internal void StartAsyncResolve()
{
//------------------------------------------
//Check for disposal
//------------------------------------------
if (m_Disposed)
{
throw new ObjectDisposedException(this.GetType().FullName);
}
//------------------------------------------
//First wire up a callback
//------------------------------------------
m_RegisteredWaitHandle = ThreadPool.RegisterWaitForSingleObject(m_EndPointInfoAvailableEvent, //Event that triggers the callback
new WaitOrTimerCallback(EndPointInfoAvailableCallback), //callback to be called
null, //state to be passed
-1, //Timeout - aplicable only for timers not for events
false //call us everytime the event is set not just one time
);
//------------------------------------------
//Now call the native API to start the resolution
//process save the handle for later
//------------------------------------------
Int32 result = UnsafeP2PNativeMethods.PeerPnrpStartResolve(m_PeerName.ToString(),
m_Cloud.InternalName,
(UInt32)m_MaxRecords,
m_EndPointInfoAvailableEvent.SafeWaitHandle,
out m_SafePeerNameEndResolve);
if (result != 0)
{
if (!m_SafePeerNameEndResolve.IsInvalid && !m_SafePeerNameEndResolve.IsClosed)
{
m_SafePeerNameEndResolve.Dispose();
}
m_RegisteredWaitHandle.Unregister(null);
m_RegisteredWaitHandle = null;
PeerToPeerException ex = PeerToPeerException.CreateFromHr(SR.GetString(SR.Pnrp_CouldNotStartNameResolution), result);
Logging.P2PTraceSource.TraceEvent(TraceEventType.Error, m_TraceEventId,
"Exception occurred while starting async resolve");
throw ex;
}
//------------------------------------------
//Create an async operation with the given
//user state
//------------------------------------------
m_AsyncOp = AsyncOperationManager.CreateOperation(m_userState);
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, m_TraceEventId,
"Successfully started the async resolve. The native handle is {0}", m_SafePeerNameEndResolve.DangerousGetHandle());
}
internal static PeerToPeerException CreateFromHr(string message, Int32 hr)
{
PeerToPeerException p2pEx = null;
int facility = ((hr >> 16) & 0x1FFF);
IntPtr NativeMessagePtr = IntPtr.Zero;
try
{
UInt32 dwLength = UnsafeSystemNativeMethods.FormatMessage(
FormatMessageFlags.FORMAT_MESSAGE_ALLOCATE_BUFFER |
FormatMessageFlags.FORMAT_MESSAGE_ARGUMENT_ARRAY |
(facility == FACILITY_P2P ? FormatMessageFlags.FORMAT_MESSAGE_FROM_HMODULE : FormatMessageFlags.FORMAT_MESSAGE_FROM_SYSTEM),
(facility == FACILITY_P2P ? PeerToPeerOSHelper.P2PModuleHandle : IntPtr.Zero),
(uint)(hr),
0,
ref NativeMessagePtr,
0,
IntPtr.Zero);
if (dwLength != 0)
{
string NativeMessage = Marshal.PtrToStringUni(NativeMessagePtr);
p2pEx = new PeerToPeerException(message, new Win32Exception(hr, NativeMessage));
}
else
{
p2pEx = new PeerToPeerException(message, Marshal.GetExceptionForHR(hr));
}
}
catch (Exception ex)
{
Logging.P2PTraceSource.TraceEvent(TraceEventType.Warning, 0, "Could not get the error message for error code {0} - Exception {1}", hr, ex);
if (ex is ThreadAbortException || ex is StackOverflowException || ex is OutOfMemoryException)
{
throw;
}
}
finally
{
if (NativeMessagePtr != IntPtr.Zero)
{
UnsafeSystemNativeMethods.LocalFree(NativeMessagePtr);
}
}
if (p2pEx == null)
{
Logging.P2PTraceSource.TraceEvent(TraceEventType.Warning, 0, "Could not get the error message for error code {0}", hr);
p2pEx = new PeerToPeerException(message + "Underlying native error " + hr);
}
Logging.P2PTraceSource.TraceEvent(TraceEventType.Error, 0, "Exception: {0}", p2pEx);
return(p2pEx);
}
public static PeerName CreateFromPeerHostName(string peerHostName)
{
//-------------------------------------------------
//Check arguments
//-------------------------------------------------
if (peerHostName == null)
{
