From 5ce4256e3d6ff2e1595750e3875865089e20a03b Mon Sep 17 00:00:00 2001
From: rfree2monero <rfreemonero@op.pl>
Date: Thu, 12 Feb 2015 20:59:39 +0100
Subject: 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
---
 .../cryptonote_protocol_handler-base.cpp           | 94 +---------------------
 1 file changed, 2 insertions(+), 92 deletions(-)

(limited to 'src/cryptonote_protocol/cryptonote_protocol_handler-base.cpp')

diff --git a/src/cryptonote_protocol/cryptonote_protocol_handler-base.cpp b/src/cryptonote_protocol/cryptonote_protocol_handler-base.cpp
index 6b25cb681..b5a5ceea9 100644
--- a/src/cryptonote_protocol/cryptonote_protocol_handler-base.cpp
+++ b/src/cryptonote_protocol/cryptonote_protocol_handler-base.cpp
@@ -104,11 +104,11 @@ namespace cryptonote {
 
 double cryptonote_protocol_handler_base::estimate_one_block_size() noexcept { // for estimating size of blocks to downloa
  const double size_min = 500; // XXX 500
- const int history_len = 20; // how many blocks to average over
+ //const int history_len = 20; // how many blocks to average over
 
  double avg=0;
  try {
- avg = get_avg_block_size(history_len);
+ avg = get_avg_block_size(/*history_len*/);
  } catch (...) { }
  avg = std::max( size_min , avg);
  return avg;
@@ -120,96 +120,6 @@ cryptonote_protocol_handler_base::cryptonote_protocol_handler_base() {
 cryptonote_protocol_handler_base::~cryptonote_protocol_handler_base() {
 }
 
-void cryptonote_protocol_handler_base::handler_request_blocks_now(size_t &count_limit) {
-	using namespace epee::net_utils;
-	size_t est_req_size=0; //  how much data are we now requesting (to be soon send to us)
-
-	const auto count_limit_default = count_limit;
-
-	bool allowed_now = false; // are we now allowed to request or are we limited still
-	// long int size_limit;
-
-	while (!allowed_now) {
-		/* if ( ::cryptonote::core::get_is_stopping() ) {  // TODO fast exit
-			_fact("ABORT sleep (before sending requeset) due to stopping"); 
-			break;
-		}*/
-
-			//LOG_PRINT_RED("[DBG]" << get_avg_block_size(1), LOG_LEVEL_0);
-		//{
-			long int size_limit1=0, size_limit2=0;
-			//LOG_PRINT_RED("calculating REQUEST size:", LOG_LEVEL_0);
-			{
-				CRITICAL_REGION_LOCAL(	network_throttle_manager::m_lock_get_global_throttle_in );
-				network_throttle_manager::get_global_throttle_in().tick();
-				size_limit1 = network_throttle_manager::get_global_throttle_in().get_recommended_size_of_planned_transport();
-			}
-			{
-				CRITICAL_REGION_LOCAL(	network_throttle_manager::m_lock_get_global_throttle_inreq );
-				network_throttle_manager::get_global_throttle_inreq().tick();
-				size_limit2 = network_throttle_manager::get_global_throttle_inreq().get_recommended_size_of_planned_transport();
-			}
-
-			long int one_block_estimated_size = estimate_one_block_size();
-			long int limit_small = std::min( size_limit1 , size_limit2 );
-			long int size_limit = limit_small/3 + size_limit1/3 + size_limit2/3;
-			if (limit_small <= 0) size_limit = 0;
-			const double estimated_peers = 1.2; // how many peers/threads we want to talk to, in order to not grab entire b/w by 1 thread
-			const double knob = 1.000;
-			size_limit /= (estimated_peers / estimated_peers) * knob;
-			_note_c("net/req-calc" , "calculating REQUEST size:" << size_limit1 << " " << size_limit2 << " small=" << limit_small << " final size_limit="<<size_limit);
-
-			double L = size_limit / one_block_estimated_size; // calculating item limit (some heuristics)
-			//LOG_PRINT_RED("L1 = " << L , LOG_LEVEL_0);
-			//double L2=0; if (L>1) L2=std::log(L);
-			//L = L/10. + L2*5;
-			//LOG_PRINT_RED("L2 = " << L , LOG_LEVEL_0);
-			L = std::min( (double)count_limit_default, (double)L);
-			//LOG_PRINT_RED("L3 = " << L , LOG_LEVEL_0);
-
-			const long int hard_limit = 500; // never get more blocks at once ; TODO depend on speed limit. Must be low or limiting is too bursty.
-
-			L = std::min(L, (double) hard_limit);
-
-			count_limit = (int)L;
-
-			est_req_size = count_limit * one_block_estimated_size ; // how much data did we just requested?
-			
-			//LOG_PRINT_RED("est_req_size = " << est_req_size , LOG_LEVEL_0);
-			//LOG_PRINT_RED("count_limit = " << count_limit , LOG_LEVEL_0);
-			//LOG_PRINT_RED("one_block_estimated_size = " << one_block_estimated_size , LOG_LEVEL_0);
-		//}
-
-		if (count_limit > 0) allowed_now = true;
-       // XXX if (!allowed_now) { // XXX DOWNLOAD
-			//long int ms = 3000; // XXX 2000
-			//LOG_PRINT_RED("size_limit = " << size_limit , LOG_LEVEL_0);
-			long int ms = network_throttle_manager::get_global_throttle_in().get_sleep_time_after_tick(one_block_estimated_size); // XXX too long
-			//long int ms = network_throttle_manager::get_global_throttle_in().get_sleep_time(count_limit); // XXX
-			//long int ms = network_throttle_manager::get_global_throttle_in().get_sleep_time(size_limit); // XXX best
-			
-			//ms /= 100; // XXX
-			_info_c("net/sleep", "Sleeping in " << __FUNCTION__ << " for " << ms << " ms"); // XXX debug sleep
-			//LOG_PRINT_RED("ms = " << ms , LOG_LEVEL_0);
-			boost::this_thread::sleep(boost::posix_time::milliseconds( ms ) ); // TODO randomize sleeps
-		//}
-	}
-	// done waiting&sleeping ^
-
-	// ok we are allowed to send now
-	{
-		CRITICAL_REGION_LOCAL(	network_throttle_manager::m_lock_get_global_throttle_inreq );
-		network_throttle_manager::get_global_throttle_inreq().handle_trafic_tcp( est_req_size ); // increase countere of the global requested input
-	}
-
-	// TODO remove debug
-	LOG_PRINT_YELLOW("*************************************************************************", LOG_LEVEL_0);
-	LOG_PRINT_RED("### RRRR ### sending request (type 1), CALCULATED limit = " << count_limit << " = estimated " << est_req_size << " b", LOG_LEVEL_0);
-	LOG_PRINT_YELLOW("*************************************************************************", LOG_LEVEL_0);
-	LOG_PRINT_RED("\n", LOG_LEVEL_0);
-	_note_c("net/req", "### RRRR ### sending request (type 1), CALCULATED limit = " << count_limit << " = estimated " << est_req_size << " b");
-}
-
 void cryptonote_protocol_handler_base::handler_request_blocks_history(std::list<crypto::hash>& ids) {
 	using namespace epee::net_utils;
 	LOG_PRINT_L0("### ~~~RRRR~~~~ ### sending request (type 2), limit = " << ids.size());
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