diff --git a/libs/main/io_devices/piethernet.cpp b/libs/main/io_devices/piethernet.cpp
index 8106921e..551529df 100644
--- a/libs/main/io_devices/piethernet.cpp
+++ b/libs/main/io_devices/piethernet.cpp
@@ -418,7 +418,10 @@ bool PIEthernet::closeDevice() {
 	closeSocket(sock_s);
 	while (!clients_.isEmpty())
 		delete clients_.back();
-	if (ned) disconnected(false);
+	if (ned) {
+		piCoutObj << "Disconnect on close";
+		disconnected(false);
+	}
 	return true;
 }
 
@@ -579,13 +582,14 @@ bool PIEthernet::connect(bool threaded) {
 #ifdef QNX
 	PRIVATE->addr_.sin_len = sizeof(PRIVATE->addr_);
 #endif
+	connecting_ = true;
 	connected_ = connectTCP();
+	connecting_ = false;
 	if (!connected_) {
 		piCoutObj << "Can`t connect to" << addr_r << "," << ethErrorString();
 	}
 	opened_ = connected_;
 	if (connected_) {
-		connecting_ = false;
 		connected();
 	}
 	return connected_;
@@ -728,7 +732,7 @@ ssize_t PIEthernet::readDevice(void * read_to, ssize_t max_size) {
 		errorClear();
 #ifdef WINDOWS
 		{
-		long wr = waitForEvent(FD_READ | FD_CLOSE);
+		long wr = waitForEvent(PRIVATE->event, FD_READ | FD_CLOSE);
 		switch (wr) {
 		case FD_READ:
 			//piCout << "fd_read ...";
@@ -760,7 +764,7 @@ ssize_t PIEthernet::readDevice(void * read_to, ssize_t max_size) {
 				return -1;
 			}
 			if (connected_) {
-				//piCoutObj << "Disconnect on read," << ethErrorString();
+				piCoutObj << "Disconnect on read," << ethErrorString();
 				opened_ = connected_ = false;
 				closeSocket(sock);
 				init();
@@ -777,7 +781,7 @@ ssize_t PIEthernet::readDevice(void * read_to, ssize_t max_size) {
 		memset(&PRIVATE->raddr_, 0, sizeof(PRIVATE->raddr_));
 		//piCoutObj << "read from" << path() << "...";
 #ifdef WINDOWS
-		long wr = waitForEvent(FD_READ | FD_CLOSE);
+		long wr = waitForEvent(PRIVATE->event, FD_READ | FD_CLOSE);
 		switch (wr) {
 		case FD_READ:
 			//piCout << "fd_read ...";
@@ -829,7 +833,7 @@ ssize_t PIEthernet::writeDevice(const void * data, ssize_t max_size) {
 #endif
 																								, (sockaddr * )&PRIVATE->saddr_, sizeof(PRIVATE->saddr_));
 		//piCout << "[PIEth] write to" << ip_s << ":" << port_s << "ok";
-	case TCP_Client:
+	case TCP_Client: {
 		if (connecting_) {
 			memset(&PRIVATE->addr_, 0, sizeof(PRIVATE->addr_));
 			addr_r.set(path());
@@ -850,15 +854,44 @@ ssize_t PIEthernet::writeDevice(const void * data, ssize_t max_size) {
 			}
 		}
 		if (!connected_) return -1;
-		ret = ::send(sock, (const char *)data, max_size, 0);
-		if (ret < 0) {
+		auto disconnectFunc = [this](){
 			piCoutObj << "Disconnect on write," << ethErrorString();
 			opened_ = connected_ = false;
 			closeSocket(sock);
 			init();
 			disconnected(true);
+		};
+		if (!isOptionSet(BlockingWrite)) {
+			ret = ::send(sock, (const char *)data, max_size, 0);
+			if (ret < 0) {
+				disconnectFunc();
+				return -1;
+			}
+		} else {
+			ssize_t remain_size = max_size;
+			const char * remain_data = (const char *)data;
+			while (remain_size > 0) {
+				int sr = ::send(sock, remain_data, remain_size, 0);
+				if (sr < 0) {
+					int err = ethErrorCore();
+#ifdef WINDOWS
+					if (err == WSAEWOULDBLOCK) {
+#else
+					if (err == EAGAIN || err == EWOULDBLOCK) {
+#endif
+						piMinSleep();
+						//piCoutObj << "wait for write";
+						continue;
+					} else {
+						disconnectFunc();
+						return -1;
+					}
+				}
+				remain_data += sr;
+				remain_size -= sr;
+			}
 		}
-		return ret;
+		return ret;}
 	default: break;
 	}
 	return -1;
@@ -897,7 +930,7 @@ void PIEthernet::server_func(void * eth) {
 	sockaddr_in client_addr;
 	socklen_t slen = sizeof(client_addr);
 #ifdef WINDOWS
-	long wr = ce->waitForEvent(FD_ACCEPT | FD_CLOSE);
+	long wr = ce->waitForEvent(ce->PRIVATEWB->event, FD_ACCEPT | FD_CLOSE);
 	if (wr != FD_ACCEPT) {
 		piMSleep(10);
 		return;
@@ -954,7 +987,7 @@ bool PIEthernet::connectTCP() {
 	::connect(sock, (sockaddr * )&(PRIVATE->addr_), sizeof(PRIVATE->addr_));
 	//piCout << errorString();
 #ifdef WINDOWS
-	long wr = waitForEvent(FD_CONNECT | FD_CLOSE);
+	long wr = waitForEvent(PRIVATE->event, FD_CONNECT | FD_CLOSE);
 	switch (wr) {
 	case FD_CONNECT:
 		//piCout << "fd_connect ...";
@@ -975,16 +1008,16 @@ bool PIEthernet::connectTCP() {
 
