Line data Source code
1 : use std::io;
2 : use std::sync::Arc;
3 : use std::time::Duration;
4 :
5 : use async_trait::async_trait;
6 : use hyper_util::rt::{TokioExecutor, TokioIo, TokioTimer};
7 : use p256::ecdsa::SigningKey;
8 : use p256::elliptic_curve::JwkEcKey;
9 : use rand::rngs::OsRng;
10 : use tokio::net::{lookup_host, TcpStream};
11 : use tracing::field::display;
12 : use tracing::{debug, info};
13 :
14 : use super::conn_pool::poll_client;
15 : use super::conn_pool_lib::{Client, ConnInfo, GlobalConnPool};
16 : use super::http_conn_pool::{self, poll_http2_client, Send};
17 : use super::local_conn_pool::{self, LocalClient, LocalConnPool, EXT_NAME, EXT_SCHEMA, EXT_VERSION};
18 : use crate::auth::backend::local::StaticAuthRules;
19 : use crate::auth::backend::{ComputeCredentials, ComputeUserInfo};
20 : use crate::auth::{self, check_peer_addr_is_in_list, AuthError};
21 : use crate::compute_ctl::{
22 : ComputeCtlError, ExtensionInstallRequest, Privilege, SetRoleGrantsRequest,
23 : };
24 : use crate::config::ProxyConfig;
25 : use crate::context::RequestMonitoring;
26 : use crate::control_plane::errors::{GetAuthInfoError, WakeComputeError};
27 : use crate::control_plane::locks::ApiLocks;
28 : use crate::control_plane::provider::ApiLockError;
29 : use crate::control_plane::CachedNodeInfo;
30 : use crate::error::{ErrorKind, ReportableError, UserFacingError};
31 : use crate::intern::EndpointIdInt;
32 : use crate::proxy::connect_compute::ConnectMechanism;
33 : use crate::proxy::retry::{CouldRetry, ShouldRetryWakeCompute};
34 : use crate::rate_limiter::EndpointRateLimiter;
35 : use crate::{compute, EndpointId, Host};
36 :
37 : pub(crate) struct PoolingBackend {
38 : pub(crate) http_conn_pool: Arc<super::http_conn_pool::GlobalConnPool<Send>>,
39 : pub(crate) local_pool: Arc<LocalConnPool<tokio_postgres::Client>>,
40 : pub(crate) pool: Arc<GlobalConnPool<tokio_postgres::Client>>,
41 :
42 : pub(crate) config: &'static ProxyConfig,
43 : pub(crate) auth_backend: &'static crate::auth::Backend<'static, ()>,
44 : pub(crate) endpoint_rate_limiter: Arc<EndpointRateLimiter>,
45 : }
46 :
47 : impl PoolingBackend {
48 0 : pub(crate) async fn authenticate_with_password(
49 0 : &self,
50 0 : ctx: &RequestMonitoring,
51 0 : user_info: &ComputeUserInfo,
52 0 : password: &[u8],
53 0 : ) -> Result<ComputeCredentials, AuthError> {
54 0 : let user_info = user_info.clone();
55 0 : let backend = self.auth_backend.as_ref().map(|()| user_info.clone());
56 0 : let (allowed_ips, maybe_secret) = backend.get_allowed_ips_and_secret(ctx).await?;
57 0 : if self.config.authentication_config.ip_allowlist_check_enabled
58 0 : && !check_peer_addr_is_in_list(&ctx.peer_addr(), &allowed_ips)
59 : {
60 0 : return Err(AuthError::ip_address_not_allowed(ctx.peer_addr()));
61 0 : }
62 0 : if !self
63 0 : .endpoint_rate_limiter
64 0 : .check(user_info.endpoint.clone().into(), 1)
65 : {
66 0 : return Err(AuthError::too_many_connections());
67 0 : }
68 0 : let cached_secret = match maybe_secret {
69 0 : Some(secret) => secret,
70 0 : None => backend.get_role_secret(ctx).await?,
71 : };
72 :
73 0 : let secret = match cached_secret.value.clone() {
74 0 : Some(secret) => self.config.authentication_config.check_rate_limit(
75 0 : ctx,
76 0 : secret,
77 0 : &user_info.endpoint,
78 0 : true,
79 0 : )?,
80 : None => {
81 : // If we don't have an authentication secret, for the http flow we can just return an error.
