2022-11-10 16:16:08 +03:00
36 changed files with 1028 additions and 357 deletions
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -492,6 +492,8 @@ if (NOT CROSSTOOLS)
 			#target_link_libraries(pip_plugin pip)
 			add_executable(pip_test "main.cpp")
 			target_link_libraries(pip_test pip)
+			add_executable(pip_cloud_test "main_picloud_test.cpp")
+			target_link_libraries(pip_cloud_test pip_cloud)
 		endif()

 	else()
--- a/libs/cloud/picloudclient.cpp
+++ b/libs/cloud/picloudclient.cpp
@@ -33,28 +33,22 @@ PICloudClient::PICloudClient(const PIString & path, PIIODevice::DeviceMode mode)
 		if (is_deleted) return;
 		bool need_disconn = is_connected;
 		//piCoutObj << "eth disconnected";
-		eth.softStopThreadedRead();
+		eth.stop();
 		opened_ = false;
 		internalDisconnect();
-		if (need_disconn)
-			disconnected();
+		if (need_disconn) disconnected();
 		//piCoutObj << "eth disconnected done";
 	});
 }


 PICloudClient::~PICloudClient() {
-	//piCoutObj << "~PICloudClient()";
-	softStopThreadedRead();
-	//eth.close();
-	//if (is_connected) disconnected();
-	close();
-	//piCoutObj << "~PICloudClient() closed";
-	internalDisconnect();
-//	stop(false);
+	//piCoutObj << "~PICloudClient() ..." << this;
 	is_deleted = true;
+	stopAndWait();
+	close();
 	internalDisconnect();
-	//piCoutObj << "~PICloudClient() done";
+	//piCoutObj << "~PICloudClient() done" << this;
 }


@@ -69,6 +63,12 @@ void PICloudClient::setKeepConnection(bool on) {
 }


+void PICloudClient::interrupt() {
+	cond_buff.notifyOne();
+	cond_connect.notifyOne();
+}
+
+
 bool PICloudClient::openDevice() {
 	//piCoutObj << "open";// << path();
 	bool op = eth.connect(PIEthernet::Address::resolve(path()), false);
@@ -81,7 +81,7 @@ bool PICloudClient::openDevice() {
 		mutex_connect.unlock();
 		if (!conn_ok) {
 			mutex_connect.lock();
-			eth.stop();
+			eth.stopAndWait();
 			eth.close();
 			mutex_connect.unlock();
 		}
@@ -98,41 +98,44 @@ bool PICloudClient::closeDevice() {
 	if (is_connected) {
 		internalDisconnect();
 	}
-	eth.stop();
+	eth.stopAndWait();
 	eth.close();
 	return true;
 }


 ssize_t PICloudClient::readDevice(void * read_to, ssize_t max_size) {
-	if (is_deleted) return -1;
-	//piCoutObj << "readDevice";
-	reading_now = true;
+	if (is_deleted || max_size <= 0) return -1;
+	//piCoutObj << "readDevice ...";
 	if (!is_connected && eth.isClosed()) openDevice();
 	ssize_t sz = -1;
 	mutex_buff.lock();
-	cond_buff.wait(mutex_buff, [this](){return !buff.isEmpty() || !is_connected;});
 	if (is_connected) {
-		sz = piMini(max_size, buff.size());
-		memcpy(read_to, buff.data(), sz);
-		buff.remove(0, sz);
+		if (buff.isEmpty()) {
+			sz = 0;
+		} else {
+			sz = piMin<ssize_t>(max_size, buff.size_s());
+			memcpy(read_to, buff.data(), sz);
+			buff.remove(0, sz);
+		}
+		if (sz == 0) cond_buff.wait(mutex_buff);
 	}
 	mutex_buff.unlock();
 	if (!is_connected) opened_ = false;
-	reading_now = false;
 	//piCoutObj << "readDevice done" << sz;
 	return sz;
 }


 ssize_t PICloudClient::writeDevice(const void * data, ssize_t size) {
-	if (is_deleted) return -1;
-//	piCoutObj << "writeDevice";
+	if (is_deleted || !is_connected) return -1;
+	//piCoutObj << "writeDevice" << size;
 	return tcp.sendData(PIByteArray(data, size));
 }


 void PICloudClient::internalDisconnect() {
+	//piCoutObj << "internalDisconnect";
 	is_connected = false;
 	cond_buff.notifyOne();
 	cond_connect.notifyOne();
@@ -157,13 +160,18 @@ void PICloudClient::_readed(PIByteArray & ba) {
 			}
 		break;
 		case PICloud::TCP::Disconnect:
-			eth.softStopThreadedRead();
+			eth.stop();
 			opened_ = false;
 			eth.close();
 		break;
 		case PICloud::TCP::Data:
 			if (is_connected) {
 				mutex_buff.lock();
+				if (buff.size_s() > threadedReadBufferSize()) {
+					piCoutObj << "Error: buffer overflow, drop" << ba.size() << "bytes";
+					mutex_buff.unlock();
+					return;
+				}
 				buff.append(ba);
 				mutex_buff.unlock();
 				cond_buff.notifyOne();
@@ -174,7 +182,6 @@ void PICloudClient::_readed(PIByteArray & ba) {
 		}
 		//piCoutObj << "readed" << ba.toHex();
 	}
-	while (buff.size_s() > threadedReadBufferSize()) piMSleep(100); // FIXME: sleep here is bad
+	if (buff.size_s() > threadedReadBufferSize()) piMSleep(100); // FIXME: sleep here is bad
 	//piCoutObj << "_readed done";
 }
-
--- a/libs/cloud/picloudserver.cpp
+++ b/libs/cloud/picloudserver.cpp
@@ -25,13 +25,22 @@ PICloudServer::PICloudServer(const PIString & path, PIIODevice::DeviceMode mode)
 	tcp.setRole(PICloud::TCP::Server);
 	tcp.setServerName(server_name);
 	setName("cloud_server__" + server_name);
+	is_deleted = false;
+	eth.setReopenEnabled(false);
 	CONNECT1(void, PIByteArray, &streampacker, packetReceiveEvent, this, _readed);
-	CONNECTL(&eth, connected, [this](){opened_ = true; piCoutObj << "connected"; tcp.sendStart();});
+	CONNECTL(&eth, connected, [this](){
+		opened_ = true;
+		//piCoutObj << "connected" << &eth;
+		tcp.sendStart();
+	});
 	CONNECTL(&eth, disconnected, [this](bool){
-		piCoutObj << "disconnected";
-		eth.softStopThreadedRead();
+		if (is_deleted) return;
+		//piCoutObj << "disconnected" << &eth;
+		for (auto c : clients_) {
+			delete c;
+		}
 		opened_ = false;
-		ping_timer.stop(false);
+		ping_timer.stop();
 		piMSleep(100);
 	});
 	CONNECTL(&ping_timer, tickEvent, [this] (void *, int){
@@ -41,8 +50,13 @@ PICloudServer::PICloudServer(const PIString & path, PIIODevice::DeviceMode mode)


 PICloudServer::~PICloudServer() {
+	//piCoutObj << "~PICloudServer ..." << this;
+	is_deleted = true;
 	stop();
 	close();
+	//piCout << "wait";
+	waitThreadedReadFinished();
+	//piCoutObj << "~PICloudServer done" << this;
 }


@@ -65,35 +79,32 @@ bool PICloudServer::openDevice() {
 		eth.startThreadedRead();
 		ping_timer.start(5000);
 		return true;
+	} else {
+		ping_timer.stop();
+		eth.close();
+		return false;
 	}
-	ping_timer.stop(false);
-	eth.close();
-	return false;
 }


 bool PICloudServer::closeDevice() {
-	eth.stop();
-	ping_timer.stop(false);
-	clients_mutex.lock();
-	for (auto c : clients_) {
-		c->close();
-		c->stop();
-	}
-	clients_mutex.unlock();
+	//piCoutObj << "closeDevice" << this;
+	eth.stopAndWait();
+	ping_timer.stop();
 	eth.close();
-	for (auto c : clients_)
+	for (auto c : clients_) {
 		delete c;
+	}
+	clients_.clear();
 	return true;
 }


 ssize_t PICloudServer::readDevice(void * read_to, ssize_t max_size) {
+	if (is_deleted) return -1;
 	//piCoutObj << "readDevice";
-	reading_now = true;
 	if (!opened_) openDevice();
-	else piMSleep(eth.readTimeout());
-	reading_now = false;
+	//else piMSleep(eth.readTimeout());
 	return -1;
 }

@@ -104,12 +115,18 @@ ssize_t PICloudServer::writeDevice(const void * data, ssize_t max_size) {
 }


+void PICloudServer::interrupt() {
+	eth.interrupt();
+}
+
+
 void PICloudServer::clientDisconnect(uint client_id) {
 	tcp.sendDisconnected(client_id);
 }


 int PICloudServer::sendData(const PIByteArray & data, uint client_id) {
+	if (!opened_) return -1;
 	return tcp.sendData(data, client_id);
 }

@@ -122,12 +139,10 @@ PICloudServer::Client::Client(PICloudServer * srv, uint id) : server(srv), clien


 PICloudServer::Client::~Client() {
-	if (is_connected) {
-		is_connected = false;
-		cond_buff.notifyOne();
-	}
+	//piCoutObj << "~PICloudServer::Client..." << this;
 	close();
-	stop();
+	stopAndWait();
+	//piCoutObj << "~PICloudServer::Client done" << this;
 }


@@ -137,7 +152,7 @@ bool PICloudServer::Client::openDevice() {


 bool PICloudServer::Client::closeDevice() {
-	softStopThreadedRead();
+	//piCoutObj << "closeDevice" << this;
 	if (is_connected) {
 		server->clientDisconnect(client_id);
 		is_connected = false;
@@ -151,11 +166,15 @@ ssize_t PICloudServer::Client::readDevice(void * read_to, ssize_t max_size) {
 	if (!is_connected) return -1;
 	ssize_t sz = -1;
 	mutex_buff.lock();
-	cond_buff.wait(mutex_buff, [this](){return !buff.isEmpty() || !is_connected;});
 	if (is_connected) {
-		sz = piMini(max_size, buff.size());
-		memcpy(read_to, buff.data(), sz);
-		buff.remove(0, sz);
+		if (buff.isEmpty()) {
+			sz = 0;
+		} else {
+			sz = piMini(max_size, buff.size());
+			memcpy(read_to, buff.data(), sz);
+			buff.remove(0, sz);
+		}
+		if (sz == 0) cond_buff.wait(mutex_buff);
 	}
 	mutex_buff.unlock();
 	return sz;
@@ -163,21 +182,32 @@ ssize_t PICloudServer::Client::readDevice(void * read_to, ssize_t max_size) {


 ssize_t PICloudServer::Client::writeDevice(const void * data, ssize_t size) {
+	if (!is_connected) return -1;
 	return server->sendData(PIByteArray(data, size), client_id);
 }


