/// <summary>
/// Requests close neighbors from the remote peer. The remote peer may indicate if the
/// data is present on that peer. This is an RPC.
/// </summary>
/// <param name="remotePeer">The remote peer to send this request to.</param>
/// <param name="searchValues">The values to search for in the storage.</param>
/// <param name="type">The type of the neighbor request:
/// - Request1 for Neighbors means check for Put (no digest) for tracker and storage.
/// - Request2 for Neighbors means check for Get (with digest) for storage.
/// - Request3 for Neighbors means check for Get (with digest) for tracker.
/// - Request4 for Neighbors means check for Put (with digest) for task.</param>
/// <param name="channelCreator">The channel creator that creates connections.</param>
/// <param name="configuration">The client-side connection configuration.</param>
/// <returns>The future response message.</returns>
public Task <Message.Message> CloseNeighborsAsync(PeerAddress remotePeer, SearchValues searchValues, Message.Message.MessageType type,
ChannelCreator channelCreator, IConnectionConfiguration configuration)
{
var tcsResponse = CloseNeighborsTcs(remotePeer, searchValues, type, channelCreator, configuration);
return(tcsResponse.Task);
}
/// <summary>
/// .NET-specific: Used for DistributedRouting only.
/// </summary>
internal TaskCompletionSource<Message.Message> CloseNeighborsTcs(PeerAddress remotePeer, SearchValues searchValues, Message.Message.MessageType type,
ChannelCreator channelCreator, IConnectionConfiguration configuration)
{
var message = CreateRequestMessage(remotePeer, Rpc.Commands.Neighbor.GetNr(), type);
if (!message.IsRequest())
{
throw new ArgumentException("The type must be a request.");
}
message.SetKey(searchValues.LocationKey);
message.SetKey(searchValues.DomainKey ?? Number160.Zero);
if (searchValues.From != null && searchValues.To != null)
{
ICollection<Number640> collection = new List<Number640>();
collection.Add(searchValues.From);
collection.Add(searchValues.To);
var keyCollection = new KeyCollection(collection);
message.SetKeyCollection(keyCollection);
}
else
{
if (searchValues.ContentKey != null)
{
message.SetKey(searchValues.ContentKey);
}
if (searchValues.KeyBloomFilter != null)
{
message.SetBloomFilter(searchValues.KeyBloomFilter);
}
if (searchValues.ContentBloomFilter != null)
{
message.SetBloomFilter(searchValues.ContentBloomFilter);
}
}
return Send(message, configuration, channelCreator);
}
/// <summary>
/// .NET-specific: Used for DistributedRouting only.
/// </summary>
internal TaskCompletionSource <Message.Message> CloseNeighborsTcs(PeerAddress remotePeer, SearchValues searchValues, Message.Message.MessageType type,
ChannelCreator channelCreator, IConnectionConfiguration configuration)
{
var message = CreateRequestMessage(remotePeer, Rpc.Commands.Neighbor.GetNr(), type);
if (!message.IsRequest())
{
throw new ArgumentException("The type must be a request.");
}
message.SetKey(searchValues.LocationKey);
message.SetKey(searchValues.DomainKey ?? Number160.Zero);
if (searchValues.From != null && searchValues.To != null)
{
ICollection <Number640> collection = new List <Number640>();
collection.Add(searchValues.From);
collection.Add(searchValues.To);
var keyCollection = new KeyCollection(collection);
message.SetKeyCollection(keyCollection);
}
else
{
if (searchValues.ContentKey != null)
{
message.SetKey(searchValues.ContentKey);
}
if (searchValues.KeyBloomFilter != null)
{
message.SetBloomFilter(searchValues.KeyBloomFilter);
}
if (searchValues.ContentBloomFilter != null)
{
message.SetBloomFilter(searchValues.ContentBloomFilter);
}
}
return(Send(message, configuration, channelCreator));
}
public async void TestNeighborTcp()
{
Peer sender = null;
Peer recv1 = null;
try
{
sender = new PeerBuilder(new Number160("0x50"))
.SetMaintenanceTask(Utils2.CreateInfiniteIntervalMaintenanceTask())
.SetChannelServerConfiguration(Utils2.CreateInfiniteTimeoutChannelServerConfiguration(2424, 2424))
.SetP2PId(55)
.SetPorts(2424)
.Start();
// add neighbors to the sender's peer map
var addresses = Utils2.CreateDummyAddresses(300, PortTcp, PortUdp);
for (int i = 0; i < addresses.Length; i++)
{
sender.PeerBean.PeerMap.PeerFound(addresses[i], null, null);
}
// register neighbor RPC handlers
var neighbors1 = new NeighborRpc(sender.PeerBean, sender.ConnectionBean); // TODO needed? registering?
