fix: allow larger kitty graphics frames

1 files changed, 5 insertions, 0 deletions

diff --git a/src/server/protocol.rs b/src/server/protocol.rs
index e0a3c4a0..1a220767 100644
--- a/src/server/protocol.rs
+++ b/src/server/protocol.rs
@@ -19,6 +19,11 @@ pub const PROTOCOL_VERSION: u32 = 5;
 /// rejected to prevent denial-of-service via oversized length prefixes.
 pub const MAX_FRAME_SIZE: usize = 2 * 1024 * 1024;
 
+/// Maximum allowed server-to-client frame payload when Kitty graphics are enabled.
+/// Normal traffic keeps `MAX_FRAME_SIZE`; this larger cap is only for explicit
+/// image payloads that are naturally much larger after base64 encoding.
+pub const MAX_GRAPHICS_FRAME_SIZE: usize = 32 * 1024 * 1024;
+
 /// Length of the u32 little-endian length prefix in bytes.
 const LENGTH_PREFIX_BYTES: usize = 4;