diff --git a/ngc_ft1.cpp b/ngc_ft1.cpp
index ed34f9e..0583b50 100644
--- a/ngc_ft1.cpp
+++ b/ngc_ft1.cpp
@@ -19,16 +19,16 @@ struct NGC_FT1 {
 			struct RecvTransfer {
 				std::vector<uint8_t> file_id;
 
-				//enum class State {
-					//INIT_SENT,
-					//SENDING,
-				//} state;
+				enum class State {
+					INITED, //init acked, but no data received yet (might be dropped)
+					RECV, // receiving data
+				} state;
 
 				// float time_since_last_activity ?
 				size_t file_size {0};
 				size_t file_size_current {0};
 
-				// sequenz array
+				// sequence array
 				// list of last x received seq_ids
 			};
 			std::array<std::optional<RecvTransfer>, 256> recv_transfers;
@@ -38,15 +38,23 @@ struct NGC_FT1 {
 				std::vector<uint8_t> file_id;
 
 				enum class State {
-					INIT_SENT,
-					SENDING,
+					INIT_SENT, // keep this state until ack or deny or giveup
+
+					SENDING, // we got the ack and are now sending data
+
+					// is this real?
+					FINISHING, // we sent all data but acks still outstanding????
+
+					FINFIN, // we sent the data_fin and are waiting for the data_fin_ack
+
+					// delete
 				} state;
 
 				// float time_since_last_activity ?
 				size_t file_size {0};
 				size_t file_size_current {0};
 
-				// sequenz array
+				// sequence array
 				// list of sent but not acked seq_ids
 			};
 			std::array<std::optional<SendTransfer>, 256> send_transfers;
@@ -57,6 +65,17 @@ struct NGC_FT1 {
 	std::map<uint32_t, Group> groups;
 };
 
+// send pkgs
+static bool _send_pkg_FT1_REQUEST(const Tox* tox, uint32_t group_number, uint32_t peer_number, uint8_t file_kind, const uint8_t* file_id, size_t file_id_size);
+static bool _send_pkg_FT1_INIT(const Tox* tox, uint32_t group_number, uint32_t peer_number, uint8_t file_kind, uint64_t file_size, uint8_t transfer_id, const uint8_t* file_id, size_t file_id_size);
+static bool _send_pkg_FT1_INIT_ACK(const Tox* tox, uint32_t group_number, uint32_t peer_number, uint8_t transfer_id);
+
+static bool _send_pkg_FT1_DATA(const Tox* tox, uint32_t group_number, uint32_t peer_number, uint8_t transfer_id);
+static bool _send_pkg_FT1_DATA_ACK(const Tox* tox, uint32_t group_number, uint32_t peer_number, uint8_t transfer_id);
+static bool _send_pkg_FT1_DATA_FIN(const Tox* tox, uint32_t group_number, uint32_t peer_number, uint8_t transfer_id);
+static bool _send_pkg_FT1_DATA_FIN_ACK(const Tox* tox, uint32_t group_number, uint32_t peer_number, uint8_t transfer_id);
+
+// handle pkgs
 static void _handle_FT1_REQUEST(Tox* tox, NGC_EXT_CTX* ngc_ext_ctx, uint32_t group_number, uint32_t peer_number, const uint8_t *data, size_t length);
 static void _handle_FT1_INIT(Tox* tox, NGC_EXT_CTX* ngc_ext_ctx, uint32_t group_number, uint32_t peer_number, const uint8_t *data, size_t length);
 //static void _handle_FT1_INIT_ACK(Tox* tox, NGC_EXT_CTX* ngc_ext_ctx, uint32_t group_number, uint32_t peer_number, const uint8_t *data, size_t length);
@@ -124,18 +143,7 @@ void NGC_FT1_send_request_private(
 
 	// record locally that we sent(or want to send) the request?
 
-	// - 1 byte packet id
-	// - 1 byte (TODO: more?) file_kind
-	// - X bytes file_id
-	std::vector<uint8_t> pkg;
-	pkg.push_back(FT1_REQUEST);
-	pkg.push_back(file_kind);
-	for (size_t i = 0; i < file_id_size; i++) {
-		pkg.push_back(file_id[i]);
-	}
-
-	// lossless
-	tox_group_send_custom_private_packet(tox, group_number, peer_number, true, pkg.data(), pkg.size(), nullptr);
+	_send_pkg_FT1_REQUEST(tox, group_number, peer_number, file_kind, file_id, file_id_size);
 }
 
 void NGC_FT1_register_callback_recv_request(NGC_EXT_CTX* ngc_ext_ctx, NGC_FT1_file_kind file_kind, NGC_FT1_recv_request_cb* callback) {
@@ -145,6 +153,7 @@ void NGC_FT1_register_callback_recv_request(NGC_EXT_CTX* ngc_ext_ctx, NGC_FT1_fi
 	ngc_ext_ctx->ngc_ft1_ctx->cb_request[file_kind] = callback;
 }
 
+
 bool NGC_FT1_send_init_private(
 	Tox *tox, NGC_EXT_CTX* ngc_ext_ctx,
 	uint32_t group_number, uint32_t peer_number,
@@ -185,25 +194,7 @@ bool NGC_FT1_send_init_private(
 		}
 	}
 
