rust_web_server/
lib.rs

1//! # rust-web-server
2//!
3//! An HTTP/1.1, HTTP/2, and HTTP/3 (QUIC) server, reverse proxy, and
4//! application framework in one crate. HTTP/1.1 parsing, routing, middleware,
5//! JSON, WebSocket, and SSE are implemented in-crate; HTTP/2 and HTTP/3
6//! framing use the `h2` and `quinn`/`h3` crates, and TLS uses `rustls`.
7//!
8//! ## Use as a library
9//!
10//! Add to `Cargo.toml`:
11//!
12//! ```toml
13//! [dependencies]
14//! rust-web-server = "17"
15//! ```
16//!
17//! ## Quick start
18//!
19//! ```rust,no_run
20//! use rust_web_server::prelude::*;
21//!
22//! fn hello(_: &Request, _: &PathParams, _: &ConnectionInfo, _: &()) -> Response {
23//!     Response::text(STATUS_CODE_REASON_PHRASE.n200_ok, "Hello, world!")
24//! }
25//!
26//! fn main() {
27//!     let app = App::with_state(()).get("/hello", hello);
28//!     let (listener, pool) = Server::setup().unwrap();
29//!     Server::run(listener, pool, app);
30//! }
31//! ```
32//!
33//! See [DEVELOPER.md](https://github.com/bohdaq/rust-web-server/blob/main/DEVELOPER.md)
34//! for the full building blocks reference and use case examples.
35
36// Allows `::rust_web_server::…` paths to resolve from within this crate's own
37// tests, which is required by proc-macro derive output that uses that prefix.
38extern crate self as rust_web_server;
39
40pub mod app;
41#[cfg(feature = "auth")]
42pub mod auth;
43
44#[cfg(feature = "macros")]
45pub use rws_macros::{delete, get, patch, post, put, route, Config, FromRequest, JsonSchema, Validate};
46#[cfg(all(feature = "macros", any(feature = "model-sqlite", feature = "model-postgres", feature = "model-mysql")))]
47pub use rws_macros::Model;
48#[cfg(feature = "http2")]
49pub mod async_state;
50#[cfg(feature = "http2")]
51pub(crate) mod async_bridge;
52pub mod session;
53// Socket-coupled — see spec/WASM_SHIM.md for what a wasm32-wasip2 build
54// excludes and why (no OS threads, no raw TCP/TLS in a WASI guest).
55#[cfg(not(target_arch = "wasm32"))]
56pub(crate) mod redis_protocol;
57pub mod sse;
58pub mod compression;
59pub mod cookie;
60pub mod error;
61pub mod extract;
62pub mod i18n;
63pub mod ip_filter;
64pub mod macros;
65pub mod blocklist;
66pub mod cache;
67pub mod early_hints;
68pub mod disk_guard;
69pub mod traffic;
70pub mod authz;
71pub mod config_reload;
72#[cfg(not(target_arch = "wasm32"))]
73pub mod config_watch;
74pub mod config_check;
75/// RSA public keys and RS256 / rsa-sha256 signature verification (no `rsa` crate).
76#[cfg(any(feature = "auth-asymmetric", feature = "sso"))]
77pub mod rsa_key;
78pub mod server_config;
79pub mod feature;
80pub mod maintenance;
81pub mod metrics;
82pub mod mcp;
83pub mod request_log;
84pub mod request_id;
85#[cfg(not(target_arch = "wasm32"))]
86pub mod otel;
87#[cfg(feature = "acme")]
88pub mod acme;
89pub mod middleware;
90pub mod rate_limit;
91pub mod router;
92pub mod schema;
93pub mod state;
94pub mod test_client;
95pub mod application;
96pub mod body;
97pub mod client_hint;
98pub mod controller;
99pub mod core;
100pub mod cors;
101pub mod entry_point;
102pub mod ext;
103pub mod header;
104pub mod http;
105pub mod json;
106pub mod language;
107#[cfg(not(target_arch = "wasm32"))]
108pub mod log;
109pub mod mime_type;
110pub mod null;
111pub mod range;
112pub mod request;
113pub mod response;
114pub mod server;
115pub mod symbol;
116#[cfg(not(target_arch = "wasm32"))]
117pub mod thread_pool;
118pub mod url;
119pub mod pagination;
120#[cfg(not(target_arch = "wasm32"))]
121pub mod proxy;
122pub mod rewrite;
123pub mod scheduler;
124#[cfg(not(target_arch = "wasm32"))]
125pub mod tcp_proxy;
126#[cfg(not(target_arch = "wasm32"))]
127pub mod udp_proxy;
128#[cfg(not(target_arch = "wasm32"))]
129pub mod ws_proxy;
130#[cfg(not(target_arch = "wasm32"))]
131pub mod canary;
132#[cfg(not(target_arch = "wasm32"))]
133pub mod circuit_breaker;
134// `BackendPool`/`DiscoverySource` (DNS/etcd/Consul/Docker) are native-only —
135// gated internally in service_discovery/mod.rs, not at this declaration —
136// because `json_lite` (a plain JSON parser, no sockets) must stay available
137// for `secrets`'s Vault/AWS-SM/Key-Vault backends on every target.