throw new ArgumentNullException("peerHostName");
}
if (peerHostName.Length == 0)
{
throw new ArgumentException(SR.GetString(SR.Pnrp_InvalidPeerHostName), "peerHostName");
}
Int32 result;
SafePeerData shPeerName = null;
string peerName = null;
try
{
result = UnsafeP2PNativeMethods.PeerHostNameToPeerName(peerHostName, out shPeerName);
if (result != 0)
{
throw PeerToPeerException.CreateFromHr(SR.GetString(SR.Pnrp_CouldNotGetPeerNameFromPeerHostName), result);
}
peerName = shPeerName.UnicodeString;
}
finally
{
if (shPeerName != null)
{
shPeerName.Dispose();
}
}
string authority;
string classifier;
WeakParsePeerName(peerName, out authority, out classifier);
PeerName p = new PeerName(peerName, authority, classifier);
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "PeerName created from PeerHostName - PeerHostName {0} to PeerName PeerName {1} Authority {2} Classfier {3}", peerHostName, peerName, authority, classifier);
return(p);
}
internal static PeerToPeerException CreateFromHr(string message, Int32 hr)
{
PeerToPeerException p2pEx = null;
int facility = ((hr >> 16) & 0x1FFF);
IntPtr NativeMessagePtr = IntPtr.Zero;
try
{
UInt32 dwLength = UnsafeSystemNativeMethods.FormatMessage(
FormatMessageFlags.FORMAT_MESSAGE_ALLOCATE_BUFFER |
FormatMessageFlags.FORMAT_MESSAGE_ARGUMENT_ARRAY |
(facility == FACILITY_P2P ? FormatMessageFlags.FORMAT_MESSAGE_FROM_HMODULE : FormatMessageFlags.FORMAT_MESSAGE_FROM_SYSTEM),
(facility == FACILITY_P2P ? PeerToPeerOSHelper.P2PModuleHandle : IntPtr.Zero),
(uint)(hr),
0,
ref NativeMessagePtr,
0,
IntPtr.Zero);
if (dwLength != 0)
{
string NativeMessage = Marshal.PtrToStringUni(NativeMessagePtr);
p2pEx = new PeerToPeerException(message, new Win32Exception(hr, NativeMessage));
}
else
{
p2pEx = new PeerToPeerException(message, Marshal.GetExceptionForHR(hr));
}
}
catch(Exception ex)
{
Logging.P2PTraceSource.TraceEvent(TraceEventType.Warning, 0, "Could not get the error message for error code {0} - Exception {1}", hr, ex);
if (ex is ThreadAbortException || ex is StackOverflowException || ex is OutOfMemoryException)
{
throw;
}
}
finally
{
if (NativeMessagePtr != IntPtr.Zero)
{
UnsafeSystemNativeMethods.LocalFree(NativeMessagePtr);
}
}
if (p2pEx == null)
{
Logging.P2PTraceSource.TraceEvent(TraceEventType.Warning, 0, "Could not get the error message for error code {0}", hr);
p2pEx = new PeerToPeerException(message + "Underlying native error " + hr);
}
Logging.P2PTraceSource.TraceEvent(TraceEventType.Error, 0, "Exception: {0}", p2pEx);
return p2pEx;
}
public static PeerName CreateRelativePeerName(
PeerName peerName,
string classifier)
{
//-------------------------------------------------
//Check arguments
//-------------------------------------------------
if (peerName == null)
{
throw new ArgumentNullException("peerName", SR.GetString(SR.Pnrp_PeerNameCantBeNull));
}
if (!peerName.IsSecured && (classifier == null || classifier.Length == 0))
{
throw new ArgumentException(SR.GetString(SR.Pnrp_InvalidClassifier), "classifier");
}
if (classifier != null && classifier.Length > PEER_MAX_CLASSIFIER_LENGTH)
{
throw new ArgumentException(SR.GetString(SR.Pnrp_InvalidClassifier), "classifier");
}
//--------------------------------------------------
//Normalize using NFC
//--------------------------------------------------
if (classifier != null && classifier.Length > 0)
{
classifier = classifier.Normalize(NormalizationForm.FormC);
}
Int32 result;
SafePeerData shNewPeerName = null;
string newPeerName = null;
try
{
//Here there is change made on the native side
//when passing secured peer names, it takes string of the form [40hexdigits].claasisifer and a newclassifier
//returns [40hexdigits.newclassifier]
//But for unsecured peer names it does not take 0.clasfier and newclassfier to return 0.newclassfier.
