first try, works

CMakeLists.txt

@@ -92,7 +92,7 @@ set(PIP_UTILS_LIST)
 set(PIP_TESTS_LIST)
 set(PIP_EXPORTS)
 
-set(PIP_SRC_MODULES "console;crypt;compress;usb;fftw;opencl;io_utils;cloud;lua")
+set(PIP_SRC_MODULES "console;crypt;compress;usb;fftw;opencl;io_utils;client_server;cloud;lua")
 foreach(_m ${PIP_SRC_MODULES})
 	set(PIP_MSG_${_m} "no")
 endforeach()
@@ -392,6 +392,7 @@ if (NOT CROSSTOOLS)
 		pip_find_lib(sodium)
 		if(sodium_FOUND)
 			pip_module(crypt "sodium" "PIP crypt support" "" "" "")
+			pip_module(client_server "pip_io_utils" "PIP client-server helper" "" "" "")
 			pip_module(cloud "pip_io_utils" "PIP cloud support" "" "" "")
 		endif()
 
@@ -480,7 +481,7 @@ if (NOT CROSSTOOLS)
 			#target_link_libraries(pip_plugin pip)
 
 			add_executable(pip_test "main.cpp")
-			target_link_libraries(pip_test pip pip_io_utils)
+			target_link_libraries(pip_test pip pip_io_utils pip_client_server)
 			if(sodium_FOUND)
 				add_executable(pip_cloud_test "main_picloud_test.cpp")
 				target_link_libraries(pip_cloud_test pip_cloud)
@@ -585,7 +586,7 @@ if ((NOT PIP_FREERTOS) AND (NOT CROSSTOOLS))
 	find_package(Doxygen)
 	if(DOXYGEN_FOUND)
 		set(DOXY_DEFINES "${PIP_EXPORTS}")
-		foreach (_m "console" "usb" "compress" "crypt" "cloud" "fftw" "opencl" "io_utils" "lua")
+		foreach (_m "console" "usb" "compress" "crypt" "client_server" "cloud" "fftw" "opencl" "io_utils" "lua")
 			string(TOUPPER "${_m}" _mdef)
 			list(APPEND DOXY_DEFINES "PIP_${_mdef}_EXPORT")
 		endforeach()

cmake/FindPIP.cmake

@@ -9,6 +9,7 @@ Create imported targets:
   * PIP::FFTW
   * PIP::OpenCL
   * PIP::IOUtils
+  * PIP::ClientServer
   * PIP::Cloud
   * PIP::Lua
 
@@ -22,7 +23,7 @@ include(SHSTKMacros)
 
 shstk_set_find_dirs(PIP)
 
-set(__libs "usb;crypt;console;fftw;compress;io_utils;opencl;cloud;lua")
+set(__libs "usb;crypt;console;fftw;compress;opencl;io_utils;client_server;cloud;lua")
 
 if (BUILDING_PIP)
 	#set(_libs "pip;pip_usb;pip_console;pip_crypt;pip_fftw;pip_compress;pip_opencl;pip_io_utils;pip_cloud;pip_lua")
@@ -90,6 +91,7 @@ set(__module_fftw      FFTW     )
 set(__module_compress       Compress    )
 set(__module_opencl         OpenCL      )
 set(__module_io_utils       IOUtils     )
+set(__module_client_server  ClientServer)
 set(__module_cloud          Cloud       )
 set(__module_lua            Lua         )
 
@@ -99,7 +101,8 @@ foreach (_l ${__libs})
 	set(__libs_${_l} "")
 endforeach()
 
-set(__deps_io_utils  "PIP::Crypt")
+set(__deps_io_utils      "PIP::Crypt"  )
+set(__deps_client_server "PIP::IOUtils")
 set(__deps_cloud         "PIP::IOUtils")
 
