From 75716075bafdc5617399dd7a6aa32efb8c032705 Mon Sep 17 00:00:00 2001
From: Lorenz Stechauner <lorenz.stechauner@necronda.net>
Date: Tue, 9 Jun 2026 16:13:47 +0200
Subject: [PATCH] utils: Set errno to EAGAIN in parse_chunk_header

---
 src/lib/sock.c  | 2 +-
 src/lib/utils.c | 5 +++--
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/lib/sock.c b/src/lib/sock.c
index 5cf094f..523b096 100644
--- a/src/lib/sock.c
+++ b/src/lib/sock.c
@@ -430,7 +430,7 @@ long sock_recv_chunk_header(sock *s) {
         buf_ptr[ret1] = 0;
 
         if ((ret2 = parse_chunk_header(buf, (buf_ptr - buf) + ret1, &len)) == -1) {
-            if (errno == EPROTO) {
+            if (errno != EAGAIN) {
                 return -1;
             } else {
                 if (sock_recv_x(s, buf_ptr, ret1, 0) == -1)
diff --git a/src/lib/utils.c b/src/lib/utils.c
index 31808d1..245b545 100644
--- a/src/lib/utils.c
+++ b/src/lib/utils.c
@@ -424,9 +424,9 @@ long ftelll(FILE *file) {
     return lines + 1;
 }
 
-long parse_chunk_header(const char *buf, size_t len, size_t *ret_len) {
+long parse_chunk_header(const char *buf, const size_t len, size_t *ret_len) {
     for (int i = 0; i < len; i++) {
-        char ch = buf[i];
+        const char ch = buf[i];
         if (ch == '\r') {
             continue;
         } else if (ch == '\n' && i > 1 && buf[i - 1] == '\r') {
@@ -437,5 +437,6 @@ long parse_chunk_header(const char *buf, size_t len, size_t *ret_len) {
             return -1;
         }
     }
+    errno = EAGAIN;
     return -1;
 }