138pub mod service_discovery;
139/// DNS wire format, shared by the SRV service discovery and ACME's DNS-01.
140pub(crate) mod dns;
141pub mod config_binding;
142pub mod di;
143#[cfg(not(target_arch = "wasm32"))]
144pub mod proxy_config;
145#[cfg(not(target_arch = "wasm32"))]
146pub mod llm;
147#[cfg(not(target_arch = "wasm32"))]
148pub mod admin;
149#[cfg(feature = "wasm-plugins")]
150pub mod wasm_plugin;
151#[cfg(not(target_arch = "wasm32"))]
152pub mod ingress;
153#[cfg(feature = "tera")]
154pub mod template;
155pub mod validate;
156pub mod virtual_host;
157#[cfg(any(feature = "model-sqlite", feature = "model-postgres", feature = "model-mysql"))]
158pub mod model;
159#[cfg(not(target_arch = "wasm32"))]
160pub mod websocket;
161// Has both a native (TcpStream/rustls) and a wasm32 (wasi:http outgoing-handler)
162// backend behind Client::send() — see the #[cfg(target_arch = "wasm32")]
163// `send_once` in this module. spec/WASM_SHIM.md Phase 2 item 7.
164pub mod http_client;
165#[cfg(feature = "crypto")]
166pub mod crypto;
167#[cfg(feature = "csrf")]
168pub mod csrf;
169#[cfg(feature = "sso")]
170pub mod sso;
171// SMTP is a raw-TCP protocol with no wasi:http equivalent (unlike
172// http_client, which the host can proxy via outgoing-handler) — genuinely
173// can't work in a wasi:http guest, not just ungated. spec/WASM_SHIM.md.
174#[cfg(all(feature = "mailer", not(target_arch = "wasm32")))]
175pub mod mailer;
176#[cfg(feature = "jobs")]
177pub mod jobs;
178// Also compiled under `secrets` — `secrets::aws_secrets_manager`/`azure_key_vault`
179// reuse `StorageError` and the SigV4/Managed-Identity credential helpers from here.
180#[cfg(any(feature = "storage-local", feature = "storage-s3", feature = "storage-azure", feature = "storage-gcs", feature = "secrets"))]
181pub mod storage;
182#[cfg(feature = "openapi")]
183pub mod openapi;
184#[cfg(feature = "tower")]
185pub mod tower;
186#[cfg(feature = "gateway-api")]
187pub mod gateway_api;
188#[cfg(feature = "webhook")]
189pub mod webhook;
190#[cfg(feature = "secrets")]
191pub mod secrets;
192// Runs wrapped work on a background OS thread to bound wait time — needs
193// `std::thread::spawn`, unavailable on wasm32-wasip2. See spec/WASM_SHIM.md.
194#[cfg(not(target_arch = "wasm32"))]
195pub mod timeout;
196pub mod prelude;
197
198#[cfg(feature = "http2")]
199#[doc(hidden)]
200pub mod tls;
201
202#[cfg(feature = "http2")]
203#[doc(hidden)]
204pub mod h2_server;
205
206#[cfg(feature = "http3")]
207#[doc(hidden)]
208pub mod h3_handler;
209
210/// Shared infrastructure for tests that write process-wide environment variables.
211///
212/// Tests that call `override_environment_variables_from_config` or
213/// `CommandLineArgument::set_environment_variable` must hold this lock for
214/// their entire duration so they don't race with other tests reading the
215/// same variables.