+void PICloudServer::Client::interrupt() {
+	cond_buff.notifyOne();
+}
+
+
 void PICloudServer::Client::pushBuffer(const PIByteArray & ba) {
 	if (!is_connected) return;
 	mutex_buff.lock();
+	if (buff.size_s() > threadedReadBufferSize()) {
+		piCoutObj << "Error: buffer overflow, drop" << ba.size() << "bytes";
+		mutex_buff.unlock();
+		return;
+	}
 	buff.append(ba);
 	cond_buff.notifyOne();
 	mutex_buff.unlock();
-	while (buff.size_s() > threadedReadBufferSize()) piMSleep(100); // FIXME: sleep here is bad
 }


 void PICloudServer::_readed(PIByteArray & ba) {
+	if (is_deleted) return;
 	PIPair<PICloud::TCP::Type, PICloud::TCP::Role> hdr = tcp.parseHeader(ba);
 	if (hdr.second == tcp.role()) {
 		switch (hdr.first) {
@@ -189,8 +219,8 @@ void PICloudServer::_readed(PIByteArray & ba) {
 			if (oc) {
 				tcp.sendDisconnected(id);
 			} else {
-				//piCoutObj << "new Client" << id;
 				Client * c = new Client(this, id);
+				//piCoutObj << "new Client" << id << c;
 				CONNECT1(void, PIObject *, c, deleted, this, clientDeleted);
 				clients_mutex.lock();
 				clients_ << c;
@@ -206,8 +236,9 @@ void PICloudServer::_readed(PIByteArray & ba) {
 			Client * oc = index_clients.value(id, nullptr);
 			clients_mutex.unlock();
 			if (oc) {
+				oc->stopAndWait();
 				oc->is_connected = false;
-				oc->close();
+				delete oc;
 			}
 			} break;
 		case PICloud::TCP::Data: {
@@ -215,7 +246,7 @@ void PICloudServer::_readed(PIByteArray & ba) {
 			clients_mutex.lock();
 			Client * oc = index_clients.value(d.first, nullptr);
 			clients_mutex.unlock();
-			//piCoutObj << "data for" << d.first << d.second.toHex();
+			//piCoutObj << "data for" << d.first << d.second.size();
 			if (oc && !d.second.isEmpty()) oc->pushBuffer(d.second);
 			} break;
 		default: break;
@@ -226,11 +257,11 @@ void PICloudServer::_readed(PIByteArray & ba) {

 void PICloudServer::clientDeleted(PIObject * o) {
 	PICloudServer::Client * c = (PICloudServer::Client*)o;
+	//piCoutObj << "clientDeleted" << c;
 	clients_mutex.lock();
 	clients_.removeOne(c);
 	auto it = index_clients.makeIterator();
-	while (it.hasNext()) {
-		it.next();
+	while (it.next()) {
 		if (it.value() == c) {
 			index_clients.remove(it.key());
 			break;
--- a/libs/console/piscreen.cpp
+++ b/libs/console/piscreen.cpp
@@ -588,7 +588,7 @@ void PIScreen::waitForFinish() {


 void PIScreen::stop(bool clear) {
-	PIThread::stop(true);
+	PIThread::stopAndWait();
 	if (clear) console.clearScreen();
 #ifndef WINDOWS
 	fflush(0);
--- a/libs/main/cloud/picloudclient.h
+++ b/libs/main/cloud/picloudclient.h
@@ -43,6 +43,7 @@ public:
 	void setKeepConnection(bool on);
 	bool isConnected() const {return is_connected;}
 	ssize_t bytesAvailable() const override {return buff.size();}
+	void interrupt() override;

 	EVENT(connected);
 	EVENT(disconnected);
@@ -65,6 +66,7 @@ private:
 	PIConditionVariable cond_connect;
 	std::atomic_bool is_connected;
 	std::atomic_bool is_deleted;
+
 };

 #endif // PICLOUDCLIENT_H
--- a/libs/main/cloud/picloudserver.h
+++ b/libs/main/cloud/picloudserver.h
@@ -51,6 +51,7 @@ public:
 		ssize_t writeDevice(const void * data, ssize_t size) override;
 		DeviceInfoFlags deviceInfoFlags() const override {return PIIODevice::Reliable;}
 		ssize_t bytesAvailable() const override {return buff.size();}
+		void interrupt() override;

 	private:
 		void pushBuffer(const PIByteArray & ba);
@@ -73,6 +74,7 @@ protected:
 	bool closeDevice() override;
 	ssize_t readDevice(void * read_to, ssize_t max_size) override;
 	ssize_t writeDevice(const void * data, ssize_t max_size) override;
+	void interrupt() override;

 private:
 	EVENT_HANDLER1(void, _readed, PIByteArray &, ba);
@@ -84,6 +86,7 @@ private:
 	PIMap<uint, Client *> index_clients;
 	PITimer ping_timer;
 	mutable PIMutex clients_mutex;
+	std::atomic_bool is_deleted;
 };

 #endif // PICLOUDSERVER_H
--- a/libs/main/core/pibase.h
+++ b/libs/main/core/pibase.h
@@ -248,6 +248,10 @@
   typedef long time_t;
 #endif

+#ifdef POSIX_SIGNALS
+#  define PIP_INTERRUPT_SIGNAL SIGTERM
+#endif
+
 #ifdef LINUX
 #  define environ __environ
 #endif
--- a/libs/main/core/piincludes.h
+++ b/libs/main/core/piincludes.h
@@ -44,6 +44,7 @@ class PIInit;
 #endif
 class PIChar;
 class PICout;
+class PIWaitEvent;

 struct lconv;

--- a/libs/main/core/piincludes_p.h
+++ b/libs/main/core/piincludes_p.h
@@ -22,6 +22,10 @@

 #include "picout.h"
 #ifdef WINDOWS
+#  ifdef _WIN32_WINNT
+#    undef _WIN32_WINNT
+#    define _WIN32_WINNT 0x0600
+#  endif
 #  include <stdarg.h>
 #  include <windef.h>
 #  include <winbase.h>
--- a/libs/main/core/piinit.cpp
+++ b/libs/main/core/piinit.cpp
@@ -92,9 +92,20 @@ void __sighandler__(PISignals::Signal s) {
 }


-#ifdef ANDROID
-void android_thread_exit_handler(int sig) {
-	pthread_exit(0);
+#ifdef POSIX_SIGNALS
+void pipThreadSignalHandler(int sig) {
+//#  ifdef ANDROID
+//	pthread_exit(0);
+//#  endif
+}
+void pipInitThreadSignals() {
+	struct sigaction actions;
+	memset(&actions, 0, sizeof(actions));
+	sigemptyset(&actions.sa_mask);
+	actions.sa_flags = 0;
+	actions.sa_handler = pipThreadSignalHandler;
+	if (sigaction(PIP_INTERRUPT_SIGNAL, &actions, 0) != 0)
+		piCout << "sigaction error:" << errorString();
 }
 #endif

@@ -166,14 +177,10 @@ PIInit::PIInit() {
 	setlocale(LC_ALL, "");
 	setlocale(LC_NUMERIC, "C");
 #  endif //HAS_LOCALE
-#else //ANDROID
-	struct sigaction actions;
-	memset(&actions, 0, sizeof(actions));
-	sigemptyset(&actions.sa_mask);
-	actions.sa_flags = 0;
-	actions.sa_handler = android_thread_exit_handler;
-	sigaction(SIGTERM, &actions, 0);
 #endif //ANDROID
+#ifdef POSIX_SIGNALS
+	pipInitThreadSignals();
+#endif
 	PRIVATE->delete_locs = false;
 	__syslocname__ = __sysoemname__ = 0;
 	__utf8name__ = const_cast<char*>("UTF-8");
--- a/libs/main/core/piobject.cpp
+++ b/libs/main/core/piobject.cpp
@@ -839,7 +839,7 @@ PIObject::Deleter::Deleter() {
 	PRIVATE->thread.setSlot([this](){
 		PIVector<PIObject*> oq;
 		PRIVATE->thread.lock();
-		while(PRIVATE->obj_queue.isEmpty()) PRIVATE->cond_var.wait(PRIVATE->thread.mutex());
+		if (PRIVATE->obj_queue.isEmpty()) PRIVATE->cond_var.wait(PRIVATE->thread.mutex());
 		oq.swap(PRIVATE->obj_queue);
 		PRIVATE->thread.unlock();
 		for (PIObject * o : oq) deleteObject(o);
--- a/libs/main/core/piwaitevent_p.cpp
+++ b/libs/main/core/piwaitevent_p.cpp
@@ -0,0 +1,144 @@
+/*
+	PIP - Platform Independent Primitives
+	Private PIP wait object
+	Ivan Pelipenko peri4ko@yandex.ru
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "piwaitevent_p.h"
+#ifdef WINDOWS
+//#  ifdef _WIN32_WINNT
+//#    undef _WIN32_WINNT
+//#    define _WIN32_WINNT 0x0600
+//#  endif
+#  include <synchapi.h>
+#else
+#  include <fcntl.h>
+#  include <sys/ioctl.h>
+#endif
+#include "pistring.h"
+
+
+PIWaitEvent::~PIWaitEvent() {
+	destroy();
+}
+
+
+void PIWaitEvent::create() {
+	destroy();
+#ifdef WINDOWS
+	event = CreateEventA(NULL, TRUE, FALSE, NULL);
+	if (!event) {
+		piCout << "Error with CreateEventA:" << errorString();
+	}
+#else
+	for (int i = 0; i < 3; ++i) memset(&(fds[i]), 0, sizeof(fds[i]));
+	if (::pipe(pipe_fd) < 0) {
+		piCout << "Error with pipe:" << errorString();
+	} else {
+		fcntl(pipe_fd[ReadEnd], F_SETFL, O_NONBLOCK);
+	}
+#endif
+}
+
+
+void PIWaitEvent::destroy() {
+#ifdef WINDOWS
+	if (event) {
+		CloseHandle(event);
+		event = NULL;
+	}
+#else
+	for (int i = 0; i < 2; ++i) {
+		if (pipe_fd[i] != 0) {
+			::close(pipe_fd[i]);
+			pipe_fd[i] = 0;
+		}
+	}
+#endif
+}
+
+
+bool PIWaitEvent::wait(int fd, CheckRole role) {
+	if (!isCreate()) return false;
+#ifdef WINDOWS
+	DWORD ret = WaitForSingleObjectEx(event, INFINITE, TRUE);
+	ResetEvent(event);
+	if (ret == WAIT_IO_COMPLETION || ret == WAIT_FAILED) return false;
+#else
+	if (fd == -1) return false;
+	int nfds = piMaxi(pipe_fd[ReadEnd], fd) + 1;
+	int fd_index = role;
+	for (int i = 0; i < 3; ++i) FD_ZERO(&(fds[i]));
+	FD_SET(pipe_fd[ReadEnd], &(fds[CheckRead]));
+	FD_SET(fd, &(fds[CheckExeption]));
+	if (fd_index != CheckExeption) FD_SET(fd, &(fds[fd_index]));
+	::select(nfds, &(fds[CheckRead]), &(fds[CheckWrite]), &(fds[CheckExeption]), nullptr);
+	int buf = 0;
+	while (::read(pipe_fd[ReadEnd], &buf, sizeof(buf)) > 0);
+	if (FD_ISSET(fd, &(fds[CheckExeption]))) return false;
+	return FD_ISSET(fd, &(fds[fd_index]));
+#endif
+	return true;
+}
+
+
+bool PIWaitEvent::sleep(int us) {
+	if (!isCreate()) return false;
+#ifdef WINDOWS
+	DWORD ret = WaitForSingleObjectEx(event, us / 1000, TRUE);
+	ResetEvent(event);
+	return ret == WAIT_TIMEOUT;
+#else
+	int nfds = pipe_fd[ReadEnd] + 1;
+	FD_ZERO(&(fds[CheckRead]));
+	FD_SET(pipe_fd[ReadEnd], &(fds[CheckRead]));
+	timeval timeout;
+	timeout.tv_sec  = us / 1000000;
+	timeout.tv_usec = us % 1000000;
+	int ret = ::select(nfds, &(fds[CheckRead]), nullptr, nullptr, &timeout);
+	int buf = 0;
+	while (::read(pipe_fd[ReadEnd], &buf, sizeof(buf)) > 0);
+	return ret == 0;
+#endif
+}
+
+
+void PIWaitEvent::interrupt() {
+	if (!isCreate()) return;
+#ifdef WINDOWS
+	SetEvent(event);
+#else
+	::write(pipe_fd[WriteEnd], "", 1);
+#endif
+}
+
+
+bool PIWaitEvent::isCreate() const {
+#ifdef WINDOWS
+	return event;
+#else
+	return pipe_fd[ReadEnd] != 0;
+#endif
+}
+
+
+void * PIWaitEvent::getEvent() const {
+#ifdef WINDOWS
+	return event;
+#else
+	return nullptr;
+#endif
+}
--- a/libs/main/core/piwaitevent_p.h
+++ b/libs/main/core/piwaitevent_p.h
@@ -0,0 +1,67 @@
+/*
+	PIP - Platform Independent Primitives
+	Private PIP wait object
+	Ivan Pelipenko peri4ko@yandex.ru
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef PIWAITEVENT_P_H
+#define PIWAITEVENT_P_H
+
+#include "pibase.h"
+#ifdef WINDOWS
+#  include <stdarg.h>
+#  include <windef.h>
+#  include <winbase.h>
+#else
+#  include <unistd.h>
+#  include <sys/select.h>
+#endif
+
+
+class PIP_EXPORT PIWaitEvent {
+public:
+	~PIWaitEvent();
+
+	enum CheckRole { // UNIX only
+		CheckRead,
+		CheckWrite,
+		CheckExeption
+	};
+
+	void create();
+	void destroy();
+	bool wait(int fd = -1, CheckRole role = CheckRead);
+	bool sleep(int us); // return if sleep done
+	void interrupt();
+	bool isCreate() const;
+	void * getEvent() const; // WINDOWS only
+
+private:
+#ifdef WINDOWS
+	void * event = nullptr;
+#else
+	int pipe_fd[2] = {0, 0};
+	fd_set fds[3];
+	enum {
+		ReadEnd  = 0,
+		WriteEnd = 1
+	};
+#endif
+
+};
+
+
+#endif // PIWAITEVENT_P_H
--- a/libs/main/io_devices/pican.cpp
+++ b/libs/main/io_devices/pican.cpp
@@ -18,7 +18,7 @@
 */
 #include "pican.h"
 #include "pipropertystorage.h"
-#include "piincludes_p.h"
+#include "piwaitevent_p.h"
 #if !defined(WINDOWS) && !defined(MAC_OS) && !defined(MICRO_PIP)
 #  define PIP_CAN
 #endif
@@ -39,17 +39,24 @@
 REGISTER_DEVICE(PICAN)


