diff --git a/hbs2-core/lib/HBS2/Defaults.hs b/hbs2-core/lib/HBS2/Defaults.hs
index 69bad7d5..a58cc3fb 100644
--- a/hbs2-core/lib/HBS2/Defaults.hs
+++ b/hbs2-core/lib/HBS2/Defaults.hs
@@ -1,5 +1,6 @@
 module HBS2.Defaults where
 
+import HBS2.Clock
 import Data.String
 
 defChunkSize :: Integer
@@ -14,4 +15,10 @@ defStorePath = "hbs2"
 defPipelineSize :: Int
 defPipelineSize = 100
 
+-- typical block hash 530+ chunks * parallel wip blocks amount
+defProtoPipelineSize :: Int
+defProtoPipelineSize = 65536
+
+defCookieTimeout :: TimeSpec
+defCookieTimeout = toTimeSpec ( 10  :: Timeout 'Minutes)
 
diff --git a/hbs2-core/lib/HBS2/Net/Peer.hs b/hbs2-core/lib/HBS2/Net/Peer.hs
index 127c64a1..d2a1ab25 100644
--- a/hbs2-core/lib/HBS2/Net/Peer.hs
+++ b/hbs2-core/lib/HBS2/Net/Peer.hs
@@ -135,7 +135,7 @@ newEnv :: forall e bus m . ( Monad m
        -> m (EngineEnv e)
 
 newEnv p pipe = do
-  de <- liftIO $ newPipeline defPipelineSize
+  de <- liftIO $ newPipeline defProtoPipelineSize
   pure $ EngineEnv Nothing p pipe de
 
 runPeer :: forall e m a . ( MonadIO m
diff --git a/hbs2-core/lib/HBS2/Net/Proto.hs b/hbs2-core/lib/HBS2/Net/Proto.hs
index a29435bb..79eeb7a8 100644
--- a/hbs2-core/lib/HBS2/Net/Proto.hs
+++ b/hbs2-core/lib/HBS2/Net/Proto.hs
@@ -4,11 +4,12 @@ module HBS2.Net.Proto
   ) where
 
 import HBS2.Prelude.Plated
+import HBS2.Hash
 import HBS2.Net.Proto.Types
 
 
+dontHandle :: Applicative f => a -> f ()
+dontHandle = const $ pure ()
 
-newtype BlockInfo = BlockInfo Integer
-                    deriving stock (Eq, Data)
-
+type GetBlockSize h m = Hash h -> m (Maybe Integer)
 
diff --git a/hbs2-core/lib/HBS2/Net/Proto/BlockInfo.hs b/hbs2-core/lib/HBS2/Net/Proto/BlockInfo.hs
index 97554306..2b979ac7 100644
--- a/hbs2-core/lib/HBS2/Net/Proto/BlockInfo.hs
+++ b/hbs2-core/lib/HBS2/Net/Proto/BlockInfo.hs
@@ -13,7 +13,6 @@ data BlockSize e = GetBlockSize (Hash HbSync)
 
 type HasBlockEvent h e m = (Peer e, Hash h, Maybe Integer) -> m ()
 
-type GetBlockSize h m = Hash h -> m (Maybe Integer)
 
 instance Serialise (BlockSize e)
 
diff --git a/hbs2-core/lib/HBS2/Net/Proto/Types.hs b/hbs2-core/lib/HBS2/Net/Proto/Types.hs
index ebd60b87..6e27b79e 100644
--- a/hbs2-core/lib/HBS2/Net/Proto/Types.hs
+++ b/hbs2-core/lib/HBS2/Net/Proto/Types.hs
@@ -13,6 +13,9 @@ import Control.Monad.IO.Class
 -- e -> Transport (like, UDP or TChan)
 -- p -> L4 Protocol (like Ping/Pong)
 
+class HasCookie p  where
+  type family Cookie p :: Type
+
 class (Hashable (Peer e), Eq (Peer e)) => HasPeer e where
   data family (Peer e) :: Type
 
diff --git a/hbs2-core/lib/HBS2/Prelude.hs b/hbs2-core/lib/HBS2/Prelude.hs
index 2c0d14fa..76cebd73 100644
--- a/hbs2-core/lib/HBS2/Prelude.hs
+++ b/hbs2-core/lib/HBS2/Prelude.hs
@@ -3,6 +3,7 @@ module HBS2.Prelude
   , module Safe
   , MonadIO(..)
   , void
+  , maybe1
   ) where
 
 import Data.String (IsString(..))
@@ -11,5 +12,6 @@ import Control.Monad.IO.Class (MonadIO(..))
 import Control.Monad (void)
 