216#[cfg(test)]
217mod stack_depth_tests;
218
219/// A rustls client-config builder with this crate's crypto provider
220/// (aws-lc-rs) named explicitly. `rustls::ClientConfig::builder()` uses the
221/// process-wide default provider and panics when none is installed and more
222/// than one is compiled in — which happens as soon as any dependency enables
223/// rustls's `ring` backend (e.g. sqlx). Every outbound TLS client in the
224/// crate starts here.
225#[cfg(all(any(feature = "http-client", feature = "http2"), not(target_arch = "wasm32")))]
226pub(crate) fn tls_client_builder() -> rustls::ConfigBuilder<rustls::ClientConfig, rustls::WantsVerifier> {
227    rustls::ClientConfig::builder_with_provider(std::sync::Arc::new(rustls::crypto::aws_lc_rs::default_provider()))
228        .with_safe_default_protocol_versions()
229        .expect("aws-lc-rs supports rustls's default protocol versions")
230}
231
232#[cfg(test)]
233pub mod test_env {
234    use std::sync::{Mutex, OnceLock};
235    static LOCK: OnceLock<Mutex<()>> = OnceLock::new();
236    pub fn lock() -> std::sync::MutexGuard<'static, ()> {
237        LOCK.get_or_init(|| Mutex::new(()))
238            .lock()
239            .unwrap_or_else(|e| e.into_inner())
240    }
241
242    /// A per-process path under the OS temp dir that is deleted (file or
243    /// directory) when dropped — so a test cleans up even when an assertion
244    /// fails before its last line.
245    pub struct TempPath(std::path::PathBuf);
246
247    impl TempPath {
248        pub fn new(name: &str) -> Self {
249            TempPath(std::env::temp_dir().join(format!("rws_test_{}_{}", std::process::id(), name)))
250        }
251
252        /// The same in the working directory (the static-file root), for
253        /// tests that need a file the server would serve.
254        pub fn new_in_cwd(name: &str) -> Self {
255            TempPath(std::env::current_dir().expect("working directory").join(format!("rws_test_{}_{}", std::process::id(), name)))
256        }
257
258        pub fn as_str(&self) -> &str {
259            self.0.to_str().expect("temp dir path is UTF-8")
260        }
261    }
262
263    impl std::ops::Deref for TempPath {
264        type Target = std::path::Path;
265        fn deref(&self) -> &std::path::Path {
266            &self.0
267        }
268    }
269
270    impl Drop for TempPath {
271        fn drop(&mut self) {
272            // A symlink is removed itself, never followed (a test may link
273            // to a system directory).
274            let is_link = std::fs::symlink_metadata(&self.0).is_ok_and(|m| m.file_type().is_symlink());
275            if is_link {
276                let _ = std::fs::remove_file(&self.0);
277            } else if self.0.is_dir() {
278                let _ = std::fs::remove_dir_all(&self.0);
279            } else {
280                let _ = std::fs::remove_file(&self.0);
281            }
282        }
283    }
284}
285
286/// Entry points for `fuzz/` targets that reach crate-private parsers.
287/// Compiled only under `--cfg fuzzing`, which `cargo fuzz` sets — never part
288/// of the public API.
289#[cfg(fuzzing)]
290#[doc(hidden)]
291pub mod fuzz_api {
292    /// Proxy route-matching normalization of a request target (#50): any
293    /// input, and normalizing twice changes nothing.
294    pub fn proxy_normalize_target(data: &[u8]) {
295        let Ok(target) = std::str::from_utf8(data) else { return };
296        let once = crate::proxy_config::normalize_request_target(target).into_owned();
297        let twice = crate::proxy_config::normalize_request_target(&once).into_owned();
298        assert_eq!(once, twice, "normalization is not idempotent for {:?}", target);
299    }
300
301    /// Static-file request-path decoding (#55). Must never panic; the
302    /// decoded path never carries a `..` segment past the web-root check.
303    pub fn static_path_decode(data: &[u8]) {
304        let Ok(path) = std::str::from_utf8(data) else { return };
305        if let Ok(fs_path) = crate::app::controller::static_resource::static_fs_path(path) {
306            let relative = &fs_path[crate::app::controller::static_resource::working_directory().len()..];
307            assert!(!relative.split(['/', '\\']).any(|segment| segment == ".."), "{:?} -> {:?}", path, fs_path);
308        }
309    }
310
311    /// `Accept-Language` parsing and negotiation (#33): any header value;
312    /// at most `MAX_LANGUAGE_RANGES` ranges, and the language chosen is
313    /// always one of those offered.
