// 自訂當Peer端點登入或登出時所呼叫的方法
private void PeerNearMeChangedCallback(Object sender, PeerNearMeChangedEventArgs e)
{
String str = "";
PeerNearMe pnm = e.PeerNearMe as PeerNearMe;
// 取得Peer端點的位置
PeerEndPointCollection pepc = pnm.PeerEndPoints;
foreach (PeerEndPoint pep in pepc)
{
// 回傳System.Net.IPEndPoint物件
IPEndPoint ipEndPoint = pep.EndPoint;
// 取得Peer端點的IP位址
str = str + ", " + ipEndPoint.Address.ToString() + ":";
// 取得Peer端點的通訊埠
str = str + ipEndPoint.Port.ToString();
}
// 取得PeerNearMe物件所發生的變更類型
switch (e.PeerChangeType)
{
// 當有新的Peer端點登入時
case PeerChangeType.Added:
lstPeer.Items.Add(str);
break;
// 當Peer端點登出時
case PeerChangeType.Deleted:
break;
// 當Peer端點因相關資訊更新時
case PeerChangeType.Updated:
lstPeer.Items.Add(str);
break;
default:
break;
}
}
public static PeerNearMeCollection GetPeersNearMe()
{
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "Entering GetPeersNearMeGetPeersNearMe.");
CollaborationHelperFunctions.Initialize();
PeerCollaborationPermission.UnrestrictedPeerCollaborationPermission.Demand();
PeerNearMeCollection pnmc = new PeerNearMeCollection();
SafeCollabEnum handlePeerEnum = null;
UInt32 pnmCount = 0;
int errorCode = 0;
try{
//
// Call native to get the enumeration of peers near
//
errorCode = UnsafeCollabNativeMethods.PeerCollabEnumPeopleNearMe(out handlePeerEnum);
if (errorCode != 0){
Logging.P2PTraceSource.TraceEvent(TraceEventType.Error, 0, "PeerCollabEnumPeopleNearMe returned with errorcode {0}", errorCode);
throw PeerToPeerException.CreateFromHr(SR.GetString(SR.Collab_GetPeersNearMeFailed), errorCode);
}
errorCode = UnsafeCollabNativeMethods.PeerGetItemCount(handlePeerEnum, ref pnmCount);
if (errorCode != 0){
Logging.P2PTraceSource.TraceEvent(TraceEventType.Error, 0, "PeerGetItemCount returned with errorcode {0}", errorCode);
throw PeerToPeerException.CreateFromHr(SR.GetString(SR.Collab_GetPeersNearMeFailed), errorCode);
}
if (pnmCount == 0){
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "No peers found. \nLeaving GetPeersNearMe()");
return pnmc;
}
unsafe{
SafeCollabData appArray;
errorCode = UnsafeCollabNativeMethods.PeerGetNextItem(handlePeerEnum, ref pnmCount, out appArray);
IntPtr pPEER_PEOPLE_NEAR_ME = appArray.DangerousGetHandle();
IntPtr* pPeersNearMe = (IntPtr*)pPEER_PEOPLE_NEAR_ME;
//
// Loops through individual native structures and makes peers from them
//
for (ulong i = 0; i < pnmCount; i++){
IntPtr pContactPtr = (IntPtr)pPeersNearMe[i];
PEER_PEOPLE_NEAR_ME pnm = (PEER_PEOPLE_NEAR_ME)Marshal.PtrToStructure(pContactPtr, typeof(PEER_PEOPLE_NEAR_ME));
PeerNearMe peerNearMe = new PeerNearMe();
peerNearMe.Id = CollaborationHelperFunctions.ConvertGUIDToGuid(pnm.id);
peerNearMe.Nickname = Marshal.PtrToStringUni(pnm.pwzNickname); ;
PEER_ENDPOINT pe = pnm.endpoint;
peerNearMe.PeerEndPoints.Add(CollaborationHelperFunctions.ConvertPEER_ENDPOINTToPeerEndPoint(pe));
pnmc.Add(peerNearMe);
}
}
}
finally{
if (handlePeerEnum != null) handlePeerEnum.Dispose();
}
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "Leaving GetPeersNearMeGetPeersNearMe with {0} peers.", pnmc.Count);
return pnmc;
}
internal static PeerNearMe PEER_PEOPLE_NEAR_METoPeerNearMe(PEER_PEOPLE_NEAR_ME ppnm)
{
PeerNearMe peerNearMe = new PeerNearMe();
peerNearMe.Id = CollaborationHelperFunctions.ConvertGUIDToGuid(ppnm.id);
peerNearMe.Nickname = Marshal.PtrToStringUni(ppnm.pwzNickname); ;
PEER_ENDPOINT pe = ppnm.endpoint;
PeerEndPoint peerEP = ConvertPEER_ENDPOINTToPeerEndPoint(pe);
peerNearMe.PeerEndPoints.Add(peerEP);
return peerNearMe;
}
void AddLog(PeerNearMe peerNearMe, PeerObject peerObject)
{
AddLog(peerNearMe.Nickname, peerObject);
}
public void CreateContactAsync(PeerNearMe peerNearMe, Object userToken)
{
if (m_Disposed) throw new ObjectDisposedException(this.GetType().FullName);
PeerCollaborationPermission.UnrestrictedPeerCollaborationPermission.Demand();
if (peerNearMe == null)
