|
|
|
|
|
Ok(()) => {
|
|
|
|
|
info!("control message requesting shutdown");
|
|
|
|
|
controlled_shutdown.send(()).ok();
|
2023-01-22 10:49:49 -05:00
|
|
|
},
|
2022-09-06 07:12:07 -04:00
|
|
|
Err(std::sync::mpsc::RecvError) => {
|
2023-01-22 10:49:49 -05:00
|
|
|
trace!("shutdown requestor is disconnected (this is normal)");
|
2022-09-06 07:12:07 -04:00
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
});
|
|
|
|
|
// listen for ctrl-c interruupts
|
2022-09-06 06:56:04 -04:00
|
|
|
let ctrl_c_shutdown = invoke_shutdown.clone();
|
2022-09-11 13:44:45 -04:00
|
|
|
// listener for webserver shutdown
|
|
|
|
|
let webserver_shutdown_listen = invoke_shutdown.subscribe();
|
|
|
|
|
|
2022-09-06 06:56:04 -04:00
|
|
|
tokio::spawn(async move {
|
|
|
|
|
tokio::signal::ctrl_c().await.unwrap();
|
2022-09-06 07:12:07 -04:00
|
|
|
info!("shutting down due to SIGINT (main)");
|
2022-09-06 06:56:04 -04:00
|
|
|
ctrl_c_shutdown.send(()).ok();
|
|
|
|
|
});
|
2023-01-22 11:06:44 -05:00
|
|
|
// spawn a task to check the pool size.
|
|
|
|
|
//let pool_monitor = pool.clone();
|
|
|
|
|
//tokio::spawn(async move {db::monitor_pool("reader", pool_monitor).await;});
|
2022-12-25 11:43:47 -05:00
|
|
|
|
2022-09-06 06:56:04 -04:00
|
|
|
// A `Service` is needed for every connection, so this
|
|
|
|
|
// creates one from our `handle_request` function.
|
|
|
|
|
let make_svc = make_service_fn(|conn: &AddrStream| {
|
2023-01-22 11:06:44 -05:00
|
|
|
let repo = repo.clone();
|
2022-09-06 06:56:04 -04:00
|
|
|
let remote_addr = conn.remote_addr();
|
|
|
|
|
let bcast = bcast_tx.clone();
|
|
|
|
|
let event = event_tx.clone();
|
|
|
|
|
let stop = invoke_shutdown.clone();
|
2022-09-06 07:12:07 -04:00
|
|
|
let settings = settings.clone();
|
2023-01-22 12:08:12 -05:00
|
|
|
let registry = registry.clone();
|
|
|
|
|
let metrics = metrics.clone();
|
2022-09-06 06:56:04 -04:00
|
|
|
async move {
|
|
|
|
|
// service_fn converts our function into a `Service`
|
|
|
|
|
Ok::<_, Infallible>(service_fn(move |request: Request<Body>| {
|
|
|
|
|
handle_web_request(
|
|
|
|
|
request,
|
2023-01-22 11:06:44 -05:00
|
|
|
repo.clone(),
|
2022-09-06 07:12:07 -04:00
|
|
|
settings.clone(),
|
2022-09-06 06:56:04 -04:00
|
|
|
remote_addr,
|
|
|
|
|
bcast.clone(),
|
|
|
|
|
event.clone(),
|
|
|
|
|
stop.subscribe(),
|
2023-01-22 12:08:12 -05:00
|
|
|
registry.clone(),
|
|
|
|
|
metrics.clone(),
|
2022-09-06 06:56:04 -04:00
|
|
|
)
|
|
|
|
|
}))
|
|
|
|
|
}
|
|
|
|
|
});
|
|
|
|
|
let server = Server::bind(&socket_addr)
|
|
|
|
|
.serve(make_svc)
|
2022-09-11 13:44:45 -04:00
|
|
|
.with_graceful_shutdown(ctrl_c_or_signal(webserver_shutdown_listen));
|
|
|
|
|
// run hyper in this thread. This is why the thread does not return.
