diff --git a/test/prop_quic_types.hrl b/test/prop_quic_types.hrl
index 15323167..bd872958 100644
--- a/test/prop_quic_types.hrl
+++ b/test/prop_quic_types.hrl
@@ -61,14 +61,15 @@
     | {conn_acceptors, non_neg_integer()}
     | {settings, [quicer_setting()]}.
 
+-define(UINT32_MAX, 4294967295).
 -type quicer_setting() ::
     {max_bytes_per_key, uint64()}
     | {handshake_idle_timeout_ms, uint64()}
     | {idle_timeout_ms, uint64()}
     | {tls_client_max_send_buffer, uint32()}
     | {tls_server_max_send_buffer, uint32()}
-    | {stream_recv_window_default, uint32()}
-    | {stream_recv_buffer_default, uint32()}
+    | {stream_recv_window_default, 1..?UINT32_MAX}
+    | {stream_recv_buffer_default, 4096..?UINT32_MAX}
     | {conn_flow_control_window, uint32()}
     | {max_stateless_operations, uint32()}
     | {initial_window_packets, uint32()}
@@ -95,6 +96,40 @@
     | {max_binding_stateless_operations, uint16()}
     | {stateless_operation_expiration_ms, uint16()}.
 
+-type quicer_setting_with_range() ::
+    {max_bytes_per_key, 0..(4 bsl 34 - 1)}
+    | {handshake_idle_timeout_ms, 0..(1 bsl 62 - 1)}
+    | {idle_timeout_ms, 0..(1 bsl 62 - 1)}
+    | {tls_client_max_send_buffer, uint32()}
+    | {tls_server_max_send_buffer, uint32()}
+    | {stream_recv_window_default, 1..?UINT32_MAX}
+    | {stream_recv_buffer_default, 4096..?UINT32_MAX}
+    | {conn_flow_control_window, uint32()}
+    | {max_stateless_operations, uint32()}
+    | {initial_window_packets, uint32()}
+    | {send_idle_timeout_ms, uint32()}
+    | {initial_rtt_ms, 1..?UINT32_MAX}
+    | {max_ack_delay_ms, 1..(1 bsl 14 - 1)}
+    | {disconnect_timeout_ms, 1..600000}
+    | {keep_alive_interval_ms, uint32()}
+    | {congestion_control_algorithm, 0 | 1}
+    | {peer_bidi_stream_count, uint16()}
+    | {peer_unidi_stream_count, uint16()}
+    | {retry_memory_limit, uint16()}
+    | {load_balancing_mode, 0..2}
+    | {max_operations_per_drain, uint8()}
+    | {send_buffering_enabled, 0 | 1}
+    | {pacing_enabled, 0 | 1}
+    | {migration_enabled, 0 | 1}
+    | {datagram_receive_enabled, 0 | 1}
+    | {server_resumption_level, 0 | 1 | 2}
+    | {minimum_mtu, uint16()}
+    | {maximum_mtu, uint16()}
+    | {mtu_discovery_search_complete_timeout_us, uint64()}
+    | {mtu_discovery_missing_probe_count, uint8()}
+    | {max_binding_stateless_operations, uint16()}
+    | {stateless_operation_expiration_ms, uint16()}.
+
 -type quicer_conn_opts() :: [conn_opt()].
 -type conn_opt() ::
     {alpn, [string()]}
diff --git a/test/prop_stateful_server_conn.erl b/test/prop_stateful_server_conn.erl
index a5952ecc..b5056c24 100644
--- a/test/prop_stateful_server_conn.erl
+++ b/test/prop_stateful_server_conn.erl
@@ -95,6 +95,7 @@ initial_state() ->
 command(#{handle := Handle}) ->
     frequency([
         {200, {call, quicer, handshake, [Handle, 1000]}},
+        {100, {call, quicer, handshake, [Handle, valid_quicer_settings(), 1000]}},
         {100, {call, quicer, getopt, [Handle, ?LET({Opt, _}, conn_opt(), Opt)]}},
         {100,
             {call, quicer, async_accept_stream, [Handle, ?LET(Opts, quicer_acceptor_opts(), Opts)]}},
@@ -291,6 +292,9 @@ postcondition(#{handle := _H, state := _S}, {call, quicer, get_connections, _},
     true;
 postcondition(#{state := closed}, {call, _Mod, _Fun, _Args}, {error, closed}) ->
     true;
+%% postcondition(#{state := accepted}, {call, quicer, handshake, _Args}, {error, invalid_parameter}) ->
+%%     %% handshake with wrong args
+%%     true;
 postcondition(#{state := accepted}, {call, _Mod, _Fun, _Args}, {error, closed}) ->
     %% handshake didnt take place on time
     true;
@@ -327,6 +331,9 @@ step_calls(#{calls := Calls} = S) ->
     S#{calls := Calls + 1}.
 %%% Generators
 
+valid_quicer_settings() ->
+    quicer_prop_gen:valid_quicer_settings().
+
 %%%%%%%%%%%%%%%%%%%%%%%
 %%% Listener helper %%%
 %%%%%%%%%%%%%%%%%%%%%%%
diff --git a/test/quicer_prop_gen.erl b/test/quicer_prop_gen.erl
index c7e47930..a1750d7e 100644
--- a/test/quicer_prop_gen.erl
+++ b/test/quicer_prop_gen.erl
@@ -32,6 +32,7 @@
     valid_reg_handle/0,
     valid_handle/0,
     valid_csend_stream_opts/0,
+    valid_quicer_settings/0,
     pid/0,
     data/0,
     quicer_send_flags/0,
@@ -290,6 +291,20 @@ valid_csend_stream_opts() ->
         )
     ).
 
+%% @see msquic/src/core/settings.c
+valid_quicer_settings() ->
+    ?SUCHTHAT(
+        Opts,
+        ?LET(Q, list(quicer_setting_with_range()), Q),
+        %% Conds below from msquic/src/core/settings.c
+        quicer_setting_val_is_power_2(stream_recv_window_default, Opts) andalso
+            quicer_setting_val_is_power_2(stream_recv_window_bidi_local_default, Opts) andalso
+            quicer_setting_val_is_power_2(stream_recv_window_bidi_remote_default, Opts) andalso
+            quicer_setting_val_is_power_2(stream_recv_window_unidi_default, Opts) andalso
+            (proplists:get_value(maximum_mtu, Opts, 1500) >
+                proplists:get_value(minimum_mtu, Opts, 1248))
+    ).
+
 -spec ensure_dummy_listener(non_neg_integer()) -> _.
 ensure_dummy_listener(Port) ->
     case is_pid(whereis(?dummy_listener)) of
@@ -335,3 +350,11 @@ acceptor_loop(L) ->
         _ ->
             acceptor_loop(L)
     end.
+
+-spec quicer_setting_val_is_power_2(atom(), proplists:proplist()) -> boolean().
+quicer_setting_val_is_power_2(Key, Opts) ->
+    is_pow_2(maps:get(Key, maps:from_list(Opts), 2)).
+is_pow_2(N) when is_integer(N), N > 0 ->
+    (N band (N - 1)) == 0;
+is_pow_2(_) ->
+    false.