Diagnostics for peer ban issues.

libethereum/DownloadMan.h

@@ -134,6 +134,15 @@ public:
 		return m_blocksGot.full();
 	}
 
+	h256s remaining() const
+	{
+		h256s ret;
+		ReadGuard l(m_lock);
+		for (auto i: m_blocksGot.inverted())
+			ret.push_back(m_chain[i]);
+		return ret;
+	}
+
 	h256s chain() const { ReadGuard l(m_lock); return m_chain; }
 	void foreachSub(std::function<void(DownloadSub const&)> const& _f) const { ReadGuard l(x_subs); for(auto i: m_subs) _f(*i); }
 	unsigned subCount() const { ReadGuard l(x_subs); return m_subs.size(); }

libethereum/EthereumHost.cpp

@@ -132,9 +132,9 @@ void EthereumHost::noteDoneBlocks(EthereumPeer* _who, bool _clemency)
 		else
 		{
 			// Done our chain-get.
-			clog(NetNote) << "Chain download failed. Peer with blocks didn't have them all. This peer is bad and should be punished.";
-			clog(NetNote) << "TODO: PUNISH.";
-
+			clog(NetWarn) << "Chain download failed. Peer with blocks didn't have them all. This peer is bad and should be punished.";
+			clog(NetWarn) << m_man.remaining();
+			clog(NetWarn) << "WOULD BAN.";
 //			m_banned.insert(_who->session()->id());			// We know who you are!
 //			_who->disable("Peer sent hashes but was unable to provide the blocks.");
 		}