private void reload_leave_inbound(ReloadMessage recmsg)
{
LeaveReqAns req_answ = (LeaveReqAns)recmsg.reload_message_body;
NodeId OriginatorID = recmsg.OriginatorID;
if (req_answ.RELOAD_MsgCode == RELOAD_MessageCode.Leave_Request)
{
// Leaving nodes will be stored for 2 minutes to make sure we do not learn about them again
m_topology.routing_table.AddLeavingNode(req_answ.LeavingNode);
m_topology.InboundLeave(req_answ.LeavingNode);
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_RELOAD, String.Format("{0} ==> {1} TransId={2:x16}",
RELOAD_MessageCode.Leave_Answer.ToString().PadRight(16, ' '), OriginatorID, recmsg.TransactionID));
ReloadMessage sendmsg = create_leave_answ(new Destination(OriginatorID), recmsg.TransactionID);
recmsg.PutViaListToDestination(sendmsg);
send(sendmsg, m_topology.routing_table.GetNode(recmsg.LastHopNodeId));
}
else
{
}
}
public ReloadMessage create_reload_message(ReloadMessage reloadRequest)
{
try
{
reloadRequest.PutViaListToDestination();
}
catch (Exception ex)
{
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ERROR,
"create_reload_message: " + ex.Message);
}
return reloadRequest;
}
/// <summary>
/// Handles incoming fetch requests
/// </summary>
/// <param name="recmsg"></param>
private void reload_fetch_inbound(ReloadMessage recmsg)
{
ReloadMessage sendmsg;
if (recmsg.IsRequest())
{
FetchReq fetchRequest = (FetchReq)recmsg.reload_message_body;
NodeId originatorId = recmsg.OriginatorID;
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_RELOAD,
String.Format("{0} ==> {1} TransId={2:x16}",
RELOAD_MessageCode.Fetch_Answer.ToString().PadRight(16, ' '),
originatorId, recmsg.TransactionID));
// List of SignerIdentities of the data to be fetched
List<SignerIdentity> signers = new List<SignerIdentity>();
var fetchKindResponses = new List<FetchKindResponse>();
foreach (StoredDataSpecifier specifier in fetchRequest.Specifiers)
{
FetchKindResponse fetchKindResponse;
if (m_topology.Fetch(fetchRequest.ResourceId,
specifier, out fetchKindResponse))
{
fetchKindResponses.Add(fetchKindResponse);
// add certificate
foreach (StoredData data in fetchKindResponse.values)
if (!signers.Contains(data.Signature.Identity))
signers.Add(data.Signature.Identity);
}
else
{
sendmsg = create_erro_reply(new Destination(originatorId),
RELOAD_ErrorCode.Error_Not_Found,
"Topology: RessourceId not found", recmsg.TransactionID);
recmsg.PutViaListToDestination(sendmsg);
send(sendmsg, m_topology.routing_table.GetNode(recmsg.LastHopNodeId));
return;
}
}
sendmsg = create_fetch_answ(new Destination(originatorId), recmsg.TransactionID, fetchKindResponses);
// get certificates for this data
List<GenericCertificate> certs = new List<GenericCertificate>();
certs.AddRange(m_ReloadConfig.AccessController.GetPKCs(signers));
// add certificates to fetch answer
sendmsg.security_block.Certificates.AddRange(certs);
recmsg.PutViaListToDestination(sendmsg);
//sendmsg.addOverlayForwardingOptions(recmsg); //Proprietary //--Joscha
if (m_machine is GWMachine)
{ //workaround in case date is stored at the gateway node responsible to route the message back into the interconnectionoverlay
if (sendmsg.forwarding_header.destination_list[0].destination_data.node_id == ((GWMachine)m_machine).GateWay.interDomainPeer.Topology.LocalNode.Id)
{
sendmsg.reload_message_body.RELOAD_MsgCode = RELOAD_MessageCode.Fetch_Answer;
((GWMachine)m_machine).GateWay.interDomainPeer.Inject(sendmsg); //TODO: change other cases
}
else
send(sendmsg, m_topology.routing_table.GetNode(recmsg.LastHopNodeId));
}
else
send(sendmsg, m_topology.routing_table.GetNode(recmsg.LastHopNodeId));
}
else
{
// It is a FetchAns, no reply needed
}
}
private void reload_ping_inbound(ReloadMessage recmsg)
{
PingReqAns req_answ = (PingReqAns)recmsg.reload_message_body;
NodeId originatorID = recmsg.OriginatorID;
if (recmsg.IsRequest())
{
// is still my Finger?
