[fix] Network 1.8: unlimited the RPC connections

works for unit tests build, too

contrib/epee/include/net/abstract_tcp_server2.h

@@ -72,11 +72,6 @@ namespace net_utils
     virtual ~i_connection_filter(){}
   };
   
-  enum t_server_role { // type of the server, e.g. so that we will know how to limit it
-	  NET = 0, // default (not used? used for misc connections maybe?) TODO
-	  RPC = 1, // the rpc commands 
-	  P2P = 2  // to other p2p node
-  };
 
   /************************************************************************/
   /*                                                                      */
@@ -97,7 +92,8 @@ namespace net_utils
 			typename t_protocol_handler::config_type& config, 
 			std::atomic<long> &ref_sock_count,  // the ++/-- counter 
 			std::atomic<long> &sock_number, // the only increasing ++ number generator
-			i_connection_filter * &pfilter);
+			i_connection_filter * &pfilter
+			,t_connection_type connection_type);
 
     virtual ~connection();
     /// Get the socket associated with the connection.
@@ -109,6 +105,12 @@ namespace net_utils
     void get_context(t_connection_context& context_){context_ = context;}
 
     void call_back_starter();
+    
+    void save_dbg_log();
+
+
+		bool speed_limit_is_enabled() const; ///< tells us should we be sleeping here (e.g. do not sleep on RPC connections)
+    
   private:
     //----------------- i_service_endpoint ---------------------
     virtual bool do_send(const void* ptr, size_t cb); ///< (see do_send from i_service_endpoint)
@@ -144,7 +146,7 @@ namespace net_utils
     critical_section m_self_refs_lock;
     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;
+    t_connection_type m_connection_type;
     
     // for calculate speed (last 60 sec)
     network_throttle m_throttle_speed_in;
@@ -153,7 +155,7 @@ namespace net_utils
     std::mutex m_throttle_speed_out_mutex;
 
 	public:
-			void setRPcStation();
+			void setRpcStation();
   };
 
 
@@ -169,12 +171,14 @@ namespace net_utils
     typedef typename t_protocol_handler::connection_context t_connection_context;
     /// Construct the server to listen on the specified TCP address and port, and
     /// serve up files from the given directory.
-    boosted_tcp_server();
+
-    explicit boosted_tcp_server(boost::asio::io_service& external_io_service, t_server_role s_type);
+    boosted_tcp_server(t_connection_type connection_type = e_connection_type_NET);
+    explicit boosted_tcp_server(boost::asio::io_service& external_io_service, t_connection_type connection_type = e_connection_type_NET);
     ~boosted_tcp_server();
     
-    std::map<std::string, t_server_role> server_type_map;
+    std::map<std::string, t_connection_type> server_type_map;
     void create_server_type_map();
+
     bool init_server(uint32_t port, const std::string address = "0.0.0.0");
     bool init_server(const std::string port,  const std::string& address = "0.0.0.0");
 
@@ -292,12 +296,16 @@ namespace net_utils
     boost::thread::id m_main_thread_id;
     critical_section m_threads_lock;
     volatile uint32_t m_thread_index; // TODO change to std::atomic
-    t_server_role type;
     void detach_threads();
 
+    t_connection_type m_connection_type;
+
     /// The next connection to be accepted
     connection_ptr new_connection_;
+
   }; // class <>boosted_tcp_server
+
+
 } // namespace
 } // namespace
 

