diff --git a/main.cpp b/main.cpp
index ecc03777..1ec87b57 100644
--- a/main.cpp
+++ b/main.cpp
@@ -54,8 +54,8 @@ int main(int argc, char *argv[]) {
 	PIString s2;
 	s2 = PIString::fromUTF8(ba);
 	piCout << s2;*/
-	PIEthernet::Address a("127.1", -1);
-	piCout << a << PICoutManipulators::Hex << a.ip();
+	piCout << PIEthernet::Address::resolve("www.ya.ru:22");
+	piCout << PIEthernet::Address::resolve("www.ya.ru", 22);
 	return 0;
 }
 
diff --git a/src_main/io/piethernet.cpp b/src_main/io/piethernet.cpp
index 8686c5b5..16317bcc 100755
--- a/src_main/io/piethernet.cpp
+++ b/src_main/io/piethernet.cpp
@@ -162,34 +162,32 @@ void PIEthernet::Address::clear() {
 }
 
 
-PIString PIEthernet::Address::resolve(const PIString & host) {
-	PIString ip(host), port;
-	int i = host.find(':');
-	if (i >= 0) {
-		ip = host.left(i);
-		port = host.right(host.length() - i - 1);
-	}
-	PIString ret = PIStringAscii("0.0.0.0");
-	if (!port.isEmpty()) ret += PIStringAscii(":") + port;
-//#ifdef WINDOWS
-	hostent * he = gethostbyname(ip.dataAscii());
+bool PIEthernet::Address::isNull() const {
+	return (ip_ == 0) && (port_ == 0);
+}
+
+
+PIEthernet::Address PIEthernet::Address::resolve(const PIString & host_port) {
+	PIString host; int port(0);
+	splitIPPort(host_port, &host, &port);
+	return resolve(host, port);
+}
+
+
+PIEthernet::Address PIEthernet::Address::resolve(const PIString & host, ushort port) {
+	Address ret(0, port);
+	hostent * he = gethostbyname(host.dataAscii());
 	if (!he)
 		return ret;
-	struct in_addr addr;
-	if (he->h_addr_list[0]) {
-		addr.s_addr = *((uint*)(he->h_addr_list[0]));
-		ret = inet_ntoa(addr);
-		if (!port.isEmpty()) ret += PIStringAscii(":") + port;
-	}
-//#else
-//#endif
+	if (he->h_addr_list[0])
+		ret.setIP(*((uint*)(he->h_addr_list[0])));
 	return ret;
 }
 