+PRIVATE_DEFINITION_START(PICAN)
+	PIWaitEvent event;
+PRIVATE_DEFINITION_END(PICAN)
+
+
 PICAN::PICAN(const PIString & path, PIIODevice::DeviceMode mode) : PIIODevice(path, mode) {
 	setThreadedReadBufferSize(256);
 	setPath(path);
 	can_id = 0;
 	sock = 0;
+	PRIVATE->event.create();
 }


 PICAN::~PICAN() {
-	stop();
+	stopAndWait();
 	close();
+	PRIVATE->event.destroy();
 }


@@ -92,6 +99,7 @@ bool PICAN::openDevice() {

 bool PICAN::closeDevice() {
 #ifdef PIP_CAN
+	interrupt();
 	if (sock > 0) ::close(sock);
 #endif
 	return true;
@@ -103,9 +111,8 @@ ssize_t PICAN::readDevice(void * read_to, ssize_t max_size) {
 	//piCout << "PICAN read";
 	can_frame frame;
 	ssize_t ret = 0;
-	reading_now = true;
-	ret = ::read(sock, &frame, sizeof(can_frame));
-	reading_now = false;
+	if (PRIVATE->event.wait(sock))
+		ret = ::read(sock, &frame, sizeof(can_frame));
 	if (ret < 0) {/*piCoutObj << "Error while read CAN frame " << ret;*/ return -1;}
 	//piCoutObj << "receive CAN frame Id =" << frame.can_id;
 	memcpy(read_to, frame.data, piMini(frame.can_dlc, max_size));
@@ -148,6 +155,11 @@ int PICAN::readedCANID() const {
 }


+void PICAN::interrupt() {
+	PRIVATE->event.interrupt();
+}
+
+
 PIString PICAN::constructFullPathDevice() const {
 	PIString ret;
 	ret += path() + ":" + PIString::fromNumber(CANID(), 16);
--- a/libs/main/io_devices/pican.h
+++ b/libs/main/io_devices/pican.h
@@ -39,6 +39,7 @@ public:
 	void setCANID(int id);
 	int CANID() const;
 	int readedCANID() const;
+	void interrupt() override;

 protected:
 	bool openDevice() override;
@@ -52,6 +53,7 @@ protected:
 	DeviceInfoFlags deviceInfoFlags() const override {return PIIODevice::Reliable;}

 private:
+	PRIVATE_DECLARATION(PIP_EXPORT)
 	int sock;
 	int can_id, readed_id;
 };
--- a/libs/main/io_devices/piethernet.cpp
+++ b/libs/main/io_devices/piethernet.cpp
@@ -67,6 +67,7 @@
 #    endif
 #  endif
 #endif
+#include "piwaitevent_p.h"
 #include <errno.h>


@@ -212,6 +213,7 @@ PRIVATE_DEFINITION_START(PIEthernet)
 	sockaddr_in addr_;
 	sockaddr_in saddr_;
 	sockaddr_in raddr_;
+	PIWaitEvent event;
 PRIVATE_DEFINITION_END(PIEthernet)


@@ -240,15 +242,18 @@ PIEthernet::PIEthernet(int sock_, PIString ip_port): PIIODevice("", ReadWrite) {
 	setParameters(PIEthernet::ReuseAddress | PIEthernet::MulticastLoop);
 	setType(TCP_Client, false);
 	setPath(ip_port);
+	ethNonblocking(sock);
+	PRIVATE->event.create();
 	//piCoutObj << "new tcp client" << sock_;
 }


 PIEthernet::~PIEthernet() {
-	//piCout << "~PIEthernet" << uint(this);
-	stop();
+	//piCout << "~PIEthernet";
+	stopAndWait();
 	close();
-	//piCoutObj << "~PIEthernet done";
+	PRIVATE->event.destroy();
+	//piCout << "~PIEthernet done";
 }


@@ -274,7 +279,9 @@ void PIEthernet::construct() {

 bool PIEthernet::init() {
 	if (isOpened()) return true;
-	//cout << "init " << type_ << endl;
+	if (sock != -1) return true;
+	//piCout << "init " << type();
+	PRIVATE->event.destroy();
 	if (sock_s == sock)
 		sock_s = -1;
 	closeSocket(sock);
@@ -289,6 +296,8 @@ bool PIEthernet::init() {
 	}
 	PIFlags<Parameters> params = parameters();
 	sock = ::socket(AF_INET, st, pr);
+	ethNonblocking(sock);
+	PRIVATE->event.create();
 	if (params[SeparateSockets])
 		sock_s = ::socket(AF_INET, st, pr);
 	else
@@ -301,7 +310,7 @@ bool PIEthernet::init() {
 	if (params[PIEthernet::Broadcast]) ethSetsockoptBool(sock, SOL_SOCKET, SO_BROADCAST);
 	applyTimeouts();
 	applyOptInt(IPPROTO_IP, IP_TTL, TTL());
-//	piCoutObj << "inited" << path();
+	//piCoutObj << "inited" << path();
 	return true;
 }

@@ -355,11 +364,12 @@ PIEthernet::Address PIEthernet::getBroadcast(const PIEthernet::Address & ip, con

 bool PIEthernet::openDevice() {
 	if (connected_) return true;
+	//piCoutObj << "open";
 	init();
 	if (sock == -1 || path().isEmpty()) return false;
 	addr_r.set(path());
-	if (type() == TCP_Client)
-		connecting_ = true;
+	//if (type() == TCP_Client)
+	//	connecting_ = true;
 	if (type() != UDP || mode() == PIIODevice::WriteOnly)
 		return true;
 	memset(&PRIVATE->addr_, 0, sizeof(PRIVATE->addr_));
@@ -392,21 +402,26 @@ bool PIEthernet::openDevice() {


 bool PIEthernet::closeDevice() {
-	//cout << "close\n";
+	//piCoutObj << "close";
+	bool ned = connected_;
+	connected_ = connecting_ = false;
+	server_thread_.stop();
+	PRIVATE->event.interrupt();
 	if (server_thread_.isRunning()) {
-		server_thread_.stop();
-		if (!server_thread_.waitForFinish(100))
+		if (!server_thread_.waitForFinish(1000))
 			server_thread_.terminate();
 	}
+	PRIVATE->event.destroy();
 	if (sock_s == sock)
 		sock_s = -1;
 	closeSocket(sock);
 	closeSocket(sock_s);
 	while (!clients_.isEmpty())
 		delete clients_.back();
-	bool ned = connected_;
-	connected_ = connecting_ = false;
-	if (ned) disconnected(false);
+	if (ned) {
+		piCoutObj << "Disconnect on close";
+		disconnected(false);
+	}
 	return true;
 }

@@ -556,6 +571,7 @@ bool PIEthernet::connect(bool threaded) {
 		connecting_ = true;
 		return true;
 	}
+	if (connected_) return false;
 	if (sock == -1) init();
 	if (sock == -1) return false;
 	memset(&PRIVATE->addr_, 0, sizeof(PRIVATE->addr_));
@@ -566,13 +582,14 @@ bool PIEthernet::connect(bool threaded) {
 #ifdef QNX
 	PRIVATE->addr_.sin_len = sizeof(PRIVATE->addr_);
 #endif
-	connected_ = (::connect(sock, (sockaddr * )&PRIVATE->addr_, sizeof(PRIVATE->addr_)) == 0);
+	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_;
@@ -618,7 +635,7 @@ bool PIEthernet::listen(bool threaded) {
 		return false;
 	}
 	opened_ = server_bounded = true;
-	//piCoutObj << "listen on " << ip_ << ":" << port_;
+	piCoutObj << "listen on" << path();
 	server_thread_.start(server_func);
 	return true;
 }
@@ -675,40 +692,21 @@ bool PIEthernet::send(const PIEthernet::Address & addr, const PIByteArray & data
 }