314    pub fn accept_language(data: &[u8]) {
315        let Ok(value) = std::str::from_utf8(data) else { return };
316        let preferences = crate::i18n::AcceptLanguage::parse(value);
317        assert!(preferences.0.len() <= crate::i18n::MAX_LANGUAGE_RANGES);
318        let available = ["en", "en-GB", "uk", "pt-BR"];
319        if let Some(chosen) = preferences.negotiate(&available) {
320            assert!(available.contains(&chosen));
321        }
322    }
323
324    /// i18n catalog text (#33): any input; whatever parses translates
325    /// without panicking, plurals and placeholders included.
326    pub fn i18n_catalog(data: &[u8]) {
327        let Ok(text) = std::str::from_utf8(data) else { return };
328        if let Ok(catalogs) = crate::i18n::Catalogs::new("en").add("en", text) {
329            let t = catalogs.for_language("en");
330            for line in text.lines() {
331                let key = line.split('=').next().unwrap_or("").trim();
332                let _ = t.t_with(key, &[("name", "x")]);
333                let _ = t.plural(key.trim_end_matches(".one").trim_end_matches(".other"), 3);
334            }
335        }
336    }
337
338    /// `Accept-Encoding` negotiation (#7): any header value; the choice is
339    /// always one of the offered codings, and a coding the value refuses
340    /// (its first `q=` parameter is 0) is never chosen.
341    pub fn accept_encoding(data: &[u8]) {
342        let Ok(value) = std::str::from_utf8(data) else { return };
343        let request = crate::request::Request {
344            method: "GET".to_string(),
345            request_uri: "/".to_string(),
346            http_version: "HTTP/1.1".to_string(),
347            headers: vec![crate::header::Header::new(crate::header::Header::_ACCEPT_ENCODING, value.to_string())],
348            body: Default::default(),
349        };
350        for preference in [crate::compression::DYNAMIC_PREFERENCE, crate::compression::STATIC_PREFERENCE] {
351            if let Some(chosen) = crate::compression::negotiate(&request, preference) {
352                assert!(preference.contains(&chosen));
353                // Refused: the coding's first `q=` parameter is exactly 0.
354                let refused = value.split(',').any(|c| {
355                    let mut parts = c.split(';');
356                    parts.next().unwrap_or("").trim().eq_ignore_ascii_case(chosen.token())
357                        && parts
358                            .map(str::trim)
359                            .find(|p| p.as_bytes().get(..2).is_some_and(|b| b.eq_ignore_ascii_case(b"q=")))
360                            .is_some_and(|q| q[2..].trim().parse::<f32>() == Ok(0.0))
361                });
362                let listed_once = value.split(',').filter(|c| c.split(';').next().unwrap_or("").trim().eq_ignore_ascii_case(chosen.token())).count() == 1;
363                assert!(!(refused && listed_once), "{value:?} refused {chosen:?}");
364            }
365        }
366    }
367
368    /// What a WebAssembly plugin returns, as the host reads it (#40).
369    /// Must never panic.
370    #[cfg(feature = "wasm-plugins")]
371    pub fn wasm_plugin_output(data: &[u8]) {
372        let _ = crate::wasm_plugin::parse_request_output(data);
373        let _ = crate::wasm_plugin::parse_response_output(data);
374    }
375
376    /// A disk-cache entry file as the cache reads it back (#39): the header
377    /// line and key, then the stored response. Must never panic.
378    pub fn cache_entry(data: &[u8]) {
379        if let Some((_, _, _, offset)) = crate::cache::disk::parse_entry_header(data) {
380            let _ = crate::response::Response::parse_upstream(&data[offset..], crate::proxy::REGENERATED_OR_HOP_BY_HOP);
381        }
382    }
383
384    /// A request as the traffic classifier sees it: the first line is the
385    /// User-Agent, the rest the path; the address comes from the first byte.
386    pub fn traffic_classify(data: &[u8]) {
387        let text = String::from_utf8_lossy(data);
388        let (ua, path) = text.split_once('\n').unwrap_or((&text, "/"));
389        let ip = std::net::IpAddr::from([data.first().copied().unwrap_or(1), 2, 3, 4]);
390        let class = crate::traffic::classify(ip, Some(ua), path);
391        let _ = (class.group(), class.kind.label());
392    }
393
394    /// Authorization text as the admin API and config file read it (#32):
395    /// a tuple, a subject, and a relation definition.