-	// - 1 byte packet id
-	// - 1 byte (file_kind)
-	// - 8 bytes (data size)
-	// - 1 byte (temporary_file_tf_id, for this peer only, technically just a prefix to distinguish between simultainious fts)
-	// - X bytes (file_kind dependent id, differnt sizes)
-
-	std::vector<uint8_t> pkg;
-	pkg.push_back(FT1_INIT);
-	pkg.push_back(file_kind);
-	for (size_t i = 0; i < sizeof(file_size); i++) {
-		pkg.push_back((file_size>>i) & 0xff);
-	}
-	pkg.push_back(idx);
-	for (size_t i = 0; i < file_id_size; i++) {
-		pkg.push_back(file_id[i]);
-	}
-
-	// lossless
-	tox_group_send_custom_private_packet(tox, group_number, peer_number, true, pkg.data(), pkg.size(), nullptr);
+	_send_pkg_FT1_INIT(tox, group_number, peer_number, file_kind, file_size, idx, file_id, file_id_size);
 
 	peer.send_transfers[idx] = NGC_FT1::Group::Peer::SendTransfer{
 		std::vector(file_id, file_id+file_id_size),
@@ -222,6 +213,55 @@ void NGC_FT1_register_callback_recv_init(NGC_EXT_CTX* ngc_ext_ctx, NGC_FT1_file_
 	ngc_ext_ctx->ngc_ft1_ctx->cb_init[file_kind] = callback;
 }
 
+static bool _send_pkg_FT1_REQUEST(const Tox* tox, uint32_t group_number, uint32_t peer_number, uint8_t file_kind, const uint8_t* file_id, size_t file_id_size) {
+	// - 1 byte packet id
+	// - 1 byte (TODO: more?) file_kind
+	// - X bytes file_id
+	std::vector<uint8_t> pkg;
+	pkg.push_back(FT1_REQUEST);
+	pkg.push_back(file_kind);
+	for (size_t i = 0; i < file_id_size; i++) {
+		pkg.push_back(file_id[i]);
+	}
+
+	// lossless
+	return tox_group_send_custom_private_packet(tox, group_number, peer_number, true, pkg.data(), pkg.size(), nullptr);
+}
+
+static bool _send_pkg_FT1_INIT(const Tox* tox, uint32_t group_number, uint32_t peer_number, uint8_t file_kind, uint64_t file_size, uint8_t transfer_id, const uint8_t* file_id, size_t file_id_size) {
+	// - 1 byte packet id
+	// - 1 byte (file_kind)
+	// - 8 bytes (data size)
+	// - 1 byte (temporary_file_tf_id, for this peer only, technically just a prefix to distinguish between simultainious fts)
+	// - X bytes (file_kind dependent id, differnt sizes)
+
+	std::vector<uint8_t> pkg;
+	pkg.push_back(FT1_INIT);
+	pkg.push_back(file_kind);
+	for (size_t i = 0; i < sizeof(file_size); i++) {
+		pkg.push_back((file_size>>i) & 0xff);
+	}
+	pkg.push_back(transfer_id);
+	for (size_t i = 0; i < file_id_size; i++) {
+		pkg.push_back(file_id[i]);
+	}
+
+	// lossless
+	return tox_group_send_custom_private_packet(tox, group_number, peer_number, true, pkg.data(), pkg.size(), nullptr);
+}
+
+static bool _send_pkg_FT1_INIT_ACK(const Tox* tox, uint32_t group_number, uint32_t peer_number, uint8_t transfer_id) {
+	// send ack
+	// - 1 byte packet id
+	// - 1 byte transfer_id
+	std::vector<uint8_t> pkg;
+	pkg.push_back(FT1_INIT_ACK);
+	pkg.push_back(transfer_id);
+
+	// lossless
+	return tox_group_send_custom_private_packet(tox, group_number, peer_number, true, pkg.data(), pkg.size(), nullptr);
+}
+
 #define _DATA_HAVE(x, error) if ((length - curser) < (x)) { error; }
 
 static void _handle_FT1_REQUEST(
@@ -259,6 +299,7 @@ static void _handle_FT1_REQUEST(
 	}
 }
 
+
 static void _handle_FT1_INIT(
 	Tox* tox,
 	NGC_EXT_CTX* ngc_ext_ctx,
@@ -316,16 +357,7 @@ static void _handle_FT1_INIT(
 	}
 
 	if (accept_ft) {
-		// send ack
-		// - 1 byte packet id
-		// - 1 byte transfer_id
-		std::vector<uint8_t> pkg;
-		pkg.push_back(FT1_INIT_ACK);
-		pkg.push_back(transfer_id);
-
-		// lossless
-		tox_group_send_custom_private_packet(tox, group_number, peer_number, true, pkg.data(), pkg.size(), nullptr);
-
+		_send_pkg_FT1_INIT_ACK(tox, group_number, peer_number, transfer_id);
 		fprintf(stderr, "accepted init\n");
 	} else {
 		// TODO deny?