+void PIEthernet::interrupt() {
+	//piCout << "interrupt";
+	PRIVATE->event.interrupt();
+}
+
+
 ssize_t PIEthernet::readDevice(void * read_to, ssize_t max_size) {
 	//piCout << "read" << sock;
 	if (sock == -1) init();
 	if (sock == -1 || read_to == 0) return -1;
-	int rs = 0, s = 0, lerr = 0;
-	sockaddr_in client_addr;
-	socklen_t slen = sizeof(client_addr);
-//	piCoutObj << "read from " << ip_ << ":" << port_;
+	int rs = 0, lerr = 0;
+	//piCoutObj << "read from " << path() << connecting_;
 	switch (type()) {
-	case TCP_SingleTCP:
-		reading_now = true;
-		::listen(sock, 64);
-		reading_now = false;
-		s = accept(sock, (sockaddr * )&client_addr, &slen);
-		if (s == -1) {
-			//piCoutObj << "Can`t accept new connection, " << ethErrorString();
-			piMinSleep();
-			return -1;
-		}
-		reading_now = true;
-		rs = ethRecv(s, read_to, max_size);
-		reading_now = false;
-		closeSocket(s);
-		return rs;
 	case TCP_Client:
 		if (connecting_) {
-#ifdef ANDROID
-			/*if (sock_s == sock)
-				sock_s = -1;
-			closeSocket(sock);
-			closeSocket(sock_s);
-			init();
-			qDebug() << "init() in read thread";*/
-#endif
 			addr_r.set(path());
 			memset(&PRIVATE->addr_, 0, sizeof(PRIVATE->addr_));
 			PRIVATE->addr_.sin_port = htons(addr_r.port());
@@ -717,11 +715,9 @@ ssize_t PIEthernet::readDevice(void * read_to, ssize_t max_size) {
 #ifdef QNX
 			PRIVATE->addr_.sin_len = sizeof(PRIVATE->addr_);
 #endif
-			//piCout << "connect to " << path() << "...";
-			reading_now = true;
-			connected_ = (::connect(sock, (sockaddr * )&(PRIVATE->addr_), sizeof(PRIVATE->addr_)) == 0);
-			reading_now = false;
-			//piCout << "connect to " << path() << connected_;
+			piCoutObj << "connect to " << path() << "...";
+			connected_ = connectTCP();
+			piCoutObj << "connect to " << path() << connected_;
 			if (!connected_)
 				piCoutObj << "Can`t connect to" << addr_r << "," << ethErrorString();
 			opened_ = connected_;
@@ -734,9 +730,25 @@ ssize_t PIEthernet::readDevice(void * read_to, ssize_t max_size) {
 		}
 		if (!connected_) return -1;
 		errorClear();
-		reading_now = true;
-		rs = ethRecv(sock, read_to, max_size);
-		reading_now = false;
+#ifdef WINDOWS
+		{
+		long wr = waitForEvent(PRIVATE->event, FD_READ | FD_CLOSE);
+		switch (wr) {
+		case FD_READ:
+			//piCout << "fd_read ...";
+			rs = ethRecv(sock, read_to, max_size);
+			break;
+		case FD_CLOSE:
+			//piCout << "fd_close ...";
+			rs = -1;
+			break;
+		default: break;
+		}
+		}
+#else
+		if (PRIVATE->event.wait(sock))
+			rs = ethRecv(sock, read_to, max_size);
+#endif
 		//piCoutObj << "readed" << rs;
 		if (rs <= 0) {
 			lerr = ethErrorCore();
@@ -744,30 +756,47 @@ ssize_t PIEthernet::readDevice(void * read_to, ssize_t max_size) {
 #ifdef WINDOWS
 			if ((lerr == WSAEWOULDBLOCK || lerr == WSAETIMEDOUT) && !parameters()[DisonnectOnTimeout]) {
 #elif defined(ANDROID)
-			if ((lerr == EWOULDBLOCK || lerr == EAGAIN || lerr == EINTR) && !parameters()[DisonnectOnTimeout]) {
+			if ((lerr == EWOULDBLOCK || lerr == EAGAIN || lerr == EINTR) && !parameters()[DisonnectOnTimeout] && rs < 0) {
 #else
-			if ((lerr == EWOULDBLOCK || lerr == EAGAIN) && !parameters()[DisonnectOnTimeout]) {
+			if ((lerr == EWOULDBLOCK || lerr == EAGAIN) && !parameters()[DisonnectOnTimeout] && rs < 0) {
 #endif
 			//piCoutObj << errorString();
 				return -1;
 			}
-			if (connected_) {
+			if (connected_.exchange(false)) {
+				opened_ = false;
 				piCoutObj << "Disconnect on read," << ethErrorString();
-				opened_ = connected_ = false;
+				closeSocket(sock);
 				init();
 				disconnected(rs < 0);
 			}
-			if (parameters()[KeepConnection])
+			if (parameters()[KeepConnection]) {
 				connect();
+			}
 			//piCoutObj << "eth" << ip_ << "disconnected";
 		}
 		if (rs > 0) received(read_to, rs);
 		return rs;
-	case UDP:
+	case UDP: {
 		memset(&PRIVATE->raddr_, 0, sizeof(PRIVATE->raddr_));
-		reading_now = true;
+		//piCoutObj << "read from" << path() << "...";
+#ifdef WINDOWS
+		long wr = waitForEvent(PRIVATE->event, FD_READ | FD_CLOSE);
+		switch (wr) {
+		case FD_READ:
+			//piCout << "fd_read ...";
+			rs = ethRecvfrom(sock, read_to, max_size, 0, (sockaddr*)&PRIVATE->raddr_);
+			break;
+		case FD_CLOSE:
+			//piCout << "fd_close ...";
+			rs = -1;
+			break;
+		default: break;
+		}
+#else
 		rs = ethRecvfrom(sock, read_to, max_size, 0, (sockaddr*)&PRIVATE->raddr_);
-		reading_now = false;
+#endif
+		//piCoutObj << "read from" << path() << rs << "bytes";
 		if (rs > 0) {
 			addr_lr.set(uint(PRIVATE->raddr_.sin_addr.s_addr), ntohs(PRIVATE->raddr_.sin_port));
 			//piCoutObj << "read from" << ip_r << ":" << port_r << rs << "bytes";
@@ -775,6 +804,7 @@ ssize_t PIEthernet::readDevice(void * read_to, ssize_t max_size) {
 		}
 		//else piCoutObj << "read returt" << rs << ", error" << ethErrorString();
 		return rs;
+		}
 	default: break;
 	}
 	return -1;
@@ -790,26 +820,6 @@ ssize_t PIEthernet::writeDevice(const void * data, ssize_t max_size) {
 	//piCoutObj << "sending to " << ip_s << ":" << port_s << "  " << max_size << " bytes";
 	int ret = 0;
 	switch (type()) {
-	case TCP_SingleTCP:
-		memset(&PRIVATE->addr_, 0, sizeof(PRIVATE->addr_));
-		PRIVATE->addr_.sin_port = htons(addr_s.port());
-		PRIVATE->addr_.sin_addr.s_addr = addr_s.ip();
-		PRIVATE->addr_.sin_family = AF_INET;
-#ifdef QNX
-		PRIVATE->addr_.sin_len = sizeof(PRIVATE->addr_);
-#endif
-		//piCoutObj << "connect SingleTCP" << ip_s << ":" << port_s << "...";
-		if (::connect(sock, (sockaddr * )&PRIVATE->addr_, sizeof(PRIVATE->addr_)) != 0) {
-			//piCoutObj << "Can`t connect to " << ip_s << ":" << port_s << ", " << ethErrorString();
-			piMinSleep();
-			return -1;
-		}
-		//piCoutObj << "ok, write SingleTCP" << int(data) << max_size << "bytes ...";
-		ret = ::send(sock, (const char *)data, max_size, 0);
-		//piCoutObj << "ok, ret" << ret;
-		closeSocket(sock);
-		init();
-		return ret;
 	case UDP:
 		PRIVATE->saddr_.sin_port = htons(addr_s.port());
 		PRIVATE->saddr_.sin_addr.s_addr = addr_s.ip();
@@ -823,7 +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());
@@ -834,7 +844,7 @@ ssize_t PIEthernet::writeDevice(const void * data, ssize_t max_size) {
 			PRIVATE->addr_.sin_len = sizeof(PRIVATE->addr_);
 #endif
 			//piCoutObj << "connect to " << ip << ":" << port_;
-			connected_ = (::connect(sock, (sockaddr * )&PRIVATE->addr_, sizeof(PRIVATE->addr_)) == 0);
+			connected_ = connectTCP();
 			if (!connected_)
 				piCoutObj << "Can`t connect to" << addr_r << "," << ethErrorString();
 			opened_ = connected_;
@@ -844,14 +854,46 @@ 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) {
-			piCoutObj << "Disconnect on write," << ethErrorString();
-			opened_ = connected_ = false;
-			init();
-			disconnected(true);
+		auto disconnectFunc = [this](){
+			if (connected_.exchange(false)) {
+				opened_ = false;
+				piCoutObj << "Disconnect on write," << ethErrorString();
+				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;
@@ -862,8 +904,7 @@ PIIODevice::DeviceInfoFlags PIEthernet::deviceInfoFlags() const {
 	switch (type()) {
 	case UDP: return 0;
 	case TCP_Client:
-	case TCP_Server:
-	case TCP_SingleTCP: return Sequential | Reliable;
+	case TCP_Server: return Sequential | Reliable;
 	default: break;
 	}
 	return 0;
@@ -890,7 +931,21 @@ void PIEthernet::server_func(void * eth) {
 	}
 	sockaddr_in client_addr;
 	socklen_t slen = sizeof(client_addr);
+#ifdef WINDOWS
+	long wr = ce->waitForEvent(ce->PRIVATEWB->event, FD_ACCEPT | FD_CLOSE);
+	if (wr != FD_ACCEPT) {
+		piMSleep(10);
+		return;
+	}
+#else
+	if (!ce->PRIVATEWB->event.wait(ce->sock)) {
+		piMSleep(10);
+		return;
+	}
+#endif
+	//piCout << "server" << "accept ...";
 	int s = accept(ce->sock, (sockaddr * )&client_addr, &slen);
+	//piCout << "server" << "accept done" << ethErrorString();
 	if (s == -1) {
 		int lerr = ethErrorCore();
 #ifdef WINDOWS
@@ -930,6 +985,49 @@ void PIEthernet::setType(Type t, bool reopen) {
 }


+bool PIEthernet::connectTCP() {
+	::connect(sock, (sockaddr * )&(PRIVATE->addr_), sizeof(PRIVATE->addr_));
+	//piCout << errorString();
+#ifdef WINDOWS
+	long wr = waitForEvent(PRIVATE->event, FD_CONNECT | FD_CLOSE);
+	switch (wr) {
+	case FD_CONNECT:
+		//piCout << "fd_connect ...";
+		return ethIsWriteable(sock);
+	default: break;
+	}
+#else
+	if (PRIVATE->event.wait(sock, PIWaitEvent::CheckWrite)) {
+		if (ethIsWriteable(sock)) return true;
+		else {
+			closeSocket(sock);
+			init();
+		}
+	}
+#endif
+	return false;
+}
+
+
+#ifdef WINDOWS
+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, event.getEvent(), &events);
+		//piCout << "wait result" << events.lNetworkEvents;
+		return events.lNetworkEvents;
+	}
+	return 0;
+}
+#endif
+
+
 bool PIEthernet::configureDevice(const void * e_main, const void * e_parent) {
 	PIConfig::Entry * em = (PIConfig::Entry * )e_main;
 	PIConfig::Entry * ep = (PIConfig::Entry * )e_parent;
@@ -1333,3 +1431,43 @@ int PIEthernet::ethSetsockoptBool(int sock, int level, int optname, bool value)
 			so = (value ? 1 : 0);
 	return ethSetsockopt(sock, level, optname, &so, sizeof(so));
 }
+
+
+void PIEthernet::ethNonblocking(int sock) {
+	if (sock < 0) return;
+#ifdef WINDOWS
+	u_long mode = 1;
+	ioctlsocket(sock, FIONBIO, &mode);
+#else
+	fcntl(sock, F_SETFL, O_NONBLOCK);
+#endif
+}
+
+
+bool PIEthernet::ethIsWriteable(int sock) {
+/*	fd_set fd_test;
+	FD_ZERO(&fd_test);
+	FD_SET(sock, &fd_test);
+	int fds = 0;
+#ifndef WINDOWS
+	fds = sock + 1;
+#endif
+	timeval timeout;
+	timeout.tv_sec = timeout.tv_usec = 0;
+	::select(fds, nullptr, &fd_test, nullptr, &timeout);
+	return FD_ISSET(sock, &fd_test);*/
+#ifdef WINDOWS
+	fd_set fd_test;
+	FD_ZERO(&fd_test);
+	FD_SET(sock, &fd_test);
+	timeval timeout;
+	timeout.tv_sec = timeout.tv_usec = 0;
+	::select(0, nullptr, &fd_test, nullptr, &timeout);
+	return FD_ISSET(sock, &fd_test);
+#else
+	int ret = 0;
+	socklen_t len = sizeof(ret);
+	getsockopt(sock, SOL_SOCKET, SO_ERROR, (char*)&ret, &len);
+	return ret == 0;
+#endif
+}
--- a/libs/main/io_devices/piethernet.h
+++ b/libs/main/io_devices/piethernet.h
@@ -49,8 +49,7 @@ public:
 	enum Type {
 		UDP /** UDP - User Datagram Protocol */ ,
 		TCP_Client /** TCP client - allow connection to TCP server */ ,
-		TCP_Server /** TCP server - receive connections from TCP clients */ ,
-		TCP_SingleTCP /** TCP client single mode - connect & send & disconnect, on each packet */
+		TCP_Server /** TCP server - receive connections from TCP clients */
 	};
 	
