ET + SM + Crypto Fixes

src/stream/mod.rs

@@ -1,10 +1,22 @@
 //! Stream wrappers for MTProto protocol layers
 
+pub mod state;
+pub mod buffer_pool;
 pub mod traits;
 pub mod crypto_stream;
 pub mod tls_stream;
 pub mod frame_stream;
 
+// Re-export state machine types
+pub use state::{
+    StreamState, Transition, PollResult,
+    ReadBuffer, WriteBuffer, HeaderBuffer, YieldBuffer,
+};
+
+// Re-export buffer pool
+pub use buffer_pool::{BufferPool, PooledBuffer, PoolStats};
+
+// Re-export stream implementations
 pub use crypto_stream::{CryptoReader, CryptoWriter, PassthroughStream};
 pub use tls_stream::{FakeTlsReader, FakeTlsWriter};
 pub use frame_stream::*;