 
 void PIEthernet::Address::splitIPPort(const PIString & ipp, PIString * _ip, int * _port) {
 	//piCout << "parse" << ipp;
-	int sp = ipp.find(":");
+	int sp = ipp.findLast(":");
 	if (_ip != 0) *_ip = (sp >= 0 ? ipp.left(sp) : ipp);
 	if (_port != 0 && sp >= 0) *_port = ipp.right(ipp.length() - ipp.find(":") - 1).toInt();
 }
@@ -288,7 +286,7 @@ bool PIEthernet::init() {
 	else
 		sock_s = sock;
 	if (sock == -1 || sock_s == -1) {
-		piCoutObj << "Can`t create socket, " << ethErrorString();
+		piCoutObj << "Can`t create socket," << ethErrorString();
 		return false;
 	}
 	if (params[PIEthernet::ReuseAddress]) ethSetsockoptBool(sock, SOL_SOCKET, SO_REUSEADDR);
@@ -377,7 +375,7 @@ bool PIEthernet::openDevice() {
 		tries++;
 	}
 	if (tries == 2) {
-		piCoutObj << "Can`t bind to " << addr_r << ", " << ethErrorString();
+		piCoutObj << "Can`t bind to" << addr_r << "," << ethErrorString();
 		return false;
 	}
 	opened_ = true;
@@ -496,7 +494,7 @@ bool PIEthernet::joinMulticastGroup(const PIString & group) {
 	//piCout << "join group" << group << "ip" << ip_ << "with index" << mreq.imr_ifindex << "socket" << sock;
 	mreq.imr_multiaddr.s_addr = inet_addr(group.dataAscii());
 	if (ethSetsockopt(sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq)) != 0) {
-		piCoutObj << "Can`t join multicast group " << group << ", " << ethErrorString();
+		piCoutObj << "Can`t join multicast group" << group << "," << ethErrorString();
 		return false;
 	}
 	if (params[PIEthernet::MulticastLoop]) ethSetsockoptInt(sock, IPPROTO_IP, IP_MULTICAST_LOOP);
@@ -536,7 +534,7 @@ bool PIEthernet::leaveMulticastGroup(const PIString & group) {
 	else mreq.imr_address.s_addr = addr_r.ip();
 	mreq.imr_multiaddr.s_addr = inet_addr(group.dataAscii());
 	if (ethSetsockopt(sock, IPPROTO_IP, IP_DROP_MEMBERSHIP, &mreq, sizeof(mreq)) == -1) {
-		piCoutObj << "Can`t leave multicast group " << group << ", " << ethErrorString();
+		piCoutObj << "Can`t leave multicast group" << group << "," << ethErrorString();
 		return false;
 	}
 	mcast_groups.removeAll(group);
@@ -597,11 +595,11 @@ bool PIEthernet::listen(bool threaded) {
 		tries++;
 	}
 	if (tries == 2) {
-		piCoutObj << "Can`t bind to " << addr_r << ", " << ethErrorString();
+		piCoutObj << "Can`t bind to" << addr_r << "," << ethErrorString();
 		return false;
 	}
 	if (::listen(sock, 64) == -1) {
-		piCoutObj << "Can`t listen on "<< addr_r << ", " << ethErrorString();
+		piCoutObj << "Can`t listen on"<< addr_r << "," << ethErrorString();
 		return false;
 	}
 	opened_ = server_bounded = true;
@@ -641,8 +639,8 @@ int PIEthernet::readDevice(void * read_to, int max_size) {
 			init();
 			qDebug() << "init() in read thread";*/
 #endif
-			memset(&PRIVATE->addr_, 0, sizeof(PRIVATE->addr_));
 			addr_r.set(path());
+			memset(&PRIVATE->addr_, 0, sizeof(PRIVATE->addr_));
 			PRIVATE->addr_.sin_port = htons(addr_r.port());
 			PRIVATE->addr_.sin_addr.s_addr = addr_r.ip();
 			PRIVATE->addr_.sin_family = AF_INET;
@@ -655,7 +653,7 @@ int PIEthernet::readDevice(void * read_to, int max_size) {
 			//piCoutObj << "connect to " << ip_ << ":" << port_ << connected_;
 			//qDebug() << "connect to " << ip_.data() << ":" << port_ << connected_;
 			if (!connected_)
-				piCoutObj << "Can`t connect to " << addr_r << ", " << ethErrorString();
+				piCoutObj << "Can`t connect to" << addr_r << "," << ethErrorString();
 			opened_ = connected_;
 			if (connected_) {
 				connecting_ = false;
@@ -769,7 +767,7 @@ int PIEthernet::writeDevice(const void * data, int max_size) {
 			//piCoutObj << "connect to " << ip << ":" << port_;
 			connected_ = (::connect(sock, (sockaddr * )&PRIVATE->addr_, sizeof(PRIVATE->addr_)) == 0);
 			if (!connected_)
-				piCoutObj << "Can`t connect to " << addr_r << ", " << ethErrorString();
+				piCoutObj << "Can`t connect to" << addr_r << "," << ethErrorString();
 			opened_ = connected_;
 			if (connected_) {
 				connecting_ = false;
@@ -823,7 +821,7 @@ void PIEthernet::server_func(void * eth) {
 			piMSleep(10);
 			return;
 		}
-		if (ce->debug()) piCout << "[PIEthernet] Can`t accept new connection, " << ethErrorString();
+		if (ce->debug()) piCout << "[PIEthernet] Can`t accept new connection," << ethErrorString();
 		piMSleep(10);
 		return;
 	}
@@ -950,7 +948,7 @@ PIEthernet::InterfaceList PIEthernet::interfaces() {
 			pAdapter = pAdapter->Next;
 		}
 	} else
-		piCout << "[PIEthernet] GetAdaptersInfo failed with error: " << ret;
+		piCout << "[PIEthernet] GetAdaptersInfo failed with error:" << ret;
 	if (pAdapterInfo)
 		HeapFree(GetProcessHeap(), 0, (pAdapterInfo));
 #else
diff --git a/src_main/io/piethernet.h b/src_main/io/piethernet.h
index 99b4885f..31c1e34e 100755
--- a/src_main/io/piethernet.h
+++ b/src_main/io/piethernet.h
@@ -62,30 +62,63 @@ public:
 	};
 