82 0 : info!("authentication info not found");
83 0 : return Err(AuthError::auth_failed(&*user_info.user));
84 : }
85 : };
86 0 : let ep = EndpointIdInt::from(&user_info.endpoint);
87 0 : let auth_outcome = crate::auth::validate_password_and_exchange(
88 0 : &self.config.authentication_config.thread_pool,
89 0 : ep,
90 0 : password,
91 0 : secret,
92 0 : )
93 0 : .await?;
94 0 : let res = match auth_outcome {
95 0 : crate::sasl::Outcome::Success(key) => {
96 0 : info!("user successfully authenticated");
97 0 : Ok(key)
98 : }
99 0 : crate::sasl::Outcome::Failure(reason) => {
100 0 : info!("auth backend failed with an error: {reason}");
101 0 : Err(AuthError::auth_failed(&*user_info.user))
102 : }
103 : };
104 0 : res.map(|key| ComputeCredentials {
105 0 : info: user_info,
106 0 : keys: key,
107 0 : })
108 0 : }
109 :
110 0 : pub(crate) async fn authenticate_with_jwt(
111 0 : &self,
112 0 : ctx: &RequestMonitoring,
113 0 : user_info: &ComputeUserInfo,
114 0 : jwt: String,
115 0 : ) -> Result<ComputeCredentials, AuthError> {
116 0 : match &self.auth_backend {
117 0 : crate::auth::Backend::ControlPlane(console, ()) => {
118 0 : self.config
119 0 : .authentication_config
120 0 : .jwks_cache
121 0 : .check_jwt(
122 0 : ctx,
123 0 : user_info.endpoint.clone(),
124 0 : &user_info.user,
125 0 : &**console,
126 0 : &jwt,
127 0 : )
128 0 : .await
129 0 : .map_err(|e| AuthError::auth_failed(e.to_string()))?;
130 :
131 0 : Ok(ComputeCredentials {
132 0 : info: user_info.clone(),
133 0 : keys: crate::auth::backend::ComputeCredentialKeys::None,
134 0 : })
135 : }
136 : crate::auth::Backend::Local(_) => {
137 0 : let keys = self
138 0 : .config
139 0 : .authentication_config
140 0 : .jwks_cache
141 0 : .check_jwt(
142 0 : ctx,
143 0 : user_info.endpoint.clone(),
144 0 : &user_info.user,
145 0 : &StaticAuthRules,
146 0 : &jwt,
147 0 : )
148 0 : .await
149 0 : .map_err(|e| AuthError::auth_failed(e.to_string()))?;
150 :
151 0 : Ok(ComputeCredentials {
152 0 : info: user_info.clone(),
153 0 : keys,
154 0 : })
155 : }
156 : }
157 0 : }
158 :
159 : // Wake up the destination if needed. Code here is a bit involved because
160 : // we reuse the code from the usual proxy and we need to prepare few structures
161 : // that this code expects.
162 0 : #[tracing::instrument(fields(pid = tracing::field::Empty), skip_all)]
163 : pub(crate) async fn connect_to_compute(
164 : &self,
165 : ctx: &RequestMonitoring,
166 : conn_info: ConnInfo,
167 : keys: ComputeCredentials,
168 : force_new: bool,
169 : ) -> Result<Client<tokio_postgres::Client>, HttpConnError> {
170 : let maybe_client = if force_new {
171 : info!("pool: pool is disabled");
172 : None
173 : } else {
174 : info!("pool: looking for an existing connection");
175 : self.pool.get(ctx, &conn_info)?