contrib/epee/include/net/abstract_tcp_server2.inl

@@ -71,16 +71,17 @@ PRAGMA_WARNING_DISABLE_VS(4355)
 		std::atomic<long> &ref_sock_count,  // the ++/-- counter 
 		std::atomic<long> &sock_number, // the only increasing ++ number generator
 		i_connection_filter* &pfilter
+		,t_connection_type connection_type
 	)
 	: 
 		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( connection_type ),
 		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);
+    _info_c("net/sleepRPC", "test, connection constructor set m_connection_type="<<m_connection_type);
   }
 PRAGMA_WARNING_DISABLE_VS(4355)
   //---------------------------------------------------------------------------------
@@ -239,6 +240,16 @@ PRAGMA_WARNING_DISABLE_VS(4355)
   }
   //---------------------------------------------------------------------------------
   template<class t_protocol_handler>
+  void connection<t_protocol_handler>::save_dbg_log()
+  {
+    _mark_c("net/kind" ,
+			 " connection type " << to_string( m_connection_type ) << " "
+	    << socket_.local_endpoint().address().to_string() << ":" << socket_.local_endpoint().port()
+			<<	" <--> " << socket_.remote_endpoint().address().to_string() << ":" << socket_.remote_endpoint().port()
+		);
+  }
+  //---------------------------------------------------------------------------------
+  template<class t_protocol_handler>
   void connection<t_protocol_handler>::handle_read(const boost::system::error_code& e,
     std::size_t bytes_transferred)
   {
@@ -257,12 +268,16 @@ PRAGMA_WARNING_DISABLE_VS(4355)
 			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
+		double delay=0; // will be calculated - how much we should sleep to obey speed limit etc
+
+
+		if (speed_limit_is_enabled()) {
+			do // keep sleeping if we should sleep
 			{
 				{ //_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 = epee::net_utils::network_throttle_manager::get_global_throttle_in().get_sleep_time_after_tick( bytes_transferred ); // decission from global throttle
 				}
 				
 				delay *= 0.5;
@@ -272,6 +287,7 @@ PRAGMA_WARNING_DISABLE_VS(4355)
 					std::this_thread::sleep_for(std::chrono::milliseconds(ms));
 				}
 			} while(delay > 0);
+		} // any form of sleeping
 		
       //_info("[sock " << socket_.native_handle() << "] RECV " << bytes_transferred);
       logger_handle_net_read(bytes_transferred);
@@ -356,7 +372,7 @@ PRAGMA_WARNING_DISABLE_VS(4355)
 		typedef long long signed int t_safe; // my t_size to avoid any overunderflow in arithmetic
 		const t_safe chunksize_good = (t_safe)( 1024 * std::max(1.0,factor) );
         const t_safe chunksize_max = chunksize_good * 2 ;
-		const bool allow_split = (m_connection_type == RPC) ? false : true; // TODO config
+		const bool allow_split = (m_connection_type == e_connection_type_RPC) ? false : true; // do not split RPC data
 
         ASRT(! (chunksize_max<0) ); // make sure it is unsigned before removin sign with cast:
         long long unsigned int chunksize_max_unsigned = static_cast<long long unsigned int>( chunksize_max ) ;
@@ -447,7 +463,10 @@ PRAGMA_WARNING_DISABLE_VS(4355)
     //some data should be wrote to stream
     //request complete
     
+		if (speed_limit_is_enabled()) {
 			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;
@@ -496,6 +515,7 @@ PRAGMA_WARNING_DISABLE_VS(4355)
 
         auto size_now = m_send_que.front().size();
         _dbg1_c("net/out/size", "do_send() NOW SENSD: packet="<<size_now<<" B");
+        if (speed_limit_is_enabled())
 			do_send_handler_write( ptr , size_now ); // (((H)))
 