/*
Topology.RoutingTable.FTableEntry ftEntry;
if (m_topology.routing_table.isFinger(originatorID, out ftEntry)) {
if (m_topology.routing_table.IsAttached(originatorID))
Arbiter.Activate(m_DispatcherQueue,
new IterativeTask<Topology.RoutingTable.FTableEntry, ReloadMessage>(
ftEntry, recmsg, AttachFinger));
}
*/
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_RELOAD,
String.Format("{0} ==> {1} TransId={2:x16}",
RELOAD_MessageCode.Ping_Answer.ToString().PadRight(16, ' '),
originatorID, recmsg.TransactionID));
ReloadMessage sendmsg = create_ping_answ(new Destination(originatorID), recmsg.TransactionID);
recmsg.PutViaListToDestination(sendmsg);
send(sendmsg, m_topology.routing_table.GetNode(recmsg.LastHopNodeId));
}
else
{
}
}
/// <summary>
/// Handles incoming StoreReq messages.
/// </summary>
/// <param name="recmg">The received RELOAD message</param>
private void reload_store_inbound(ReloadMessage recmsg)
{
if (recmsg.IsRequest())
{
StoreReq storeRequest = (StoreReq)recmsg.reload_message_body;
NodeId originatorID = recmsg.OriginatorID;
List<StoreKindData> recStoreKindData;
// TODO: For now add certificate to global PKC Store, but they are only temporarilly needed in validateDataSignature
m_ReloadConfig.AccessController.SetPKCs(recmsg.security_block.Certificates);
Boolean validRequest = true;
recStoreKindData = storeRequest.StoreKindData;
// validate data signature
foreach (StoreKindData store_kind in recStoreKindData)
{
foreach (StoredData sd in store_kind.Values)
{
if (!m_ReloadConfig.AccessController.validateDataSignature(storeRequest.ResourceId, store_kind.Kind, sd))
{
validRequest = false;
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_TOPO, "DATA SIGNATURE INVALID!! Store Failed!!");
}
}
}
if (storeRequest.Replica_number == 1)
{
// find sender in my predecessors
int sender = m_topology.routing_table.Predecessors.IndexOf(recmsg.OriginatorID);
// sender not in my predecessors
if (sender < 0)
validRequest = false;
// we are able to perform validity checks
if (m_topology.routing_table.Predecessors.Count > 2)
{
if (!storeRequest.ResourceId.ElementOfInterval(m_topology.routing_table.Predecessors[sender + 1], m_topology.routing_table.Predecessors[sender], true))
// is the storing peer responsible for that resourceId?
validRequest = false;
}
}
// REPLICATEST
if (validRequest)
{
if (storeRequest.Replica_number == 1)
{
if (!m_topology.Replicas.Contains(storeRequest.ResourceId.ToString()))
{
m_topology.Replicas.Add(storeRequest.ResourceId.ToString());
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ALL, String.Format("Add Ressource {0} as Replica", storeRequest.ResourceId.ToString()));
}
}
if (storeRequest.Replica_number == 0 && m_topology.Replicas.Contains(storeRequest.ResourceId.ToString()))
{
m_topology.Replicas.Remove(storeRequest.ResourceId.ToString());
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ALL, String.Format("My Predecessor left. I'm now responsible for data {0}. Remove replica", storeRequest.ResourceId.ToString()));
}
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_RELOAD,
String.Format("{0} ==> {1} via: {3:x20} TransId={2:x16}",
RELOAD_MessageCode.Store_Answer.ToString().PadRight(16, ' '),
originatorID, recmsg.TransactionID, recmsg.LastHopNodeId));
//recStoreKindData = storeRequest.StoreKindData;
foreach (StoreKindData store_kind in recStoreKindData)
{
m_topology.Store(storeRequest.ResourceId, store_kind);
}
/* It then sends a Store request to its successor in the neighbor
* table and to that peer's successor.
