public async Task Connect_IsPending()
{
var swarm = new Swarm {
LocalPeer = self
};
var venus = new Peer
{
Id = "QmaCpDMGvV2BGHeYERUEnRQAwe3N8SzbUtfsmvsqQLuvuJ",
Addresses = new MultiAddress[]
{
"/ip4/104.131.131.82/tcp/4001/ipfs/QmaCpDMGvV2BGHeYERUEnRQAwe3N8SzbUtfsmvsqQLuvuJ", // mars.i.ipfs.io
}
};
await swarm.StartAsync();
try
{
Assert.IsFalse(swarm.HasPendingConnection(venus));
var a = swarm.ConnectAsync(venus);
Assert.IsTrue(swarm.HasPendingConnection(venus));
}
finally
{
await swarm.StopAsync();
}
}
#pragma warning disable VSTHRD100 // Avoid async void methods
/// <summary>
/// Called when the swarm has lost a connection to a peer.
/// </summary>
/// <param name="sender">
/// The swarm of peers.
/// </param>
/// <param name="disconnectedPeer">
/// The peer that was disconnected.
/// </param>
/// <remarks>
/// If the <see cref="MinConnections"/> is not reached, then another
/// peer is dialed.
/// </remarks>
async void OnPeerDisconnected(object sender, Peer disconnectedPeer)
#pragma warning restore VSTHRD100 // Avoid async void methods
{
var n = swarm.Manager.Connections.Count() + pendingConnects;
if (!swarm.IsRunning || n >= MinConnections)
{
return;
}
// Find a random peer to connect with.
var peers = swarm.KnownPeers
.Where(p => p.ConnectedAddress == null)
.Where(p => p != disconnectedPeer)
.Where(p => swarm.IsAllowed(p))
.Where(p => !swarm.HasPendingConnection(p))
.ToArray();
if (peers.Length == 0)
{
return;
}
var rng = new Random();
var peer = peers[rng.Next(peers.Count())];
Interlocked.Increment(ref pendingConnects);
log.Debug($"Dialing {peer}");
try
{
await swarm.ConnectAsync(peer).ConfigureAwait(false);
}
catch (Exception)
{
log.Warn($"Failed to dial {peer}");
}
finally
{
Interlocked.Decrement(ref pendingConnects);
}
}