         ASRT( size_now == m_send_que.front().size() );
@@ -545,6 +565,7 @@ PRAGMA_WARNING_DISABLE_VS(4355)
     return true;
     CATCH_ENTRY_L0("connection<t_protocol_handler>::close", false);
   }
+
   //---------------------------------------------------------------------------------
   template<class t_protocol_handler>
   void connection<t_protocol_handler>::handle_write(const boost::system::error_code& e, size_t cb)
@@ -559,7 +580,11 @@ PRAGMA_WARNING_DISABLE_VS(4355)
       return;
     }
     logger_handle_net_write(cb);
+
+		if (speed_limit_is_enabled()) {
 			sleep_before_packet(cb, 1, 1);
+		}
+
     bool do_shutdown = false;
     CRITICAL_REGION_BEGIN(m_send_que_lock);
     if(m_send_que.empty())
@@ -580,6 +605,7 @@ PRAGMA_WARNING_DISABLE_VS(4355)
       //have more data to send
 		auto size_now = m_send_que.front().size();
 		_dbg1_c("net/out/size", "handle_write() NOW SENDS: packet="<<size_now<<" B" <<", from  queue size="<<m_send_que.size());
+		if (speed_limit_is_enabled())
 			do_send_handler_write_from_queue(e, m_send_que.front().size() , m_send_que.size()); // (((H)))
 		ASRT( size_now == m_send_que.front().size() );
 		boost::asio::async_write(socket_, boost::asio::buffer(m_send_que.front().data(), size_now) , 
@@ -597,40 +623,50 @@ PRAGMA_WARNING_DISABLE_VS(4355)
     }
     CATCH_ENTRY_L0("connection<t_protocol_handler>::handle_write", void());
   }
+
   //---------------------------------------------------------------------------------
   template<class t_protocol_handler>
-  void connection<t_protocol_handler>::setRPcStation()
+  void connection<t_protocol_handler>::setRpcStation()
   {
-	m_connection_type = RPC; 
+    m_connection_type = e_connection_type_RPC; 
     _fact_c("net/sleepRPC", "set m_connection_type = RPC ");
+    _info_c("net/kind", "set m_connection_type = RPC ");
   }
+
+
+  template<class t_protocol_handler>
+  bool connection<t_protocol_handler>::speed_limit_is_enabled() const {
+		return m_connection_type != e_connection_type_RPC ;
+	}
+
   /************************************************************************/
   /*                                                                      */
   /************************************************************************/
+
   template<class t_protocol_handler>
-  boosted_tcp_server<t_protocol_handler>::boosted_tcp_server():
+  boosted_tcp_server<t_protocol_handler>::boosted_tcp_server( t_connection_type connection_type ) :
     m_io_service_local_instance(new boost::asio::io_service()),
     io_service_(*m_io_service_local_instance.get()),
     acceptor_(io_service_),
     m_stop_signal_sent(false), m_port(0), 
 	m_sock_count(0), m_sock_number(0), m_threads_count(0), 
 	m_pfilter(NULL), m_thread_index(0),
-    new_connection_(new connection<t_protocol_handler>(io_service_, m_config, m_sock_count, m_sock_number, m_pfilter))
+		m_connection_type( connection_type ),
+    new_connection_(new connection<t_protocol_handler>(io_service_, m_config, m_sock_count, m_sock_number, m_pfilter, m_connection_type))
   {
     create_server_type_map();
     m_thread_name_prefix = "NET";
-    type = NET;
   }
 