*
* see RELOAD base -12 p.104
*/
List<NodeId> replicaNodes = new List<NodeId>();
NodeId successor = m_topology.routing_table.GetApprovedSuccessor();
BigInt nextSuccsessor = successor + 1;
NodeId successorsSuccessor = m_topology.routing_table.FindNextHopTo(
new NodeId(nextSuccsessor.Data), true, false).Id;
replicaNodes.Add(successor);
replicaNodes.Add(successorsSuccessor);
// send StoreAns to originator
ReloadMessage storeAnswer = create_store_answ(
new Destination(originatorID), recmsg.TransactionID, recStoreKindData,
replicaNodes);
recmsg.PutViaListToDestination(storeAnswer);
//storeAnswer.addOverlayForwardingOptions(recmsg); //Proprietary //--Joscha
Node nextHop = m_topology.routing_table.GetNode(recmsg.LastHopNodeId);
if (m_machine is GWMachine)
{ //workaround in case date is stored at the gateway node responsible to route the message back into the interconnectionoverlay
if (storeAnswer.forwarding_header.destination_list[0].destination_data.node_id == ((GWMachine)m_machine).GateWay.interDomainPeer.Topology.LocalNode.Id)
{
storeAnswer.reload_message_body.RELOAD_MsgCode = RELOAD_MessageCode.Fetch_Answer;
((GWMachine)m_machine).GateWay.interDomainPeer.Transport.receive_message(storeAnswer);
}
else
send(storeAnswer, nextHop);
}
else
send(storeAnswer, nextHop);
// REPLICATEST
// incoming store request is not a replication request
if (storeRequest.Replica_number == 0)
{
int numberReplicas = m_topology.routing_table.Successors.Count >= 2 ? 2 : m_topology.routing_table.Successors.Count; // Replica number is max 2
// send replica to all successors
for (int i = 0; i < numberReplicas; i++)
{
NodeId successorNode = m_topology.routing_table.Successors[i];
ReloadMessage replica = create_store_req(new Destination(successorNode), storeRequest.ResourceId, recStoreKindData, true);
send(replica, m_topology.routing_table.GetNode(successorNode));
}
}
}
else
{
// Signature over data in Store Request was invalid. Respond with Error Message!
send(create_erro_reply(new Destination(recmsg.OriginatorID), RELOAD_ErrorCode.Error_Forbidden, "Invalid Data Signature", ++m_ReloadConfig.TransactionID),
m_topology.routing_table.GetNode(recmsg.LastHopNodeId));
}
}
// its a StoreAns
else
{
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_TOPO, String.Format("Received StoreAns from: {0}", recmsg.OriginatorID));
/* ...this allows the storing peer to independently verify that the replicas have in fact been stored.
* Note that the storing peer is not require to perform this verification.
* see RELOAD base -12 p.91
*/
}
}
private void reload_update_inbound(ReloadMessage recmsg)
{
UpdateReqAns req_answ = (UpdateReqAns)recmsg.reload_message_body;
NodeId OriginatorID = recmsg.OriginatorID;
Boolean force_send_update = false;
if (recmsg.IsRequest())
{
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_RELOAD,
String.Format("{0} ==> {1} TransId={2:x16}",
RELOAD_MessageCode.Update_Answer.ToString().PadRight(16, ' '),
OriginatorID, recmsg.TransactionID));
ReloadMessage sendmsg = create_update_answ(
new Destination(OriginatorID), recmsg.TransactionID,
RELOAD_ErrorCode.invalid);
recmsg.PutViaListToDestination(sendmsg);
send(sendmsg, m_topology.routing_table.GetNode(recmsg.LastHopNodeId));
//NodeId originator = recmsg.OriginatorID;
m_topology.routing_table.SetNodeState(OriginatorID,
NodeState.updates_received);
m_topology.routing_table.SetFingerState(OriginatorID,
NodeState.updates_received);
if (req_answ.Successors.Count > 0)
{
m_topology.routing_table.GetNode(OriginatorID).Successors = req_answ.Successors;
m_topology.routing_table.GetNode(OriginatorID).Predecessors = req_answ.Predecessors;
}
if (m_ReloadConfig.State == ReloadConfig.RELOAD_State.Joining)
{
if (m_ReloadConfig.AdmittingPeer != null &&
OriginatorID == m_ReloadConfig.AdmittingPeer.Id)
{
