v0.33.8

src/proxy/request_id.rs

@@ -0,0 +1,26 @@
+fn request_id_hash(sequence: u64) -> String {
+    use rand::TryRng;
+    use sha2::{Digest, Sha256};
+
+    let mut nonce = [0u8; 32];
+    let mut rng = rand::rngs::SysRng;
+    rng.try_fill_bytes(&mut nonce)
+        .expect("secure operating system random source unavailable");
+    let mut hash = Sha256::new();
+    hash.update(sequence.to_be_bytes());
+    hash.update(nonce);
+    request_id_hex(&hash.finalize())
+}
+
+fn request_id_hex(digest: &[u8]) -> String {
+    const HEX: &[u8; 16] = b"0123456789abcdef";
+    let mut encoded = String::with_capacity(digest.len() * 2);
+    for &byte in digest {
+        encoded.push(HEX[(byte >> 4) as usize] as char);
+        encoded.push(HEX[(byte & 0x0f) as usize] as char);
+    }
+    encoded
+}
+
+#[cfg(test)]
+include!("request_id/tests.rs");