public void Stop()
{
if (m_Disposed)
{
throw new ObjectDisposedException(this.GetType().FullName);
}
//-------------------------------------------------
//No registration happened previously - throw
//-------------------------------------------------
if (m_RegistrationHandle.IsInvalid || m_RegistrationHandle.IsClosed)
{
throw new InvalidOperationException(SR.GetString(SR.Pnrp_NoRegistrationFound));
}
//-------------------------------------------------
//Demand for the Unrestricted Pnrp Permission
//-------------------------------------------------
PnrpPermission.UnrestrictedPnrpPermission.Demand();
m_RegistrationHandle.Dispose();
m_PeerNameRecord = new PeerNameRecord();
m_RegisteredPeerName = null;
m_IsRegistered = false;
}
protected PeerNameRecord(SerializationInfo info, StreamingContext context)
{
m_Comment = info.GetString("_Comment");
m_Data = info.GetValue("_Data", typeof(byte[])) as byte[];
m_EndPointCollection = info.GetValue("_EndpointList", typeof(IPEndPointCollection)) as IPEndPointCollection;
m_PeerName = info.GetValue("_PeerName", typeof(PeerName)) as PeerName;
}
internal PeerNameResolverHelper(PeerName peerName, Cloud cloud, int MaxRecords, object userState, PeerNameResolver parent, int NewTraceEventId)
{
m_userState = userState;
m_PeerName = peerName;
m_Cloud = cloud;
m_MaxRecords = MaxRecords;
m_PeerNameResolverWeakReference = new WeakReference(parent);
m_TraceEventId = NewTraceEventId;
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, m_TraceEventId, "New PeerNameResolverHelper created with TraceEventID {0}", m_TraceEventId);
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, m_TraceEventId,
"\tPeerName: {0}, Cloud: {1}, MaxRecords: {2}, userState {3}, ParentReference {4}",
m_PeerName,
m_Cloud,
m_MaxRecords,
userState.GetHashCode(),
m_PeerNameResolverWeakReference.Target.GetHashCode()
);
}
/// <summary>
/// This constuctor popuates the PeerNameRecord and registers automatically
/// Registers with automatic address selection within the cloud
/// </summary>
/// <param name="name">PeerName to register</param>
/// <param name="port">Port to register on</param>
/// <param name="cloud">A specific cloud to regster in</param>///
public PeerNameRegistration(PeerName name, int port, Cloud cloud)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
if (cloud == null)
{
cloud = Cloud.Available;
}
if (port < IPEndPoint.MinPort || port > IPEndPoint.MaxPort)
{
throw new ArgumentOutOfRangeException("port", SR.GetString(SR.Pnrp_PortOutOfRange));
}
m_PeerNameRecord.PeerName = name;
m_Port = port;
m_Cloud = cloud;
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "Created a PeerNameRegistration with PeerName {0}, Port {1}, Cloud {2} - Proceeding to register", name, port, cloud);
}
public void ResolveAsync(PeerName peerName, Cloud cloud, int maxRecords, object userState)
{
//-------------------------------------------------
//Check arguments
//-------------------------------------------------
if (peerName == null)
{
throw new ArgumentNullException(SR.GetString(SR.Pnrp_PeerNameCantBeNull), "peerName");
}
if (cloud == null)
{
cloud = Cloud.Available;
}
if (maxRecords <= 0)
{
throw new ArgumentOutOfRangeException("maxRecords", SR.GetString(SR.Pnrp_MaxRecordsParameterMustBeGreaterThanZero));
}
if (m_ResolveCompleted == null)
{
throw new PeerToPeerException(SR.GetString(SR.Pnrp_AtleastOneEvenHandlerNeeded));
}
//---------------------------------------------------
//Demand CAS permissions
//---------------------------------------------------
PnrpPermission.UnrestrictedPnrpPermission.Demand();
//---------------------------------------------------------------
//No perf hit here, real native call happens only one time if it
//did not already happen
//---------------------------------------------------------------
UnsafeP2PNativeMethods.PnrpStartup();
//----------------------------------------------------
//userToken can't be null
//----------------------------------------------------
if (userState == null)
{