if (!m_topology.routing_table.IsWaitForJoinAnsw(OriginatorID))
{
//we received an update from admitting peer, now joining is complete
m_ReloadConfig.State = ReloadConfig.RELOAD_State.Joined;
m_machine.StateUpdates(ReloadConfig.RELOAD_State.Joined);
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_RELOAD,
String.Format("Joining completed"));
m_ReloadConfig.LastJoinedTime = DateTime.Now;
force_send_update = true;
}
}
}
//inform topo about incoming update
Arbiter.Activate(m_DispatcherQueue,
new IterativeTask<NodeId, UpdateReqAns, Boolean>(
OriginatorID, req_answ, force_send_update, m_topology.routing_table.Merge));
// delete old entries in LeavingTable
List<NodeId> expiredNodes = new List<NodeId>();
foreach (KeyValuePair<NodeId, DateTime> entry in m_topology.routing_table.LeavingNodes)
{
if (entry.Value.AddSeconds(300) < DateTime.Now)
expiredNodes.Add(entry.Key);
}
foreach (NodeId id in expiredNodes)
m_topology.routing_table.LeavingNodes.Remove(id);
}
else
{
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_TOPO, "Incoming UpdateAns");
}
}
private void reload_join_inbound(ReloadMessage recmsg)
{
JoinReqAns req_answ = (JoinReqAns)recmsg.reload_message_body;
NodeId OriginatorID = recmsg.OriginatorID;
if (recmsg.IsRequest())
{
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_RELOAD, String.Format("{0} ==> {1} TransId={2:x16}",
RELOAD_MessageCode.Join_Answer.ToString().PadRight(16, ' '), OriginatorID, recmsg.TransactionID));
/* leaving Address and port empty, that should already be stored in link management tables */
// 5. JP MUST send a Join to AP. The AP sends the response to the
// Join. RELOAD base -13 .105
ReloadMessage sendmsg = create_join_answ(new Destination(OriginatorID), recmsg.TransactionID);
recmsg.PutViaListToDestination(sendmsg);
send(sendmsg, m_topology.routing_table.GetNode(recmsg.LastHopNodeId));
/* AP MUST send JP an Update explicitly labeling JP as its predecessor. */
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_INFO, String.Format("Send update on join"));
Arbiter.Activate(m_DispatcherQueue,
new IterativeTask<Node, Node>(
m_topology.routing_table.GetNode(OriginatorID),
m_topology.routing_table.GetNode(recmsg.LastHopNodeId), SendUpdate));
if (m_ReloadConfig.IsBootstrap && m_ReloadConfig.State != ReloadConfig.RELOAD_State.Joined)
{
m_ReloadConfig.State = ReloadConfig.RELOAD_State.Joined;
m_machine.StateUpdates(ReloadConfig.RELOAD_State.Joined);
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_INFO,
String.Format("Changed to joined state"));
}
}
else
{
}
}
public void reload_app_attach_inbound(ReloadMessage recmsg)
{
AppAttachReqAns req_answ = (AppAttachReqAns)recmsg.reload_message_body;
NodeId OriginatorID = recmsg.OriginatorID;
Node Originator = new Node(recmsg.OriginatorID, req_answ.ice_candidates);
m_topology.routing_table.AddNode(Originator);
m_topology.routing_table.SetNodeState(Originator.Id, NodeState.attached);
//Proprietary --joscha
string destination_overlay = null;
string source_overlay = null;
if (recmsg.forwarding_header.fw_options != null)
{
foreach (ForwardingOption option in recmsg.forwarding_header.fw_options)
{
if (option.fwo_type == ForwardingOptionsType.destinationOverlay)
{
destination_overlay = System.Text.Encoding.Unicode.GetString(option.bytes);
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ERROR, String.Format("{0} Message for destinationOverlay=" + destination_overlay, recmsg.reload_message_body.RELOAD_MsgCode));
}
if (option.fwo_type == ForwardingOptionsType.sourceOverlay)
{
source_overlay = System.Text.Encoding.Unicode.GetString(option.bytes);
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ERROR, String.Format("Message from sourceOverlay=" + source_overlay));
}
}
}
if (destination_overlay == null)// --joscha Do not establish a connection to a different overlay
