diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0b6751dc..f5a89d4b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,9 +2,9 @@ cmake_minimum_required(VERSION 3.0)
 cmake_policy(SET CMP0017 NEW) # need include() with .cmake
 project(pip)
 set(pip_MAJOR    2)
-set(pip_MINOR    21)
+set(pip_MINOR    22)
 set(pip_REVISION 0)
-set(pip_SUFFIX   alpha)
+set(pip_SUFFIX   )
 set(pip_COMPANY  SHS)
 set(pip_DOMAIN   org.SHS)
 
diff --git a/libs/cloud/picloudtcp.cpp b/libs/cloud/picloudtcp.cpp
index 97b8faac..b10f64eb 100644
--- a/libs/cloud/picloudtcp.cpp
+++ b/libs/cloud/picloudtcp.cpp
@@ -28,7 +28,7 @@ const char hash_def_key[] = "_picrypt_";
 
 
 PICloud::TCP::Header::Header() {
-	version = Version_1;
+	version = Version_2;
 }
 
 
@@ -42,15 +42,20 @@ void PICloud::TCP::setRole(PICloud::TCP::Role r) {
 
 
 void PICloud::TCP::setServerName(const PIString & server_name) {
-	sname = server_name;
+	suuid = PICrypt::hash(server_name);
 }
 
 
 void PICloud::TCP::sendStart() {
 	//piCout << "sendStart";
+	if (suuid.size() != PICrypt::sizeHash()) {
+		piCout << "PICloud ERROR, server not set, invoke setServerName first";
+		return;
+	}
 	header.type = PICloud::TCP::Connect;
 	PIByteArray ba;
-	ba << header << sname;
+	ba << header;
+	ba.append(suuid);
 	streampacker->send(ba);
 }
 
@@ -100,7 +105,7 @@ PIPair<PICloud::TCP::Type, PICloud::TCP::Role> PICloud::TCP::parseHeader(PIByteA
 	PICloud::TCP::Header hdr;
 	ba >> hdr;
 	if (hdr.version != header.version) {
-		piCout << "[PICloud]" << "invalid TCP version!";
+		piCout << "[PICloud]" << "invalid PICloud::TCP version!";
 		return ret;
 	}
 	ret.first = (Type)hdr.type;
@@ -128,10 +133,13 @@ PIPair<uint, PIByteArray> PICloud::TCP::parseDataServer(PIByteArray & ba) {
 }
 
 
-PIString PICloud::TCP::parseConnect_d(PIByteArray & ba) {
-	PIString ret;
-	ba >> ret;
-	return ret;
+PIByteArray PICloud::TCP::parseConnect_d(PIByteArray & ba) {
+	if (ba.size() != PICrypt::sizeHash()) {
+		piCout << "PICloud ERROR, invalid server uuid";
+		return PIByteArray();
+	} else {
+		return ba;
+	}
 }
 
 
diff --git a/libs/crypt/picrypt.cpp b/libs/crypt/picrypt.cpp
index 56ab0f29..1d15160a 100644
--- a/libs/crypt/picrypt.cpp
+++ b/libs/crypt/picrypt.cpp
@@ -169,6 +169,11 @@ PIByteArray PICrypt::hash(const PIByteArray & data) {
 }
 
 
+size_t PICrypt::sizeHash() {
+	return crypto_generichash_BYTES;
+}
+
+
 ullong PICrypt::shorthash(const PIString& s, PIByteArray key) {
 	ullong hash = 0;
 #ifdef PIP_CRYPT
diff --git a/libs/main/cloud/picloudtcp.h b/libs/main/cloud/picloudtcp.h
index ad255481..93cad83e 100644
--- a/libs/main/cloud/picloudtcp.h
+++ b/libs/main/cloud/picloudtcp.h
@@ -38,6 +38,7 @@ class PIP_CLOUD_EXPORT TCP {
 public:
 	enum Version {
 		Version_1 = 1,
+		Version_2 = 2,
 	};
 
 	enum Role {
@@ -66,7 +67,7 @@ public:
 	PIPair<PICloud::TCP::Type, PICloud::TCP::Role> parseHeader(PIByteArray & ba);
 	PIByteArray parseData(PIByteArray & ba);
 	PIPair<uint, PIByteArray> parseDataServer(PIByteArray & ba);
-	PIString parseConnect_d(PIByteArray & ba);
+	PIByteArray parseConnect_d(PIByteArray & ba);
 	uint parseConnect(PIByteArray & ba);
 	uint parseDisconnect(PIByteArray & ba);
 
@@ -79,7 +80,7 @@ private:
 	};
 