 
-
+maybe1 :: Maybe a -> b -> (a -> b) -> b
+maybe1 mb n j = maybe n j mb
 
diff --git a/hbs2-core/lib/HBS2/Storage.hs b/hbs2-core/lib/HBS2/Storage.hs
index 2f0e0eb0..6c926098 100644
--- a/hbs2-core/lib/HBS2/Storage.hs
+++ b/hbs2-core/lib/HBS2/Storage.hs
@@ -1,13 +1,15 @@
 {-# Language FunctionalDependencies #-}
 module HBS2.Storage where
 
-import Data.Kind
-import Data.Hashable hiding (Hashed)
-import Prettyprinter
-
 import HBS2.Hash
 import HBS2.Prelude.Plated
 
+import Data.Kind
+import Data.Hashable hiding (Hashed)
+import Lens.Micro.Platform
+import Prettyprinter
+
+
 class Pretty (Hash h) => IsKey h where
   type Key h :: Type
 
@@ -47,3 +49,12 @@ class ( Monad m
 
 
 
+calcChunks :: forall a b . (Integral a, Integral b)
+           => Integer  -- | block size
+           -> Integer  -- | chunk size
+           -> [(a, b)]
+
+calcChunks s1 s2 = fmap (over _1 fromIntegral . over _2 fromIntegral)  chu
+  where
+    chu = fmap (,s2) (takeWhile (<s1) $ iterate (+s2) 0)
+
diff --git a/hbs2-tests/test/Main.hs b/hbs2-tests/test/Main.hs
index adaef3b7..9c16b24c 100644
--- a/hbs2-tests/test/Main.hs
+++ b/hbs2-tests/test/Main.hs
@@ -1,3 +1,5 @@
+{-# Language FunctionalDependencies #-}
+{-# Language RankNTypes #-}
 module Main where
 
 import HBS2.Prelude.Plated
@@ -8,26 +10,107 @@ import HBS2.Net.Proto
 import HBS2.Net.Proto.BlockInfo
 import HBS2.Net.Messaging.Fake
 import HBS2.Net.Peer
+import HBS2.Defaults
+
 import HBS2.Storage.Simple
 import HBS2.Storage.Simple.Extra
 
 -- import Test.Tasty hiding (Timeout)
-import Test.Tasty.HUnit hiding (Timeout)
+import Test.Tasty.HUnit
 
-import Lens.Micro.Platform
-import Data.Traversable
+import Codec.Serialise
 import Control.Concurrent.Async
+import Data.ByteString.Lazy (ByteString)
+import Data.ByteString.Lazy.Char8 qualified as B8
+import Data.Foldable
 import Data.Hashable
+import Data.Maybe
+import Data.Traversable
 import Data.Word
+import Lens.Micro.Platform
 import Prettyprinter
 import System.Directory
+import System.Exit
 import System.FilePath.Posix
 import System.IO
-import Data.ByteString.Lazy.Char8 qualified as B8
-import Data.ByteString.Lazy (ByteString)
-import Codec.Serialise
-import System.Exit
+import Data.Cache (Cache)
+import Data.Cache qualified as Cache
 
+debug :: (MonadIO m) => Doc ann -> m ()
+debug p = liftIO $ hPrint stderr p
+
+newtype ChunkSize = ChunkSize Word16
+                    deriving newtype (Num,Enum,Real,Integral)
+                    deriving stock (Eq,Ord,Show,Data,Generic)
+
+
+newtype ChunkNum = ChunkNum Word16
+                   deriving newtype (Num,Enum,Real,Integral)
+                   deriving stock (Eq,Ord,Show,Data,Generic)
+
+
+
+type GetBlockChunk h = forall m . MonadIO m => Hash h -> Offset -> Size -> m (Maybe ByteString)
+
+type MyCookie e = Cookie (BlockChunks e)
+
+data BlockChunksI e m =
+  BlockChunksI
+  { blkSize         :: GetBlockSize HbSync m
+  , blkChunk        :: GetBlockChunk HbSync
+  , blkGetHash      :: MyCookie e -> m (Maybe (Hash HbSync))
+  , blkAcceptChunk  :: (Hash HbSync, ChunkNum, ByteString) -> m ()
+  }
+
+data BlockChunks e = BlockGetAllChunks (MyCookie e) (Hash HbSync) ChunkSize
+                   | BlockNoChunks     (MyCookie e)
+                   | BlockChunk        (MyCookie e) ChunkNum ByteString
+                   | BlockLost         (MyCookie e)
+                   deriving stock (Generic)
+
+
+instance HasCookie (BlockChunks e) where
+  type instance Cookie (BlockChunks e) = Word32
+
+instance Serialise ChunkSize
+instance Serialise ChunkNum
+instance Serialise (BlockChunks e)
+
+blockChunksProto :: forall e m  . ( MonadIO m
+                                  , Response e (BlockChunks e) m
+                                  )
+                 => BlockChunksI e m
+                 -> BlockChunks e
+                 -> m ()
+
+blockChunksProto adapter =
+  \case
+    BlockGetAllChunks c h size -> deferred proto do
+      bsz <- blkSize adapter h
+
+      let offsets' = calcChunks (fromJust bsz) (fromIntegral size) :: [(Offset, Size)]
+      let offsets = zip offsets' [0..]
+
+      for_ offsets $ \((o,sz),i) -> do
+        chunk <- blkChunk adapter h o sz
+        maybe (pure ()) (response . BlockChunk @e c i) chunk
+
+    BlockChunk c n bs -> do
+      -- TODO: getHashByCookie c
+      h <- blkGetHash adapter c
+
+      maybe1 h (response (BlockLost @e c)) $ \hh -> do
+        blkAcceptChunk adapter (hh, n, bs)
+
+    BlockNoChunks {} -> do
+      -- TODO: notification
+      pure ()
+
+    BlockLost{} -> do
+      pure ()
+
+  where
+    proto = Proxy @(BlockChunks e)
 