 	//! \brief Parameters of %PIEthernet
@@ -315,6 +314,8 @@ public:
 	
 	bool canWrite() const override {return mode() & WriteOnly;}

+	void interrupt() override;
+
 	int socket() const {return sock;}
 	
 	EVENT1(newConnection, PIEthernet * , client);
@@ -487,7 +488,7 @@ protected:
 	
 	PRIVATE_DECLARATION(PIP_EXPORT)
 	int sock, sock_s;
-	bool connected_, connecting_, listen_threaded, server_bounded;
+	std::atomic_bool connected_, connecting_, listen_threaded, server_bounded;
 	mutable Address addr_r, addr_s, addr_lr;
 	Type eth_type;
 	PIThread server_thread_;
@@ -500,6 +501,10 @@ private:
 	EVENT_HANDLER1(void, clientDeleted, PIObject *, o);
 	static void server_func(void * eth);
 	void setType(Type t, bool reopen = true);
+	bool connectTCP();
+#ifdef WINDOWS
+	long waitForEvent(PIWaitEvent & event, long mask);
+#endif

 	static int ethErrorCore();
 	static PIString ethErrorString();
@@ -510,6 +515,8 @@ private:
 	static int ethSetsockopt(int sock, int level, int optname, const void * optval, int optlen);
 	static int ethSetsockoptInt(int sock, int level, int optname, int value = 1);
 	static int ethSetsockoptBool(int sock, int level, int optname, bool value = true);
+	static void ethNonblocking(int sock);
+	static bool ethIsWriteable(int sock);

 };

--- a/libs/main/io_devices/pifile.cpp
+++ b/libs/main/io_devices/pifile.cpp
@@ -439,9 +439,7 @@ PIByteArray PIFile::get() {

 ssize_t PIFile::readDevice(void * read_to, ssize_t max_size) {
 	if (!canRead() || PRIVATE->fd == 0) return -1;
-	reading_now = true;
 	ssize_t ret = fread(read_to, 1, max_size, PRIVATE->fd);
-	reading_now = false;
 	return ret;
 }

--- a/libs/main/io_devices/piiodevice.cpp
+++ b/libs/main/io_devices/piiodevice.cpp
@@ -131,7 +131,8 @@ PIIODevice::PIIODevice(const PIString & path, PIIODevice::DeviceMode mode): PIOb


 PIIODevice::~PIIODevice() {
-	stop();
+	destroying = true;
+	stopAndWait();
 }


@@ -213,11 +214,11 @@ void PIIODevice::stopThreadedRead() {
 #ifdef MICRO_PIP
 	read_thread.stop();
 #else
-	if (reading_now) {
-		read_thread.terminate();
-		reading_now = false;
+	read_thread.stop();
+	if (!destroying) {
+		interrupt();
 	} else {
-		read_thread.stop();
+		piCoutObj << "Error: Device is running after destructor!";
 	}
 #endif
 }
@@ -269,6 +270,13 @@ void PIIODevice::stop() {
 }


+void PIIODevice::stopAndWait(int timeout_ms) {
+	stop();
+	waitThreadedReadFinished(timeout_ms);
+	waitThreadedWriteFinished(timeout_ms);
+}
+
+
 ssize_t PIIODevice::read(void * read_to, ssize_t max_size) {
 	ssize_t ret = readDevice(read_to, max_size);
 	return ret;
@@ -296,7 +304,6 @@ ssize_t PIIODevice::write(const void * data, ssize_t max_size) {


 void PIIODevice::_init() {
-	reading_now = false;
 	setOptions(0);
 	setReopenEnabled(true);
 	setReopenTimeout(1000);
@@ -630,7 +637,3 @@ void PIIODevice::configureFromVariantDevice(const PIPropertyStorage & d) {
 }


-void PIIODevice::softStopThreadedRead() {
-	read_thread.stop();
-}
-
--- a/libs/main/io_devices/piiodevice.h
+++ b/libs/main/io_devices/piiodevice.h
@@ -277,6 +277,14 @@ public:
 	//! \~russian Останавливает потоковое чтение и запись.
 	void stop();

+	//! \~english Stop both threaded read and threaded write and wait for finish.
+	//! \~russian Останавливает потоковое чтение и запись и ожидает завершения.
+	void stopAndWait(int timeout_ms = -1);
+
+	//! \~english Interrupt blocking operation.
+	//! \~russian Прерывает блокирующую операцию.
+	virtual void interrupt() {}
+

 	//! \~english Read from device maximum "max_size" bytes to "read_to"
 	//! \~russian Читает из устройства не более "max_size" байт в "read_to"
@@ -382,8 +390,6 @@ public:
 	//! \~russian Пишет в устройство блок памяти "mb"
 	ssize_t write(const PIMemoryBlock & mb) {return write(mb.data(), mb.size());}

-	void softStopThreadedRead();
-
 	EVENT_VHANDLER(void, flush) {;}
 	
 	EVENT(opened);
@@ -537,10 +543,6 @@ protected:
 	bool opened_ = false;
 	void * ret_data_ = nullptr;

-	//! \~english Set this flag while blocking operations
-	//! \~russian Устанавливайте этот флаг во время блокирующих операций
-	std::atomic_bool reading_now;
-
 private:
 	EVENT_HANDLER(void, read_func);
 	EVENT_HANDLER(void, write_func);
@@ -557,7 +559,7 @@ private:
 	PIQueue<PIPair<PIByteArray, ullong> > write_queue;
 	ullong tri = 0;
 	uint threaded_read_buffer_size, reopen_timeout = 1000;
-	bool reopen_enabled = true;
+	bool reopen_enabled = true, destroying = false;

 	static PIMutex nfp_mutex;
 	static PIMap<PIString, PIString> nfp_cache;
--- a/libs/main/io_devices/pipeer.cpp
+++ b/libs/main/io_devices/pipeer.cpp
@@ -192,7 +192,7 @@ PIPeer::~PIPeer() {
 		if (p._data) {
 			p._data->dt_in.stop();
 			p._data->dt_out.stop();
-			p._data->t.stop(true);
+			p._data->t.stopAndWait();
 		}
 	destroyEths();
 	piForeach (PIEthernet * i, eths_mcast) {
--- a/libs/main/io_devices/piserial.cpp
+++ b/libs/main/io_devices/piserial.cpp
@@ -22,6 +22,7 @@
 #include "piconfig.h"
 #include "pidir.h"
 #include "pipropertystorage.h"
+#include "piwaitevent_p.h"
 #include <errno.h>

 #if defined(MICRO_PIP)
@@ -169,24 +170,22 @@ REGISTER_DEVICE(PISerial)


 PRIVATE_DEFINITION_START(PISerial)
+	PIWaitEvent event;
 #ifdef WINDOWS
+	PIWaitEvent event_write;
 	DCB desc, sdesc;
-	void * hCom;
-	DWORD readed, mask;
+	HANDLE hCom = nullptr;
+	DWORD readed = 0, mask = 0;
+	OVERLAPPED overlap, overlap_write;
 #else
 	termios desc, sdesc;
-	uint readed;
+	uint readed = 0;
 #endif
 PRIVATE_DEFINITION_END(PISerial)




-PISerial::DeviceInfo::DeviceInfo() {
-	vID = pID = 0;
-}
-
-
 PIString PISerial::DeviceInfo::id() const {
 	return PIString::fromNumber(vID, 16).toLowerCase().expandLeftTo(4, '0') + ":" +
 			PIString::fromNumber(pID, 16).toLowerCase().expandLeftTo(4, '0');
@@ -209,19 +208,18 @@ PISerial::PISerial(const PIString & device_, PISerial::Speed speed_, PIFlags<PIS


 PISerial::~PISerial() {
-	stop();
+	stopAndWait();
 	close();
+	PRIVATE->event.destroy();
+#ifdef WINDOWS
+	PRIVATE->event_write.destroy();
+#endif
 }


 void PISerial::construct() {
-#ifdef WINDOWS
-	PRIVATE->hCom = 0;
-#endif
-	fd = -1;
-	//setPriority(piHigh);
-	vtime = 10;
 	sending = false;
+	//setPriority(piHigh);
 	setParameters(0);
 	setSpeed(S115200);
 	setDataBitsCount(8);
@@ -628,6 +626,15 @@ bool PISerial::send(const void * data, int size) {
 }


+void PISerial::interrupt() {
+	//piCoutObj << "interrupt";
+	PRIVATE->event.interrupt();
+#ifdef WINDOWS
+	PRIVATE->event_write.interrupt();
+#endif
+}
+
+
 bool PISerial::openDevice() {
 	PIString p = path();
 	//piCout << "ser open" << p;
@@ -651,7 +658,7 @@ bool PISerial::openDevice() {
 	if (isReadable()) {ds |= GENERIC_READ; sm |= FILE_SHARE_READ;}
 	if (isWriteable()) {ds |= GENERIC_WRITE; sm |= FILE_SHARE_WRITE;}
 	PIString wp = "//./" + p;
-	PRIVATE->hCom = CreateFileA(wp.dataAscii(), ds, sm, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM, 0);
+	PRIVATE->hCom = CreateFileA(wp.dataAscii(), ds, sm, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, 0);
 	if (PRIVATE->hCom == INVALID_HANDLE_VALUE) {
 		piCoutObj << "Unable to open \"" << p << "\"";
 		fd = -1;
@@ -675,6 +682,11 @@ bool PISerial::openDevice() {
 	//piCoutObj << "Initialized " << p;
 #endif
 	applySettings();
+	PRIVATE->event.create();
+#ifdef WINDOWS
+	PRIVATE->event_write.create();
+#endif
+
 	return true;
 }

@@ -696,6 +708,10 @@ bool PISerial::closeDevice() {
 #endif
 		fd = -1;
 	}
+	PRIVATE->event.destroy();
+#ifdef WINDOWS
+	PRIVATE->event_write.destroy();
+#endif
 	return true;
 }