|
2022-09-06 06:56:04 -04:00
|
|
|
if let Err(e) = server.await {
|
|
|
|
|
eprintln!("server error: {}", e);
|
|
|
|
|
}
|
|
|
|
|
});
|
|
|
|
|
Ok(())
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/// Nostr protocol messages from a client
|
2022-09-24 09:30:22 -04:00
|
|
|
#[derive(Deserialize, Serialize, Clone, PartialEq, Eq, Debug)]
|
2022-09-06 06:56:04 -04:00
|
|
|
#[serde(untagged)]
|
|
|
|
|
pub enum NostrMessage {
|
|
|
|
|
/// An `EVENT` message
|
|
|
|
|
EventMsg(EventCmd),
|
|
|
|
|
/// A `REQ` message
|
|
|
|
|
SubMsg(Subscription),
|
|
|
|
|
/// A `CLOSE` message
|
|
|
|
|
CloseMsg(CloseCmd),
|
|
|
|
|
}
|
|
|
|
|
|
2023-01-22 10:49:49 -05:00
|
|
|
/// Convert Message to `NostrMessage`
|
|
|
|
|
fn convert_to_msg(msg: &str, max_bytes: Option<usize>) -> Result<NostrMessage> {
|
|
|
|
|
let parsed_res: Result<NostrMessage> = serde_json::from_str(msg).map_err(std::convert::Into::into);
|
2022-09-06 06:56:04 -04:00
|
|
|
match parsed_res {
|
|
|
|
|
Ok(m) => {
|
2023-01-22 11:06:44 -05:00
|
|
|
if let NostrMessage::SubMsg(_) = m {
|
|
|
|
|
// note; this only prints the first 16k of a REQ and then truncates.
|
|
|
|
|
trace!("REQ: {:?}",msg);
|
|
|
|
|
};
|
2022-09-06 06:56:04 -04:00
|
|
|
if let NostrMessage::EventMsg(_) = m {
|
2022-09-06 07:12:07 -04:00
|
|
|
if let Some(max_size) = max_bytes {
|
2022-09-06 06:56:04 -04:00
|
|
|
// check length, ensure that some max size is set.
|
|
|
|
|
if msg.len() > max_size && max_size > 0 {
|
|
|
|
|
return Err(Error::EventMaxLengthError(msg.len()));
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
Ok(m)
|
|
|
|
|
}
|
|
|
|
|
Err(e) => {
|
2023-01-10 08:41:49 -05:00
|
|
|
trace!("proto parse error: {:?}", e);
|
|
|
|
|
trace!("parse error on message: {:?}", msg.trim());
|
2022-09-06 06:56:04 -04:00
|
|
|
Err(Error::ProtoParseError)
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2023-01-22 10:49:49 -05:00
|
|
|
/// Turn a string into a NOTICE message ready to send over a `WebSocket`
|
|
|
|
|
fn make_notice_message(notice: &Notice) -> Message {
|
2022-11-10 17:27:10 -05:00
|
|
|
let json = match notice {
|
|
|
|
|
Notice::Message(ref msg) => json!(["NOTICE", msg]),
|
|
|
|
|
Notice::EventResult(ref res) => json!(["OK", res.id, res.status.to_bool(), res.msg]),
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
Message::text(json.to_string())
|
2022-09-06 06:56:04 -04:00
|
|
|
}
|
|
|
|
|
|
2022-11-05 11:29:25 -04:00
|
|
|
struct ClientInfo {
|
|
|
|
|
remote_ip: String,
|
|
|
|
|
user_agent: Option<String>,
|
2022-12-22 17:55:53 -05:00
|
|
|
origin: Option<String>,
|
2022-11-05 11:29:25 -04:00
|
|
|
}
|
|
|
|
|
|
2022-09-06 06:56:04 -04:00
|
|
|
/// Handle new client connections. This runs through an event loop
|
|
|
|
|
/// for all client communication.