   template<class t_protocol_handler>
-  boosted_tcp_server<t_protocol_handler>::boosted_tcp_server(boost::asio::io_service& extarnal_io_service, t_server_role s_type):
+  boosted_tcp_server<t_protocol_handler>::boosted_tcp_server(boost::asio::io_service& extarnal_io_service, t_connection_type connection_type) :
     io_service_(extarnal_io_service),
     acceptor_(io_service_),
     m_stop_signal_sent(false), m_port(0), 
 		m_sock_count(0), m_sock_number(0), m_threads_count(0), 
 		m_pfilter(NULL), m_thread_index(0),
-		type(NET),
+		m_connection_type(connection_type),
-    new_connection_(new connection<t_protocol_handler>(io_service_, m_config, m_sock_count, m_sock_number, m_pfilter))
+    new_connection_(new connection<t_protocol_handler>(io_service_, m_config, m_sock_count, m_sock_number, m_pfilter, connection_type))
   {
     create_server_type_map();
     m_thread_name_prefix = "NET";
@@ -646,9 +682,9 @@ PRAGMA_WARNING_DISABLE_VS(4355)
   template<class t_protocol_handler>
   void boosted_tcp_server<t_protocol_handler>::create_server_type_map() 
   {
-		server_type_map["NET"] = t_server_role::NET;
+		server_type_map["NET"] = e_connection_type_NET;
-		server_type_map["RPC"] = t_server_role::RPC;
+		server_type_map["RPC"] = e_connection_type_RPC;
-		server_type_map["P2P"] = t_server_role::P2P;
+		server_type_map["P2P"] = e_connection_type_P2P;
   }
   //---------------------------------------------------------------------------------
   template<class t_protocol_handler>
@@ -668,6 +704,7 @@ PRAGMA_WARNING_DISABLE_VS(4355)
     acceptor_.listen();
     boost::asio::ip::tcp::endpoint binded_endpoint = acceptor_.local_endpoint();
     m_port = binded_endpoint.port();
+    _fact_c("net/RPClog", "start accept");
     acceptor_.async_accept(new_connection_->socket(),
       boost::bind(&boosted_tcp_server<t_protocol_handler>::handle_accept, this,
       boost::asio::placeholders::error));
@@ -724,9 +761,11 @@ POP_WARNINGS
   void boosted_tcp_server<t_protocol_handler>::set_threads_prefix(const std::string& prefix_name)
   {
     m_thread_name_prefix = prefix_name;
-    type = server_type_map[m_thread_name_prefix];
+		auto it = server_type_map.find(m_thread_name_prefix);
-    _note("Set server type to: " << type);
+		if (it==server_type_map.end()) throw std::runtime_error("Unknown prefix/server type:" + std::string(prefix_name));
-    _note("Set server type to: " << m_thread_name_prefix);
+    auto connection_type = it->second; // the value of type
+    _info_c("net/RPClog", "Set server type to: " << connection_type << " from name: " << m_thread_name_prefix);
+    _info_c("net/RPClog", "prefix_name = " << prefix_name);
   }
   //---------------------------------------------------------------------------------
   template<class t_protocol_handler>
@@ -845,15 +884,17 @@ POP_WARNINGS
   template<class t_protocol_handler>
   void boosted_tcp_server<t_protocol_handler>::handle_accept(const boost::system::error_code& e)
   {
+	_fact_c("net/RPClog", "handle_accept");
     TRY_ENTRY();
     if (!e)
     {
-		if (type == RPC) {
+		if (m_connection_type == e_connection_type_RPC) {
-			new_connection_->setRPcStation();
+			_note_c("net/rpc", "New server for RPC connections");
-			_note("New server for RPC connections");
+			_fact_c("net/RPClog", "New server for RPC connections");
+			new_connection_->setRpcStation(); // hopefully this is not needed actually
 		}
 		connection_ptr conn(std::move(new_connection_));
-      new_connection_.reset(new connection<t_protocol_handler>(io_service_, m_config, m_sock_count, m_sock_number, m_pfilter));
+      new_connection_.reset(new connection<t_protocol_handler>(io_service_, m_config, m_sock_count, m_sock_number, m_pfilter, m_connection_type));
       acceptor_.async_accept(new_connection_->socket(),
         boost::bind(&boosted_tcp_server<t_protocol_handler>::handle_accept, this,
         boost::asio::placeholders::error));
@@ -861,6 +902,7 @@ POP_WARNINGS
       bool r = conn->start(true, 1 < m_threads_count);
       if (!r)
         _erro("[sock " << conn->socket().native_handle() << "] Failed to start connection, connections_count = " << m_sock_count);
+      conn->save_dbg_log();
     }else
     {
       _erro("Some problems at accept: " << e.message() << ", connections_count = " << m_sock_count);
@@ -873,7 +915,7 @@ POP_WARNINGS
   {
     TRY_ENTRY();
 