@@ -796,15 +812,22 @@ ssize_t PISerial::readDevice(void * read_to, ssize_t max_size) {
 #ifdef WINDOWS
 		if (!canRead()) return -1;
 		if (sending) return -1;
-//		piCoutObj << "com event ...";
 		//piCoutObj << "read ..." << PRIVATE->hCom;
-		reading_now = true;
-		ReadFile(PRIVATE->hCom, read_to, max_size, &PRIVATE->readed, 0);
-		reading_now = false;
+		memset(&(PRIVATE->overlap), 0, sizeof(PRIVATE->overlap));
+		PRIVATE->overlap.hEvent = PRIVATE->event.getEvent();
+		ReadFile(PRIVATE->hCom, read_to, max_size, NULL, &(PRIVATE->overlap));
+		PRIVATE->readed = 0;
+		if (PRIVATE->event.wait()) {
+			GetOverlappedResult(PRIVATE->hCom, &(PRIVATE->overlap), &(PRIVATE->readed), FALSE);
+		} else
+			return -1;
+		//piCoutObj << "read done" << PRIVATE->readed;
 		DWORD err = GetLastError();
-		//piCout << err;
+		if (err == ERROR_TIMEOUT && PRIVATE->readed == 0)
+			return 0;
 		if (err == ERROR_BAD_COMMAND || err == ERROR_ACCESS_DENIED) {
-			softStopThreadedRead();
+			piCoutObj << "read error" << (PRIVATE->readed) << errorString();
+			stop();
 			close();
 			return 0;
 		}
@@ -812,13 +835,12 @@ ssize_t PISerial::readDevice(void * read_to, ssize_t max_size) {
 		return PRIVATE->readed;
 #else
 		if (!canRead()) return -1;
-		reading_now = true;
+		if (!PRIVATE->event.wait(fd)) return -1;
 		ssize_t ret = ::read(fd, read_to, max_size);
-		reading_now = false;
 		if (ret < 0) {
 			int err = errno;
 			if (err == EBADF || err == EFAULT || err == EINVAL || err == EIO) {
-				softStopThreadedRead();
+				stopThreadedRead();
 				close();
 				return 0;
 			}
@@ -834,12 +856,17 @@ ssize_t PISerial::writeDevice(const void * data, ssize_t max_size) {
 		return -1;
 	}
 #ifdef WINDOWS
-	DWORD wrote;
-//	piCoutObj << "send ...";// << max_size;// << ": " << PIString((char*)data, max_size);
+	DWORD wrote(0);
+	//piCoutObj << "send ..." << max_size;// << ": " << PIString((char*)data, max_size);
 	sending = true;
-	WriteFile(PRIVATE->hCom, data, max_size, &wrote, 0);
+	memset(&(PRIVATE->overlap_write), 0, sizeof(PRIVATE->overlap_write));
+	PRIVATE->overlap_write.hEvent = PRIVATE->event_write.getEvent();
+	WriteFile(PRIVATE->hCom, data, max_size, NULL, &(PRIVATE->overlap_write));
+	if (PRIVATE->event_write.wait()) {
+		GetOverlappedResult(PRIVATE->hCom, &(PRIVATE->overlap_write), &wrote, FALSE);
+	}
 	sending = false;
-//	piCoutObj << "send ok";// << wrote << " bytes in " << path();
+	//piCoutObj << "send ok" << wrote;// << " bytes in " << path();
 #else
 	ssize_t wrote;
 	wrote = ::write(fd, data, max_size);
@@ -1150,7 +1177,7 @@ PIVector<PISerial::DeviceInfo> PISerial::availableDevicesInfo(bool test) {
 	if (test) {
 		for (int i = 0; i < ret.size_s(); ++i) {
 #ifdef WINDOWS
-			void * hComm = CreateFileA(ret[i].path.dataAscii(), GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM, 0);
+			void * hComm = CreateFileA(ret[i].path.dataAscii(), GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, 0);
 			if (hComm == INVALID_HANDLE_VALUE) {
 #else
 			int fd = ::open(ret[i].path.dataAscii(), O_NOCTTY | O_RDONLY);
--- a/libs/main/io_devices/piserial.h
+++ b/libs/main/io_devices/piserial.h
@@ -90,19 +90,17 @@ public:
 	//! \~english Information about serial device
 	//! \~russian Информация о последовательном устройстве
 	struct PIP_EXPORT DeviceInfo {
-		DeviceInfo();
-
 		//! \~english Returns string representation of USB ID in format "xxxx:xxxx" (vID:pID)
 		//! \~russian Возвращает строковое представление USB ID в формате "xxxx:xxxx" (vID:pID)
 		PIString id() const;

 		//! \~english USB Vendor ID
 		//! \~russian USB Vendor ID
-		uint vID;
+		uint vID = 0;

 		//! \~english USB Product ID
 		//! \~russian USB Product ID
-		uint pID;
+		uint pID = 0;

 		//! \~english Path to device, e.g. "COM2" or "/dev/ttyUSB0"
 		//! \~russian Путь к устройству, например "COM2" или "/dev/ttyUSB0"
@@ -240,6 +238,8 @@ public:
 	//! \~russian Пишет в порт байтовый массив "data". Возвращает если количество записанных байт = размер "data"
 	bool send(const PIByteArray & data) {return send(data.data(), data.size_s());}
 	
+	void interrupt() override;
+
 	//! \~english Returns all available speeds for serial devices
 	//! \~russian Возвращает все возможные скорости для устройств
 	static PIVector<int> availableSpeeds();
@@ -310,8 +310,8 @@ protected:
 	bool closeDevice() override;

 	PRIVATE_DECLARATION(PIP_EXPORT)
-	int fd, vtime;
-	bool sending;
+	int fd = -1, vtime = 10;
+	std::atomic_bool sending;
 	PITimeMeasurer tm_;

 };
--- a/libs/main/io_utils/piconnection.cpp
+++ b/libs/main/io_utils/piconnection.cpp
@@ -1114,7 +1114,10 @@ PIVector<PIIODevice * > PIConnection::DevicePool::boundedDevices(const PIConnect

 PIConnection::DevicePool::DeviceData::~DeviceData() {
 	if (rthread) {
-		rthread->terminate();
+		rthread->stop();
+		if (dev) dev->interrupt();
+		if (!rthread->waitForFinish(1000))
+			rthread->terminate();
 		delete rthread;
 		rthread = nullptr;
 	}
@@ -1146,8 +1149,13 @@ void __DevicePool_threadReadDP(void * ddp) {
 	}
 	if (dev->isClosed()) {
 		if (!dev->open()) {
-			piMSleep(dev->reopenTimeout());
-			return;
+			PITimeMeasurer tm;
+			int timeout = dev->reopenTimeout();
+			while (tm.elapsed_m() < timeout) {
+				if (dd->rthread->isStopping())
+					return;
+				piMSleep(50);
+			}
 		}
 	}
 	PIByteArray ba;
--- a/libs/main/piplatform.h
+++ b/libs/main/piplatform.h
@@ -100,4 +100,8 @@
 #endif


+#if defined(LINUX) || defined(MAC_OS) || defined(ANDROID)
+#  define POSIX_SIGNALS
+#endif
+
 #endif // PIPLATFORM_H
--- a/libs/main/thread/pithread.cpp
+++ b/libs/main/thread/pithread.cpp
@@ -23,6 +23,9 @@
 #ifndef MICRO_PIP
 #  include "pisystemtests.h"
 #endif
+#ifdef WINDOWS
+#  include <ioapiset.h>
+#endif
 #include <signal.h>
 #if defined(WINDOWS)
 #  define __THREAD_FUNC_RET__ uint __stdcall
@@ -482,7 +485,7 @@ void __PIThreadCollection::stoppedAuto() {
 	auto_mutex.lock();
 	auto_threads_.removeAll(t);
 	auto_mutex.unlock();
-	delete t;
+	t->deleteLater();
 }


@@ -591,10 +594,35 @@ PIThread::~PIThread() {
 }


-void PIThread::stop(bool wait) {
+void PIThread::stopAndWait(int timeout_ms) {
+	stop();
+	waitForFinish(timeout_ms);
+}
+
+
+#ifdef WINDOWS
+NTAPI void winThreadAPC(ULONG_PTR) {
+	//piCout << "APC";
+}
+#endif
+
+void PIThread::interrupt() {
+	if (PRIVATE->thread == 0) return;
+	piCout << "PIThread::interrupt";
+#ifdef WINDOWS
+	CancelSynchronousIo(PRIVATE->thread);
+	QueueUserAPC(winThreadAPC, PRIVATE->thread, 0);
+#else
+#  ifdef POSIX_SIGNALS
+	pthread_kill(PRIVATE->thread, PIP_INTERRUPT_SIGNAL);
+#  endif
+#endif
+}
+
+
+void PIThread::stop() {
 	//PICout(PICoutManipulators::DefaultControls) << "thread" << this << "stop ..." << running_ << wait;
 	terminating = true;
-	if (wait) waitForFinish();
 }


--- a/libs/main/thread/pithread.h
+++ b/libs/main/thread/pithread.h
@@ -107,9 +107,14 @@ public:
 	bool start(std::function<void()> func, int timer_delay) {ret_func = [func](void*){func();}; return start(timer_delay);}
 	EVENT_HANDLER0(bool, startOnce);
 	EVENT_HANDLER1(bool, startOnce, ThreadFunc, func) {ret_func = func; return startOnce();}
-	EVENT_HANDLER0(void, stop) {stop(false);}
-	EVENT_HANDLER1(void, stop, bool, wait);
+	EVENT_HANDLER0(void, stop);
 	EVENT_HANDLER0(void, terminate);
+
+	//! \~english Stop thread and wait for finish.
+	//! \~russian Останавливает поток и ожидает завершения.
+	void stopAndWait(int timeout_ms = -1);
+
+	void interrupt();
 	
 	//! \~english Set common data passed to external function
 	//! \~russian Устанавливает данные, передаваемые в функцию потока
@@ -195,7 +200,7 @@ public:
 	//! \~english Start thread without internal loop
 	//! \~russian Запускает поток без внутреннего цикла
 	
-	//! \fn void stop(bool wait = false)
+	//! \fn void stop()
 	//! \brief
 	//! \~english Stop thread
 	//! \~russian Останавливает поток
@@ -203,7 +208,7 @@ public:
 	//! \fn void terminate()
 	//! \brief
 	//! \~english Strongly stop thread
-	//! \~russian Жестко останавливает поток
+	//! \~russian Жёстко прерывает поток
 	
 	//! \fn bool waitForStart(int timeout_msecs = -1)
 	//! \brief
--- a/libs/main/thread/pithreadpoolloop.cpp
+++ b/libs/main/thread/pithreadpoolloop.cpp
@@ -114,7 +114,7 @@ PIThreadPoolLoop::PIThreadPoolLoop(int thread_cnt) {

 PIThreadPoolLoop::~PIThreadPoolLoop() {
 	for (auto * t: threads) {
-		t->stop(false);
+		t->stop();
 		if (!t->waitForFinish(100))
 			t->terminate();
 		delete t;
@@ -135,7 +135,7 @@ void PIThreadPoolLoop::start(int index_start, int index_count) {
 			while (1) {
 				int cc = counter.fetch_add(1);
 				if (cc >= end) {
-					t->stop(false);
+					t->stop();
 					return;
 				}
 				func(cc);
--- a/libs/main/thread/pitimer.cpp
+++ b/libs/main/thread/pitimer.cpp
@@ -19,6 +19,7 @@

 #include "pitimer.h"
 #include "piincludes_p.h"
+#include "piconditionvar.h"
 #ifdef PIP_TIMER_RT
 #  include <csignal>
 #endif
@@ -127,14 +128,14 @@ void _PITimerBase::setInterval(double i) {
 	interval_ = i;
 	if (isRunning()) {
 		//piCout << "change interval runtime";
-		stop(true);
+		stop();
 		start();
 	}
 }


 bool _PITimerBase::start(double interval_ms) {
-	if (isRunning()) stop(true);
+	if (isRunning()) stop();
 	deferred_ = false;
 	setInterval(interval_ms);
 	//piCout << "_PITimerBase::startTimer"<<interval_ms<<"...";
@@ -144,7 +145,7 @@ bool _PITimerBase::start(double interval_ms) {


 void _PITimerBase::startDeferred(double interval_ms, PIDateTime start_datetime) {
-	if (isRunning()) stop(true);
+	if (isRunning()) stop();
 	deferred_ = true;
 	deferred_mode = true;
 	deferred_datetime = start_datetime;
@@ -154,7 +155,7 @@ void _PITimerBase::startDeferred(double interval_ms, PIDateTime start_datetime)


 void _PITimerBase::startDeferred(double interval_ms, double delay_ms) {
-	if (isRunning()) stop(true);
+	if (isRunning()) stop();
 	deferred_ = true;
 	deferred_mode = false;
 	deferred_delay = delay_ms;
@@ -163,11 +164,11 @@ void _PITimerBase::startDeferred(double interval_ms, double delay_ms) {
 }


-bool _PITimerBase::stop(bool wait) {
+bool _PITimerBase::stop() {
 	//piCout << GetCurrentThreadId() << "_PITimerBase::stop" << wait << isRunning();
 	if (!isRunning()) return true;
 	//piCout << "_PITimerBase::stopTimer ...";
-	running_ = !stopTimer(wait);
+	running_ = !stopTimer();
 	return !running_;
 }

@@ -177,19 +178,21 @@ bool _PITimerBase::stop(bool wait) {
 class _PITimerImp_Thread: public _PITimerBase {
 public:
 	_PITimerImp_Thread();
-	virtual ~_PITimerImp_Thread();
+	virtual ~_PITimerImp_Thread() {stop();}
 protected:
 	void prepareStart(double interval_ms);
 	bool threadFunc(); // returns true if repeat is needed
 	int wait_dt, wait_dd, wait_tick;
 private:
-	virtual bool startTimer(double interval_ms);
-	virtual bool stopTimer(bool wait);
+	bool startTimer(double interval_ms) override;
+	bool stopTimer() override;
 	static void threadFuncS(void * d) {((_PITimerImp_Thread*)d)->threadFunc();}
 	void adjustTimes();
+	bool smallWait(int ms);

