2014 network limit 1.0a +utils +toc -doc -drmonero

commands and options for network limiting
works very well e.g. for 50 KiB/sec up and down
ToS (QoS) flag
peer number limit
TODO some spikes in ingress/download
TODO problems when other up and down limit
added "otshell utils" - simple logging (with colors, text files channels)

src/p2p/connection_basic.hpp

@@ -0,0 +1,139 @@
+/// @file
+/// @author rfree (current maintainer in monero.cc project)
+/// @brief base for connection, contains e.g. the ratelimit hooks
+
+// ! This file might contain variable names same as in template class connection<> 
+// ! from files contrib/epee/include/net/abstract_tcp_server2.*
+// ! I am not a lawyer; afaik APIs, var names etc are not copyrightable ;)
+// ! (how ever if in some wonderful juristdictions that is not the case, then why not make another sub-class withat that members and licence it as epee part)
+// ! Working on above premise, IF this is valid in your juristdictions, then consider this code as released as:
+
+// Copyright (c) 2014, The Monero Project
+// 
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+// 
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+// 
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+// 
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// 
+
+/* rfree: place for hanlers for the non-template base, can be used by connection<> template class in abstract_tcp_server2 file  */
+
+#ifndef INCLUDED_p2p_connection_basic_hpp
+#define INCLUDED_p2p_connection_basic_hpp
+
+
+#include <boost/asio.hpp>
+#include <string>
+#include <vector>
+#include <boost/noncopyable.hpp>
+#include <boost/shared_ptr.hpp>
+#include <atomic>
+
+#include <boost/asio.hpp>
+#include <boost/array.hpp>
+#include <boost/noncopyable.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/enable_shared_from_this.hpp>
+#include <boost/interprocess/detail/atomic.hpp>
+#include <boost/thread/thread.hpp>
+
+#include <memory>
+
+#include "../../contrib/epee/include/net/net_utils_base.h"
+#include "../../contrib/epee/include/syncobj.h"
+
+namespace epee
+{
+namespace net_utils
+{
+
+  /************************************************************************/
+  /*                                                                      */
+  /************************************************************************/
+  /// Represents a single connection from a client.
+
+class connection_basic_pimpl; // PIMPL for this class
+
+class connection_basic { // not-templated base class for rapid developmet of some code parts
+	public:
+		std::unique_ptr< connection_basic_pimpl > mI; // my Implementation
+
+		// moved here from orginal connecton<> - common member variables that do not depend on template in connection<>
+    volatile uint32_t m_want_close_connection;
+    std::atomic<bool> m_was_shutdown;
+    critical_section m_send_que_lock;
+    std::list<std::string> m_send_que;
+    volatile bool m_is_multithreaded;
+    double m_start_time;
+    /// Strand to ensure the connection's handlers are not called concurrently.
+    boost::asio::io_service::strand strand_;
+    /// Socket for the connection.
+    boost::asio::ip::tcp::socket socket_;
+
+		std::atomic<long> &m_ref_sock_count; // reference to external counter of existing sockets that we will ++/--
+	public:
+		// first counter is the ++/-- count of current sockets, the other socket_number is only-increasing ++ number generator
+		connection_basic(boost::asio::io_service& io_service, std::atomic<long> &ref_sock_count, std::atomic<long> &sock_number);
+
+		virtual ~connection_basic();
+
+		// various handlers to be called from connection class:
+		void do_send_handler_start(const void * ptr , size_t cb);
+		void do_send_handler_delayed(const void * ptr , size_t cb);
+		void do_send_handler_write(const void * ptr , size_t cb);
+		void do_send_handler_stop(const void * ptr , size_t cb);
+		void do_send_handler_after_write( const boost::system::error_code& e, size_t cb ); // from handle_write
+		void do_send_handler_write_from_queue(const boost::system::error_code& e, size_t cb , int q_len); // from handle_write, sending next part
+		void do_read_handler_start(const boost::system::error_code& e, std::size_t bytes_transferred); // from read, after read completion
+
+		void logger_handle_net_write(size_t size); // network data written
+		void logger_handle_net_read(size_t size); // network data read
+		void logger_handle_net_peer(size_t size, bool io);
+
+		void set_start_time();
+
+		// config for rate limit
+		
+		static void set_rate_up_limit(uint64_t limit);
+		static void set_rate_down_limit(uint64_t limit);
+		static void set_rate_limit(uint64_t limit);
+		static void set_rate_autodetect(uint64_t limit);
+		static void set_kill_limit (uint64_t limit);
+
+		// config misc
+		static void set_tos_flag(int tos); // ToS / QoS flag
+		static int get_tos_flag();
+
+		// handlers and sleep
+		void sleep_before_packet(size_t packet_size, int phase, int q_len); // execute a sleep ; phase is not really used now(?)
+		static void save_limit_to_file(int limit); ///< for dr-monero
+		static double get_sleep_time(size_t cb);
+};
+
+} // nameserver
+} // nameserver
+
+#endif
+
+