/// <summary>
/// Function to receive peers from one or your peers peer list
/// </summary>
/// <param name="message">It is the message which is sent to the receiver</param>
private void ReceivedPeerFetch(PeerFetcherMessage message)
{
if (message.type.Equals(TypeCode.REQUEST))
{
var outgoing = new List <Peer>();
var incoming = message.peers;
// Adding sender to list
if (!InPeerList(message.fromUuid, _peers))
{
_peers.TryAdd(message.fromUuid, new Peer(message.fromUuid, message.fromIp));
}
//Checks whether a incomming peer exists in the peerlist.
foreach (var incomingPeer in incoming)
{
if (InPeerList(incomingPeer.GetUuid(), _peers))
{
break;
}
_peers.TryAdd(incomingPeer.GetUuid(), incomingPeer);
DiskHelper.ConsoleWrite("Peer added: " + incomingPeer.GetUuid());
}
foreach (var outGoingPeer in _peers)
{
if (InPeerList(outGoingPeer.Value.GetUuid(), incoming))
{
break;
}
if (outGoingPeer.Value.GetUuid() == message.fromUuid)
{
break;
}
outgoing.Add(outGoingPeer.Value);
}
message.CreateReply();
message.peers = outgoing;
message.Send();
}
else
{
// Rechieved response
foreach (Peer incomingPeer in message.peers)
{
if (InPeerList(incomingPeer.GetUuid(), _peers))
{
break;
}
if ((IdHandler.GetUuid().Equals(incomingPeer.GetUuid())))
{
break;
}
_peers.TryAdd(incomingPeer.GetUuid(), incomingPeer);
Console.WriteLine("Peer added: " + incomingPeer.GetUuid());
}
}
}
/// <summary>
/// Function to receive ping
/// </summary>
/// <param name="ping">The ping message to be received</param>
private void ReceivedPing(PingMessage ping)
{
// Update peer
foreach (var peer in _peers)
{
if (peer.Value.GetUuid().Equals(ping.fromUuid))
{
peer.Value.SetIp(ping.fromIp);
peer.Value.UpdateLastSeen();
peer.Value.SetOnline(true);
peer.Value.diskSpace = ping.diskSpace;
if (ping.type.Equals(TypeCode.RESPONSE))
{
peer.Value.AddPingToList(ping.GetElapsedTime());
}
}
}
// Respond to ping
if (ping.type.Equals(TypeCode.REQUEST))
{
ping.CreateReply();
ping.statusCode = StatusCode.OK;
ping.diskSpace = DiskHelper.GetTotalAvailableSpace(_path);
ping.Send();
}
else
{
// Received response, should send peerlist
var peerFetch =
new PeerFetcherMessage(GetAPeer(ping.fromUuid))
{
peers = this.GetPeerList()
};
// Removed the receiver from the list, as he should not add himself
foreach (Peer peer in peerFetch.peers)
{
if (string.Compare(peer.GetIp().Trim(), peerFetch.toIp.Trim(), StringComparison.Ordinal) == 0)
{
peerFetch.peers.Remove(peer);
break;
}
}
peerFetch.Send();
}
}