-    connection_ptr new_connection_l(new connection<t_protocol_handler>(io_service_, m_config, m_sock_count, m_sock_number, m_pfilter) );
+    connection_ptr new_connection_l(new connection<t_protocol_handler>(io_service_, m_config, m_sock_count, m_sock_number, m_pfilter, m_connection_type) );
     boost::asio::ip::tcp::socket&  sock_ = new_connection_l->socket();
     
     //////////////////////////////////////////////////////////////////////////
@@ -954,6 +996,8 @@ POP_WARNINGS
       _erro("[sock " << new_connection_->socket().native_handle() << "] Failed to start connection, connections_count = " << m_sock_count);
     }
     
+	new_connection_l->save_dbg_log();
+
     return r;
 
     CATCH_ENTRY_L0("boosted_tcp_server<t_protocol_handler>::connect", false);
@@ -963,7 +1007,7 @@ POP_WARNINGS
   bool boosted_tcp_server<t_protocol_handler>::connect_async(const std::string& adr, const std::string& port, uint32_t conn_timeout, t_callback cb, const std::string& bind_ip)
   {
     TRY_ENTRY();    
-    connection_ptr new_connection_l(new connection<t_protocol_handler>(io_service_, m_config, m_sock_count, m_sock_number, m_pfilter) );
+    connection_ptr new_connection_l(new connection<t_protocol_handler>(io_service_, m_config, m_sock_count, m_sock_number, m_pfilter, m_connection_type) );
     boost::asio::ip::tcp::socket&  sock_ = new_connection_l->socket();
     
     //////////////////////////////////////////////////////////////////////////

contrib/epee/include/net/http_server_impl_base.h

@@ -45,7 +45,7 @@ namespace epee
 
   public:
     http_server_impl_base()
-        : m_net_server()
+        : m_net_server(epee::net_utils::e_connection_type_RPC)
     {}
 
     explicit http_server_impl_base(boost::asio::io_service& external_io_service)
@@ -75,6 +75,7 @@ namespace epee
     {
       //go to loop
       LOG_PRINT("Run net_service loop( " << threads_count << " threads)...", LOG_LEVEL_0);
+      _fact_c("net/RPClog", "Run net_service loop( " << threads_count << " threads)...");
       if(!m_net_server.run_server(threads_count, wait))
       {
         LOG_ERROR("Failed to run net tcp server!");

src/p2p/connection_basic.cpp

@@ -94,6 +94,18 @@ namespace epee
 namespace net_utils
 {
 
+  std::string to_string(t_connection_type type)
+  {
+	  if (type == e_connection_type_NET)
+		return std::string("NET");
+	  else if (type == e_connection_type_RPC)
+	    return std::string("RPC");
+	  else if (type == e_connection_type_P2P)
+	    return std::string("P2P");
+	  
+	  return std::string("UNKNOWN");
+  }
+
 
 /* ============================================================================ */
 

src/p2p/connection_basic.hpp

@@ -75,6 +75,14 @@ namespace net_utils
 
 class connection_basic_pimpl; // PIMPL for this class
 
+  enum t_connection_type { // type of the connection (of this server), e.g. so that we will know how to limit it
+	  e_connection_type_NET = 0, // default (not used?)
+	  e_connection_type_RPC = 1, // the rpc commands  (probably not rate limited, not chunked, etc)
+	  e_connection_type_P2P = 2  // to other p2p node (probably limited)
+  };
+  
+  std::string to_string(t_connection_type type);
+
 class connection_basic { // not-templated base class for rapid developmet of some code parts
 	public:
 		std::unique_ptr< connection_basic_pimpl > mI; // my Implementation

src/p2p/net_node.h

@@ -84,7 +84,8 @@ namespace nodetool
 		:m_payload_handler(payload_handler),
 		m_allow_local_ip(false),
 		m_no_igd(false),
-		m_hide_my_port(false)
+		m_hide_my_port(false),
+		m_net_server( epee::net_utils::e_connection_type_P2P ) // this is a P2P connection of the main p2p node server, because this is class node_server<>
     {
 		m_current_number_of_out_peers = 0;
 		m_save_graph = false;