176 : };
177 :
178 : if let Some(client) = maybe_client {
179 : return Ok(client);
180 : }
181 : let conn_id = uuid::Uuid::new_v4();
182 : tracing::Span::current().record("conn_id", display(conn_id));
183 : info!(%conn_id, "pool: opening a new connection '{conn_info}'");
184 0 : let backend = self.auth_backend.as_ref().map(|()| keys);
185 : crate::proxy::connect_compute::connect_to_compute(
186 : ctx,
187 : &TokioMechanism {
188 : conn_id,
189 : conn_info,
190 : pool: self.pool.clone(),
191 : locks: &self.config.connect_compute_locks,
192 : },
193 : &backend,
194 : false, // do not allow self signed compute for http flow
195 : self.config.wake_compute_retry_config,
196 : self.config.connect_to_compute_retry_config,
197 : )
198 : .await
199 : }
200 :
201 : // Wake up the destination if needed
202 0 : #[tracing::instrument(fields(pid = tracing::field::Empty), skip_all)]
203 : pub(crate) async fn connect_to_local_proxy(
204 : &self,
205 : ctx: &RequestMonitoring,
206 : conn_info: ConnInfo,
207 : ) -> Result<http_conn_pool::Client<Send>, HttpConnError> {
208 : info!("pool: looking for an existing connection");
209 : if let Some(client) = self.http_conn_pool.get(ctx, &conn_info) {
210 : return Ok(client);
211 : }
212 :
213 : let conn_id = uuid::Uuid::new_v4();
214 : tracing::Span::current().record("conn_id", display(conn_id));
215 : info!(%conn_id, "pool: opening a new connection '{conn_info}'");
216 0 : let backend = self.auth_backend.as_ref().map(|()| ComputeCredentials {
217 0 : info: ComputeUserInfo {
218 0 : user: conn_info.user_info.user.clone(),
219 0 : endpoint: EndpointId::from(format!("{}-local-proxy", conn_info.user_info.endpoint)),
220 0 : options: conn_info.user_info.options.clone(),
221 0 : },
222 0 : keys: crate::auth::backend::ComputeCredentialKeys::None,
223 0 : });
224 : crate::proxy::connect_compute::connect_to_compute(
225 : ctx,
226 : &HyperMechanism {
227 : conn_id,
228 : conn_info,
229 : pool: self.http_conn_pool.clone(),
230 : locks: &self.config.connect_compute_locks,
231 : },
232 : &backend,
233 : false, // do not allow self signed compute for http flow
234 : self.config.wake_compute_retry_config,
235 : self.config.connect_to_compute_retry_config,
236 : )
237 : .await
238 : }
239 :
240 : /// Connect to postgres over localhost.
241 : ///
242 : /// We expect postgres to be started here, so we won't do any retries.
243 : ///
244 : /// # Panics
245 : ///
246 : /// Panics if called with a non-local_proxy backend.
247 0 : #[tracing::instrument(fields(pid = tracing::field::Empty), skip_all)]
248 : pub(crate) async fn connect_to_local_postgres(
249 : &self,
250 : ctx: &RequestMonitoring,
251 : conn_info: ConnInfo,
252 : ) -> Result<LocalClient<tokio_postgres::Client>, HttpConnError> {
253 : if let Some(client) = self.local_pool.get(ctx, &conn_info)? {
254 : return Ok(client);
255 : }
256 :
257 : let local_backend = match &self.auth_backend {
258 : auth::Backend::ControlPlane(_, ()) => {
259 : unreachable!("only local_proxy can connect to local postgres")
260 : }
261 : auth::Backend::Local(local) => local,
262 : };
263 :
264 : if !self.local_pool.initialized(&conn_info) {
265 : // only install and grant usage one at a time.
266 : let _permit = local_backend.initialize.acquire().await.unwrap();
267 :
268 : // check again for race
269 : if !self.local_pool.initialized(&conn_info) {
270 : local_backend
271 : .compute_ctl
272 : .install_extension(&ExtensionInstallRequest {
273 : extension: EXT_NAME,
274 : database: conn_info.dbname.clone(),
275 : version: EXT_VERSION,
276 : })
277 : .await?;
278 :
279 : local_backend
280 : .compute_ctl
281 : .grant_role(&SetRoleGrantsRequest {
282 : schema: EXT_SCHEMA,
283 : privileges: vec![Privilege::Usage],
284 : database: conn_info.dbname.clone(),
285 : role: conn_info.user_info.user.clone(),
286 : })
287 : .await?;
288 :