throw new ArgumentNullException(SR.GetString(SR.NullUserToken), "userState");
}
PeerNameResolverHelper peerNameResolverHelper = null;
//---------------------------------------------------
//The userToken can't be duplicate of what is in the
//current list. These are the requriments for the new Async model
//that supports multiple outstanding async calls
//---------------------------------------------------
int newTraceEventId = NewTraceEventId;
lock (m_PeerNameResolverHelperListLock)
{
if (m_PeerNameResolverHelperList.ContainsKey(userState))
{
throw new ArgumentException(SR.GetString(SR.DuplicateUserToken));
}
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, newTraceEventId,
"PeerNameResolverHelper is being created with TraceEventId {0}", newTraceEventId);
peerNameResolverHelper = new PeerNameResolverHelper(peerName, cloud, maxRecords, userState, this, newTraceEventId);
m_PeerNameResolverHelperList[userState] = peerNameResolverHelper;
}
try
{
//---------------------------------------------------
//Start resolution on that resolver
//---------------------------------------------------
peerNameResolverHelper.StartAsyncResolve();
}
catch
{
//---------------------------------------------------
//If an exception happens clear the userState from the
//list so that that token can be reused
//---------------------------------------------------
lock (m_PeerNameResolverHelperListLock)
{
m_PeerNameResolverHelperList.Remove(userState);
Logging.P2PTraceSource.TraceEvent(TraceEventType.Error, newTraceEventId,
"Removing userState token from pending list {0}", userState.GetHashCode());
}
throw;
}
}
public void ResolveAsync(PeerName peerName, int maxRecords, object userState)
{
ResolveAsync(peerName, Cloud.Available, maxRecords, userState);
}
public void ResolveAsync(PeerName peerName, Cloud cloud, object userState)
{
ResolveAsync(peerName, cloud, Int32.MaxValue, userState);
}
public void ResolveAsync(PeerName peerName, object userState)
{
ResolveAsync(peerName, Cloud.Available, Int32.MaxValue, userState);
}
public PeerNameRecordCollection Resolve(PeerName peerName, Cloud cloud, int maxRecords)
{
//---------------------------------------------------
//Check arguments
//---------------------------------------------------
if (peerName == null)
{
throw new ArgumentNullException(SR.GetString(SR.Pnrp_PeerNameCantBeNull), "peerName");
}
if (maxRecords <= 0)
{
throw new ArgumentOutOfRangeException("maxRecords", SR.GetString(SR.Pnrp_MaxRecordsParameterMustBeGreaterThanZero));
}
//---------------------------------------------------
//Assume all clouds if the clould passed is null?
//---------------------------------------------------
if (cloud == null)
{
cloud = Cloud.Available;
}
//---------------------------------------------------
//Demand CAS permissions
//---------------------------------------------------
PnrpPermission.UnrestrictedPnrpPermission.Demand();
//---------------------------------------------------------------
//No perf hit here, real native call happens only one time if it
//did not already happen
//---------------------------------------------------------------
UnsafeP2PNativeMethods.PnrpStartup();
//---------------------------------------------------------------
//Trace log
//---------------------------------------------------------------
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "Sync Resolve called with PeerName: {0}, Cloud: {1}, MaxRecords {2}", peerName, cloud, maxRecords);
SafePeerData shEndPointInfoArray;
string NativeCloudName = cloud.InternalName;
UInt32 ActualCountOfEndPoints = (UInt32)maxRecords;
int result = UnsafeP2PNativeMethods.PeerPnrpResolve(peerName.ToString(),
NativeCloudName,
ref ActualCountOfEndPoints,
out shEndPointInfoArray);
if (result != 0)
{
throw PeerToPeerException.CreateFromHr(SR.GetString(SR.Pnrp_CouldNotStartNameResolution), result);
}
//---------------------------------------------------
//If there are no endpoints returned, return
//an empty PeerNameRecord Collection
//---------------------------------------------------