 

libs/client_server/piclient_server_client.cpp

@@ -0,0 +1,116 @@
+/*
+    PIP - Platform Independent Primitives
+	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 "piclient_server_client.h"
+
+#include "piethernet.h"
+#include "piliterals_time.h"
+#include "pitime.h"
+
+
+PIClientServer::Client::Client() {}
+
+
+PIClientServer::Client::~Client() {
+	stop();
+	if (own_tcp) piDeleteSafety(tcp);
+}
+
+
+void PIClientServer::Client::createNew() {
+	if (tcp) return;
+	tcp = new PIEthernet(PIEthernet::TCP_Client);
+	tcp->setParameter(PIEthernet::KeepConnection, true);
+	own_tcp = true;
+	init();
+}
+
+
+void PIClientServer::Client::connect(PINetworkAddress addr) {
+	if (!tcp || !own_tcp) return;
+	stop();
+	tcp->connect(addr, true);
+	tcp->startThreadedRead();
+	piCout << "Connect to" << addr.toString();
+}
+
+
+void PIClientServer::Client::stop() {
+	if (!tcp) return;
+	can_write = false;
+	tcp->interrupt();
+	tcp->stopAndWait(10_s);
+	if (tcp->isThreadedRead()) tcp->terminateThreadedRead();
+	stream.clear();
+}
+
+
+int PIClientServer::Client::write(const void * d, const size_t s) {
+	if (!tcp) return -1;
+	if (!can_write) return 0;
+	PIMutexLocker guard(write_mutex);
+	piCout << "... send ...";
+	stream.send(PIByteArray(d, s));
+	piCout << "... send ok";
+	return s;
+}
+
+
+void PIClientServer::Client::createForServer(PIEthernet * tcp_) {
+	tcp = tcp_;
+	tcp->setParameter(PIEthernet::KeepConnection, false);
+	init();
+}
+
+
+void PIClientServer::Client::init() {
+	if (!tcp) return;
+	CONNECTL(&stream, sendRequest, [this](const PIByteArray & ba) {
+		if (!can_write) return;
+		tcp->send(ba);
+		// piMSleep(1);
+	});
+	CONNECTL(&stream, packetReceiveEvent, [this](PIByteArray & ba) {
+		if (readed_func) readed_func(ba);
+		readed(ba);
+	});
+	CONNECTL(tcp, threadedReadEvent, [this](const uchar * readed, ssize_t size) {
+		if (!can_write) return;
+		stream.received(readed, size);
+	});
+	CONNECTL(tcp, connected, [this]() {
+		can_write = true;
+		piCout << "Connected";
+		connected();
+	});
+	CONNECTL(tcp, disconnected, [this](bool) {
+		can_write = false;
+		stream.clear();
+		piCout << "Disconnected";
+		disconnected();
+	});
+}
+
+
+void PIClientServer::Client::destroy() {
+	can_write = false;
+	write_mutex.lock();
+	piDeleteSafety(tcp);
+	aboutDelete();
+	piCout << "Destroyed";
+}