throw new ArgumentNullException("PeerNearMe");
if ((peerNearMe.PeerEndPoints == null) || (peerNearMe.PeerEndPoints.Count == 0) || (peerNearMe.PeerEndPoints[0].EndPoint == null))
throw new PeerToPeerException(SR.GetString(SR.Collab_NoEndpointFound));
if (Logging.P2PTraceSource.Switch.ShouldTrace(TraceEventType.Information)){
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "Entering CreateContactAsync() with token {0} and following peernearme" , userToken);
peerNearMe.TracePeerNearMe();
}
//
// Add to list of usertokens
//
lock (CreateContactAsyncListLock){
if (m_createContactAsyncList.ContainsKey(userToken)){
throw new ArgumentException(SR.GetString(SR.DuplicateUserToken));
}
AsyncOperation asyncOp = AsyncOperationManager.CreateOperation(userToken);
m_createContactAsyncList[userToken] = asyncOp;
}
ThreadPool.QueueUserWorkItem(new WaitCallback(CreateContactAsyncHelper), new CreateContactAsyncState(peerNearMe, userToken));
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "Leaving CreateContactAsync().");
}
internal CreateContactAsyncState(PeerNearMe peerNearMe, Object userToken){
m_peerNearMe = peerNearMe;
m_userToken = userToken;
}
public PeerContact CreateContact(PeerNearMe peerNearMe)
{
if (m_Disposed) throw new ObjectDisposedException(this.GetType().FullName);
PeerCollaborationPermission.UnrestrictedPeerCollaborationPermission.Demand();
if (peerNearMe == null)
throw new ArgumentNullException("peerNearMe");
if ((peerNearMe.PeerEndPoints == null) || (peerNearMe.PeerEndPoints.Count == 0) || (peerNearMe.PeerEndPoints[0].EndPoint == null))
throw new PeerToPeerException(SR.GetString(SR.Collab_NoEndpointFound));
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "Entering CreateContact() with peernearme", peerNearMe.ToString());
PeerEndPoint peerEndPoint = peerNearMe.PeerEndPoints[0];
PEER_ENDPOINT pe = new PEER_ENDPOINT();
pe.peerAddress = CollaborationHelperFunctions.ConvertIPEndpointToPEER_ADDRESS(peerEndPoint.EndPoint);
//
// Pin all the data to pass to native
//
GCHandle pepName = new GCHandle();
if (peerEndPoint.Name != null){
pepName = GCHandle.Alloc(peerEndPoint.Name, GCHandleType.Pinned);
pe.pwzEndpointName = pepName.AddrOfPinnedObject();
}
GCHandle peerEP = GCHandle.Alloc(pe, GCHandleType.Pinned);
IntPtr ptrPeerEP = peerEP.AddrOfPinnedObject();
string contactData = null;
int errorCode = 0;
//
// Refresh end point data if it not subscribed
//
peerNearMe.RefreshData();
errorCode = UnsafeCollabNativeMethods.PeerCollabQueryContactData(ptrPeerEP, ref contactData);
if (errorCode != 0){
Logging.P2PTraceSource.TraceEvent(TraceEventType.Error, 0, "PeerCollabGetContact returned with errorcode {0}", errorCode);
throw PeerToPeerException.CreateFromHr(SR.GetString(SR.Collab_CreateContactFailed), errorCode);
}
SafeCollabData contact = null;
PeerContact peerContact = null;
try{
errorCode = UnsafeCollabNativeMethods.PeerCollabParseContact(contactData, out contact);
if (errorCode != 0){
Logging.P2PTraceSource.TraceEvent(TraceEventType.Error, 0, "PeerCollabGetContact returned with errorcode {0}", errorCode);
throw PeerToPeerException.CreateFromHr(SR.GetString(SR.Collab_CreateContactFailed), errorCode);
}
PEER_CONTACT pc = (PEER_CONTACT)Marshal.PtrToStructure(contact.DangerousGetHandle(), typeof(PEER_CONTACT));
peerContact = CollaborationHelperFunctions.ConvertPEER_CONTACTToPeerContact(pc);
//
// Mark it as just created and add the xml. This is used when adding the contact or getting
// contact xml when contact is not added
//
peerContact.JustCreated = true;
peerContact.ContactXml = contactData;
}
finally{
if (contact != null) contact.Dispose();
pepName.Free();
peerEP.Free();
}
Logging.P2PTraceSource.TraceEvent(TraceEventType.Information, 0, "Leaving CreateContact().");
return peerContact;
}
void AddLog(PeerNearMe peerNearMe, PeerObject peerObject)
{
AddLog(peerNearMe.Nickname, peerObject);
}