|
|
|
|
|
async fn nostr_server(
|
2023-01-22 10:49:49 -05:00
|
|
|
repo: Arc<dyn NostrRepo>,
|
2022-11-05 11:29:25 -04:00
|
|
|
client_info: ClientInfo,
|
2022-09-06 07:12:07 -04:00
|
|
|
settings: Settings,
|
2022-09-06 06:56:04 -04:00
|
|
|
mut ws_stream: WebSocketStream<Upgraded>,
|
|
|
|
|
broadcast: Sender<Event>,
|
|
|
|
|
event_tx: mpsc::Sender<SubmittedEvent>,
|
|
|
|
|
mut shutdown: Receiver<()>,
|
2023-01-22 12:08:12 -05:00
|
|
|
metrics: NostrMetrics,
|
2022-09-06 06:56:04 -04:00
|
|
|
) {
|
2022-12-16 18:01:49 -05:00
|
|
|
// the time this websocket nostr server started
|
|
|
|
|
let orig_start = Instant::now();
|
2022-09-06 06:56:04 -04:00
|
|
|
// get a broadcast channel for clients to communicate on
|
|
|
|
|
let mut bcast_rx = broadcast.subscribe();
|
|
|
|
|
// Track internal client state
|
2022-11-05 11:29:25 -04:00
|
|
|
let mut conn = conn::ClientConn::new(client_info.remote_ip);
|
2022-12-17 10:27:29 -05:00
|
|
|
// subscription creation rate limiting
|
|
|
|
|
let mut sub_lim_opt = None;
|
|
|
|
|
// 100ms jitter when the rate limiter returns
|
|
|
|
|
let jitter = Jitter::up_to(Duration::from_millis(100));
|
|
|
|
|
let sub_per_min_setting = settings.limits.subscriptions_per_min;
|
|
|
|
|
if let Some(sub_per_min) = sub_per_min_setting {
|
|
|
|
|
if sub_per_min > 0 {
|
|
|
|
|
trace!("Rate limits for sub creation ({}/min)", sub_per_min);
|
|
|
|
|
let quota_time = core::num::NonZeroU32::new(sub_per_min).unwrap();
|
|
|
|
|
let quota = Quota::per_minute(quota_time);
|
|
|
|
|
sub_lim_opt = Some(RateLimiter::direct(quota));
|
|
|
|
|
}
|
|
|
|
|
}
|
2022-11-02 19:33:44 -04:00
|
|
|
// Use the remote IP as the client identifier
|
2022-09-06 06:56:04 -04:00
|
|
|
let cid = conn.get_client_prefix();
|
|
|
|
|
// Create a channel for receiving query results from the database.
|
|
|
|
|
// we will send out the tx handle to any query we generate.
|
2022-12-18 14:44:28 -05:00
|
|
|
// this has capacity for some of the larger requests we see, which
|
|
|
|
|
// should allow the DB thread to release the handle earlier.
|
|
|
|
|
let (query_tx, mut query_rx) = mpsc::channel::<db::QueryResult>(20000);
|
2022-09-06 06:56:04 -04:00
|
|
|
// Create channel for receiving NOTICEs
|
2022-12-18 14:44:28 -05:00
|
|
|
let (notice_tx, mut notice_rx) = mpsc::channel::<Notice>(128);
|
2022-09-06 06:56:04 -04:00
|
|
|
|
|
|
|
|
// last time this client sent data (message, ping, etc.)
|
|
|
|
|
let mut last_message_time = Instant::now();
|
|
|
|
|
|
|
|
|
|
// ping interval (every 5 minutes)
|
2022-11-05 08:42:08 -04:00
|
|
|
let default_ping_dur = Duration::from_secs(settings.network.ping_interval_seconds.into());
|
2022-09-06 06:56:04 -04:00
|
|
|
|
|
|
|
|
// disconnect after 20 minutes without a ping response or event.
|
|
|
|
|
let max_quiet_time = Duration::from_secs(60 * 20);
|
|
|
|
|
|
|
|
|
|
let start = tokio::time::Instant::now() + default_ping_dur;
|
|
|
|
|
let mut ping_interval = tokio::time::interval_at(start, default_ping_dur);
|
|
|
|
|
|
|
|
|
|
// maintain a hashmap of a oneshot channel for active subscriptions.
|
|
|
|
|
// when these subscriptions are cancelled, make a message
|
|
|
|
|
// available to the executing query so it knows to stop.
|
|
|
|
|
let mut running_queries: HashMap<String, oneshot::Sender<()>> = HashMap::new();
|
|
|
|
|
// for stats, keep track of how many events the client published,
|
|
|
|
|
// and how many it received from queries.