 	Header header;
-	PIString sname;
+	PIByteArray suuid;
 	PIStreamPacker * streampacker;
 };
 
diff --git a/libs/main/containers/pideque.h b/libs/main/containers/pideque.h
index 82d00b45..e2ebe89b 100644
--- a/libs/main/containers/pideque.h
+++ b/libs/main/containers/pideque.h
@@ -181,6 +181,12 @@ public:
 		return true;
 	}
 	inline bool operator !=(const PIDeque<T> & t) const {return !(*this == t);}
+	inline bool operator >(const PIDeque<T> & t) const {
+		if (pid_size != t.pid_size) return pid_size > t.pid_size;
+		for (size_t i = 0; i < pid_size; ++i)
+			if (t[i] != (*this)[i]) return t[i] > (*this)[i];
+		return false;
+	}
 	inline bool contains(const T & v) const {
 		for (size_t i = pid_start; i < pid_start + pid_size; ++i)
 			if (v == pid_data[i])
diff --git a/libs/main/crypt/picrypt.h b/libs/main/crypt/picrypt.h
index 67fe3a6b..e437951a 100644
--- a/libs/main/crypt/picrypt.h
+++ b/libs/main/crypt/picrypt.h
@@ -58,6 +58,9 @@ public:
 	//! Generate hash from bytearray
 	static PIByteArray hash(const PIByteArray & data);
 
+	//! Returns hash size
+	static size_t sizeHash();
+
 	//! Generate short hash from string "s", may be used for hash table
 	static ullong shorthash(const PIString & s, PIByteArray key = PIByteArray());
 
diff --git a/utils/cloud_dispatcher/cloudserver.cpp b/utils/cloud_dispatcher/cloudserver.cpp
index 3a25a7d0..d3c58aee 100644
--- a/utils/cloud_dispatcher/cloudserver.cpp
+++ b/utils/cloud_dispatcher/cloudserver.cpp
@@ -1,8 +1,8 @@
 #include "cloudserver.h"
 
-CloudServer::CloudServer(DispatcherClient * c, const PIString & sname) : server(c) {
-	setName(sname);
-	server_name = sname;
+CloudServer::CloudServer(DispatcherClient * c, const PIByteArray & sname) : server(c) {
+	setName(sname.toHex());
+	server_uuid = sname;
 	CONNECTL(c, dataReadedServer, ([this](uint id, PIByteArray & ba){
 		DispatcherClient * cl = index_clients.value(id, nullptr);
 		if (cl) cl->sendData(ba);
@@ -17,8 +17,8 @@ CloudServer::~CloudServer() {
 }
 
 
-PIString CloudServer::serverName() const {
-	return server_name;
+PIByteArray CloudServer::serverUUID() const {
+	return server_uuid;
 }
 
 
@@ -49,7 +49,7 @@ PIVector<DispatcherClient *> CloudServer::getClients() {
 
 
 void CloudServer::printStatus() {
-	piCout << "    " << "Clients for" << server->address() << server_name << ":";
+	piCout << "    " << "Clients for" << server->address() << server_uuid.toHex() << ":";
 	for (auto c: clients) {
 		piCout << "        " << c->address() << c->clientId();
 	}
diff --git a/utils/cloud_dispatcher/cloudserver.h b/utils/cloud_dispatcher/cloudserver.h
index 8b3864b9..14573a67 100644
--- a/utils/cloud_dispatcher/cloudserver.h
+++ b/utils/cloud_dispatcher/cloudserver.h
@@ -7,9 +7,9 @@
 class CloudServer : public PIObject {
 	PIOBJECT(CloudServer)
 public:
-	CloudServer(DispatcherClient * c, const PIString & sname);
+	CloudServer(DispatcherClient * c, const PIByteArray & sname);
 	~CloudServer();
-	PIString serverName() const;
+	PIByteArray serverUUID() const;
 	void addClient(DispatcherClient * c);
 	void removeClient(DispatcherClient * c);
 	PIVector<DispatcherClient*> getClients();
@@ -20,7 +20,7 @@ private:
 	DispatcherClient * server;
 	PIVector<DispatcherClient*> clients;
 	PIMap<uint, DispatcherClient*> index_clients;
-	PIString server_name;
+	PIByteArray server_uuid;
 };
 
 #endif // CLOUDSERVER_H
diff --git a/utils/cloud_dispatcher/dispatcherclient.cpp b/utils/cloud_dispatcher/dispatcherclient.cpp
index 289e6e1d..7e89d901 100644
--- a/utils/cloud_dispatcher/dispatcherclient.cpp
+++ b/utils/cloud_dispatcher/dispatcherclient.cpp
@@ -101,7 +101,7 @@ void DispatcherClient::readed(PIByteArray & ba) {
 		switch (hdr.first) {
 		case PICloud::TCP::Connect: {
 			tcp.setRole(hdr.second);
-			PIString sn = tcp.parseConnect_d(ba);
+			PIByteArray sn = tcp.parseConnect_d(ba);
 			if (hdr.second == PICloud::TCP::Server) registerServer(sn, this);
 			if (hdr.second == PICloud::TCP::Client) registerClient(sn, this);
 			return;}
diff --git a/utils/cloud_dispatcher/dispatcherclient.h b/utils/cloud_dispatcher/dispatcherclient.h
index 3b4dd1c2..7cb9629e 100644
--- a/utils/cloud_dispatcher/dispatcherclient.h
+++ b/utils/cloud_dispatcher/dispatcherclient.h
@@ -23,8 +23,8 @@ public:
 	PIString address();
 	uint clientId() const {return client_id;}
 	EVENT1(disconnectEvent, DispatcherClient *, client)
-	EVENT2(registerServer, PIString, sname, DispatcherClient *, client)
-	EVENT2(registerClient, PIString, sname, DispatcherClient *, client)
+	EVENT2(registerServer, const PIByteArray &, sname, DispatcherClient *, client)
+	EVENT2(registerClient, const PIByteArray &, sname, DispatcherClient *, client)
 	EVENT1(dataReaded, PIByteArray &, ba)
 	EVENT2(dataReadedServer, uint, id, PIByteArray &, ba)
 