if (CheckAndSetAdmittingPeer(Originator) && Originator.Id != recmsg.LastHopNodeId)
// Send ping to establish a physical connection
Arbiter.Activate(m_DispatcherQueue,
new IterativeTask<Destination, PingOption>(new Destination(Originator.Id),
PingOption.direct, SendPing));
if (source_overlay == m_ReloadConfig.OverlayName)
{
// Send ping to establish a physical connection
Arbiter.Activate(m_DispatcherQueue,
new IterativeTask<Destination, PingOption>(new Destination(Originator.Id),
PingOption.direct, SendPing));
}
if (req_answ != null && req_answ.ice_candidates != null)
{
if (recmsg.IsRequest())
{
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_INFO, String.Format("transport.cs - reload_app_attach_inbound"));
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_RELOAD,
String.Format("{0} ==> {1} TransId={2:x16}",
RELOAD_MessageCode.App_Attach_Answer.ToString().PadRight(16, ' '),
OriginatorID, recmsg.TransactionID));
ReloadMessage sendmsg = create_app_attach_answ(
new Destination(OriginatorID), recmsg.TransactionID);
recmsg.PutViaListToDestination(sendmsg);
//sendmsg.addOverlayForwardingOptions(recmsg); //--joscha
send(sendmsg, m_topology.routing_table.GetNode(recmsg.LastHopNodeId));
}
else
{
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ERROR, String.Format("{0} <== {1} (not handled!!)", req_answ.RELOAD_MsgCode.ToString().PadRight(16, ' '), OriginatorID));
}
}
}
public void reload_attach_inbound(ReloadMessage recmsg)
{
try
{
AttachReqAns req_answ = (AttachReqAns)recmsg.reload_message_body;
NodeId OriginatorID = recmsg.OriginatorID;
if (req_answ != null && req_answ.ice_candidates != null)
{
//if (ReloadGlobals.UseNoIce || m_ReloadConfig.IsBootstrap)
//{
//Node attacher = new Node(recmsg.OriginatorID, req_answ.ice_candidates); // markus, moved down
//bool isFinger = m_topology.routing_table.isFinger(attacher.Id);
//m_topology.routing_table.AddNode(attacher);
//m_topology.routing_table.SetNodeState(recmsg.OriginatorID, NodeState.attached);
//}
// incoming ATTACH REQUEST, so localnode is controlled agent
if (recmsg.IsRequest())
{
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_RELOAD,
String.Format("{0} ==> {1} TransId={2:x16}",
RELOAD_MessageCode.Attach_Answer.ToString().PadRight(16, ' '),
OriginatorID, recmsg.TransactionID));
ReloadMessage sendmsg = create_attach_answ(
new Destination(OriginatorID), recmsg.TransactionID);
// log output
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_INFO, String.Format("Attach Request: Transaction ID: {0:x}", recmsg.TransactionID));
foreach (IceCandidate cand in ((AttachReqAns)sendmsg.reload_message_body).ice_candidates)
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_INFO, String.Format("Attach Request: Gathered local candidate for Answer: {0}:{1} (TransId: {2:x})", cand.addr_port.ipaddr.ToString(), cand.addr_port.port, sendmsg.TransactionID));
foreach (IceCandidate cand in req_answ.ice_candidates)
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_INFO, String.Format("Attach Request: Received remote candidate: {0}:{1} (TransId: {2:x})", cand.addr_port.ipaddr.ToString(), cand.addr_port.port, recmsg.TransactionID));
recmsg.PutViaListToDestination(sendmsg);
//sendmsg.addOverlayForwardingOptions(recmsg); //Proprietary //--Joscha
if (m_machine is GWMachine)
{ //workaround in case date is stored at the gateway node responsible to route the message back into the interconnectionoverlay
if (sendmsg.forwarding_header.destination_list[0].destination_data.node_id == ((GWMachine)m_machine).GateWay.interDomainPeer.Topology.LocalNode.Id)
{
sendmsg.reload_message_body.RELOAD_MsgCode = RELOAD_MessageCode.Fetch_Answer;
((GWMachine)m_machine).GateWay.interDomainPeer.Transport.receive_message(sendmsg);
}
else
send(sendmsg, m_topology.routing_table.GetNode(recmsg.LastHopNodeId));