 data Fake
 
@@ -40,8 +123,6 @@ instance HasPeer Fake where
 instance Pretty (Peer Fake) where
   pretty (FakePeer n) = parens ("peer" <+> pretty n)
 
-debug :: (MonadIO m) => Doc ann -> m ()
-debug p = liftIO $ hPrint stderr p
 
 instance HasProtocol Fake (BlockSize Fake) where
   type instance ProtocolId (BlockSize Fake) = 1
@@ -49,10 +130,11 @@ instance HasProtocol Fake (BlockSize Fake) where
   decode = either (const Nothing) Just . deserialiseOrFail
   encode = serialise
 
-
-
-dontHandle :: Applicative f => a -> f ()
-dontHandle = const $ pure ()
+instance HasProtocol Fake (BlockChunks Fake) where
+  type instance ProtocolId (BlockChunks Fake) = 2
+  type instance Encoded Fake = ByteString
+  decode = either (const Nothing) Just . deserialiseOrFail
+  encode = serialise
 
 main :: IO ()
 main = do
@@ -66,7 +148,7 @@ main = do
   --     ]
 
 
-runFakePeer :: EngineEnv Fake -> IO ()
+runFakePeer :: forall e . e ~ Fake => EngineEnv e -> IO ()
 runFakePeer env = do
 
   let pid = fromIntegral (hash (env ^. self)) :: Word8
@@ -97,8 +179,19 @@ runFakePeer env = do
   let handleBlockInfo (p, h, sz) = do
        debug $ pretty p <+> "has block" <+> pretty h <+> pretty sz
 
+  blkCookies <- Cache.newCache @(Cookie (BlockChunks e)) @(Hash HbSync) (Just defCookieTimeout)
+
+  let adapter =
+        BlockChunksI
+        { blkSize        = hasBlock storage
+        , blkChunk       = getChunk storage
+        , blkGetHash     = liftIO . Cache.lookup blkCookies
+        , blkAcceptChunk = dontHandle
+        }
+
   runPeer env
     [ makeResponse (blockSizeProto (hasBlock storage) handleBlockInfo)
+    , makeResponse (blockChunksProto adapter)
     ]
 
   cancel w
@@ -128,6 +221,22 @@ test1 = do
       request p0 (GetBlockSize @Fake (fromString "81JeD7LNR6Q7RYfyWBxfjJn1RsWzvegkUXae6FUNgrMZ"))
       request p0 (GetBlockSize @Fake (fromString "5KP4vM6RuEX6RA1ywthBMqZV5UJDLANC17UrF6zuWdRt"))
 
+      -- request p1 (BlockGetAllChunks @Fake 0 (fromString "5KP4vM6RuEX6RA1ywthBMqZV5UJDLANC17UrF6zuWdRt"))
+
+      -- Я ЗАПРОСИЛ БЛОК
+      -- У МЕНЯ НЕТ КУКИ
+      -- МНЕ ПРИШЛИ ЧАНКИ
+      -- КУКИ НЕТ -> ГОВОРЮ "БЛОК ЛОСТ"
+      -- Q1: ЧТО ДЕЛАТЬ
+      -- Q1.1: КАК КУКА ПОПАДЁТ в то, где работает "adapter"
+      -- Q2: КАК ДЕЛАТЬ ЗАПРОСЫ
+      --
+      -- ОТСЮДА СЛЕДУЕТ: Cookie должны жить в Engine и быть там доступны
+      -- В монаде Response тоже должна быть кука
+      --
+      -- Как быть с тем, что кука может не поддерживаться подпортоколом?
+      -- Требовать HasCookie у всех?
+
     pause ( 0.5 :: Timeout 'Seconds)
 
     mapM_ cancel peerz
@@ -136,7 +245,7 @@ test1 = do
 
     debug (pretty $ show e)
     debug "we're done"
-    assertBool "sucess" True
+    assertBool "success" True
     exitSuccess
 
   assertBool "failed" False