|
|
|
|
|
let mut client_published_event_count: usize = 0;
|
|
|
|
|
let mut client_received_event_count: usize = 0;
|
2022-12-16 16:22:27 -05:00
|
|
|
debug!("new client connection (cid: {}, ip: {:?})", cid, conn.ip());
|
2022-12-24 11:29:47 -05:00
|
|
|
let origin = client_info.origin.unwrap_or_else(|| "<unspecified>".into());
|
|
|
|
|
let user_agent = client_info
|
|
|
|
|
.user_agent
|
|
|
|
|
.unwrap_or_else(|| "<unspecified>".into());
|
2022-12-22 17:55:53 -05:00
|
|
|
debug!(
|
|
|
|
|
"cid: {}, origin: {:?}, user-agent: {:?}",
|
|
|
|
|
cid, origin, user_agent
|
|
|
|
|
);
|
2023-01-22 12:08:12 -05:00
|
|
|
|
2023-01-28 16:46:26 -05:00
|
|
|
// Measure connections
|
|
|
|
|
metrics.connections.inc();
|
2023-01-22 12:08:12 -05:00
|
|
|
|
2022-09-06 06:56:04 -04:00
|
|
|
loop {
|
|
|
|
|
tokio::select! {
|
|
|
|
|
_ = shutdown.recv() => {
|
2023-01-22 11:06:44 -05:00
|
|
|
info!("Close connection down due to shutdown, client: {}, ip: {:?}, connected: {:?}", cid, conn.ip(), orig_start.elapsed());
|
2022-09-06 06:56:04 -04:00
|
|
|
// server shutting down, exit loop
|
|
|
|
|
break;
|
|
|
|
|
},
|
|
|
|
|
_ = ping_interval.tick() => {
|
|
|
|
|
// check how long since we talked to client
|
|
|
|
|
// if it has been too long, disconnect
|
|
|
|
|
if last_message_time.elapsed() > max_quiet_time {
|
|
|
|
|
debug!("ending connection due to lack of client ping response");
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
// Send a ping
|
|
|
|
|
ws_stream.send(Message::Ping(Vec::new())).await.ok();
|
|
|
|
|
},
|
|
|
|
|
Some(notice_msg) = notice_rx.recv() => {
|
2023-01-22 10:49:49 -05:00
|
|
|
ws_stream.send(make_notice_message(¬ice_msg)).await.ok();
|
2022-09-06 06:56:04 -04:00
|
|
|
},
|
|
|
|
|
Some(query_result) = query_rx.recv() => {
|
|
|
|
|
// database informed us of a query result we asked for
|
|
|
|
|
let subesc = query_result.sub_id.replace('"', "");
|
|
|
|
|
if query_result.event == "EOSE" {
|
|
|
|
|
let send_str = format!("[\"EOSE\",\"{}\"]", subesc);
|
|
|
|
|
ws_stream.send(Message::Text(send_str)).await.ok();
|
|
|
|
|
} else {
|
|
|
|
|
client_received_event_count += 1;
|
|
|
|
|
// send a result
|
|
|
|
|
let send_str = format!("[\"EVENT\",\"{}\",{}]", subesc, &query_result.event);
|
|
|
|
|
ws_stream.send(Message::Text(send_str)).await.ok();
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
// TODO: consider logging the LaggedRecv error
|
|
|
|
|
Ok(global_event) = bcast_rx.recv() => {
|
|
|
|
|
// an event has been broadcast to all clients
|
|
|
|
|
// first check if there is a subscription for this event.
|
2022-11-08 21:02:27 -05:00
|
|
|
for (s, sub) in conn.subscriptions() {
|
|
|
|
|
if !sub.interested_in_event(&global_event) {
|
|
|
|
|
continue;
|
|
|
|
|
}
|
2022-09-06 06:56:04 -04:00
|
|
|
// TODO: serialize at broadcast time, instead of
|
|
|
|
|
// once for each consumer.
|
|
|
|
|
if let Ok(event_str) = serde_json::to_string(&global_event) {
|
2022-12-22 11:29:27 -05:00
|
|
|
trace!("sub match for client: {}, sub: {:?}, event: {:?}",
|
2022-09-06 06:56:04 -04:00
|
|
|
cid, s,
|
|
|
|
|
global_event.get_event_id_prefix());
|
|
|
|
|
// create an event response and send it
|
|
|
|
|
let subesc = s.replace('"', "");
|
|
|
|
|
ws_stream.send(Message::Text(format!("[\"EVENT\",\"{}\",{}]", subesc, event_str))).await.ok();
|
|
|
|
|
} else {
|
2022-09-11 11:22:01 -04:00
|
|
|
warn!("could not serialize event: {:?}", global_event.get_event_id_prefix());
|
2022-09-06 06:56:04 -04:00
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
ws_next = ws_stream.next() => {
|
|
|
|
|
// update most recent message time for client
|
|
|
|
|
last_message_time = Instant::now();
|
|
|
|
|
// Consume text messages from the client, parse into Nostr messages.