 
 #ifdef WINDOWS
-long PIEthernet::waitForEvent(long mask) {
-	if (!PRIVATE->event.isCreate() || sock < 0) return 0;
-	WSAEventSelect(sock, PRIVATE->event.getEvent(), mask);
-	if (PRIVATE->event.wait()) {
+long PIEthernet::waitForEvent(PIWaitEvent & event, long mask) {
+	if (!event.isCreate() || sock < 0) return 0;
+	WSAEventSelect(sock, event.getEvent(), mask);
+	if (event.wait()) {
 	//DWORD wr = WSAWaitForMultipleEvents(1, &(PRIVATE->read_event), FALSE, WSA_INFINITE, TRUE);
 	//piCout << "wait result" << wr;
 	//if (wr == WSA_WAIT_EVENT_0) {
 		WSANETWORKEVENTS events;
 		memset(&events, 0, sizeof(events));
-		WSAEnumNetworkEvents(sock, PRIVATE->event.getEvent(), &events);
+		WSAEnumNetworkEvents(sock, event.getEvent(), &events);
 		//piCout << "wait result" << events.lNetworkEvents;
 		return events.lNetworkEvents;
 	}
diff --git a/libs/main/io_devices/piethernet.h b/libs/main/io_devices/piethernet.h
index e4648874..06b2dbb9 100644
--- a/libs/main/io_devices/piethernet.h
+++ b/libs/main/io_devices/piethernet.h
@@ -503,7 +503,7 @@ private:
 	void setType(Type t, bool reopen = true);
 	bool connectTCP();
 #ifdef WINDOWS
-	long waitForEvent(long mask);
+	long waitForEvent(PIWaitEvent & event, long mask);
 #endif
 
 	static int ethErrorCore();
diff --git a/libs/main/io_devices/piserial.cpp b/libs/main/io_devices/piserial.cpp
index 79829a87..80bcd7b2 100644
--- a/libs/main/io_devices/piserial.cpp
+++ b/libs/main/io_devices/piserial.cpp
@@ -840,7 +840,7 @@ ssize_t PISerial::readDevice(void * read_to, ssize_t max_size) {
 		if (ret < 0) {
 			int err = errno;
 			if (err == EBADF || err == EFAULT || err == EINVAL || err == EIO) {
-				softStopThreadedRead();
+				stopThreadedRead();
 				close();
 				return 0;
 			}