396    pub fn authz_parse(data: &[u8]) {
397        let text = String::from_utf8_lossy(data);
398        let _ = crate::authz::Tuple::parse(&text);
399        let _ = crate::authz::Subject::parse(&text);
400        if let Ok(terms) = crate::authz::rebac::parse_expression(&text) {
401            let _ = terms.len();
402            let _ = crate::authz::Schema::new().relation("t", "r", &text).and_then(|s| s.validate());
403        }
404    }
405
406    /// An `Available-Dictionary` header value, and dictionary-compressed
407    /// bodies through both decoders (#38).
408    pub fn available_dictionary(data: &[u8]) {
409        use crate::compression::dictionary::{decode, parse_available_dictionary, DictionaryEncoding};
410        let _ = parse_available_dictionary(&String::from_utf8_lossy(data));
411        for encoding in [DictionaryEncoding::Dcz, DictionaryEncoding::Dcb] {
412            let _ = decode(encoding, data, b"dictionary", 1 << 16);
413        }
414    }
415
416    /// Provider responses as the LLM proxy reads them (#41): usage from a
417    /// JSON body or an event stream fed in pieces, and chunked framing.
418    /// Must never panic.
419    pub fn llm_usage(data: &[u8]) {
420        for content_type in ["application/json", "text/event-stream"] {
421            let mut parser = crate::llm::UsageParser::new(content_type);
422            for piece in data.chunks(7) {
423                parser.feed(piece);
424            }
425            let _ = parser.finish();
426        }
427        let mut decoder = crate::llm::usage::ChunkDecoder::default();
428        let mut out = Vec::new();
429        let _ = decoder.decode(data, &mut out);
430    }
431
432    /// An upstream MCP server's reply as the gateway reads it (#62): a JSON
433    /// body or an event stream, then the response's tools. Must never panic.
434    pub fn mcp_gateway_reply(data: &[u8]) {
435        for content_type in ["application/json", "text/event-stream"] {
436            if let Ok(result) = crate::mcp::gateway::parse_reply(content_type, data, 1) {
437                let _ = crate::mcp::gateway::fuzzing::tools(&result);
438            }
439        }
440    }
441
442    /// A WebSocket frame from a client (#8): any bytes; a frame never holds
443    /// more payload than the limit allows. Must never panic.
444    #[cfg(not(target_arch = "wasm32"))]
445    pub fn websocket_frame(data: &[u8]) {
446        let mut cursor = std::io::Cursor::new(data);
447        while let Ok(frame) = crate::websocket::WebSocket::read_frame_limited(&mut cursor, 4096) {
448            let len = match &frame {
449                crate::websocket::Frame::Text(t) => t.len(),
450                crate::websocket::Frame::Binary(b) | crate::websocket::Frame::Ping(b) | crate::websocket::Frame::Pong(b) => b.len(),
451                crate::websocket::Frame::Continuation { data, .. } => data.len(),
452                crate::websocket::Frame::Close(_, reason) => reason.len() + 2,
453            };
454            assert!(len <= 4096 + 2);
455        }
456    }
457
458    /// A DNS response read for SRV records (#8). Must never panic.
459    #[cfg(not(target_arch = "wasm32"))]
460    pub fn dns_srv_response(data: &[u8]) {
461        let id = data.get(..2).map_or(0, |b| u16::from_be_bytes([b[0], b[1]]));
462        let _ = crate::service_discovery::dns_srv::parse_response(data, id);
463    }
464
465    /// A DNS message: the shared parser (SRV discovery, ACME DNS-01), TXT
466    /// values and, with `acme`, a DNS UPDATE reply. Must never panic.
467    /// A certificate's subjectAltNames, as a BackendTLSPolicy checks a
468    /// backend's (untrusted) certificate. Must never panic.
469    pub fn x509_subject_alt_names(data: &[u8]) {
470        let _ = crate::core::x509::subject_alt_names(data);
471    }
472
473    pub fn dns_message(data: &[u8]) {
474        if let Ok(message) = crate::dns::parse(data) {
475            for record in message.answers.iter().chain(&message.authority).chain(&message.additional) {
476                let _ = crate::dns::txt_value(&data[record.rdata.clone()]);
477            }
478        }
479        #[cfg(feature = "acme")]
480        let _ = crate::acme::dns01::check_update_reply(data, 0);
481    }
482
483    /// A Redis (RESP) reply (#8). Must never panic.