|
|
|
|
|
let nostr_msg = match ws_next {
|
|
|
|
|
Some(Ok(Message::Text(m))) => {
|
2023-01-22 10:49:49 -05:00
|
|
|
convert_to_msg(&m,settings.limits.max_event_bytes)
|
2022-09-06 06:56:04 -04:00
|
|
|
},
|
2023-01-22 11:06:44 -05:00
|
|
|
Some(Ok(Message::Binary(_))) => {
|
|
|
|
|
ws_stream.send(
|
|
|
|
|
make_notice_message(&Notice::message("binary messages are not accepted".into()))).await.ok();
|
2022-09-06 06:56:04 -04:00
|
|
|
continue;
|
|
|
|
|
},
|
2022-09-24 10:01:09 -04:00
|
|
|
Some(Ok(Message::Ping(_) | Message::Pong(_))) => {
|
2022-09-06 06:56:04 -04:00
|
|
|
// get a ping/pong, ignore. tungstenite will
|
|
|
|
|
// send responses automatically.
|
|
|
|
|
continue;
|
|
|
|
|
},
|
2023-01-22 11:06:44 -05:00
|
|
|
Some(Err(WsError::Capacity(MessageTooLong{size, max_size}))) => {
|
|
|
|
|
ws_stream.send(
|
|
|
|
|
make_notice_message(&Notice::message(format!("message too large ({} > {})",size, max_size)))).await.ok();
|
2022-09-06 06:56:04 -04:00
|
|
|
continue;
|
2023-01-22 11:06:44 -05:00
|
|
|
},
|
2022-09-06 06:56:04 -04:00
|
|
|
None |
|
2023-01-22 11:06:44 -05:00
|
|
|
Some(Ok(Message::Close(_)) |
|
|
|
|
|
Err(WsError::AlreadyClosed | WsError::ConnectionClosed |
|
|
|
|
|
WsError::Protocol(tungstenite::error::ProtocolError::ResetWithoutClosingHandshake)))
|
2022-09-06 06:56:04 -04:00
|
|
|
=> {
|
2022-12-16 16:22:27 -05:00
|
|
|
debug!("websocket close from client (cid: {}, ip: {:?})",cid, conn.ip());
|
2023-01-22 11:06:44 -05:00
|
|
|
break;
|
|
|
|
|
},
|
2022-09-06 06:56:04 -04:00
|
|
|
Some(Err(WsError::Io(e))) => {
|
|
|
|
|
// IO errors are considered fatal
|
2022-12-16 16:22:27 -05:00
|
|
|
warn!("IO error (cid: {}, ip: {:?}): {:?}", cid, conn.ip(), e);
|
2022-09-06 06:56:04 -04:00
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
x => {
|
|
|
|
|
// default condition on error is to close the client connection
|
2022-12-16 16:22:27 -05:00
|
|
|
info!("unknown error (cid: {}, ip: {:?}): {:?} (closing conn)", cid, conn.ip(), x);
|
2022-09-06 06:56:04 -04:00
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
// convert ws_next into proto_next
|
|
|
|
|
match nostr_msg {
|
|
|
|
|
Ok(NostrMessage::EventMsg(ec)) => {
|
|
|
|
|
// An EventCmd needs to be validated to be converted into an Event
|
|
|
|
|
// handle each type of message
|
2022-11-11 10:20:36 -05:00
|
|
|
let evid = ec.event_id().to_owned();
|
2022-09-06 06:56:04 -04:00
|
|
|
let parsed : Result<Event> = Result::<Event>::from(ec);
|
|
|
|
|
match parsed {
|
|
|
|
|
Ok(e) => {
|
|
|
|
|
let id_prefix:String = e.id.chars().take(8).collect();
|
2022-12-16 16:22:27 -05:00
|
|
|
debug!("successfully parsed/validated event: {:?} (cid: {})", id_prefix, cid);
|
2022-09-06 07:12:07 -04:00
|
|
|
// check if the event is too far in the future.