289 : self.local_pool.set_initialized(&conn_info);
290 : }
291 : }
292 :
293 : let conn_id = uuid::Uuid::new_v4();
294 : tracing::Span::current().record("conn_id", display(conn_id));
295 : info!(%conn_id, "local_pool: opening a new connection '{conn_info}'");
296 :
297 : let mut node_info = local_backend.node_info.clone();
298 :
299 : let (key, jwk) = create_random_jwk();
300 :
301 : let config = node_info
302 : .config
303 : .user(&conn_info.user_info.user)
304 : .dbname(&conn_info.dbname)
305 : .options(&format!(
306 : "-c pg_session_jwt.jwk={}",
307 : serde_json::to_string(&jwk).expect("serializing jwk to json should not fail")
308 : ));
309 :
310 : let pause = ctx.latency_timer_pause(crate::metrics::Waiting::Compute);
311 : let (client, connection) = config.connect(tokio_postgres::NoTls).await?;
312 : drop(pause);
313 :
314 : let pid = client.get_process_id();
315 : tracing::Span::current().record("pid", pid);
316 :
317 : let mut handle = local_conn_pool::poll_client(
318 : self.local_pool.clone(),
319 : ctx,
320 : conn_info,
321 : client,
322 : connection,
323 : key,
324 : conn_id,
325 : node_info.aux.clone(),
326 : );
327 :
328 : {
329 : let (client, mut discard) = handle.inner();
330 : debug!("setting up backend session state");
331 :
332 : // initiates the auth session
333 : if let Err(e) = client.query("select auth.init()", &[]).await {
334 : discard.discard();
335 : return Err(e.into());
336 : }
337 :
338 : info!("backend session state initialized");
339 : }
340 :
341 : Ok(handle)
342 : }
343 : }
344 :
345 0 : fn create_random_jwk() -> (SigningKey, JwkEcKey) {
346 0 : let key = SigningKey::random(&mut OsRng);
347 0 : let jwk = p256::PublicKey::from(key.verifying_key()).to_jwk();
348 0 : (key, jwk)
349 0 : }
350 :
351 0 : #[derive(Debug, thiserror::Error)]
352 : pub(crate) enum HttpConnError {
353 : #[error("pooled connection closed at inconsistent state")]
354 : ConnectionClosedAbruptly(#[from] tokio::sync::watch::error::SendError<uuid::Uuid>),
355 : #[error("could not connection to postgres in compute")]
356 : PostgresConnectionError(#[from] tokio_postgres::Error),
357 : #[error("could not connection to local-proxy in compute")]
358 : LocalProxyConnectionError(#[from] LocalProxyConnError),
359 : #[error("could not parse JWT payload")]
360 : JwtPayloadError(serde_json::Error),
361 :
362 : #[error("could not install extension: {0}")]
363 : ComputeCtl(#[from] ComputeCtlError),
364 : #[error("could not get auth info")]
365 : GetAuthInfo(#[from] GetAuthInfoError),
366 : #[error("user not authenticated")]
367 : AuthError(#[from] AuthError),
368 : #[error("wake_compute returned error")]
369 : WakeCompute(#[from] WakeComputeError),
370 : #[error("error acquiring resource permit: {0}")]
371 : TooManyConnectionAttempts(#[from] ApiLockError),
372 : }
373 :
374 0 : #[derive(Debug, thiserror::Error)]
375 : pub(crate) enum LocalProxyConnError {
376 : #[error("error with connection to local-proxy")]
377 : Io(#[source] std::io::Error),
378 : #[error("could not establish h2 connection")]
379 : H2(#[from] hyper::Error),
380 : }
381 :
382 : impl ReportableError for HttpConnError {
383 0 : fn get_error_kind(&self) -> ErrorKind {
384 0 : match self {
385 0 : HttpConnError::ConnectionClosedAbruptly(_) => ErrorKind::Compute,
386 0 : HttpConnError::PostgresConnectionError(p) => p.get_error_kind(),
387 0 : HttpConnError::LocalProxyConnectionError(_) => ErrorKind::Compute,
388 0 : HttpConnError::ComputeCtl(_) => ErrorKind::Service,
389 0 : HttpConnError::JwtPayloadError(_) => ErrorKind::User,
390 0 : HttpConnError::GetAuthInfo(a) => a.get_error_kind(),
391 0 : HttpConnError::AuthError(a) => a.get_error_kind(),
392 0 : HttpConnError::WakeCompute(w) => w.get_error_kind(),
393 0 : HttpConnError::TooManyConnectionAttempts(w) => w.get_error_kind(),
394 : }
395 0 : }
396 : }
397 :
