Replace nanorand with fastrand

CHANGELOG.md

@@ -1,10 +1,16 @@
 # Changes
 
-## [4.2.0] - Unreleased
+## [4.3.0] - 2026-10-17
+
+* Replace `nanorand` with `fastrand`. `nanorand` does not link `advapi32` on Windows
+  (unresolved `SystemFunction036`), and the client pool seeded a new generator from
+  the OS for every request
 
 * Avoid temporary byte slices when consuming HPACK headers and discard string prefixes
   before slicing values, allowing more short values to use inline storage
 
+## [4.2.0] - 2026-10-05
+
 * Client APIs take a `secure` flag instead of `ntex_http::uri::Scheme`,
   `Connector::scheme()` and `ClientBuilder::scheme()` are renamed to `secure()`
 

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ntex-h2"
-version = "4.2.0"
+version = "4.3.0"
 license = "MIT OR Apache-2.0"
 authors = ["Nikolay Kim <fafhrd91@gmail.com>"]
 description = "An HTTP/2 client and server"
@@ -23,23 +23,23 @@
 features = []
 
 [dependencies]
-ntex-bytes = "1.11"
+ntex-bytes = "1.12"
 ntex-codec = "2.0"
 ntex-dispatcher = "4.3"
 ntex-error = "3.0"
 ntex-http = "2.0"
-ntex-io = "4.3"
-ntex-net = "4.3"
+ntex-io = "4.4"
+ntex-net = "4.4"
 ntex-service = "5.2"
 ntex-util = "4.3"
 ntex-server = "4.2"
 
 bitflags = "2"
+fastrand = "2.3"
 foldhash = "0.2"
 log = "0.4"
 pin-project-lite = "0.2"
 thiserror = "2"
-nanorand = { version = "0.8", default-features = false, features = ["std", "wyrand", "entropy", "tls"] }
 
 [dev-dependencies]
 # Fuzzing
@@ -52,7 +52,7 @@
 serde = "1"
 serde_json = "1"
 
-ntex = { version = "4.0.0-beta.18", features = ["openssl"] }
+ntex = { version = "4.3.0", features = ["openssl"] }
 ntex-tls = { version = "4.3.1", features = ["openssl"] }
 openssl = "0.10"
 

src/client/pool.rs

@@ -1,7 +1,6 @@
 use std::collections::VecDeque;
 use std::{cell::Cell, cell::RefCell, fmt, marker::PhantomData, rc::Rc, time::Duration};
 
-use nanorand::{Rng, WyRand};
 use ntex_bytes::ByteString;
 use ntex_error::Error;
 use ntex_http::{HeaderMap, Method};
@@ -156,7 +155,7 @@ impl Client {
                 // check existing connections
                 let available = connections.iter().filter(|item| item.is_ready()).count();
                 let client = if available > 0 {
-                    let idx = WyRand::new().generate_range(0_usize..available);
+                    let idx = fastrand::usize(..available);
                     connections
                         .iter()
                         .filter(|item| item.is_ready())

src/client/simple.rs

@@ -1,6 +1,5 @@
 use std::{fmt, future::Future, pin::Pin, rc::Rc, task::Context, task::Poll, time::SystemTime};
 
-use nanorand::Rng;
 use ntex_bytes::{BufMut, ByteString, BytesMut};
 use ntex_dispatcher::Dispatcher as IoDispatcher;
 use ntex_error::Error;
@@ -387,11 +386,9 @@ impl Future for ClientDisconnect {
 fn gen_id() -> ByteString {
     const BASE: &[u8] = b"abcdefghijklmnopqrstuvwxyz234567";
 
-    let mut rng = nanorand::tls_rng();
     let mut id = BytesMut::with_capacity(16);
     for _ in 0..16 {
-        let idx = rng.generate_range::<usize, _>(..BASE.len());
-        id.put_u8(BASE[idx]);
+        id.put_u8(BASE[fastrand::usize(..BASE.len())]);
     }
     ByteString::try_from(id).unwrap()
 }