|
|
|
|
|
if e.is_valid_timestamp(settings.options.reject_future_seconds) {
|
|
|
|
|
// Write this to the database.
|
|
|
|
|
let submit_event = SubmittedEvent { event: e.clone(), notice_tx: notice_tx.clone() };
|
|
|
|
|
event_tx.send(submit_event).await.ok();
|
|
|
|
|
client_published_event_count += 1;
|
2023-01-22 11:06:44 -05:00
|
|
|
} else {
|
|
|
|
|
info!("client: {} sent a far future-dated event", cid);
|
|
|
|
|
if let Some(fut_sec) = settings.options.reject_future_seconds {
|
|
|
|
|
let msg = format!("The event created_at field is out of the acceptable range (+{}sec) for this relay.",fut_sec);
|
|
|
|
|
let notice = Notice::invalid(e.id, &msg);
|
|
|
|
|
ws_stream.send(make_notice_message(¬ice)).await.ok();
|
|
|
|
|
}
|
|
|
|
|
}
|
2022-09-06 06:56:04 -04:00
|
|
|
},
|
2022-11-11 10:20:36 -05:00
|
|
|
Err(e) => {
|
2022-12-16 16:22:27 -05:00
|
|
|
info!("client sent an invalid event (cid: {})", cid);
|
2023-01-22 10:49:49 -05:00
|
|
|
ws_stream.send(make_notice_message(&Notice::invalid(evid, &format!("{}", e)))).await.ok();
|
2022-09-06 06:56:04 -04:00
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
Ok(NostrMessage::SubMsg(s)) => {
|
2022-12-16 16:22:27 -05:00
|
|
|
debug!("subscription requested (cid: {}, sub: {:?})", cid, s.id);
|
2022-09-06 06:56:04 -04:00
|
|
|
// subscription handling consists of:
|
2022-12-17 10:27:29 -05:00
|
|
|
// * check for rate limits
|
2022-09-06 06:56:04 -04:00
|
|
|
// * registering the subscription so future events can be matched
|
|
|
|
|
// * making a channel to cancel to request later
|
|
|
|
|
// * sending a request for a SQL query
|
2023-01-22 11:06:44 -05:00
|
|
|
// Do nothing if the sub already exists.
|
|
|
|
|
if conn.has_subscription(&s) {
|
|
|
|
|
info!("client sent duplicate subscription, ignoring (cid: {}, sub: {:?})", cid, s.id);
|
|
|
|
|
} else {
|
|
|
|
|
if let Some(ref lim) = sub_lim_opt {
|
|
|
|
|
lim.until_ready_with_jitter(jitter).await;
|
|
|
|
|
}
|
2022-12-16 15:37:02 -05:00
|
|
|
let (abandon_query_tx, abandon_query_rx) = oneshot::channel::<()>();
|
|
|
|
|
match conn.subscribe(s.clone()) {
|
2023-01-22 11:06:44 -05:00
|
|
|
Ok(()) => {
|
2022-12-16 15:37:02 -05:00
|
|
|
// when we insert, if there was a previous query running with the same name, cancel it.
|
2023-01-22 10:49:49 -05:00
|
|
|
if let Some(previous_query) = running_queries.insert(s.id.clone(), abandon_query_tx) {
|
2023-01-22 11:06:44 -05:00
|
|
|
previous_query.send(()).ok();
|
|
|
|
|
}
|
|
|
|
|
if s.needs_historical_events() {
|
|
|
|
|
// start a database query. this spawns a blocking database query on a worker thread.
|
|
|
|
|
repo.query_subscription(s, cid.clone(), query_tx.clone(), abandon_query_rx).await.ok();
|
2022-12-16 15:37:02 -05:00
|
|
|
}
|
2023-01-22 11:06:44 -05:00
|
|
|
},
|
|
|
|
|
Err(e) => {
|
|
|
|
|
info!("Subscription error: {} (cid: {}, sub: {:?})", e, cid, s.id);
|
2023-01-22 10:49:49 -05:00
|
|
|
ws_stream.send(make_notice_message(&Notice::message(format!("Subscription error: {}", e)))).await.ok();
|
2023-01-22 11:06:44 -05:00
|
|
|
}
|
2022-09-06 06:56:04 -04:00
|
|
|
}
|
2023-01-22 11:06:44 -05:00
|
|
|
}
|
2022-09-06 06:56:04 -04:00
|
|
|
},
|
|
|
|
|
Ok(NostrMessage::CloseMsg(cc)) => {
|
|
|
|
|
// closing a request simply removes the subscription.