}
else
{
send(sendmsg, m_topology.routing_table.GetNode(recmsg.LastHopNodeId));
}
// markus
if (!ReloadGlobals.UseNoIce) // using ICE
{
// we only need ICE processing if localnode is a peer (in case of bootstrap we need no checks)
if (!m_ReloadConfig.IsBootstrap)
{
#region ICE TODO
// localnode is Peer => ICE processing (this is controlled node)
AttachReqAns attachAnswer = (AttachReqAns)sendmsg.reload_message_body;
// deep copy of local and remote ice candidates
List<IceCandidate> localIceCandidatesCopy = new List<IceCandidate>();
List<IceCandidate> remoteIceCandidatesCopy = new List<IceCandidate>();
// local candidates
foreach (IceCandidate cand in attachAnswer.ice_candidates)
{
IceCandidate deepCopy = (IceCandidate)cand.Clone();
localIceCandidatesCopy.Add(deepCopy);
}
// remote candidates
foreach (IceCandidate cand in req_answ.ice_candidates)
{
IceCandidate deepCopy = (IceCandidate)cand.Clone();
remoteIceCandidatesCopy.Add(deepCopy);
}
// now form check list
//CheckList checkList = ICE.FormCheckList(attachAnswer.ice_candidates, req_answ.ice_candidates, false);
CheckList checkList = ICE.FormCheckList(localIceCandidatesCopy, remoteIceCandidatesCopy, false);
ICE.PrintCandidatePairList(checkList.candidatePairs);
Console.WriteLine("ThreadId: {0}, send_params einfügen: checkList count {1}", Thread.CurrentThread.ManagedThreadId, checkList.candidatePairs.Count);
// Add to connection queue
for (int i = 0; i < checkList.candidatePairs.Count; i++)
{
ReloadSendParameters send_params = new ReloadSendParameters()
{
connectionTableEntry = null,
destinationAddress = checkList.candidatePairs[i].remoteCandidate.addr_port.ipaddr,
port = checkList.candidatePairs[i].remoteCandidate.addr_port.port,
buffer = null,
frame = false,
done = new Port<bool>(),
// markus
connectionSocket = null,
};
// if key already exists => skip
if (!GetForwardingAndLinkManagementLayer().GetConnectionQueue().ContainsKey(checkList.candidatePairs[i].remoteCandidate))
GetForwardingAndLinkManagementLayer().GetConnectionQueue().Add(checkList.candidatePairs[i].remoteCandidate, send_params);
}
ICE.ScheduleChecks(checkList, m_ReloadConfig.Logger);
// Wait for signals of all succeded candidate pairs. Only one of the succeded candidate pairs is nominated
#region signaling
// wait for nomination signal
List<Thread> waitingThreads = new List<Thread>();
foreach (CandidatePair candPair in checkList.candidatePairs)
{
if (candPair.state == CandidatePairState.Succeeded)
{
switch (candPair.localCandidate.tcpType)
{
case TcpType.Active:
{
if (candPair.localCandidate.activeConnectingSocket != null)
{
Thread waitThread = new Thread(() =>
{
candPair.nominated = ICE.WaitForSignal(candPair.localCandidate.activeConnectingSocket);
});
waitingThreads.Add(waitThread);
waitThread.Start();
}
}
break;
case TcpType.Passive:
{
if (candPair.localCandidate.passiveAcceptedSocket != null)
{
Thread waitThread = new Thread(() =>
{
candPair.nominated = ICE.WaitForSignal(candPair.localCandidate.passiveAcceptedSocket);
});
waitingThreads.Add(waitThread);
waitThread.Start();
}
}
break;
case TcpType.SO:
{
if (candPair.localCandidate.soAcceptedSocket != null)
{
Thread waitThread = new Thread(() =>
{
candPair.nominated = ICE.WaitForSignal(candPair.localCandidate.soAcceptedSocket);
});
waitingThreads.Add(waitThread);
waitThread.Start();
}
else if (candPair.localCandidate.soConnectingSocket != null)
{
Thread waitThread = new Thread(() =>
{
candPair.nominated = ICE.WaitForSignal(candPair.localCandidate.soConnectingSocket);
});
waitingThreads.Add(waitThread);
waitThread.Start();
}
}
break;
} // switch
} // if
} // foreach
// wait for all threads
foreach (Thread waitingThread in waitingThreads)
{
waitingThread.Join();
}
#endregion
// choose pair
CandidatePair choosenPair = null;
// any nominated pair?