398 : impl UserFacingError for HttpConnError {
399 0 : fn to_string_client(&self) -> String {
400 0 : match self {
401 0 : HttpConnError::ConnectionClosedAbruptly(_) => self.to_string(),
402 0 : HttpConnError::PostgresConnectionError(p) => p.to_string(),
403 0 : HttpConnError::LocalProxyConnectionError(p) => p.to_string(),
404 0 : HttpConnError::ComputeCtl(_) => "could not set up the JWT authorization database extension".to_string(),
405 0 : HttpConnError::JwtPayloadError(p) => p.to_string(),
406 0 : HttpConnError::GetAuthInfo(c) => c.to_string_client(),
407 0 : HttpConnError::AuthError(c) => c.to_string_client(),
408 0 : HttpConnError::WakeCompute(c) => c.to_string_client(),
409 : HttpConnError::TooManyConnectionAttempts(_) => {
410 0 : "Failed to acquire permit to connect to the database. Too many database connection attempts are currently ongoing.".to_owned()
411 : }
412 : }
413 0 : }
414 : }
415 :
416 : impl CouldRetry for HttpConnError {
417 0 : fn could_retry(&self) -> bool {
418 0 : match self {
419 0 : HttpConnError::PostgresConnectionError(e) => e.could_retry(),
420 0 : HttpConnError::LocalProxyConnectionError(e) => e.could_retry(),
421 0 : HttpConnError::ComputeCtl(_) => false,
422 0 : HttpConnError::ConnectionClosedAbruptly(_) => false,
423 0 : HttpConnError::JwtPayloadError(_) => false,
424 0 : HttpConnError::GetAuthInfo(_) => false,
425 0 : HttpConnError::AuthError(_) => false,
426 0 : HttpConnError::WakeCompute(_) => false,
427 0 : HttpConnError::TooManyConnectionAttempts(_) => false,
428 : }
429 0 : }
430 : }
431 : impl ShouldRetryWakeCompute for HttpConnError {
432 0 : fn should_retry_wake_compute(&self) -> bool {
433 0 : match self {
434 0 : HttpConnError::PostgresConnectionError(e) => e.should_retry_wake_compute(),
435 : // we never checked cache validity
436 0 : HttpConnError::TooManyConnectionAttempts(_) => false,
437 0 : _ => true,
438 : }
439 0 : }
440 : }
441 :
442 : impl ReportableError for LocalProxyConnError {
443 0 : fn get_error_kind(&self) -> ErrorKind {
444 0 : match self {
445 0 : LocalProxyConnError::Io(_) => ErrorKind::Compute,
446 0 : LocalProxyConnError::H2(_) => ErrorKind::Compute,
447 : }
448 0 : }
449 : }
450 :
451 : impl UserFacingError for LocalProxyConnError {
452 0 : fn to_string_client(&self) -> String {
453 0 : "Could not establish HTTP connection to the database".to_string()
454 0 : }
455 : }
456 :
457 : impl CouldRetry for LocalProxyConnError {
458 0 : fn could_retry(&self) -> bool {
459 0 : match self {
460 0 : LocalProxyConnError::Io(_) => false,
461 0 : LocalProxyConnError::H2(_) => false,
462 : }
463 0 : }
464 : }
465 : impl ShouldRetryWakeCompute for LocalProxyConnError {
466 0 : fn should_retry_wake_compute(&self) -> bool {
467 0 : match self {
468 0 : LocalProxyConnError::Io(_) => false,
469 0 : LocalProxyConnError::H2(_) => false,
470 : }
471 0 : }
472 : }
473 :
474 : struct TokioMechanism {
475 : pool: Arc<GlobalConnPool<tokio_postgres::Client>>,
476 : conn_info: ConnInfo,
477 : conn_id: uuid::Uuid,
478 :
479 : /// connect_to_compute concurrency lock
480 : locks: &'static ApiLocks<Host>,
481 : }
482 :
483 : #[async_trait]
484 : impl ConnectMechanism for TokioMechanism {
485 : type Connection = Client<tokio_postgres::Client>;
486 : type ConnectError = HttpConnError;
487 : type Error = HttpConnError;
488 :
489 0 : async fn connect_once(
490 0 : &self,
491 0 : ctx: &RequestMonitoring,
492 0 : node_info: &CachedNodeInfo,
493 0 : timeout: Duration,
494 0 : ) -> Result<Self::Connection, Self::ConnectError> {
495 0 : let host = node_info.config.get_host()?;
496 0 : let permit = self.locks.get_permit(&host).await?;
497 :
498 0 : let mut config = (*node_info.config).clone();
499 0 : let config = config
500 0 : .user(&self.conn_info.user_info.user)
501 0 : .dbname(&self.conn_info.dbname)
502 0 : .connect_timeout(timeout);
503 0 :
