From b0e6d01ef32388a92976cad09962471dd1f68248 Mon Sep 17 00:00:00 2001
From: Jeff Becker <jeff@i2p.rocks>
Date: Sun, 2 Dec 2018 20:52:40 -0500
Subject: [PATCH] limit link sessions to max of 16

---
 llarp/link/server.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/llarp/link/server.cpp b/llarp/link/server.cpp
index 72e567da1..1834dc1b7 100644
--- a/llarp/link/server.cpp
+++ b/llarp/link/server.cpp
@@ -86,6 +86,7 @@ namespace llarp
   void
   ILinkLayer::MapAddr(const PubKey& pk, ILinkSession* s)
   {
+    static constexpr size_t MaxSessionsPerKey = 16;
     Lock l_authed(m_AuthedLinksMutex);
     Lock l_pending(m_PendingMutex);
     auto itr = m_Pending.begin();
@@ -93,7 +94,10 @@ namespace llarp
     {
       if(itr->get() == s)
       {
-        m_AuthedLinks.insert(std::make_pair(pk, std::move(*itr)));
+        if(m_AuthedLinks.count(pk) < MaxSessionsPerKey)
+          m_AuthedLinks.insert(std::make_pair(pk, std::move(*itr)));
+        else
+          s->Close();
         itr = m_Pending.erase(itr);
         return;
       }