libs/client_server/piclient_server_server.cpp

@@ -0,0 +1,106 @@
+/*
+    PIP - Platform Independent Primitives
+	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 "piclient_server_server.h"
+
+#include "piclient_server_client.h"
+#include "piethernet.h"
+#include "piliterals_time.h"
+
+
+PIClientServer::Server::Server() {
+	tcp_server     = new PIEthernet(PIEthernet::TCP_Server);
+	clean_thread   = new PIThread();
+	client_factory = [] { return new Client(); };
+	CONNECTL(tcp_server, newConnection, [this](PIEthernet * c) {
+		PIMutexLocker guard(clients_mutex);
+		if (clients.size_s() >= max_clients) {
+			piCout << "Server::newConnection overflow clients count";
+			delete c;
+			return;
+		}
+		auto sc = client_factory();
+		if (!sc) {
+			piCout << "ClientFactory returns nullptr!";
+			return;
+		}
+		sc->createForServer(c);
+		newClient(sc);
+	});
+
+	clean_thread->start(
+		[this]() {
+			PIVector<Client *> to_delete;
+			clients_mutex.lock();
+			for (auto c: clients) {
+				const PIEthernet * eth = c->getTCP();
+				if (!eth) continue;
+				if (eth->isConnected()) continue;
+				c->can_write = false;
+				to_delete << c;
+			}
+			for (auto c: to_delete)
+				clients.removeOne(c);
+			clients_mutex.unlock();
+			for (auto c: to_delete) {
+				c->destroy();
+				delete c;
+			}
+		},
+		5_Hz);
+}
+
+
+PIClientServer::Server::~Server() {
+	clean_thread->stopAndWait();
+	piDeleteSafety(clean_thread);
+	stopServer();
+	for (auto c: clients) {
+		c->destroy();
+		delete c;
+	}
+	piDeleteSafety(tcp_server);
+}
+
+
+void PIClientServer::Server::listen(PINetworkAddress addr) {
+	if (!tcp_server) return;
+	stopServer();
+	tcp_server->listen(addr, true);
+	// piCout << "Listen on" << addr.toString();
+}
+
+
+void PIClientServer::Server::setMaxClients(int new_max_clients) {
+	max_clients = new_max_clients;
+}
+
+
+void PIClientServer::Server::stopServer() {
+	if (!tcp_server) return;
+	tcp_server->stopAndWait();
+}
+
+
+void PIClientServer::Server::newClient(Client * c) {
+	c->readed_func = [this, c](PIByteArray ba) { readed(c, ba); };
+	clients << c;
+	c->tcp->startThreadedRead();
+	c->connected();
+	piCout << "New client";
+}

libs/main/client_server/piclient_server_client.h

@@ -0,0 +1,78 @@
+/*! \file piclient_server_client.h
+ * \ingroup ClientServer
+ * \~\brief
+ * \~english
+ * \~russian
+ */
+/*
+    PIP - Platform Independent Primitives
+	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 piclient_server_client_H
+#define piclient_server_client_H
+
+#include "pinetworkaddress.h"
+#include "pip_client_server_export.h"
+#include "pistreampacker.h"
+
+class PIEthernet;
+
+namespace PIClientServer {
+
+class Server;
+
+class PIP_CLIENT_SERVER_EXPORT Client: public PIObject {
+	friend class Server;
+	NO_COPY_CLASS(Client);
+	PIOBJECT(Client);
+
+public:
+	Client();
+	virtual ~Client();
+
+	void createNew();
+
+	void connect(PINetworkAddress addr);
+	const PIEthernet * getTCP() const { return tcp; }
+
+	void stop();
+
+	int write(const void * d, const size_t s);
+	int write(const PIByteArray & ba) { return write(ba.data(), ba.size()); }
+
+protected:
+	virtual void readed(PIByteArray data) {}
+	virtual void connected() {}
+	virtual void disconnected() {}
+	virtual void aboutDelete() {}
+
+private:
+	void createForServer(PIEthernet * tcp_);
+	void init();
+	void destroy();
+
+	bool own_tcp               = false;
+	std::atomic_bool can_write = {true};
+	PIEthernet * tcp           = nullptr;
+	PIStreamPacker stream;
+	mutable PIMutex write_mutex;
+	std::function<void(PIByteArray data)> readed_func = nullptr;
+};
+
+} // namespace PIClientServer
+
+#endif