PeerNameRecordCollection PeerNameRecords = new PeerNameRecordCollection();
if (ActualCountOfEndPoints != 0)
{
try
{
unsafe
{
IntPtr pEndPointInfoArray = shEndPointInfoArray.DangerousGetHandle();
PEER_PNRP_ENDPOINT_INFO *pEndPoints = (PEER_PNRP_ENDPOINT_INFO *)pEndPointInfoArray;
for (int i = 0; i < ActualCountOfEndPoints; i++)
{
PeerNameRecord record = new PeerNameRecord();
PEER_PNRP_ENDPOINT_INFO *pEndPointInfo = &pEndPoints[i];
record.PeerName = new PeerName(Marshal.PtrToStringUni(pEndPointInfo->pwszPeerName));
string comment = Marshal.PtrToStringUni(pEndPointInfo->pwszComment);
if (comment != null && comment.Length > 0)
{
record.Comment = comment;
}
if (pEndPointInfo->payLoad.cbPayload != 0)
{
record.Data = new byte[pEndPointInfo->payLoad.cbPayload];
Marshal.Copy(pEndPointInfo->payLoad.pbPayload, record.Data, 0, (int)pEndPointInfo->payLoad.cbPayload);
}
//record.EndPointList = new IPEndPoint[pEndPointInfo->cAddresses];
IntPtr ppSOCKADDRs = pEndPointInfo->ArrayOfSOCKADDRIN6Pointers;
for (UInt32 j = 0; j < pEndPointInfo->cAddresses; j++)
{
IntPtr pSOCKADDR = Marshal.ReadIntPtr(ppSOCKADDRs);
byte[] AddressFamilyBuffer = new byte[2];
Marshal.Copy(pSOCKADDR, AddressFamilyBuffer, 0, 2);
int addressFamily = 0;
#if BIGENDIAN
addressFamily = AddressFamilyBuffer[1] + ((int)AddressFamilyBuffer[0] << 8);
#else
addressFamily = AddressFamilyBuffer[0] + ((int)AddressFamilyBuffer[1] << 8);
#endif
byte[] buffer = new byte[((AddressFamily)addressFamily == AddressFamily.InterNetwork) ? SystemNetHelpers.IPv4AddressSize : SystemNetHelpers.IPv6AddressSize];
Marshal.Copy(pSOCKADDR, buffer, 0, buffer.Length);
IPEndPoint ipe = SystemNetHelpers.IPEndPointFromSOCKADDRBuffer(buffer);
record.EndPointCollection.Add(ipe);
ppSOCKADDRs = (IntPtr)((long)ppSOCKADDRs + Marshal.SizeOf(typeof(IntPtr)));
}
//----------------------------------
//Dump for trace
//----------------------------------
record.TracePeerNameRecord();
//----------------------------------
//Add to collection
//----------------------------------
PeerNameRecords.Add(record);
}
}
}
finally
{
shEndPointInfoArray.Dispose();
}
}
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "Sync Resolve returnig with PeerNameRecord count :{0}", PeerNameRecords.Count);
return(PeerNameRecords);
}
public PeerNameRecordCollection Resolve(PeerName peerName, int maxRecords)
{
return(Resolve(peerName, Cloud.Available, maxRecords));
}
public PeerNameRecordCollection Resolve(PeerName peerName, Cloud cloud)
{
return(Resolve(peerName, cloud, int.MaxValue));
}
public PeerNameRecordCollection Resolve(PeerName peerName)
{
return(Resolve(peerName, Cloud.Available, int.MaxValue));
}
/// <summary>
/// This constuctor popuates the PeerNameRecord and registers automatically
/// Registers in all clouds with automatic address selection
/// </summary>
/// <param name="name">PeerName to register</param>
/// <param name="port">Port to register on</param>
public PeerNameRegistration(PeerName name, int port) : this(name, port, null)
{
}
private void InternalRegister()
{
//------------------------------------------
//If we already registered, get out this place
//------------------------------------------
if (m_IsRegistered)
{
throw new PeerToPeerException(SR.GetString(SR.Pnrp_UseUpdateInsteadOfRegister));
}
//------------------------------------------
//Make sure you have the required info
//------------------------------------------
if (m_PeerNameRecord.PeerName == null)
{
throw new ArgumentNullException("PeerName");
}
//------------------------------------------
//If auto address selection is turned off
//then there must be atleast Data or Endpoints
//specified
//------------------------------------------
if (!m_UseAutoEndPointSelection)
{
if ((EndPointCollection.Count == 0) &&
(Data == null || Data.Length <= 0))
{
throw new PeerToPeerException(SR.GetString(SR.Pnrp_BlobOrEndpointListNeeded));
}
}
//-------------------------------------------------
//Demand for the Unrestricted Pnrp Permission