 	PIThread thread_;
 	PISystemTime st_time, st_inc, st_wait, st_odt;
+	PIConditionVariable event;
 };


@@ -201,8 +204,8 @@ public:
 	virtual ~_PITimerImp_RT();
 protected:
 private:
-	virtual bool startTimer(double interval_ms);
-	virtual bool stopTimer(bool wait);
+	bool startTimer(double interval_ms) override;
+	bool stopTimer() override;

 	int ti;
 	_PITimerImp_RT_Private_ * priv;
@@ -213,7 +216,7 @@ private:
 class _PITimerImp_Pool: public _PITimerImp_Thread {
 public:
 	_PITimerImp_Pool();
-	virtual ~_PITimerImp_Pool() {stop(true);}
+	virtual ~_PITimerImp_Pool() {stop();}
 private:
 	class Pool: public PIThread {
 	public:
@@ -226,8 +229,8 @@ private:
 		explicit Pool();
 		virtual ~Pool();
 	};
-	virtual bool startTimer(double interval_ms);
-	virtual bool stopTimer(bool wait);
+	bool startTimer(double interval_ms) override;
+	bool stopTimer() override;
 };


@@ -235,19 +238,14 @@ private:

 _PITimerImp_Thread::_PITimerImp_Thread() {
 	thread_.setName("__S__PITimerImp_Thread::thread");
-	wait_dt = 100;
-	wait_dd = 200;
-	wait_tick = 10;
+	wait_dt = 1000;
+	wait_dd = 2000;
+	wait_tick = 1000;
 	//piCout << "_PITimerImp_Thread" << this << ", thread& =" << &thread_;
 	//piCout << "new _PITimerImp_Thread";
 }


-_PITimerImp_Thread::~_PITimerImp_Thread() {
-	stop(true);
-}
-
-
 void _PITimerImp_Thread::prepareStart(double interval_ms) {
 	if (interval_ms <= 0.) {
 		piCout << "Achtung! Start PITimer with interval <= 0!";
@@ -273,16 +271,14 @@ bool _PITimerImp_Thread::startTimer(double interval_ms) {
 }


-bool _PITimerImp_Thread::stopTimer(bool wait) {
-#ifndef FREERTOS
-	thread_.stop(wait);
-#else
+bool _PITimerImp_Thread::stopTimer() {
 	thread_.stop();
-	if (wait)
-		if (!thread_.waitForFinish(10))
-			if (thread_.isRunning())
-				thread_.terminate();
-#endif
+	event.notifyAll();
+	thread_.waitForFinish();
+//	if (wait)
+//		if (!thread_.waitForFinish(10))
+//			if (thread_.isRunning())
+//				thread_.terminate();
 	return true;
 }

@@ -299,10 +295,10 @@ bool _PITimerImp_Thread::threadFunc() {
 			dwt = st_time - PISystemTime::current(true);
 		if (wth > 0) {
 			if (dwt.toMilliseconds() > wth + 1.) {
-				piMSleep(wth);
+				smallWait(wth);
 				return false;
 			} else {
-				dwt.sleep();
+				if (!smallWait(dwt.toMilliseconds())) return false;
 				deferred_ = false;
 				st_time = PISystemTime::current(true);
 			}
@@ -321,11 +317,11 @@ bool _PITimerImp_Thread::threadFunc() {
 	}
 	if (wait_tick > 0) {
 		if (st_wait.toMilliseconds() > wait_tick + 1.) {
-			piMSleep(wait_tick);
+			smallWait(wait_tick);
 			return false;
 		} else {
 			//piCout << &thread_ << "sleep for" << st_wait;
-			st_wait.sleep();
+			if (!smallWait(st_wait.toMilliseconds())) return false;
 		}
 	} else {
 		if (st_wait.toMilliseconds() > 0.1)
@@ -366,6 +362,17 @@ void _PITimerImp_Thread::adjustTimes() {
 }


+bool _PITimerImp_Thread::smallWait(int ms) {
+	if (thread_.isStopping()) return false;
+	if (ms > 0) {
+		thread_.mutex().lock();
+		event.waitFor(thread_.mutex(), ms);
+		thread_.mutex().unlock();
+	}
+	return !thread_.isStopping();
+}
+
+


 #ifdef PIP_TIMER_RT
@@ -392,7 +399,7 @@ _PITimerImp_RT::_PITimerImp_RT() {


 _PITimerImp_RT::~_PITimerImp_RT() {
-	stop(true);
+	stop();
 	delete priv;
 }

@@ -425,7 +432,7 @@ bool _PITimerImp_RT::startTimer(double interval_ms) {
 }


-bool _PITimerImp_RT::stopTimer(bool wait) {
+bool _PITimerImp_RT::stopTimer() {
 	if (ti < 0) return true;
 	timer_delete(priv->tt);
 	ti = -1;
@@ -509,7 +516,7 @@ bool _PITimerImp_Pool::startTimer(double interval_ms) {
 }


-bool _PITimerImp_Pool::stopTimer(bool wait) {
+bool _PITimerImp_Pool::stopTimer() {
 	Pool::instance()->remove(this);
 	return true;
 }
@@ -621,7 +628,7 @@ void PITimer::init() const {
 void PITimer::destroy() {
 	if (!imp) return;
 	//piCout << this << "destroy" << imp;
-	imp->stop(false); ///BUG: WTF FreeRTOS segfault on this!
+	imp->stop();
 	delete imp;
 	imp = 0;
 }
@@ -711,31 +718,14 @@ void PITimer::startDeferred(double interval_ms, PIDateTime start_datetime) {

 bool PITimer::restart() {
 	init();
-	imp->stop(true);
+	imp->stop();
 	return imp->start();
 }


 bool PITimer::stop() {
-	return stop(true);
-}
-
-
-bool PITimer::stop(bool wait) {
 	init();
 	//piCout << this << "stop" << imp << wait;
-	return imp->stop(wait);
+	return imp->stop();
 }

-
-bool PITimer::waitForFinish(int timeout_msecs) {
-	if (timeout_msecs < 0) {
-		while (isRunning())
-			piMinSleep();
-		return true;
-	}
-	PITimeMeasurer tm;
-	while (isRunning() && tm.elapsed_m() < timeout_msecs)
-		piMinSleep();
-	return tm.elapsed_m() < timeout_msecs;
-}
--- a/libs/main/thread/pitimer.h
+++ b/libs/main/thread/pitimer.h
@@ -53,7 +53,7 @@ public:
 	void startDeferred(PIDateTime start_datetime) {startDeferred(interval_, start_datetime);}
 	void startDeferred(double interval_ms, PIDateTime start_datetime);
 	
-	bool stop(bool wait);
+	bool stop();
 	
 	typedef void(*TickFunc)(PITimer*);
 	TickFunc tfunc;
@@ -62,7 +62,7 @@ public:
 protected:
 	
 	virtual bool startTimer(double interval_ms) = 0;
-	virtual bool stopTimer(bool wait) = 0;
+	virtual bool stopTimer() = 0;
 	
 	double interval_, deferred_delay;
 	bool deferred_, deferred_mode; // mode: true - date, false - delay
@@ -161,10 +161,7 @@ public:
 	void startDeferred(double interval_ms, PIDateTime start_datetime);
 	
 	EVENT_HANDLER0(bool, stop);
-	EVENT_HANDLER1(bool, stop, bool, wait);
-	bool waitForFinish() {return waitForFinish(-1);}
-	bool waitForFinish(int timeout_msecs);
-	
+
 	//! \~english Set custom data
 	//! \~russian Установить данные, передаваемые в метод таймера
 	void setData(void * data_) {data_t = data_;}
--- a/main.cpp
+++ b/main.cpp
@@ -3,6 +3,7 @@
 #include "pibytearray.h"
 #include "pimathbase.h"
 #include "pijson.h"
+#include "piwaitevent_p.h"

 using namespace PICoutManipulators;

@@ -12,43 +13,217 @@ typedef PIVector<PIVariant> PIVariantVector;
 REGISTER_VARIANT(PIVariantMap);
 REGISTER_VARIANT(PIVariantVector);

-const char J[] =
-				 "[                                                                              \n"
-				 "{                                                                              \n"
-				 "    \"idFligth\":\"456123\",                                                   \n"
-				 "    \"FligthPath\": \"d:/orders/nicirt/BSK-52(BBR)/219031.001/EBN-NM-BBR.IMG\",\n"
-				 "    \"FligthDataPath\": \"\",                                                  \n"
-				 "    \"Passport\":                                                              \n"
-				 "        {                                                                      \n"
-				 "          \"id\": \"\",                                                        \n"
-				 "          \"TypePlane\": \"\",                                                 \n"
-				 "          \"FA_PLANEBORT\": \"Ka52-10\"                                        \n"
-				 "        }                                                                      \n"
-				 "  }, [1.1,2,3,4,{\"a\":null},{\"bool\":true,\"bool2\":false}]                  \n"
-				 "]                                                                              \n"
-;
+#ifdef WINDOWS
+#  include <namedpipeapi.h>
+#  include <handleapi.h>
+#  include <fileapi.h>
+#  include <processthreadsapi.h>
+typedef HANDLE pipe_type;
+#else
+#  include <unistd.h>
+typedef int pipe_type;
+#endif

+struct Pipe {
+	pipe_type fd_read = 0;
+	pipe_type fd_write = 0;
+	void create() {
+#ifdef WINDOWS
+		CreatePipe(&fd_read, &fd_write, NULL, 0);
+#else
+		pipe((int*)this);
+#endif
+	}
+	void destoy() {
+#ifdef WINDOWS
+		CloseHandle(fd_read);
+		CloseHandle(fd_write);
+#else
+		close(fd_read);
+		close(fd_write);
+#endif
+	}
+	int read(void * d, int s) {
+#ifdef WINDOWS
+		DWORD ret(0);
+		ReadFile(fd_read, d, s, &ret, NULL);
+		return ret;
+#else
+		return ::read(fd_read, d, s);
+#endif
+	}
+	int write(void * d, int s) {
+#ifdef WINDOWS
+		DWORD ret(0);
+		WriteFile(fd_write, d, s, &ret, NULL);
+		return ret;
+#else
+		return ::write(fd_write, d, s);
+#endif
+	}
+};
+
+constexpr int count = 4;
+Pipe pipes[count];
+
+class T: public PIThread {
+public:
+	T(int index): PIThread() {ind = index; pipe = pipes[index];}
+	void run() {
+		PIByteArray data(1024);
+		piCout << "[T"<<ind<<"] start";
+		int readed = pipe.read(data.data(), data.size());
+		piCout << "[T"<<ind<<"] readed" << readed << errorString();
+		piCout << "[T"<<ind<<"] end";
+	}
+	int ind;
+	Pipe pipe;
+};
+
+PITimeMeasurer tm;
+void phase(const char * msg) {
+	piCout << "";
+	piCout << piRound(tm.elapsed_s() * 10) / 10. << "s" << msg;
+}