libs/main/client_server/piclient_server_server.h

@@ -0,0 +1,72 @@
+/*! \file piclient_server_server.h
+ * \ingroup ClientServer
+ * \~\brief
+ * \~english
+ * \~russian
+ */
+/*
+    PIP - Platform Independent Primitives
+	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 piclient_server_server_H
+#define piclient_server_server_H
+
+#include "pimutex.h"
+#include "pinetworkaddress.h"
+#include "pip_client_server_export.h"
+
+class PIEthernet;
+class PIThread;
+
+namespace PIClientServer {
+
+class Client;
+
+class PIP_CLIENT_SERVER_EXPORT Server {
+public:
+	Server();
+	virtual ~Server();
+
+	void listen(PINetworkAddress addr);
+	void listenAll(ushort port) { listen({0, port}); }
+
+	int getMaxClients() const { return max_clients; }
+	void setMaxClients(int new_max_clients);
+
+	void setClientFactory(std::function<Client *()> f) { client_factory = f; }
+
+	void write(Client * c, const PIByteArray & data);
+
+protected:
+	virtual void readed(Client * c, PIByteArray data) {}
+
+private:
+	void stopServer();
+	void newClient(Client * c);
+
+	std::function<Client *()> client_factory;
+	PIEthernet * tcp_server = nullptr;
+	PIThread * clean_thread = nullptr;
+	PIVector<Client *> clients;
+	PIMutex clients_mutex;
+
+	int max_clients = 1000;
+};
+
+} // namespace PIClientServer
+
+#endif

libs/main/console/pikbdlistener.h

@@ -31,7 +31,8 @@
 
 #define WAIT_FOR_EXIT                 \
 	while (!PIKbdListener::exiting)   \
-		piMSleep(PIP_MIN_MSLEEP * 5); // TODO: rewrite with condvar
+		piMSleep(PIP_MIN_MSLEEP * 5); \
+	if (PIKbdListener::instance()) PIKbdListener::instance()->stopAndWait();
 
 
 class PIP_EXPORT PIKbdListener: public PIThread {

libs/main/io_devices/piethernet.cpp

@@ -777,6 +777,9 @@ ssize_t PIEthernet::writeDevice(const void * data, ssize_t max_size) {
 				closeSocket(sock);
 				init();
 				disconnected(true);
+				if (params[KeepConnection]) {
+					connect();
+				}
 			}
 		};
 		if (!isOptionSet(BlockingWrite)) {

main.cpp

@@ -1,4 +1,6 @@
 #include "pibytearray.h"
+#include "piclient_server_client.h"
+#include "piclient_server_server.h"
 #include "picodeparser.h"
 #include "piiostream.h"
 #include "pijson.h"
@@ -16,22 +18,51 @@ enum MyEvent {
 	meIntString,
 };
 
-PITimeMeasurer tm;
-std::atomic_int cnt = {0};
-void tfunc(int delim) {
-	// piCout << "tick with delimiter" << delim;
-	++cnt;
-};
-void tfunc4(int delim) {
-	piCout << "tick4 with delimiter" << delim;
+PIKbdListener kbd;
+
+
+class MyClient: public PIClientServer::Client {
+protected:
+	void readed(PIByteArray data) override { piCout << "readed" << (data.size()); }
+	void connected() override {
+		send_thread.start(
+			[this] {
+				// write((PIString::fromNumber(++counter)).toUTF8());
+				PIByteArray ba(64_MiB);
+				write(ba);
+			},
+			2_Hz);
+	}
+	PIThread send_thread;
+	int counter = 0;
 };
 
 
 int main(int argc, char * argv[]) {
-	uint v = 0xaabbccdd;
-	piCout << Hex << v << piChangedEndian(v);
-	piChangeEndianBinary(&v, sizeof(v));
-	piCout << Hex << v << piChangedEndian(v);
+	kbd.enableExitCapture();
+
+	piCout << argc;
+
+	PIClientServer::Server * s = nullptr;
+	PIClientServer::Client * c = nullptr;
+
+	if (argc > 1) {
+		// server
+		s = new PIClientServer::Server();
+		s->setClientFactory([] { return new MyClient(); });
+		s->listenAll(12345);
+	} else {
+		// client
+		c = new MyClient();
+		c->createNew();
+		c->connect(PINetworkAddress::resolve("127.0.0.1", 12345));
+	}
+
+	WAIT_FOR_EXIT;
+
+	piDeleteSafety(s);
+	piDeleteSafety(c);
+
 	return 0;
 	/*PIPackedTCP * tcp_s =
 		PIIODevice::createFromFullPath("ptcp://s::8000")->cast<PIPackedTCP>(); // new PIPackedTCP(PIPackedTCP::Server, {"0.0.0.0:8000"});