 
-	//! \brief IPv4 network address, ip and port
+	//! \brief IPv4 network address, IP and port
 	class Address {
 		friend class PIEthernet;
 		friend inline PIByteArray & operator <<(PIByteArray & s, const PIEthernet::Address & v);
 		friend inline PIByteArray & operator >>(PIByteArray & s, PIEthernet::Address & v);
 	public:
-		//! Contructs %Address with binary representation of ip and port
+
+		//! Contructs %Address with binary representation of IP and port
 		Address(uint ip = 0, ushort port = 0);
+
+		//! Contructs %Address with string representation "i.i.i.i:p"
 		Address(const PIString & ip_port);
+
+		//! Contructs %Address with IP string representation "i.i.i.i" and port
 		Address(const PIString & ip, ushort port);
+
+		//! Returns binary IP
 		uint ip() const {return ip_;}
+
+		//! Returns port
 		ushort port() const {return port_;}
+
+		//! Returns string IP
 		PIString ipString() const;
+
+		//! Returns string representation of IP and port "i.i.i.i:p"
 		PIString toString() const;
+
+		//! Set address IP
 		void setIP(uint ip);
+
+		//! Set address IP
 		void setIP(const PIString & ip);
+
+		//! Set address port
 		void setPort(ushort port);
+
+		//! Set address IP and port, "i.i.i.i:p"
 		void set(const PIString & ip_port);
+
+		//! Set address IP and port, "i.i.i.i"
 		void set(const PIString & ip, ushort port);
+
+		//! Set address binary IP and port
 		void set(uint ip, ushort port);
+
+		//! Set IP and port to 0
 		void clear();
 
-		//! Resolve hostname "host" and return it IPv4 address or "0.0.0.0" on error
-		static PIString resolve(const PIString & host);
+		//! Returns if IP and port is 0
+		bool isNull() const;
+
+		//! Resolve hostname "host:port" and return it address or null address on error
+		static Address resolve(const PIString & host_port);
+
+		//! Resolve hostname "host" with port "port" and return it address or null address on error
+		static Address resolve(const PIString & host, ushort port);
 
 		static void splitIPPort(const PIString & ipp, PIString * ip, int * port);
 	private:
@@ -227,6 +260,9 @@ public:
 	
 	//! Connect to TCP server with address "ip_port". Use only for TCP_Client
 	bool connect(const PIString & ip_port) {setPath(ip_port); return connect();}
+
+	//! Connect to TCP server with address "addr". Use only for TCP_Client
+	bool connect(const Address & addr) {setPath(addr.toString()); return connect();}
 	
 	//! Returns if %PIEthernet connected to TCP server. Use only for TCP_Client
 	bool isConnected() const {return connected_;}
@@ -244,6 +280,9 @@ public:
 	//! Start listen for incoming TCP connections on address "ip_port". Use only for TCP_Server
 	bool listen(const PIString & ip_port, bool threaded = false) {setReadAddress(ip_port); return listen(threaded);}
 
+	//! Start listen for incoming TCP connections on address "addr". Use only for TCP_Server
+	bool listen(const Address & addr, bool threaded = false) {setReadAddress(addr); return listen(threaded);}
+
 	PIEthernet * client(int index) {return clients_[index];}
 	int clientsCount() const {return clients_.size_s();}
 	PIVector<PIEthernet * > clients() const {return clients_;}