//It expects NULL as the first param. To satisfy this broken finctionality, we are passing null if the
//peer name is unsecured.
result = UnsafeP2PNativeMethods.PeerCreatePeerName(peerName.IsSecured? peerName.m_PeerName : null, classifier, out shNewPeerName);
if (result != 0)
{
throw PeerToPeerException.CreateFromHr(SR.GetString(SR.Pnrp_CouldNotCreateRelativePeerName), result);
}
newPeerName = shNewPeerName.UnicodeString;
}
finally
{
if (shNewPeerName != null)
{
shNewPeerName.Dispose();
}
}
string authority;
string newClassifier;
WeakParsePeerName(newPeerName, out authority, out newClassifier);
PeerName p = new PeerName(newPeerName, authority, newClassifier);
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "A new PeerName created from existing PeerName with a new classfier. Existing PeerName {0} Classifier {1} New PeerName {2}", peerName, classifier, p);
return(p);
}
public PeerName(string classifier, PeerNameType peerNameType)
{
//-------------------------------------------------
//Check arguments
//-------------------------------------------------
if ((classifier == null || classifier.Length == 0) &&
peerNameType == PeerNameType.Unsecured)
{
throw new ArgumentNullException("classifier");
}
if (classifier != null && classifier.Length > PEER_MAX_CLASSIFIER_LENGTH)
{
throw new ArgumentException(SR.GetString(SR.Pnrp_InvalidClassifier), "classifier");
}
//--------------------------------------------------
//Normalize using NFC
//--------------------------------------------------
if (classifier != null && classifier.Length > 0)
{
classifier = classifier.Normalize(NormalizationForm.FormC);
}
//-------------------------------------------------
//call the helper to create the PeerName
//-------------------------------------------------
Int32 result;
SafePeerData shNewPeerName = null;
SafePeerData shDefaultIdentity = null;
try
{
if (peerNameType == PeerNameType.Unsecured)
{
result = UnsafeP2PNativeMethods.PeerCreatePeerName((string)null, classifier, out shNewPeerName);
if (result != 0)
{
throw PeerToPeerException.CreateFromHr(SR.GetString(SR.Pnrp_CouldNotCreateUnsecuredPeerName), result);
}
m_Authority = PEERNAME_UNSECURED_AUTHORITY;
}
else
{
result = UnsafeP2PNativeMethods.PeerIdentityGetDefault(out shDefaultIdentity);
if (result != 0)
{
throw PeerToPeerException.CreateFromHr(SR.GetString(SR.Pnrp_CouldNotGetDefaultIdentity), result);
}
m_Authority = shDefaultIdentity.UnicodeString;
//}
result = UnsafeP2PNativeMethods.PeerCreatePeerName(m_Authority, classifier, out shNewPeerName);
if (result != 0)
{
throw PeerToPeerException.CreateFromHr(SR.GetString(SR.Pnrp_CouldNotCreateSecuredPeerName), result);
}
}
m_PeerName = shNewPeerName.UnicodeString;
m_Classifier = classifier;
}
finally
{
if (shNewPeerName != null)
{
shNewPeerName.Dispose();
}
if (shDefaultIdentity != null)
{
shDefaultIdentity.Dispose();
}
}
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "PeerName instance created - PeerName {0} Authority {1} Classfier {2}", m_PeerName, m_Authority, m_Classifier);
}
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 void EndPointInfoAvailableCallback(object state, bool timedOut)
{
//------------------------------------------
//This callback is called whenever there is an endpoint info
//available or the resultion is completed
//------------------------------------------
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, m_TraceEventId,
"EndPointInfoAvailableCallback called");
PeerNameRecord record = null;
SafePeerData shEndPointInfo;
Int32 result = 0;
PeerNameResolver parent = null;
if (m_Cancelled)
{
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, m_TraceEventId,
"Detected that the async operation is already canceled - before entering the lock");
return;
}
lock (m_Lock)
{
if (m_Cancelled)
{
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, m_TraceEventId,
"Detected that the async operation is already canceled - after entering the lock");
return;
}
result = UnsafeP2PNativeMethods.PeerPnrpGetEndpoint(m_SafePeerNameEndResolve.DangerousGetHandle(), out shEndPointInfo);
if (result != 0)
