2014 network limit 1.1 +utils +toc -doc -drmonero

Update of the PR with network limits

works very well for all speeds
(but remember that low download speed can stop upload
because we then slow down downloading of blockchain
requests too)

more debug options

fixed pedantic warnings in our code
should work again on Mac OS X and FreeBSD
fixed warning about size_t
tested on Debian, Ubuntu, Windows(testing now)

TCP options and ToS (QoS) flag
FIXED peer number limit
FIXED some spikes in ingress/download
FIXED problems when other up and down limit

4 files changed, 99 insertions, 14 deletions

diff --git a/contrib/epee/include/net/abstract_tcp_server2.h b/contrib/epee/include/net/abstract_tcp_server2.h
index 1e6223212..3e6ea2171 100644
--- a/contrib/epee/include/net/abstract_tcp_server2.h
+++ b/contrib/epee/include/net/abstract_tcp_server2.h
@@ -56,6 +56,7 @@
 #include "syncobj.h"
 #include "../../../../src/p2p/connection_basic.hpp"
 #include "../../../../contrib/otshell_utils/utils.hpp"
+#include "../../../../src/p2p/network_throttle-detail.hpp"
 
 #define ABSTRACT_SERVER_SEND_QUE_MAX_COUNT 1000
 
@@ -130,6 +131,7 @@ namespace net_utils
 
     /// Buffer for incoming data.
     boost::array<char, 8192> buffer_;
+    //boost::array<char, 1024> buffer_;
 
     t_connection_context context;
     i_connection_filter* &m_pfilter;
@@ -143,6 +145,12 @@ namespace net_utils
     critical_section m_chunking_lock; // held while we add small chunks of the big do_send() to small do_send_chunk()
     
     t_server_role m_connection_type;
+    
+    // for calculate speed (last 60 sec)
+    network_throttle m_throttle_speed_in;
+    network_throttle m_throttle_speed_out;
+    std::mutex m_throttle_speed_in_mutex;
+    std::mutex m_throttle_speed_out_mutex;
 
 	public:
 			void setRPcStation();
@@ -285,6 +293,7 @@ namespace net_utils
     critical_section m_threads_lock;
     volatile uint32_t m_thread_index; // TODO change to std::atomic
     t_server_role type;
+    void detach_threads();
 
     /// The next connection to be accepted
     connection_ptr new_connection_;
diff --git a/contrib/epee/include/net/abstract_tcp_server2.inl b/contrib/epee/include/net/abstract_tcp_server2.inl
index 8dff192b1..5855f7f86 100644
--- a/contrib/epee/include/net/abstract_tcp_server2.inl
+++ b/contrib/epee/include/net/abstract_tcp_server2.inl
@@ -52,6 +52,7 @@
 #include "../../../../src/cryptonote_core/cryptonote_core.h" // e.g. for the send_stop_signal()
 
 #include "../../../../contrib/otshell_utils/utils.hpp"
+#include "../../../../src/p2p/data_logger.hpp"
 using namespace nOT::nUtils; // TODO
 
 PRAGMA_WARNING_PUSH
@@ -75,7 +76,9 @@ PRAGMA_WARNING_DISABLE_VS(4355)
 		connection_basic(io_service, ref_sock_count, sock_number), 
 		m_protocol_handler(this, config, context),
 		m_pfilter( pfilter ),
-		m_connection_type(NET)
+		m_connection_type(NET),
+		m_throttle_speed_in("speed_in", "throttle_speed_in"),
+		m_throttle_speed_out("speed_out", "throttle_speed_out")
   {
     _info_c("net/sleepRPC", "connection constructor set m_connection_type="<<m_connection_type);
   }
@@ -162,6 +165,9 @@ PRAGMA_WARNING_DISABLE_VS(4355)
     socket_.set_option( optionTos );
 	//_dbg1("Set ToS flag to " << tos);
 	
+	boost::asio::ip::tcp::no_delay noDelayOption(false);
+	socket_.set_option(noDelayOption);
+	
     return true;
 
