From bebce7f34dfe323f91aace1813374be6d22da505 Mon Sep 17 00:00:00 2001
From: Vasco Santos <vasco.santos@ua.pt>
Date: Wed, 27 Feb 2019 17:07:51 +0000
Subject: [PATCH] feat: limit connections number (#1872)

---
 package.json                       | 2 +-
 src/core/components/libp2p.js      | 5 ++++-
 src/core/runtime/config-browser.js | 8 +++++++-
 src/core/runtime/config-nodejs.js  | 8 +++++++-
 4 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/package.json b/package.json
index 58a9b27f8b..701ae7741e 100644
--- a/package.json
+++ b/package.json
@@ -129,7 +129,7 @@
     "libp2p": "~0.25.0-rc.3",
     "libp2p-bootstrap": "~0.9.3",
     "libp2p-crypto": "~0.16.0",
-    "libp2p-kad-dht": "~0.14.4",
+    "libp2p-kad-dht": "~0.14.5",
     "libp2p-keychain": "~0.3.3",
     "libp2p-mdns": "~0.12.0",
     "libp2p-mplex": "~0.8.4",
diff --git a/src/core/components/libp2p.js b/src/core/components/libp2p.js
index 24754b02bf..24f0574e4c 100644
--- a/src/core/components/libp2p.js
+++ b/src/core/components/libp2p.js
@@ -93,7 +93,10 @@ function defaultBundle ({ datastore, peerInfo, peerBook, options, config }) {
       }
     },
     connectionManager: get(options, 'connectionManager',
-      get(config, 'connectionManager', {}))
+      {
+        maxPeers: get(config, 'Swarm.ConnMgr.HighWater'),
+        minPeers: get(config, 'Swarm.ConnMgr.LowWater')
+      })
   }
 
   const libp2pOptions = defaultsDeep(get(options, 'libp2p', {}), libp2pDefaults)
diff --git a/src/core/runtime/config-browser.js b/src/core/runtime/config-browser.js
index ca8c99e153..61e31eca36 100644
--- a/src/core/runtime/config-browser.js
+++ b/src/core/runtime/config-browser.js
@@ -25,5 +25,11 @@ module.exports = () => ({
     '/dns4/nyc-2.bootstrap.libp2p.io/tcp/443/wss/ipfs/QmSoLV4Bbm51jM9C4gDYZQ9Cy3U6aXMJDAbzgu2fzaDs64',
     '/dns4/node0.preload.ipfs.io/tcp/443/wss/ipfs/QmZMxNdpMkewiVZLMRxaNxUeZpDUb34pWjZ1kZvsd16Zic',
     '/dns4/node1.preload.ipfs.io/tcp/443/wss/ipfs/Qmbut9Ywz9YEDrz8ySBSgWyJk41Uvm2QJPhwDJzJyGFsD6'
-  ]
+  ],
+  Swarm: {
+    ConnMgr: {
+      LowWater: 600,
+      HighWater: 900
+    }
+  }
 })
diff --git a/src/core/runtime/config-nodejs.js b/src/core/runtime/config-nodejs.js
index 5b301d1e20..4cc6584fe0 100644
--- a/src/core/runtime/config-nodejs.js
+++ b/src/core/runtime/config-nodejs.js
@@ -38,5 +38,11 @@ module.exports = () => ({
     '/ip6/2604:a880:1:20::1d9:6001/tcp/4001/ipfs/QmSoLju6m7xTh3DuokvT3886QRYqxAzb1kShaanJgW36yx',
     '/dns4/node0.preload.ipfs.io/tcp/443/wss/ipfs/QmZMxNdpMkewiVZLMRxaNxUeZpDUb34pWjZ1kZvsd16Zic',
     '/dns4/node1.preload.ipfs.io/tcp/443/wss/ipfs/Qmbut9Ywz9YEDrz8ySBSgWyJk41Uvm2QJPhwDJzJyGFsD6'
-  ]
+  ],
+  Swarm: {
+    ConnMgr: {
+      LowWater: 600,
+      HighWater: 900
+    }
+  }
 })