From 658af207abc31190233e10ab943d8ed17c23e20a Mon Sep 17 00:00:00 2001
From: Onran <kotshel2009@gmail.com>
Date: Mon, 22 Jun 2026 15:09:20 +0900
Subject: [PATCH] minor change in binary read_fully

---
 res/modules/io_stream.lua | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/res/modules/io_stream.lua b/res/modules/io_stream.lua
index ef1150237..7a760fa69 100644
--- a/res/modules/io_stream.lua
+++ b/res/modules/io_stream.lua
@@ -218,7 +218,13 @@ function io_stream:read_fully(useTable)
     if self.binaryMode then
         local result = useTable and Bytearray() or { }
 
-        readFully(result, function() return self:__read(self.maxBufferSize, true) end)
+        local avail = self:available()
+
+        if avail == 0 then
+            avail = self.maxBufferSize
+        end
+
+        readFully(result, function() return self:__read(avail, true) end)
 
         return result
     else