if (checkList.candidatePairs.Any(item => item.nominated == true))
{
choosenPair = checkList.candidatePairs.First(item => item.nominated == true);
}
// Close all sockets of all candidate pairs not nominated
//for (int i = 0; i < checkList.candidatePairs.Count; i++)
// if ((!checkList.candidatePairs[i].nominated) || (checkList.candidatePairs[i].state != CandidatePairState.Succeeded))
// ICE.CloseAllCandidateSockets(checkList.candidatePairs[i].localCandidate);
// add node with chosen remote candidate
if (choosenPair != null)
{
// save connection
//GetForwardingAndLinkManagementLayer().SaveConnection(choosenPair);
// get connection
Socket socket = GetForwardingAndLinkManagementLayer().GetConnection(choosenPair);
// Get IPAdress and Port of the attacher from attachers certificate cn
System.Security.Cryptography.X509Certificates.X509Certificate2 tempcert = new System.Security.Cryptography.X509Certificates.X509Certificate2(recmsg.security_block.Certificates[0].Certificate);
IPEndPoint attacherEndpoint =
new IPEndPoint(IPAddress.Parse(tempcert.SubjectName.Name.ToString().Split(':')[1]),
Convert.ToInt32( tempcert.SubjectName.Name.ToString().Split(':')[2]));
// StartReloadTLSClient
GetForwardingAndLinkManagementLayer().StartReloadTLSClient(OriginatorID, socket, attacherEndpoint);
// for all candidates send_params.done = true
for (int i = 0; i < checkList.candidatePairs.Count; i++)
{
ReloadSendParameters send_params;
GetForwardingAndLinkManagementLayer().GetConnectionQueue().TryGetValue(checkList.candidatePairs[i].remoteCandidate, out send_params);
if (send_params != null)
{
send_params.done.Post(true);
// remove from connection queue
GetForwardingAndLinkManagementLayer().GetConnectionQueue().Remove(checkList.candidatePairs[i].remoteCandidate);
}
}
List<IceCandidate> choosenRemoteCandidates = new List<IceCandidate>();
choosenRemoteCandidates.Add(choosenPair.remoteCandidate);
Node attacher = new Node(recmsg.OriginatorID, choosenRemoteCandidates);
bool isFinger = m_topology.routing_table.isFinger(attacher.Id);
m_topology.routing_table.AddNode(attacher);
m_topology.routing_table.SetNodeState(recmsg.OriginatorID, NodeState.attached);
}
// free all port mappings created by UPnP
foreach (IceCandidate cand in attachAnswer.ice_candidates)
{
if (cand.cand_type == CandType.tcp_nat)
{
UPnP upnp = new UPnP();
bool discovered = upnp.Discover(cand.rel_addr_port.ipaddr);
if (discovered)
upnp.DeletePortMapping(cand.addr_port.port, ProtocolType.Tcp);
}
}
#endregion
}
else
{
// localnode is bootstrap => no ICE processing
Node attacher = new Node(recmsg.OriginatorID, req_answ.ice_candidates);
bool isFinger = m_topology.routing_table.isFinger(attacher.Id);
m_topology.routing_table.AddNode(attacher);
m_topology.routing_table.SetNodeState(recmsg.OriginatorID, NodeState.attached);
}
}
// using NO ICE
else
{
Node attacher = new Node(recmsg.OriginatorID, req_answ.ice_candidates);
bool isFinger = m_topology.routing_table.isFinger(attacher.Id);
m_topology.routing_table.AddNode(attacher);
m_topology.routing_table.SetNodeState(recmsg.OriginatorID, NodeState.attached);
}
// markus end
if (req_answ.SendUpdate)
Arbiter.Activate(m_DispatcherQueue, new IterativeTask<Node, Node>(
m_topology.routing_table.GetNode(OriginatorID),
m_topology.routing_table.GetNode(recmsg.LastHopNodeId),
SendUpdate));
}
// incoming ATTACH ANSWER, so localnode is controlling agent
// and localnode must be a peer, because bootstraps dont create attach requests and because of this cant receive an attach answer
else
{
// using NOICE
if (ReloadGlobals.UseNoIce) // markus: added if/else statement
{
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_ERROR,
String.Format("{0} <== {1} (not handled!!)",
req_answ.RELOAD_MsgCode.ToString().PadRight(16, ' '), OriginatorID));
}
// using ICE
else
{
// get local candidates from request
List<IceCandidate> localCandidates = null;
bool gotLocalCandidate = m_attachRequestCandidates.TryGetValue(recmsg.TransactionID, out localCandidates);
// log output
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_INFO, String.Format("Attach Answer: Transaction ID: {0:x}", recmsg.TransactionID));
foreach (IceCandidate cand in localCandidates)
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_INFO, String.Format("Attach Answer: Got local candidate: {0}:{1} (TransId: {2:x})", cand.addr_port.ipaddr.ToString(), cand.addr_port.port, recmsg.TransactionID));
foreach (IceCandidate cand in req_answ.ice_candidates)
m_ReloadConfig.Logger(ReloadGlobals.TRACEFLAGS.T_INFO, String.Format("Attach Answer: Received remote candidate: {0}:{1} (TransId: {2:x})", cand.addr_port.ipaddr.ToString(), cand.addr_port.port, recmsg.TransactionID));
if (req_answ.ice_candidates != null)
{
// we need ice, except the answering peer is a bootstrap
bool needIce = true;
//// bootstrap responses with only one candidate
//if (req_answ.ice_candidates.Count == 1)
//{
// is it really a bootstrap?