|
|
|
|
|
let parsed : Result<Close> = Result::<Close>::from(cc);
|
2023-01-22 11:06:44 -05:00
|
|
|
if let Ok(c) = parsed {
|
|
|
|
|
// check if a query is currently
|
|
|
|
|
// running, and remove it if so.
|
|
|
|
|
let stop_tx = running_queries.remove(&c.id);
|
|
|
|
|
if let Some(tx) = stop_tx {
|
|
|
|
|
tx.send(()).ok();
|
2022-09-06 06:56:04 -04:00
|
|
|
}
|
2023-01-22 11:06:44 -05:00
|
|
|
// stop checking new events against
|
|
|
|
|
// the subscription
|
|
|
|
|
conn.unsubscribe(&c);
|
|
|
|
|
} else {
|
|
|
|
|
info!("invalid command ignored");
|
|
|
|
|
ws_stream.send(make_notice_message(&Notice::message("could not parse command".into()))).await.ok();
|
|
|
|
|
}
|
2022-09-06 06:56:04 -04:00
|
|
|
},
|
|
|
|
|
Err(Error::ConnError) => {
|
2022-12-16 16:22:27 -05:00
|
|
|
debug!("got connection close/error, disconnecting cid: {}, ip: {:?}",cid, conn.ip());
|
2022-09-06 06:56:04 -04:00
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
Err(Error::EventMaxLengthError(s)) => {
|
2022-12-16 16:22:27 -05:00
|
|
|
info!("client sent event larger ({} bytes) than max size (cid: {})", s, cid);
|
2023-01-22 10:49:49 -05:00
|
|
|
ws_stream.send(make_notice_message(&Notice::message("event exceeded max size".into()))).await.ok();
|
2022-09-06 06:56:04 -04:00
|
|
|
},
|
|
|
|
|
Err(Error::ProtoParseError) => {
|
2022-12-16 16:22:27 -05:00
|
|
|
info!("client sent event that could not be parsed (cid: {})", cid);
|
2023-01-22 10:49:49 -05:00
|
|
|
ws_stream.send(make_notice_message(&Notice::message("could not parse command".into()))).await.ok();
|
2022-09-06 06:56:04 -04:00
|
|
|
},
|
|
|
|
|
Err(e) => {
|
2022-12-16 16:22:27 -05:00
|
|
|
info!("got non-fatal error from client (cid: {}, error: {:?}", cid, e);
|
2022-09-06 06:56:04 -04:00
|
|
|
},
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
// connection cleanup - ensure any still running queries are terminated.
|
2022-09-24 20:28:02 -04:00
|
|
|
for (_, stop_tx) in running_queries {
|
2022-09-06 06:56:04 -04:00
|
|
|
stop_tx.send(()).ok();
|
|
|
|
|
}
|
|
|
|
|
info!(
|
2022-12-16 18:01:49 -05:00
|
|
|
"stopping client connection (cid: {}, ip: {:?}, sent: {} events, recv: {} events, connected: {:?})",
|
2022-11-02 19:33:44 -04:00
|
|
|
cid,
|
|
|
|
|
conn.ip(),
|
|
|
|
|
client_published_event_count,
|
2022-12-16 18:01:49 -05:00
|
|
|
client_received_event_count,
|
2023-01-22 11:06:44 -05:00
|
|
|
orig_start.elapsed()
|
2022-09-06 06:56:04 -04:00
|
|
|
);
|
|
|
|
|
}
|
2023-01-22 12:08:12 -05:00
|
|
|
|
|
|
|
|
#[derive(Clone)]
|
|
|
|
|
pub struct NostrMetrics {
|
|
|
|
|
pub query_sub: Histogram,
|
|
|
|
|
pub write_events: Histogram,
|
2023-01-28 18:09:21 -05:00
|
|
|
pub sent_events: IntCounter,
|
2023-01-28 16:46:26 -05:00
|
|
|
pub connections: IntCounter,
|
2023-01-28 17:05:58 -05:00
|
|
|
pub query_aborts: IntCounter,
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}
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