{
if (result == PEER_E_NO_MORE)
{
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, m_TraceEventId,
"Native API returned that there are no more records - resolve completed successfully");
}
m_CompletedOrException = true;
m_SafePeerNameEndResolve.Dispose();
}
else
{
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, m_TraceEventId,
"Proceeding to retrieve the endpoint information from incremental resolve");
try
{
unsafe
{
PEER_PNRP_ENDPOINT_INFO *pEndPointInfo = (PEER_PNRP_ENDPOINT_INFO *)shEndPointInfo.DangerousGetHandle();
record = new PeerNameRecord();
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)));
}
}
}
finally
{
shEndPointInfo.Dispose();
}
record.TracePeerNameRecord();
m_PeerNameRecordCollection.Add(record);
ResolveProgressChangedEventArgs resolveProgressChangedEventArgs = new ResolveProgressChangedEventArgs(
record, m_AsyncOp.UserSuppliedState);
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, m_TraceEventId,
"Proceeding to call progress changed event callback");
parent = m_PeerNameResolverWeakReference.Target as PeerNameResolver;
if (parent != null)
{
parent.PrepareToRaiseProgressChangedEvent(m_AsyncOp, resolveProgressChangedEventArgs);
}
return;
}
}
ResolveCompletedEventArgs resolveCompletedEventArgs;
if (result == PEER_E_NO_MORE)
{
resolveCompletedEventArgs = new ResolveCompletedEventArgs(m_PeerNameRecordCollection,
null, false, m_AsyncOp.UserSuppliedState);
}
else
{
PeerToPeerException ex = PeerToPeerException.CreateFromHr(SR.GetString(SR.Pnrp_ExceptionWhileResolvingAPeerName), result);
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, m_TraceEventId,
"Exception occurred when the native API is called to harvest an incremental resolve notification");
resolveCompletedEventArgs = new ResolveCompletedEventArgs(null,
ex, false, m_AsyncOp.UserSuppliedState);
}
parent = m_PeerNameResolverWeakReference.Target as PeerNameResolver;
if (parent != null)
{
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, m_TraceEventId,
"Proceeding to call the ResolveCompleted callback");
parent.PrepareToRaiseCompletedEvent(m_AsyncOp, resolveCompletedEventArgs);
}
return;
}
public void Update()
{
//-------------------------------------------------
//Check for the dead object
//-------------------------------------------------
if (m_Disposed)
{
throw new ObjectDisposedException(this.GetType().FullName);
}
//-------------------------------------------------
//If there is no existing registration to update
//get out
//-------------------------------------------------
if (!IsRegistered())
{
throw new InvalidOperationException(SR.GetString(SR.Pnrp_CallRegisterBeforeUpdate));
}
//-------------------------------------------------
//Check for parameters
//-------------------------------------------------
if (m_PeerNameRecord.PeerName == null)
{
throw new ArgumentNullException(SR.GetString(SR.Pnrp_InvalidPeerName));
}
//-------------------------------------------------
//If the current PeerName associated with the
//current registration is not the same as the
//PeerName given now - throw
//-------------------------------------------------
if (!m_RegisteredPeerName.Equals(m_PeerNameRecord.PeerName))
{
throw new InvalidOperationException(SR.GetString(SR.Pnrp_CantChangePeerNameAfterRegistration));
}
//------------------------------------------
//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();
//---------------------------------------------------------------
//Log trace info
//---------------------------------------------------------------
if (Logging.P2PTraceSource.Switch.ShouldTrace(TraceEventType.Information))
{
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "Update() is called with the following Info");
m_PeerNameRecord.TracePeerNameRecord();
}
PEER_PNRP_REGISTRATION_INFO regInfo = new PEER_PNRP_REGISTRATION_INFO();
//-------------------------------------------------
//Set data
//-------------------------------------------------
if (m_PeerNameRecord.Data != null)
{
regInfo.payLoad.cbPayload = (UInt32)m_PeerNameRecord.Data.Length;
//Marshal.All
//regInfo.payLoad.pbPayload = m_PeerNameRecord.Data;
