From 52049c456e395cd5c6b22c5d3df8cd10bdbcd186 Mon Sep 17 00:00:00 2001
From: ju6ge <judge@felixrichter.tech>
Date: Sun, 10 May 2026 17:22:45 +0200
Subject: [PATCH] update read_up_to_bytes_from_request with more robust
 implementation

---
 rust/src/webserver/mod.rs | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/rust/src/webserver/mod.rs b/rust/src/webserver/mod.rs
index 7f128aa..e03ce19 100644
--- a/rust/src/webserver/mod.rs
+++ b/rust/src/webserver/mod.rs
@@ -221,12 +221,18 @@ where
     let mut data_store = Vec::new();
     let mut total_read = 0;
     loop {
+        let left = max_read - total_read;
         let mut buf = [0_u8; 64];
-        let read = request.read(&mut buf).await?;
+        let s_buf = if buf.len() <= left {
+            &mut buf
+        } else {
+            &mut buf[0..left]
+        };
+        let read = request.read(s_buf).await?;
         if read == 0 {
             break;
         }
-        let actual_data = &buf[0..read];
+        let actual_data = &s_buf[0..read];
         total_read += read;
         if total_read > max_read {
             bail!("Request too large {total_read} > {max_read}");