feat: limit connections number

Author: vasco-santos

package.json

@@ -126,10 +126,10 @@
     "joi": "^14.3.0",
     "joi-browser": "^13.4.0",
     "joi-multiaddr": "^4.0.0",
-    "libp2p": "~0.25.0-rc.0",
+    "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",

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)

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
+    }
+  }
 })

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
+    }
+  }
 })