Redid background task interface, used it to async send client packets

common/CMakeLists.txt

@@ -72,7 +72,6 @@ SET(common_sources
 	unix.cpp
 	xml_parser.cpp
 	platform.cpp
-	event/event_loop.cpp
 	json/jsoncpp.cpp
 	net/console_server.cpp
 	net/console_server_connection.cpp
@@ -207,8 +206,8 @@ SET(common_headers
 	version.h
 	xml_parser.h
 	zone_numbers.h
-	event/background_task.h
 	event/event_loop.h
+	event/task.h
 	event/timer.h
 	json/json.h
 	json/json-forwards.h
@@ -265,10 +264,9 @@ SET(common_headers
 )
 
 SOURCE_GROUP(Event FILES
-	event/background_task.h
-	event/event_loop.cpp
 	event/event_loop.h
 	event/timer.h
+	event/task.h
 )
 
 SOURCE_GROUP(Json FILES

common/event/background_task.h

@@ -1,42 +0,0 @@
-#pragma once
-#include <functional>
-#include "../any.h"
-#include "event_loop.h"
-
-namespace EQ {
-	class BackgroundTask
-	{
-	public:
-		typedef std::function<void(EQEmu::Any&)> BackgroundTaskFunction;
-		struct BackgroundTaskBaton
-		{
-			BackgroundTaskFunction fn;
-			BackgroundTaskFunction on_finish;
-			EQEmu::Any data;
-		};
-
-		BackgroundTask(BackgroundTaskFunction fn, BackgroundTaskFunction on_finish, EQEmu::Any data) {
-			uv_work_t *m_work = new uv_work_t;
-			memset(m_work, 0, sizeof(uv_work_t));
-			BackgroundTaskBaton *baton = new BackgroundTaskBaton();
-			baton->fn = fn;
-			baton->on_finish = on_finish;
-			baton->data = data;
-		
-			m_work->data = baton;
-			uv_queue_work(EventLoop::Get().Handle(), m_work, [](uv_work_t* req) {
-				BackgroundTaskBaton *baton = (BackgroundTaskBaton*)req->data;
-				baton->fn(baton->data);
-			}, [](uv_work_t* req, int status) {
-				BackgroundTaskBaton *baton = (BackgroundTaskBaton*)req->data;
-				baton->on_finish(baton->data);
-				delete baton;
-				delete req;
-			});
-		}
-
-		~BackgroundTask() {
-
-		}
-	};
-}

common/event/task.h

@@ -0,0 +1,100 @@
+#pragma once
+#include <functional>
+#include <exception>
+#include "event_loop.h"
+#include "../any.h"
+
+namespace EQ {
+	class Task
+	{
+	public:
+		typedef std::function<void(const EQEmu::Any&)> ResolveFn;
+		typedef std::function<void(const std::exception&)> RejectFn;
+		typedef std::function<void()> FinallyFn;
+		typedef std::function<void(ResolveFn, RejectFn)> TaskFn;
+		struct TaskBaton
+		{
+			TaskFn fn;
+			ResolveFn on_then;
+			RejectFn on_catch;
+			FinallyFn on_finally;
+			bool has_result;
+			EQEmu::Any result;
+			bool has_error;
+			std::exception error;
+		};
+
+		Task(TaskFn fn) {
+			m_fn = fn;
+		}
+
+		~Task() {
+
+		}
+
+		Task& Then(ResolveFn fn) {
+			m_then = fn;
+			return *this;
+		}
+
+		Task& Catch(RejectFn fn) {
+			m_catch = fn;
+			return *this;
+		}
+
+		Task& Finally(FinallyFn fn) {
+			m_finally = fn;
+			return *this;
+		}
+
+		void Run() {
+			uv_work_t *m_work = new uv_work_t;
+			memset(m_work, 0, sizeof(uv_work_t));
+			TaskBaton *baton = new TaskBaton();
+			baton->fn = m_fn;
+			baton->on_then = m_then;
+			baton->on_catch = m_catch;
+			baton->on_finally = m_finally;
+			baton->has_result = false;
+			baton->has_error = false;
+
+			m_work->data = baton;
+
+			uv_queue_work(EventLoop::Get().Handle(), m_work, [](uv_work_t* req) {
+				TaskBaton *baton = (TaskBaton*)req->data;
+
+				baton->fn([baton](const EQEmu::Any& result) {
+					baton->has_error = false;
+					baton->has_result = true;
+					baton->result = result;
+				}, [baton](const std::exception &err) {
+					baton->has_error = true;
+					baton->has_result = false;
+					baton->error = err;
+				});
+			}, [](uv_work_t* req, int status) {
+				TaskBaton *baton = (TaskBaton*)req->data;
+
+				if (baton->has_error && baton->on_catch) {
+					baton->on_catch(baton->error);
+				}
+				else if (baton->has_result && baton->on_then) {
+					baton->on_then(baton->result);
+				}
+
+				if (baton->on_finally) {
+					baton->on_finally();
+				}
+
+				delete baton;
+				delete req;
+			});
+		}
+
+	private:
+		TaskFn m_fn;
+		ResolveFn m_then;
+		RejectFn m_catch;
+		FinallyFn m_finally;
+	};
+}