//-------------------------------------------------
PnrpPermission.UnrestrictedPnrpPermission.Demand();
//---------------------------------------------------------------
//No perf hit here, real native call happens only one time if it
//did not already happen
//---------------------------------------------------------------
UnsafeP2PNativeMethods.PnrpStartup();
//---------------------------------------------------------------
//Log trace info
//---------------------------------------------------------------
if (Logging.P2PTraceSource.Switch.ShouldTrace(TraceEventType.Information))
{
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "InternalRegister() is called with the following Info");
m_PeerNameRecord.TracePeerNameRecord();
}
PEER_PNRP_REGISTRATION_INFO regInfo = new PEER_PNRP_REGISTRATION_INFO();
GCHandle handle;
//-------------------------------------------------
//Set data
//-------------------------------------------------
if (m_PeerNameRecord.Data != null)
{
regInfo.payLoad.cbPayload = (UInt32)m_PeerNameRecord.Data.Length;
handle = GCHandle.Alloc(m_PeerNameRecord.Data, GCHandleType.Pinned);
regInfo.payLoad.pbPayload = handle.AddrOfPinnedObject(); //m_PeerNameRecord.Data;
}
else
{
handle = new GCHandle();
}
//-------------------------------------------------
//Set comment
//-------------------------------------------------
if (m_PeerNameRecord.Comment != null && m_PeerNameRecord.Comment.Length > 0)
{
regInfo.pwszComment = m_PeerNameRecord.Comment;
}
//-------------------------------------------------
//Set cloud name
//-------------------------------------------------
if (m_Cloud != null)
{
regInfo.pwszCloudName = m_Cloud.InternalName;
}
try
{
if (m_PeerNameRecord.EndPointCollection.Count == 0)
{
//-------------------------------------------------
//Set port only if the addresses are null
//and then set the selection to auto addresses
//-------------------------------------------------
regInfo.wport = (ushort)m_Port;
if (m_UseAutoEndPointSelection)
{
regInfo.cAddresses = PEER_PNRP_AUTO_ADDRESSES;
}
//-------------------------------------------------
//Call the native API to register
//-------------------------------------------------
int result = UnsafeP2PNativeMethods.PeerPnrpRegister(m_PeerNameRecord.PeerName.ToString(),
ref regInfo,
out m_RegistrationHandle);
if (result != 0)
{
throw PeerToPeerException.CreateFromHr(SR.GetString(SR.Pnrp_CouldNotRegisterPeerName), result);
}
}
else
{
//-------------------------------------------------
//Set the Endpoint List
//-------------------------------------------------
int numAddresses = m_PeerNameRecord.EndPointCollection.Count;
int cbRequriedBytes = numAddresses * Marshal.SizeOf(typeof(IntPtr));
IntPtr pSocketAddrList = Marshal.AllocHGlobal(cbRequriedBytes);
GCHandle[] GCHandles = new GCHandle[numAddresses];
try
{
unsafe
{
IntPtr *pAddress = (IntPtr *)pSocketAddrList;
for (int i = 0; i < m_PeerNameRecord.EndPointCollection.Count; i++)
{
byte[] sockaddr = SystemNetHelpers.SOCKADDRFromIPEndPoint(m_PeerNameRecord.EndPointCollection[i]);
GCHandles[i] = GCHandle.Alloc(sockaddr, GCHandleType.Pinned);
IntPtr psockAddr = GCHandles[i].AddrOfPinnedObject();
pAddress[i] = psockAddr;
}
}
regInfo.ArrayOfSOCKADDRIN6Pointers = pSocketAddrList;
regInfo.cAddresses = (UInt32)numAddresses;
int result = UnsafeP2PNativeMethods.PeerPnrpRegister(m_PeerNameRecord.PeerName.ToString(),
ref regInfo,
out m_RegistrationHandle);
if (result != 0)
{
throw PeerToPeerException.CreateFromHr(SR.GetString(SR.Pnrp_CouldNotRegisterPeerName), result);
}
}
finally
{
if (pSocketAddrList != IntPtr.Zero)
{
Marshal.FreeHGlobal(pSocketAddrList);
}
for (int i = 0; i < GCHandles.Length; i++)
{
if (GCHandles[i].IsAllocated)
{
GCHandles[i].Free();
}
}
}
}
}
finally
{
if (handle.IsAllocated)
{
handle.Free();
}
}
m_RegisteredPeerName = m_PeerNameRecord.PeerName;
m_IsRegistered = true;
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "Registration is successful. The handle is {0}", m_RegistrationHandle.DangerousGetHandle());
}