 int main(int argc, char * argv[]) {
-	struct {
-		PIString name;
-		PIString surname;
-		PIString email;
-	} persons[] = {
-		{"Ivan", "Ivanov", "ivan@pip.ru"},
-		{"Igor", "Igorevich", "igor@pip.ru"},
-		{"Andrey", "Andreevich", "andrey@pip.ru"}
-	};
-	PIJSON obj;
-	PIJSON json;
-	int index = 0;
-	for (const auto & p: persons) {
-		obj["index"] = index++;
-		obj["name"] = p.name;
-		obj["surname"] = p.surname;
-		obj["email"] = p.email;
-		json << obj;
+	/*piCout << "main";
+
+	PITimer timer;
+	timer.setSlot([](){
+		static int cnt = 0;
+		piCout << "tick" << ++cnt;
+	});
+	timer.start(500);
+
+	piSleep(1.12);
+	piCout << "end";
+	PITimeMeasurer tm;
+	timer.stop();
+	double tm_ms = tm.elapsed_m();
+	piCout << "stop took" << tm_ms;*/
+
+	PIWaitEvent event;
+	event.create();
+	tm.reset();
+	PIThread::runOnce([&event](){
+		//piMSleep(100);
+		piCout << "interrupt";
+		//event.interrupt();
+	});
+	event.sleep(2010000);
+	double tm_ms = tm.elapsed_m();
+	piCout << "waited for" << tm_ms;
+	return 0;
+
+	/*for (int i = 0; i < count; ++i)
+		pipes[i].create();
+
+	PIVector<T*> threads;
+	piCout << "main start";
+	for (int i = 0; i < count; ++i) {
+		T * t = new T(i);
+		threads << t;
+		t->startOnce();
 	}
-	piCout << json;
+	piMSleep(100);
+	for (int i = 0; i < count; ++i) {
+		//pipes[i].write((void*)"string", 7);
+		piMSleep(500);
+	}
+	piCout << "main wait";
+	for (int i = 0; i < count; ++i) {
+		threads[i]->interrupt();
+		threads[i]->waitForFinish();
+		piCout << "main T" << i << "done";
+	}
+	piCout << "main end";
+	for (int i = 0; i < count; ++i) {
+		pipes[i].destoy();
+		delete threads[i];
+	}*/
+
+	//PIEthernet eth(PIEthernet::UDP), seth(PIEthernet::UDP);
+	//eth.setReadAddress("127.0.0.1", 50000);
+	//eth.startThreadedRead();
+	//piCout << eth.open();
+
+	PIByteArray req = PIByteArray::fromHex("205e011000000000ef");
+	PISerial ser;
+	ser.setSpeed(PISerial::S9600);
+	ser.setOption(PIIODevice::BlockingRead, false);
+	ser.setVTime(200);
+	ser.open("COM3");
+	CONNECTL(&ser, threadedReadEvent, ([](const uchar * data, ssize_t size){
+		piCout << "*ser readed" << size;
+	}));
+	PIThread thread;
+	thread.start([&](void*){
+		piCout << "[T] start";
+		PIByteArray data = ((PIIODevice*)&ser)->read(1024);
+		piCout << "[T] readed" << data.size();// << errorString();
+		piCout << "[T] end";
+	}, 200);
+	//ser.startThreadedRead();
+
+	piSleep(1);
+	ser.write(req);
+	phase("Send");
+
+	piSleep(2);
+	phase("End");
+
+	/*
+	PIEthernet eth(PIEthernet::TCP_Client), seth(PIEthernet::TCP_Server), * server_client = nullptr;
+
+	seth.listen("127.0.0.1", 50000, true);
+	//seth.startThreadedRead();
+	CONNECTL(&seth, newConnection, ([&server_client](PIEthernet * e){
+		server_client = e;
+		e->setName("TCP SC");
+		piCout << "newConn" << e;
+		CONNECTL(e, threadedReadEvent, ([](const uchar * data, ssize_t size){
+			piCout << "*TCP SC* readed" << size;
+		}));
+		CONNECTL(e, disconnected, ([](bool error){
+			piCout << "*TCP SC* disconnected" << error;
+		}));
+		e->startThreadedRead();
+	}));
+
+	eth.setName("TCP CC");
+	//eth.setParameter(PIEthernet::KeepConnection, false);
+	CONNECTL(&eth, connected, ([&eth](){
+		piCout << "*TCP CC* connected";
+		eth.send("byte", 5);
+	}));
+	CONNECTL(&eth, disconnected, ([](bool error){
+		piCout << "*TCP CC* disconnected" << error;
+	}));
+
+	piMSleep(500);
+	phase("Connect");
+	eth.connect("127.0.0.1", 50000);
+	eth.startThreadedRead();
+
+	piMSleep(500);
+	phase("Send 5");
+	piCout << "c-ing" << eth.isConnecting();
+	piCout << "c- ed" << eth.isConnected();
+	eth.send("byte", 5);
+
+	piMSleep(500);
+	phase("Send 6");
+	eth.send("bytes", 6);
+
+	piMSleep(500);
+	phase("Disconnect");
+	if (server_client)
+		server_client->close();
+	//eth.close();
+
+	piMSleep(500);
+	phase("END");
+	*/
 	return 0;
 }
--- a/main_picloud_test.cpp
+++ b/main_picloud_test.cpp
@@ -11,15 +11,15 @@ int main(int argc, char * argv[]) {
 	PICloudClient c("127.0.0.1:10101");
 //	c.setReopenEnabled(true);
 	PICloudServer s("127.0.0.1:10101");
-	PIVector<PICloudServer::Client *> clients;
+	auto clients = new PIVector<PICloudServer::Client *>();
 	CONNECTL(&tm, tickEvent, ([&](void *, int){
 		if (c.isConnected()) {
 			PIString str = "ping";
 			piCout << "[Client] send:" << str;
 			c.write(str.toByteArray());
 		}
-		if (s.isRunning()) {
-			for (auto cl : clients) {
+		if (s.isThreadedRead()) {
+			for (auto cl : *clients) {
 				if (cl->isOpened()) {
 					PIString str = "ping_S";
 					piCout << "[Server] send to" << cl << ":" << str;
@@ -40,7 +40,7 @@ int main(int argc, char * argv[]) {
 	CONNECTL(&c, disconnected, ([](){piCout << "disconnected";}));
 	CONNECTL(&s, newConnection, ([&](PICloudServer::Client * cl){
 		piCout << "[Server] new client:" << cl;
-		clients << cl;
+		clients->append(cl);
 		CONNECTL(cl, threadedReadEvent, ([cl, &rnd](const uchar * readed, ssize_t size){
 			PIByteArray ba(readed, size);
 			PIString str = PIString(ba);
@@ -51,9 +51,10 @@ int main(int argc, char * argv[]) {
 			}
 		}));
 		CONNECTL(cl, closed, ([&clients, cl](){
+			piCout << "[Server] client closed ..." << cl;
 			cl->stop();
-			clients.removeAll(cl);
-			cl->deleteLater();
+			clients->removeAll(cl);
+			piCout << "[Server] client closed ok" << cl;
 		}));
 		cl->startThreadedRead();
 	}));
--- a/utils/cloud_dispatcher/dispatcherclient.cpp
+++ b/utils/cloud_dispatcher/dispatcherclient.cpp
@@ -3,7 +3,6 @@


 DispatcherClient::DispatcherClient(PIEthernet * eth_, int id) : authorised(false), eth(eth_), streampacker(eth_), tcp(&streampacker), client_id(id) {
-	CONNECTU(&disconnect_tm, tickEvent, eth, close);
 	CONNECTU(&streampacker, packetReceiveEvent, this, readed);
 	CONNECTU(eth, disconnected, this, disconnected);
 	piCoutObj << "client connected" << client_id << eth->sendAddress();
@@ -12,7 +11,6 @@ DispatcherClient::DispatcherClient(PIEthernet * eth_, int id) : authorised(false

 void DispatcherClient::start() {
 	eth->startThreadedRead();
-	//disconnect_tm.start(10000);
 }


@@ -27,18 +25,18 @@ PIString DispatcherClient::address() {


 void DispatcherClient::close() {
-	eth->softStopThreadedRead();
-	eth->close();
+	eth->stopAndWait();
 }


 void DispatcherClient::sendConnected(uint client_id) {
-	//piCoutObj << "sendConnected";
+	piCoutObj << "sendConnected" << client_id;
 	tcp.sendConnected(client_id);
 }


 void DispatcherClient::sendDisconnected(uint client_id) {
+	piCoutObj << "sendDisconnected" << client_id;
 	tcp.sendDisconnected(client_id);
 }

@@ -61,7 +59,7 @@ void DispatcherClient::authorise(bool ok) {


 void DispatcherClient::disconnected(bool withError) {
-	//piCoutObj << "client disconnected" << eth->sendAddress();
+	piCoutObj << "client disconnected" << withError << eth->sendAddress();
 	disconnectEvent(this);
 }

@@ -70,16 +68,18 @@ void DispatcherClient::readed(PIByteArray & ba) {
 	PIPair<PICloud::TCP::Type, PICloud::TCP::Role> hdr = tcp.parseHeader(ba);
 //	piCoutObj << "readed" << hdr.first << hdr.second;
 	if (hdr.first == PICloud::TCP::InvalidType) {
-		disconnected(true);
 		piCoutObj << "invalid message";
+		disconnected(true);
 		return;
 	}
 	if (authorised) {
 		if (hdr.second == tcp.role()) {
 			switch (hdr.first) {
 			case PICloud::TCP::Connect:
+				piCoutObj << "PICloud::TCP::Connect";
 			return;
 			case PICloud::TCP::Disconnect:
+				piCoutObj << "PICloud::TCP::Disconnect";
 				disconnected(false);
 			return;
 			case PICloud::TCP::Data:
@@ -113,9 +113,11 @@ void DispatcherClient::readed(PIByteArray & ba) {
 			return;
 		}
 		case PICloud::TCP::Disconnect:
+			piCoutObj << "unauthorised PICloud::TCP::Disconnect";
 			disconnected(false);
 		return;
 		default:
+			piCoutObj << "authorised invalid message";
 			disconnected(true);
 		return;
 		}
--- a/utils/cloud_dispatcher/dispatcherclient.h
+++ b/utils/cloud_dispatcher/dispatcherclient.h
@@ -33,7 +33,6 @@ private:
 	EVENT_HANDLER1(void, readed, PIByteArray &, data);
 	EVENT_HANDLER1(void, disconnected, bool, withError);

-	PITimer disconnect_tm;
 	std::atomic_bool authorised;
 	PIEthernet * eth;
 	PIStreamPacker streampacker;
--- a/utils/cloud_dispatcher/dispatcherserver.cpp
+++ b/utils/cloud_dispatcher/dispatcherserver.cpp
@@ -21,7 +21,7 @@ DispatcherServer::~DispatcherServer() {

 void DispatcherServer::start() {
 	eth.listen(true);
-	timeout_timer.start(5000);
+	timeout_timer.start(2000);
 	piCoutObj << "server started" << eth.readAddress();
 }

@@ -181,7 +181,7 @@ void  DispatcherServer::disconnectClient(DispatcherClient *client) {
 		//piCoutObj << "INVALID client" << client;
 		return;
 	}
-	piCoutObj << "remove" << client->clientId();
+	piCoutObj << "remove ..." << client->clientId();
 	map_mutex.lock();
 	clients.removeAll(client);
 	rm_clients.removeAll(client);
@@ -206,9 +206,10 @@ void  DispatcherServer::disconnectClient(DispatcherClient *client) {
 		cc->removeClient(client);
 		index_c_clients.remove(client);
 	}
-	client->close();
+	//client->close();
 	rmrf_clients << client;
 	map_mutex.unlock();
+	piCoutObj << "remove done" << client->clientId();
 }


--- a/utils/system_daemon/daemon.cpp
+++ b/utils/system_daemon/daemon.cpp
@@ -24,7 +24,7 @@ Daemon::Remote::Remote(const PIString & n): PIThread() {
 Daemon::Remote::~Remote() {
 	shellClose();
 	ft.stop();
-	stop(true);
+	stopAndWait();
 }


@@ -41,7 +41,6 @@ void Daemon::Remote::shellClose() {
 	if (!term) return;
 	piCoutObj << "shell close";
 	term_timer.stop();
-	term_timer.waitForFinish(1000);
 	term->destroy();
 	delete term;
 	term = 0;
@@ -331,6 +330,7 @@ Daemon::~Daemon() {
 		delete r;
 	}
 	remotes.clear();
+	delete _self;
 }