feat: add getMaxConnections method to connection manager (#2877)

Adds a method to expose the max connections config setting.

Author: achingbrain

packages/interface-compliance-tests/src/mocks/connection-manager.ts

@@ -97,6 +97,10 @@ class MockConnectionManager implements ConnectionManager, Startable {
     return map
   }
 
+  getMaxConnections (): number {
+    return 10_000
+  }
+
   async openConnection (peerId: PeerId | Multiaddr | Multiaddr[]): Promise<Connection> {
     if (isMultiaddr(peerId)) {
       throw new UnsupportedOperationError('Dialing multiaddrs not supported')

packages/interface-internal/src/connection-manager/index.ts

@@ -46,6 +46,12 @@ export interface ConnectionManager {
    */
   getConnectionsMap(): PeerMap<Connection[]>
 
+  /**
+   * Returns the configured maximum number of connections this connection
+   * manager will accept
+   */
+  getMaxConnections(): number
+
   /**
    * Open a connection to a remote peer
    *