diff --git a/utils/cloud_dispatcher/dispatcherserver.cpp b/utils/cloud_dispatcher/dispatcherserver.cpp
index d161e62c..cdf79ecd 100644
--- a/utils/cloud_dispatcher/dispatcherserver.cpp
+++ b/utils/cloud_dispatcher/dispatcherserver.cpp
@@ -70,12 +70,12 @@ void DispatcherServer::updateConnectionsTile(TileList * tl) {
 		case PICloud::TCP::Client : {
 			role = "Client";
 			CloudServer * cs = index_c_clients.value(c, nullptr);
-			if (cs) role += " \"" + cs->serverName() + "\"";
+			if (cs) role += " \"" + cs->serverUUID().toHex().left(8) + "...\"";
 		} break;
 		case PICloud::TCP::Server : {
 			role = "Server";
 			CloudServer * cs = index_c_servers.value(c, nullptr);
-			if (cs) role += " \"" + cs->serverName() + "\"";
+			if (cs) role += " \"" + cs->serverUUID().toHex().left(8) + "...\"";
 		} break;
 		default:
 		break;
@@ -91,7 +91,7 @@ void DispatcherServer::updateServersTile(TileList * tl, PISet<const DispatcherCl
 	tl->content.clear();
 	auto mi = c_servers.makeIterator();
 	while (mi.next()) {
-		tl->content << TileList::Row(mi.value()->serverName() + " - " + PIString::fromNumber(mi.value()->getClients().size()), PIScreenTypes::CellFormat());
+		tl->content << TileList::Row(mi.value()->serverUUID().toHex().left(8) + "... - " + PIString::fromNumber(mi.value()->getClients().size()), PIScreenTypes::CellFormat());
 		if (servers.contains(mi.value()->getConnection())) tl->selected << (tl->content.size_s() - 1);
 	}
 	map_mutex.unlock();
@@ -167,7 +167,7 @@ void  DispatcherServer::disconnectClient(DispatcherClient *client) {
 			csc->close();
 			csc->deleteLater();
 		}
-		c_servers.remove(cs->serverName());
+		c_servers.remove(cs->serverUUID());
 		index_c_servers.removeOne(client);
 		delete cs;
 	}
@@ -185,13 +185,13 @@ void  DispatcherServer::disconnectClient(DispatcherClient *client) {
 void DispatcherServer::newConnection(PIEthernet *cl) {
 	DispatcherClient * client = new DispatcherClient(cl, client_gid++);
 	CONNECTU(client, disconnectEvent, this, disconnectClient);
-	CONNECTL(client, registerServer, [this](PIString sname, DispatcherClient * c){
+	CONNECTL(client, registerServer, [this](const PIByteArray & sname, DispatcherClient * c){
 		map_mutex.lock();
 		CloudServer * cs = c_servers.value(sname, nullptr);
 		if (cs) {
 			rm_clients << c;
 		} else {
-			piCoutObj << "add new Server ->" << sname;
+			piCoutObj << "add new Server ->" << sname.toHex();
 			CloudServer * cs = new CloudServer(c, sname);
 			c_servers.insert(sname, cs);
 			index_c_servers.insert(c, cs);
@@ -199,11 +199,11 @@ void DispatcherServer::newConnection(PIEthernet *cl) {
 		}
 		map_mutex.unlock();
 	});
-	CONNECTL(client, registerClient, [this](PIString sname, DispatcherClient * c){
+	CONNECTL(client, registerClient, [this](const PIByteArray & sname, DispatcherClient * c){
 		map_mutex.lock();
 		CloudServer * cs = c_servers.value(sname, nullptr);
 		if (cs) {
-			piCoutObj << "add new Client to Server ->" << sname;
+			piCoutObj << "add new Client to Server ->" << sname.toHex();
 			cs->addClient(c);
 			index_c_clients.insert(c, cs);
 			c->authorise(true);
diff --git a/utils/cloud_dispatcher/dispatcherserver.h b/utils/cloud_dispatcher/dispatcherserver.h
index b8320fd6..1ac53897 100644
--- a/utils/cloud_dispatcher/dispatcherserver.h
+++ b/utils/cloud_dispatcher/dispatcherserver.h
@@ -28,7 +28,7 @@ private:
 
 	PIEthernet eth;
 	PIVector<DispatcherClient*> clients;
-	PIMap<PIString, CloudServer *> c_servers;
+	PIMap<PIByteArray, CloudServer *> c_servers;
 	PIMap<const DispatcherClient *, CloudServer *> index_c_servers;
 	PIMap<const DispatcherClient *, CloudServer *> index_c_clients;
 	PIVector<DispatcherClient*> rm_clients;