     CATCH_ENTRY_L0("connection<t_protocol_handler>::start()", false);
@@ -240,6 +246,32 @@ PRAGMA_WARNING_DISABLE_VS(4355)
     
     if (!e)
     {
+		{
+			CRITICAL_REGION_LOCAL(m_throttle_speed_in_mutex);
+			m_throttle_speed_in.handle_trafic_exact(bytes_transferred);
+			context.m_current_speed_down = m_throttle_speed_in.get_current_speed();
+		}
+    
+    	{
+			CRITICAL_REGION_LOCAL(	epee::net_utils::network_throttle_manager::network_throttle_manager::m_lock_get_global_throttle_in );
+			epee::net_utils::network_throttle_manager::network_throttle_manager::get_global_throttle_in().handle_trafic_exact(bytes_transferred * 1024);
+		}
+		double delay=0; // will be calculated
+		do
+		{
+			{ //_scope_dbg1("CRITICAL_REGION_LOCAL");
+				CRITICAL_REGION_LOCAL(	epee::net_utils::network_throttle_manager::m_lock_get_global_throttle_in );
+				delay = epee::net_utils::network_throttle_manager::get_global_throttle_in().get_sleep_time_after_tick( bytes_transferred ); // decission from global
+			}
+			
+			delay *= 0.5;
+			if (delay > 0) {
+				long int ms = (long int)(delay * 100);
+				epee::net_utils::data_logger::get_instance().add_data("sleep_down", ms);
+				std::this_thread::sleep_for(std::chrono::milliseconds(ms));
+			}
+		} while(delay > 0);
+		
       //_info("[sock " << socket_.native_handle() << "] RECV " << bytes_transferred);
       logger_handle_net_read(bytes_transferred);
       context.m_last_recv = time(NULL);
@@ -398,6 +430,11 @@ PRAGMA_WARNING_DISABLE_VS(4355)
       return false;
     if(m_was_shutdown)
       return false;
+    {
+		CRITICAL_REGION_LOCAL(m_throttle_speed_out_mutex);
+		m_throttle_speed_out.handle_trafic_exact(cb);
+		context.m_current_speed_up = m_throttle_speed_out.get_current_speed();
+	}
 
     //_info("[sock " << socket_.native_handle() << "] SEND " << cb);
     context.m_last_send = time(NULL);
@@ -405,8 +442,7 @@ PRAGMA_WARNING_DISABLE_VS(4355)
     //some data should be wrote to stream
     //request complete
     
-    do_send_handler_start( ptr , cb ); // (((H)))
-
+	sleep_before_packet(cb, 1, 1);
     epee::critical_region_t<decltype(m_send_que_lock)> send_guard(m_send_que_lock); // *** critical ***
     long int retry=0;
     const long int retry_limit = 5*4;
@@ -440,8 +476,9 @@ PRAGMA_WARNING_DISABLE_VS(4355)
     { // active operation should be in progress, nothing to do, just wait last operation callback
         auto size_now = cb;
         _info_c("net/out/size", "do_send() NOW just queues: packet="<<size_now<<" B, is added to queue-size="<<m_send_que.size());
-        do_send_handler_delayed( ptr , size_now ); // (((H)))
-
+        //do_send_handler_delayed( ptr , size_now ); // (((H))) // empty function
+      
+      LOG_PRINT_L4("[sock " << socket_.native_handle() << "] Async send requested " << m_send_que.front().size());
     }
     else
     { // no active operation
@@ -463,11 +500,11 @@ PRAGMA_WARNING_DISABLE_VS(4355)
                                  //)
                                  );
         //_dbg3("(chunk): " << size_now);
-        logger_handle_net_write(size_now);
+        //logger_handle_net_write(size_now);
         //_info("[sock " << socket_.native_handle() << "] Async send requested " << m_send_que.front().size());
     }
     
-    do_send_handler_stop( ptr , cb );
+    //do_send_handler_stop( ptr , cb ); // empty function
 
     return true;
 
@@ -516,7 +553,8 @@ PRAGMA_WARNING_DISABLE_VS(4355)
       shutdown();
       return;
     }
-
+    logger_handle_net_write(cb);
+	sleep_before_packet(cb, 1, 1);
     bool do_shutdown = false;
     CRITICAL_REGION_BEGIN(m_send_que_lock);
     if(m_send_que.empty())
@@ -545,7 +583,6 @@ PRAGMA_WARNING_DISABLE_VS(4355)
 				// )
         );
       //_dbg3("(normal)" << size_now);
-      logger_handle_net_write(size_now);
     }
     CRITICAL_REGION_END();
 