GCHandle handle = GCHandle.Alloc(m_PeerNameRecord.Data, GCHandleType.Pinned);
regInfo.payLoad.pbPayload = handle.AddrOfPinnedObject(); //m_PeerNameRecord.Data;
handle.Free();
}
;
//-------------------------------------------------
//Set comment
//-------------------------------------------------
if (m_PeerNameRecord.Comment != null && m_PeerNameRecord.Comment.Length > 0)
{
regInfo.pwszComment = m_PeerNameRecord.Comment;
}
//-------------------------------------------------
//Set cloud name
//-------------------------------------------------
regInfo.pwszCloudName = null;
if (m_Cloud != null)
{
regInfo.pwszCloudName = m_Cloud.InternalName;
}
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;
regInfo.cAddresses = PEER_PNRP_AUTO_ADDRESSES;
int result = UnsafeP2PNativeMethods.PeerPnrpUpdateRegistration(m_RegistrationHandle, ref regInfo);
if (result != 0)
{
throw PeerToPeerException.CreateFromHr(SR.GetString(SR.Pnrp_CouldNotRegisterPeerName), result);
}
return;
}
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.PeerPnrpUpdateRegistration(m_RegistrationHandle, ref regInfo);
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();
}
}
}
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "Update of existing registration is successful. The handle is {0}", m_RegistrationHandle.DangerousGetHandle());
}
}
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());
}
private static void GetCloudOrClouds(string cloudName, bool bGlobalCloudOnly, out CloudCollection clouds, out Cloud cloud)
{
cloud = null;
clouds = null;
Logging.Enter(Logging.P2PTraceSource, "Cloud::GetCloudOrClouds()");
//-------------------------------------------------
//Demand for the Unrestricted Pnrp Permission
//-------------------------------------------------
PnrpPermission.UnrestrictedPnrpPermission.Demand();
Int32 result = 0;
UInt32 numClouds = 0;
SafePeerData ArrayOfCloudInfoStructures = null;
if (cloudName == null)
{
//-----------------------------------------
//We need the collection only when we are not
//getting a specific cloud
//-----------------------------------------
clouds = new CloudCollection();
}
try
{
//---------------------------------------------------------------
//No perf hit here, real native call happens only one time if it
//did not already happen
//---------------------------------------------------------------
UnsafeP2PNativeMethods.PnrpStartup();
result = UnsafeP2PNativeMethods.PeerPnrpGetCloudInfo(out numClouds, out ArrayOfCloudInfoStructures);
if (result != 0)
{
throw PeerToPeerException.CreateFromHr(SR.GetString(SR.Pnrp_CouldNotEnumerateClouds), result);
}
if (numClouds != 0)
{
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "Number of clouds returned {0}", numClouds);
IntPtr pPEER_PNRP_CLOUD_INFO = ArrayOfCloudInfoStructures.DangerousGetHandle();
for (ulong i = 0; i < numClouds; i++)
{
PEER_PNRP_CLOUD_INFO cloudinfo = (PEER_PNRP_CLOUD_INFO)Marshal.PtrToStructure(pPEER_PNRP_CLOUD_INFO, typeof(PEER_PNRP_CLOUD_INFO));
string nativeCloudName = Marshal.PtrToStringUni(cloudinfo.pwzCloudName);
pPEER_PNRP_CLOUD_INFO = (IntPtr)((long)pPEER_PNRP_CLOUD_INFO + Marshal.SizeOf(typeof(PEER_PNRP_CLOUD_INFO)));
Cloud c = new Cloud(nativeCloudName, (PnrpScope)((int)cloudinfo.dwScope), (int)cloudinfo.dwScopeId);
if (cloudName == null && !bGlobalCloudOnly)
{
clouds.Add(c);
continue;
}
//If a specific cloud by name is required, then test for name
//note that scope is PnrpScope.All but we don't test that now
if (cloudName != null && cloudName == nativeCloudName)
{
cloud = c;
break;
}
if (bGlobalCloudOnly && c.Scope == PnrpScope.Global)
{
cloud = c;
break;
}
}
}
else
{
Logging.P2PTraceSource.TraceEvent(TraceEventType.Warning, 0, "No Clouds returned from the native call");
}
}
finally
{
if (ArrayOfCloudInfoStructures != null)
{
ArrayOfCloudInfoStructures.Dispose();
}
}
if (cloudName != null && cloud == null)
{
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "The specific cloud name {0} asked for is not found", cloudName);
}
Logging.Leave(Logging.P2PTraceSource, "Cloud::GetCloudOrClouds()");
}