484    #[cfg(not(target_arch = "wasm32"))]
485    pub fn redis_reply(data: &[u8]) {
486        let _ = crate::redis_protocol::read_reply(&mut std::io::Cursor::new(data));
487    }
488
489    /// A `Cookie` request header (#8): every parsed cookie has a name.
490    pub fn cookie_header(data: &[u8]) {
491        let Ok(value) = std::str::from_utf8(data) else { return };
492        let jar = crate::cookie::CookieJar::parse(value);
493        assert!(jar.cookies.iter().all(|c| !c.name.is_empty()));
494    }
495
496    /// A W3C `baggage` header (#25): members survive a round trip through
497    /// the header. Must never panic.
498    #[cfg(not(target_arch = "wasm32"))]
499    pub fn otel_baggage(data: &[u8]) {
500        let Ok(value) = std::str::from_utf8(data) else { return };
501        let baggage = crate::otel::Baggage::parse(value);
502        assert!(baggage.len() <= crate::otel::baggage::MAX_MEMBERS);
503        let again = crate::otel::Baggage::parse(&baggage.to_header());
504        for (key, value) in baggage.iter() {
505            if let Some(round_tripped) = again.get(key) {
506                assert_eq!(value, round_tripped);
507            }
508        }
509    }
510
511    /// What ACME renewal parses from the CA (#1): certificate DER (validity,
512    /// serial, Authority Key Identifier), renewalInfo windows (RFC 3339) and
513    /// directory profile names. Must never panic.
514    #[cfg(feature = "acme")]
515    pub fn acme_renewal(data: &[u8]) {
516        let _ = crate::acme::fuzzing::cert_info_from_der(data);
517        if let Ok(text) = std::str::from_utf8(data) {
518            let _ = crate::acme::fuzzing::parse_suggested_window(text);
519            let _ = crate::acme::fuzzing::parse_rfc3339(text);
520            let _ = crate::acme::fuzzing::json_object_keys(text, "profiles");
521        }
522    }
523
524    /// The SAML XML parser (`sso::saml::xml`), fed IdP-supplied documents.
525    #[cfg(feature = "sso-saml")]
526    pub fn saml_xml_parse(xml: &str) {
527        let _ = crate::sso::saml::xml_parse_for_fuzzing(xml);
528    }
529
530    /// HTTP/1.1 request framing (`server::framing`) over a raw connection
531    /// buffer: head detection, body framing, and the chunked body decoder,
532    /// fed in two pieces split at the first byte to mimic separate reads.
533    pub fn http1_framing(data: &[u8]) {
534        use crate::server::framing::{self, BodyFraming, ChunkedBody, HeadScan};
535        let mut pending = data.to_vec();
536        framing::skip_leading_empty_lines(&mut pending);
537        let HeadScan::Complete(head_len) = framing::scan_head(&pending) else { return };
538        assert!(head_len <= pending.len() && head_len <= framing::MAX_HEAD_SIZE);
539        let Ok(request) = crate::request::Request::parse(&pending[..head_len]) else { return };
540        for header in &request.headers {
541            let _ = crate::http::date::parse(&header.value);
542        }
543        let _ = framing::validate_head(&pending[..head_len], &request);
544        let _ = framing::keep_alive(&request);
545        let body = &pending[head_len..];
546        if let Ok(BodyFraming::Chunked) = framing::body_framing(&request) {
547            let split = data.first().map_or(0, |&b| b as usize).min(body.len());
548            let mut decoder = ChunkedBody::new(1 << 20);
549            let mut buffer = body[..split].to_vec();
550            for next in [&body[split..], &[][..]] {
551                match decoder.feed(&buffer) {
552                    Ok((consumed, _)) => {
553                        assert!(consumed <= buffer.len());
554                        buffer.drain(..consumed);
555                    }
556                    Err(_) => return,
557                }
558                buffer.extend_from_slice(next);
559            }
560            assert!(decoder.body.len() <= 1 << 20);
561        }
562    }
563}
564
565
566/// Compiles the README's Rust example as a doctest, so it can't drift from the API.
567#[cfg(all(doctest, feature = "http3"))]
568#[doc = include_str!("../README.md")]
569pub struct ReadmeDoctests;
rust_web_server/lib.rs

rust_web_server/
lib.rs