@@ -784,6 +821,10 @@ POP_WARNINGS
   template<class t_protocol_handler>
   void boosted_tcp_server<t_protocol_handler>::send_stop_signal()
   {
+    if (::cryptonote::core::get_fast_exit() == true)
+    {
+		detach_threads();
+	}
     m_stop_signal_sent = true;
     TRY_ENTRY();
     io_service_.stop();
@@ -988,6 +1029,15 @@ POP_WARNINGS
     return true;
     CATCH_ENTRY_L0("boosted_tcp_server<t_protocol_handler>::connect_async", false);
   }
+  //---------------------------------------------------------------------------------
+  template<class t_protocol_handler>
+  void  boosted_tcp_server<t_protocol_handler>::detach_threads()
+  {
+	for (auto thread : m_threads)
+		thread->detach();
+  }
+  
+  
 } // namespace
 } // namespace
 PRAGMA_WARNING_POP
diff --git a/contrib/epee/include/net/levin_protocol_handler_async.h b/contrib/epee/include/net/levin_protocol_handler_async.h
index 5e5e803f5..92f75161a 100644
--- a/contrib/epee/include/net/levin_protocol_handler_async.h
+++ b/contrib/epee/include/net/levin_protocol_handler_async.h
@@ -81,7 +81,7 @@ public:
 
   async_protocol_handler_config():m_pcommands_handler(NULL), m_max_packet_size(LEVIN_DEFAULT_MAX_PACKET_SIZE)
   {}
-  void del_connections(size_t count);
+  void del_out_connections(size_t count);
 };
 
 
@@ -670,10 +670,30 @@ void async_protocol_handler_config<t_connection_context>::del_connection(async_p
 }
 //------------------------------------------------------------------------------------------
 template<class t_connection_context>
-void async_protocol_handler_config<t_connection_context>::del_connections(size_t count) // TODO
+void async_protocol_handler_config<t_connection_context>::del_out_connections(size_t count)
 {
+	std::vector <boost::uuids::uuid> out_connections;
 	CRITICAL_REGION_BEGIN(m_connects_lock);
-	m_connects.clear();		
+	for (auto& c: m_connects)
+	{
+		if (!c.second->m_connection_context.m_is_income)
+			out_connections.push_back(c.first);
+	}
+	
+	if (out_connections.size() == 0)
+		return;
+
+	// close random out connections
+	unsigned seed = std::chrono::system_clock::now().time_since_epoch().count();
+	shuffle(out_connections.begin(), out_connections.end(), std::default_random_engine(seed));
+	while (count > 0 && out_connections.size() > 0)
+	{
+		close(*out_connections.begin());
+		del_connection(m_connects.at(*out_connections.begin()));
+		out_connections.erase(out_connections.begin());
+		--count;
+	}
+	
 	CRITICAL_REGION_END();
 }
 //------------------------------------------------------------------------------------------
diff --git a/contrib/epee/include/net/net_utils_base.h b/contrib/epee/include/net/net_utils_base.h
index 90e352787..f963e7746 100644
--- a/contrib/epee/include/net/net_utils_base.h
+++ b/contrib/epee/include/net/net_utils_base.h
@@ -55,6 +55,8 @@ namespace net_utils
     time_t   m_last_send;
     uint64_t m_recv_cnt;
     uint64_t m_send_cnt;
+    double m_current_speed_down;
+    double m_current_speed_up;
 
     connection_context_base(boost::uuids::uuid connection_id,
                             long remote_ip, int remote_port, bool is_income,
@@ -68,7 +70,9 @@ namespace net_utils
                                             m_last_recv(last_recv),
                                             m_last_send(last_send),
                                             m_recv_cnt(recv_cnt),
-                                            m_send_cnt(send_cnt)
+                                            m_send_cnt(send_cnt),
+                                            m_current_speed_down(0),
+                                            m_current_speed_up(0)
     {}
 
     connection_context_base(): m_connection_id(),
@@ -79,7 +83,9 @@ namespace net_utils
                                m_last_recv(0),
                                m_last_send(0),
                                m_recv_cnt(0),
-                               m_send_cnt(0)
+                               m_send_cnt(0),
+                               m_current_speed_down(0),
+                               m_current_speed_up(0)
     {}
 
     connection_context_base& operator=(const connection_context_base& a)