diff --git a/src/proto/h2/server.rs b/src/proto/h2/server.rs index b9037ee3dd..88f4f88409 100644 --- a/src/proto/h2/server.rs +++ b/src/proto/h2/server.rs @@ -35,6 +35,8 @@ const DEFAULT_CONN_WINDOW: u32 = 1024 * 1024; // 1mb const DEFAULT_STREAM_WINDOW: u32 = 1024 * 1024; // 1mb const DEFAULT_MAX_FRAME_SIZE: u32 = 1024 * 16; // 16kb const DEFAULT_MAX_SEND_BUF_SIZE: usize = 1024 * 400; // 400kb +// 16 MB "sane default" taken from golang http2 +const DEFAULT_SETTINGS_MAX_HEADER_LIST_SIZE: u32 = 16 << 20; #[derive(Clone, Debug)] pub(crate) struct Config { @@ -49,6 +51,7 @@ pub(crate) struct Config { #[cfg(feature = "runtime")] pub(crate) keep_alive_timeout: Duration, pub(crate) max_send_buffer_size: usize, + pub(crate) max_header_list_size: u32, } impl Default for Config { @@ -65,6 +68,7 @@ impl Default for Config { #[cfg(feature = "runtime")] keep_alive_timeout: Duration::from_secs(20), max_send_buffer_size: DEFAULT_MAX_SEND_BUF_SIZE, + max_header_list_size: DEFAULT_SETTINGS_MAX_HEADER_LIST_SIZE, } } } @@ -116,6 +120,7 @@ where .initial_window_size(config.initial_stream_window_size) .initial_connection_window_size(config.initial_conn_window_size) .max_frame_size(config.max_frame_size) + .max_header_list_size(config.max_header_list_size) .max_send_buffer_size(config.max_send_buffer_size); if let Some(max) = config.max_concurrent_streams { builder.max_concurrent_streams(max); diff --git a/src/server/conn.rs b/src/server/conn.rs index 3f9eaf9e62..d5370b0f14 100644 --- a/src/server/conn.rs +++ b/src/server/conn.rs @@ -519,6 +519,16 @@ impl Http { self } + /// Sets the max size of received header frames. + /// + /// Default is currently ~16MB, but may change. + #[cfg(feature = "http2")] + #[cfg_attr(docsrs, doc(cfg(feature = "http2")))] + pub fn http2_max_header_list_size(&mut self, max: u32) -> &mut Self { + self.h2_builder.max_header_list_size = max; + self + } + /// Set the maximum buffer size for the connection. /// /// Default is ~400kb.