if (req_answ.ice_candidates[0].cand_type == CandType.tcp_bootstrap)
{
// attached to a bootstrap, so we have to do nothing here, no ice processing needed
needIce = false;
}
//}
if (needIce)
{
#region ICE TODO
// ICE processing (this is controlling node)
if (gotLocalCandidate)
{
// deep copy of remote ice candidates
List<IceCandidate> remoteIceCandidatesCopy = new List<IceCandidate>();
// remote candidates
foreach (IceCandidate cand in req_answ.ice_candidates)
{
IceCandidate deepCopy = (IceCandidate)cand.Clone();
remoteIceCandidatesCopy.Add(deepCopy);
}
//CheckList checkList = ICE.FormCheckList(localCandidates, req_answ.ice_candidates, true);
CheckList checkList = ICE.FormCheckList(localCandidates, remoteIceCandidatesCopy, true);
ICE.PrintCandidatePairList(checkList.candidatePairs);
ICE.ScheduleChecks(checkList, m_ReloadConfig.Logger);
m_attachRequestCandidates.Remove(recmsg.TransactionID);
#region signaling
// any succeeded pair?
if (checkList.candidatePairs.Any(item => item.state == CandidatePairState.Succeeded))
{
// get all succeeded pairs
List<CandidatePair> succeededPairs = checkList.candidatePairs.Where(item => item.state == CandidatePairState.Succeeded).ToList();
// send nomination signal to peer
bool sentSuccessfull = false;
bool nominated;
int counter = 0;
foreach (CandidatePair pair in succeededPairs)
{
// simply nominate the first succeeded pair
if (counter == 0)
nominated = true;
else
nominated = false;
switch (pair.localCandidate.tcpType)
{
case TcpType.Active:
{
if (pair.localCandidate.activeConnectingSocket != null)
{
sentSuccessfull = ICE.SendSignal(pair.localCandidate.activeConnectingSocket, nominated);
pair.nominated = nominated;
}
}
break;
case TcpType.Passive:
{
if (pair.localCandidate.passiveAcceptedSocket != null)
{
sentSuccessfull = ICE.SendSignal(pair.localCandidate.passiveAcceptedSocket, nominated);
pair.nominated = nominated;
}
}
break;
case TcpType.SO:
{
if (pair.localCandidate.soAcceptedSocket != null)
{
sentSuccessfull = ICE.SendSignal(pair.localCandidate.soAcceptedSocket, nominated);
pair.nominated = nominated;
}
else if (pair.localCandidate.soConnectingSocket != null)
{
sentSuccessfull = ICE.SendSignal(pair.localCandidate.soConnectingSocket, nominated);
pair.nominated = nominated;
}
}
break;
} // switch
counter++;
} // foreach
if (sentSuccessfull)
{
}
#endregion // signaling
// Start Server here, if a nominated pair exists
if (checkList.candidatePairs.Any(item => item.nominated))
{
CandidatePair choosenPair = checkList.candidatePairs.First(item => item.nominated);
// save connection here too?
//GetForwardingAndLinkManagementLayer().SaveConnection(choosenPair);
// get connection
Socket socket = GetForwardingAndLinkManagementLayer().GetConnection(choosenPair);
// StartReloadTLSServer
GetForwardingAndLinkManagementLayer().StartReloadTLSServer(socket);
} // if (any nominated)
} // if (any succeeded pair)
// Close all sockets of all candidate pairs not nominated
//for (int i = 0; i < checkList.candidatePairs.Count; i++)
// if ((!checkList.candidatePairs[i].nominated) || (checkList.candidatePairs[i].state != CandidatePairState.Succeeded))
// ICE.CloseAllCandidateSockets(checkList.candidatePairs[i].localCandidate);
}
#endregion // ICE
}
// existing nat candidates to free?
if (localCandidates != null)
{
// free all port mappings created by UPnP
foreach (IceCandidate cand in localCandidates)
{
if (cand.cand_type == CandType.tcp_nat)
{
UPnP upnp = new UPnP();
bool discovered = upnp.Discover(cand.rel_addr_port.ipaddr);
if (discovered)
upnp.DeletePortMapping(cand.addr_port.port, ProtocolType.Tcp);
}
}
}
}
}
}
}
}
catch (Exception e)
{
throw;
}
}