common/net/daybreak_connection.cpp

@@ -1,5 +1,6 @@
 #include "daybreak_connection.h"
 #include "../event/event_loop.h"
+#include "../event/task.h"
 #include "../eqemu_logsys.h"
 #include "../data_verification.h"
 #include "crc32.h"
@@ -1045,10 +1046,6 @@ void EQ::Net::DaybreakConnection::ProcessResend(int stream)
 				resends++;
 			}
 		}
-
-		if (resends >= m_owner->m_options.resends_per_connection_cycle) {
-			return;
-		}
 	}
 }
 
@@ -1185,80 +1182,95 @@ void EQ::Net::DaybreakConnection::SendKeepAlive()
 void EQ::Net::DaybreakConnection::InternalSend(Packet &p)
 {
 	m_last_send = Clock::now();
-	
 	auto send_func = [](uv_udp_send_t* req, int status) {
 		delete[](char*)req->data;
 		delete req;
 	};
-	
+
 	if (PacketCanBeEncoded(p)) {
-		DynamicPacket out;
-		out.PutPacket(0, p);
-	
-		for (int i = 0; i < 2; ++i) {
-			switch (m_encode_passes[i]) {
-				case EncodeCompression:
-					if(out.GetInt8(0) == 0) 
-						Compress(out, DaybreakHeader::size(), out.Length() - DaybreakHeader::size());
-					else
-						Compress(out, 1, out.Length() - 1);
-					break;
-				case EncodeXOR:
-					if (out.GetInt8(0) == 0)
-						Encode(out, DaybreakHeader::size(), out.Length() - DaybreakHeader::size());
-					else
-						Encode(out, 1, out.Length() - 1);
-					break;
-				default:
-					break;
+		DynamicPacket *out = new DynamicPacket();
+		out->PutPacket(0, p);
+
+		auto sp = shared_from_this();
+		EQ::Task([sp, out](EQ::Task::ResolveFn resolve, EQ::Task::RejectFn reject) {
+			
+			auto encode_passes = sp->GetEncodePasses();
+			for (int i = 0; i < 2; ++i) {
+				switch (encode_passes[i]) {
+					case EncodeCompression:
+						if(out->GetInt8(0) == 0) 
+							sp->Compress(*out, DaybreakHeader::size(), out->Length() - DaybreakHeader::size());
+						else
+							sp->Compress(*out, 1, out->Length() - 1);
+						break;
+					case EncodeXOR:
+						if (out->GetInt8(0) == 0)
+							sp->Encode(*out, DaybreakHeader::size(), out->Length() - DaybreakHeader::size());
+						else
+							sp->Encode(*out, 1, out->Length() - 1);
+						break;
+					default:
+						break;
+				}
 			}
-		}
-	
-		AppendCRC(out);
-	
+			
+			sp->AppendCRC(*out);
+			resolve(out);
+		})
+		.Then([sp, out, send_func](const EQEmu::Any &result) {
+			uv_udp_send_t *send_req = new uv_udp_send_t;
+			memset(send_req, 0, sizeof(*send_req));
+			sockaddr_in send_addr;
+			uv_ip4_addr(sp->RemoteEndpoint().c_str(), sp->RemotePort(), &send_addr);
+			uv_buf_t send_buffers[1];
+			
+			char *data = new char[out->Length()];
+			memcpy(data, out->Data(), out->Length());
+			send_buffers[0] = uv_buf_init(data, out->Length());
+			send_req->data = send_buffers[0].base;
+			
+			auto &stats = sp->GetStats();
+
+			stats.sent_bytes += out->Length();
+			stats.sent_packets++;
+
+			auto owner = sp->GetManager();
+
+			if (owner->m_options.simulated_out_packet_loss && owner->m_options.simulated_out_packet_loss >= owner->m_rand.Int(0, 100)) {
+				delete[](char*)send_req->data;
+				delete send_req;
+				return;
+			}
+			
+			uv_udp_send(send_req, &owner->m_socket, send_buffers, 1, (sockaddr*)&send_addr, send_func);
+		})
+		.Finally([out]() {
+			delete out;
+		})
+		.Run();
+	}
+	else {
 		uv_udp_send_t *send_req = new uv_udp_send_t;
-		memset(send_req, 0, sizeof(*send_req));
 		sockaddr_in send_addr;
 		uv_ip4_addr(m_endpoint.c_str(), m_port, &send_addr);
 		uv_buf_t send_buffers[1];
-	
-		char *data = new char[out.Length()];
-		memcpy(data, out.Data(), out.Length());
-		send_buffers[0] = uv_buf_init(data, out.Length());
+		
+		char *data = new char[p.Length()];
+		memcpy(data, p.Data(), p.Length());
+		send_buffers[0] = uv_buf_init(data, p.Length());
 		send_req->data = send_buffers[0].base;
-	
-		m_stats.sent_bytes += out.Length();
+		
+		m_stats.sent_bytes += p.Length();
 		m_stats.sent_packets++;
+		
 		if (m_owner->m_options.simulated_out_packet_loss && m_owner->m_options.simulated_out_packet_loss >= m_owner->m_rand.Int(0, 100)) {
 			delete[](char*)send_req->data;
 			delete send_req;
 			return;
 		}
-	
+		
 		uv_udp_send(send_req, &m_owner->m_socket, send_buffers, 1, (sockaddr*)&send_addr, send_func);
-		return;
 	}
-	
-	uv_udp_send_t *send_req = new uv_udp_send_t;
-	sockaddr_in send_addr;
-	uv_ip4_addr(m_endpoint.c_str(), m_port, &send_addr);
-	uv_buf_t send_buffers[1];
-	
-	char *data = new char[p.Length()];
-	memcpy(data, p.Data(), p.Length());
-	send_buffers[0] = uv_buf_init(data, p.Length());
-	send_req->data = send_buffers[0].base;
-	
-	m_stats.sent_bytes += p.Length();
-	m_stats.sent_packets++;
-	
-	if (m_owner->m_options.simulated_out_packet_loss && m_owner->m_options.simulated_out_packet_loss >= m_owner->m_rand.Int(0, 100)) {
-		delete[](char*)send_req->data;
-		delete send_req;
-		return;
-	}
-	
-	uv_udp_send(send_req, &m_owner->m_socket, send_buffers, 1, (sockaddr*)&send_addr, send_func);
 }
 