504 0 : let pause = ctx.latency_timer_pause(crate::metrics::Waiting::Compute);
505 0 : let res = config.connect(tokio_postgres::NoTls).await;
506 0 : drop(pause);
507 0 : let (client, connection) = permit.release_result(res)?;
508 :
509 0 : tracing::Span::current().record("pid", tracing::field::display(client.get_process_id()));
510 0 : Ok(poll_client(
511 0 : self.pool.clone(),
512 0 : ctx,
513 0 : self.conn_info.clone(),
514 0 : client,
515 0 : connection,
516 0 : self.conn_id,
517 0 : node_info.aux.clone(),
518 0 : ))
519 0 : }
520 :
521 0 : fn update_connect_config(&self, _config: &mut compute::ConnCfg) {}
522 : }
523 :
524 : struct HyperMechanism {
525 : pool: Arc<http_conn_pool::GlobalConnPool<Send>>,
526 : conn_info: ConnInfo,
527 : conn_id: uuid::Uuid,
528 :
529 : /// connect_to_compute concurrency lock
530 : locks: &'static ApiLocks<Host>,
531 : }
532 :
533 : #[async_trait]
534 : impl ConnectMechanism for HyperMechanism {
535 : type Connection = http_conn_pool::Client<Send>;
536 : type ConnectError = HttpConnError;
537 : type Error = HttpConnError;
538 :
539 0 : async fn connect_once(
540 0 : &self,
541 0 : ctx: &RequestMonitoring,
542 0 : node_info: &CachedNodeInfo,
543 0 : timeout: Duration,
544 0 : ) -> Result<Self::Connection, Self::ConnectError> {
545 0 : let host = node_info.config.get_host()?;
546 0 : let permit = self.locks.get_permit(&host).await?;
547 :
548 0 : let pause = ctx.latency_timer_pause(crate::metrics::Waiting::Compute);
549 :
550 0 : let port = *node_info.config.get_ports().first().ok_or_else(|| {
551 0 : HttpConnError::WakeCompute(WakeComputeError::BadComputeAddress(
552 0 : "local-proxy port missing on compute address".into(),
553 0 : ))
554 0 : })?;
555 0 : let res = connect_http2(&host, port, timeout).await;
556 0 : drop(pause);
557 0 : let (client, connection) = permit.release_result(res)?;
558 :
559 0 : Ok(poll_http2_client(
560 0 : self.pool.clone(),
561 0 : ctx,
562 0 : &self.conn_info,
563 0 : client,
564 0 : connection,
565 0 : self.conn_id,
566 0 : node_info.aux.clone(),
567 0 : ))
568 0 : }
569 :
570 0 : fn update_connect_config(&self, _config: &mut compute::ConnCfg) {}
571 : }
572 :
573 0 : async fn connect_http2(
574 0 : host: &str,
575 0 : port: u16,
576 0 : timeout: Duration,
577 0 : ) -> Result<(http_conn_pool::Send, http_conn_pool::Connect), LocalProxyConnError> {
578 : // assumption: host is an ip address so this should not actually perform any requests.
579 : // todo: add that assumption as a guarantee in the control-plane API.
580 0 : let mut addrs = lookup_host((host, port))
581 0 : .await
582 0 : .map_err(LocalProxyConnError::Io)?;
583 :
584 0 : let mut last_err = None;
585 :
586 0 : let stream = loop {
587 0 : let Some(addr) = addrs.next() else {
588 0 : return Err(last_err.unwrap_or_else(|| {
589 0 : LocalProxyConnError::Io(io::Error::new(
590 0 : io::ErrorKind::InvalidInput,
591 0 : "could not resolve any addresses",
592 0 : ))
593 0 : }));
594 : };
595 :
596 0 : match tokio::time::timeout(timeout, TcpStream::connect(addr)).await {
597 0 : Ok(Ok(stream)) => {
598 0 : stream.set_nodelay(true).map_err(LocalProxyConnError::Io)?;
599 0 : break stream;
600 : }
601 0 : Ok(Err(e)) => {
602 0 : last_err = Some(LocalProxyConnError::Io(e));
603 0 : }
604 0 : Err(e) => {
605 0 : last_err = Some(LocalProxyConnError::Io(io::Error::new(
606 0 : io::ErrorKind::TimedOut,
607 0 : e,
608 0 : )));
609 0 : }
610 : };
611 : };
612 :
613 0 : let (client, connection) = hyper::client::conn::http2::Builder::new(TokioExecutor::new())
614 0 : .timer(TokioTimer::new())
615 0 : .keep_alive_interval(Duration::from_secs(20))
616 0 : .keep_alive_while_idle(true)
617 0 : .keep_alive_timeout(Duration::from_secs(5))
618 0 : .handshake(TokioIo::new(stream))
619 0 : .await?;
620 :
621 0 : Ok((client, connection))
622 0 : }
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