recv1 = new PeerBuilder(new Number160("0x20"))
.SetMaintenanceTask(Utils2.CreateInfiniteIntervalMaintenanceTask())
.SetChannelServerConfiguration(Utils2.CreateInfiniteTimeoutChannelServerConfiguration(8088, 8088))
.SetP2PId(55)
.SetPorts(8088)
.Start();
var neighbors2 = new NeighborRpc(recv1.PeerBean, recv1.ConnectionBean);
// ask sender for his neighbors
var cc = await recv1.ConnectionBean.Reservation.CreateAsync(0, 1);
var sv = new SearchValues(new Number160("0x1"), null);
var infConfig = Utils2.CreateInfiniteConfiguration()
.SetIsForceTcp();
var tr = neighbors2.CloseNeighborsAsync(sender.PeerAddress, sv, Message.MessageType.Request2, cc,
infConfig);
await tr;
Assert.IsTrue(!tr.IsFaulted);
// check if receiver got the neighbors
var neighborSet = tr.Result.NeighborsSet(0);
// 33 peer addresses can be stored in 1000 bytes (NeighborsLimit)
Assert.IsTrue(neighborSet.Size == 33);
var neighbors = neighborSet.Neighbors.ToList();
Assert.AreEqual(new Number160("0x1"), neighbors[0].PeerId);
Assert.AreEqual(PortTcp, neighbors[1].TcpPort);
Assert.AreEqual(PortUdp, neighbors[2].UdpPort);
await cc.ShutdownAsync();
}
finally
{
if (sender != null)
{
sender.ShutdownAsync().Wait();
}
if (recv1 != null)
{
recv1.ShutdownAsync().Wait();
}
}
}
public async void TestNeighborFail()
{
Peer sender = null;
Peer recv1 = null;
try
{
sender = new PeerBuilder(new Number160("0x50"))
.SetMaintenanceTask(Utils2.CreateInfiniteIntervalMaintenanceTask())
.SetChannelServerConfiguration(Utils2.CreateInfiniteTimeoutChannelServerConfiguration(2424, 2424))
.SetP2PId(55)
.SetPorts(2424)
.Start();
recv1 = new PeerBuilder(new Number160("0x20"))
.SetMaintenanceTask(Utils2.CreateInfiniteIntervalMaintenanceTask())
.SetChannelServerConfiguration(Utils2.CreateInfiniteTimeoutChannelServerConfiguration(8088, 8088))
.SetP2PId(55)
.SetPorts(2424)
.Start();
var neighbors1 = new NeighborRpc(sender.PeerBean, sender.ConnectionBean);
var neighbors2 = new NeighborRpc(recv1.PeerBean, recv1.ConnectionBean);
var cc = await recv1.ConnectionBean.Reservation.CreateAsync(1, 0);
try
{
var sv = new SearchValues(new Number160("0x30"), null);
var infConfig = Utils2.CreateInfiniteConfiguration();
await
neighbors2.CloseNeighborsAsync(sender.PeerAddress, sv, Message.MessageType.Exception, cc,
infConfig);
Assert.Fail("ArgumentException should have been thrown.");
}
catch (ArgumentException)
{
cc.ShutdownAsync().Wait();
}
}
finally
{
if (sender != null)
{
sender.ShutdownAsync().Wait();
}
if (recv1 != null)
{
recv1.ShutdownAsync().Wait();
}
}
}
public async void TestNeighbor2()
{
Peer sender = null;
Peer recv1 = null;
try
{
sender = new PeerBuilder(new Number160("0x50"))
.SetMaintenanceTask(Utils2.CreateInfiniteIntervalMaintenanceTask())
.SetChannelServerConfiguration(Utils2.CreateInfiniteTimeoutChannelServerConfiguration(2424, 2424))
.SetP2PId(55)
.SetPorts(2424)
.Start();
recv1 = new PeerBuilder(new Number160("0x20"))
.SetMaintenanceTask(Utils2.CreateInfiniteIntervalMaintenanceTask())
.SetChannelServerConfiguration(Utils2.CreateInfiniteTimeoutChannelServerConfiguration(8088, 8088))
.SetP2PId(55)
.SetPorts(2424)
.Start();
var neighbors1 = new NeighborRpc(sender.PeerBean, sender.ConnectionBean);
var neighbors2 = new NeighborRpc(recv1.PeerBean, recv1.ConnectionBean);
var cc = await recv1.ConnectionBean.Reservation.CreateAsync(1, 0);
var sv = new SearchValues(new Number160("0x30"), null);
var infConfig = Utils2.CreateInfiniteConfiguration();
var tr = neighbors2.CloseNeighborsAsync(sender.PeerAddress, sv, Message.MessageType.Request2, cc,
infConfig);
await tr;
Assert.IsTrue(!tr.IsFaulted);
var addresses = tr.Result.NeighborsSet(0);
// I see noone, not even myself. My peer was added in the overflow map.
Assert.AreEqual(0, addresses.Size);
await cc.ShutdownAsync();
}
finally
{
if (sender != null)
{
sender.ShutdownAsync().Wait();
}
if (recv1 != null)
{
recv1.ShutdownAsync().Wait();
}
}
}
/// <summary>
/// Requests close neighbors from the remote peer. The remote peer may indicate if the
/// data is present on that peer. This is an RPC.
/// </summary>
/// <param name="remotePeer">The remote peer to send this request to.</param>
/// <param name="searchValues">The values to search for in the storage.</param>
/// <param name="type">The type of the neighbor request:
/// - Request1 for Neighbors means check for Put (no digest) for tracker and storage.
/// - Request2 for Neighbors means check for Get (with digest) for storage.
/// - Request3 for Neighbors means check for Get (with digest) for tracker.
/// - Request4 for Neighbors means check for Put (with digest) for task.</param>
/// <param name="channelCreator">The channel creator that creates connections.</param>
/// <param name="configuration">The client-side connection configuration.</param>
/// <returns>The future response message.</returns>
public Task<Message.Message> CloseNeighborsAsync(PeerAddress remotePeer, SearchValues searchValues, Message.Message.MessageType type,
ChannelCreator channelCreator, IConnectionConfiguration configuration)
{
var tcsResponse = CloseNeighborsTcs(remotePeer, searchValues, type, channelCreator, configuration);
return tcsResponse.Task;
}