 void EQ::Net::DaybreakConnection::InternalQueuePacket(Packet &p, int stream_id, bool reliable)

common/net/daybreak_connection.h

@@ -95,7 +95,7 @@ namespace EQ
 
 		class DaybreakConnectionManager;
 		class DaybreakConnection;
-		class DaybreakConnection
+		class DaybreakConnection : public std::enable_shared_from_this<DaybreakConnection>
 		{
 		public:
 			DaybreakConnection(DaybreakConnectionManager *owner, const DaybreakConnect &connect, const std::string &endpoint, int port);
@@ -109,10 +109,16 @@ namespace EQ
 			void QueuePacket(Packet &p);
 			void QueuePacket(Packet &p, int stream);
 			void QueuePacket(Packet &p, int stream, bool reliable);
+
 			const DaybreakConnectionStats& GetStats() const { return m_stats; }
+			DaybreakConnectionStats &GetStats() { return m_stats; }
 			void ResetStats();
 			size_t GetRollingPing() const { return m_rolling_ping; }
-			DbProtocolStatus GetStatus() { return m_status; }
+			DbProtocolStatus GetStatus() const { return m_status; }
+
+			const DaybreakEncodeType* GetEncodePasses() const { return m_encode_passes; }
+			const DaybreakConnectionManager* GetManager() const { return m_owner; }
+			DaybreakConnectionManager* GetManager() { return m_owner; }
 		private:
 			DaybreakConnectionManager *m_owner;
 			std::string m_endpoint;
@@ -209,7 +215,6 @@ namespace EQ
 				resend_delay_factor = 1.25;
 				resend_delay_min = 150;
 				resend_delay_max = 5000;
-				resends_per_connection_cycle = 10;
 				connect_delay_ms = 500;
 				stale_connection_ms = 90000;
 				connect_stale_ms = 5000;
@@ -234,7 +239,6 @@ namespace EQ
 			size_t resend_delay_ms;
 			size_t resend_delay_min;
 			size_t resend_delay_max;
-			int resends_per_connection_cycle;
 			size_t connect_delay_ms;
 			size_t connect_stale_ms;
 			size_t stale_connection_ms;

ucs/clientlist.cpp

@@ -473,7 +473,6 @@ Clientlist::Clientlist(int ChatPort) {
 	chat_opts.daybreak_options.resend_delay_factor = RuleR(Network, ResendDelayFactor);
 	chat_opts.daybreak_options.resend_delay_min = RuleI(Network, ResendDelayMinMS);
 	chat_opts.daybreak_options.resend_delay_max = RuleI(Network, ResendDelayMaxMS);
-	chat_opts.daybreak_options.resends_per_connection_cycle = RuleI(Network, ResendsPerCycle);
 
 	chatsf = new EQ::Net::EQStreamManager(chat_opts);
 

world/net.cpp

@@ -499,7 +499,6 @@ int main(int argc, char** argv) {
 	opts.daybreak_options.resend_delay_factor = RuleR(Network, ResendDelayFactor);
 	opts.daybreak_options.resend_delay_min = RuleI(Network, ResendDelayMinMS);
 	opts.daybreak_options.resend_delay_max = RuleI(Network, ResendDelayMaxMS);
-	opts.daybreak_options.resends_per_connection_cycle = RuleI(Network, ResendsPerCycle);
 
 	EQ::Net::EQStreamManager eqsm(opts);
 

zone/net.cpp

@@ -464,7 +464,6 @@ int main(int argc, char** argv) {
 			opts.daybreak_options.resend_delay_factor = RuleR(Network, ResendDelayFactor);
 			opts.daybreak_options.resend_delay_min = RuleI(Network, ResendDelayMinMS);
 			opts.daybreak_options.resend_delay_max = RuleI(Network, ResendDelayMaxMS);
-			opts.daybreak_options.resends_per_connection_cycle = RuleI(Network, ResendsPerCycle);
 			eqsm.reset(new EQ::Net::EQStreamManager(opts));
 			eqsf_open = true;
 

zone/pathing.cpp

@@ -1,5 +1,5 @@
 #include "../common/global_define.h"
-#include "../common/event/background_task.h"
+#include "../common/event/task.h"
 
 #include "client.h"
 #include "zone.h"
@@ -40,53 +40,56 @@ void CullPoints(std::vector<FindPerson_Point> &points) {
 }
 
 void Client::SendPathPacket(const std::vector<FindPerson_Point> &points) {
-	EQ::BackgroundTask task([](EQEmu::Any &data) {
-		auto &points = EQEmu::any_cast<std::vector<FindPerson_Point>&>(data);
+	EQEmu::Any data(points);
+	EQ::Task([=](EQ::Task::ResolveFn resolve, EQ::Task::RejectFn reject) {
+		auto points = EQEmu::any_cast<std::vector<FindPerson_Point>>(data);
 		CullPoints(points);
-	}, [this](EQEmu::Any &data) {
-		auto &points = EQEmu::any_cast<std::vector<FindPerson_Point>&>(data);
-
+		resolve(points);
+	})
+	.Then([this](const EQEmu::Any &result) {
+		auto points = EQEmu::any_cast<std::vector<FindPerson_Point>>(result);
 		if (points.size() < 2) {
 			if (Admin() > 10) {
 				Message(MT_System, "Too few points");
 			}
-
+		
 			EQApplicationPacket outapp(OP_FindPersonReply, 0);
 			QueuePacket(&outapp);
 			return;
 		}
-
+		
 		if (points.size() > 36) {
 			if (Admin() > 10) {
 				Message(MT_System, "Too many points %u", points.size());
 			}
-
+		
 			EQApplicationPacket outapp(OP_FindPersonReply, 0);
 			QueuePacket(&outapp);
 			return;
 		}
-
+		
 		if (Admin() > 10) {
 			Message(MT_System, "Total points %u", points.size());
 		}
-
+		
 		int len = sizeof(FindPersonResult_Struct) + (points.size() + 1) * sizeof(FindPerson_Point);
 		auto outapp = new EQApplicationPacket(OP_FindPersonReply, len);
 		FindPersonResult_Struct* fpr = (FindPersonResult_Struct*)outapp->pBuffer;
-
+		
 		std::vector<FindPerson_Point>::iterator cur, end;
 		cur = points.begin();
 		end = points.end();
 		unsigned int r;
 		for (r = 0; cur != end; ++cur, r++) {
 			fpr->path[r] = *cur;
-
+		
 		}
 		//put the last element into the destination field
 		--cur;
 		fpr->path[r] = *cur;
 		fpr->dest = *cur;
-
+		
 		FastQueuePacket(&outapp);
-	}, points);
+	})
+	.Run();
 }