private void NotifyAllOnlineUsersAboutNewlyJoinedUser(string connecting_user)
{
// Inform all of the clients of the new message
List <string> callbackKeys = loggedInUsers?.Keys.ToList();
// Loops through each logged in user
foreach (string key in callbackKeys)
{
if (key != connecting_user)
{
try
{
IOneToOneChatCallback callback = loggedInUsers[key];
callback.SendNewConnectedUserNameToAllOnlineUsers(connecting_user);
Console.WriteLine($"Notifying user {key} about joining of {connecting_user}");
}
// catches an issue with a user disconnect and loggs off that user
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message, System.Reflection.MethodBase.GetCurrentMethod().DeclaringType.Namespace + "." + System.Reflection.MethodBase.GetCurrentMethod().DeclaringType.Name + "." + System.Reflection.MethodBase.GetCurrentMethod().Name);
// Remove the disconnected client
LeaveServer(key);
}
}
} // end of foreach
}
public bool AddMeToServer(string userName)
{
if (userName.Length > 15)
{
userName = userName.Substring(0, 15);
}
IOneToOneChatCallback callback = OperationContext.Current.GetCallbackChannel <IOneToOneChatCallback>();
if (!loggedInUsers.ContainsKey(userName))
{
loggedInUsers.Add(userName, callback);
Console.WriteLine($"User {userName} logged in...");
// Notify all the online users about newly joined user
NotifyAllOnlineUsersAboutNewlyJoinedUser(userName);
return(true);
} // end of if
else
{
DuplicateUserFault fault = new DuplicateUserFault()
{
Reason = "User '" + userName + "' already logged in!"
};
throw new FaultException <DuplicateUserFault>(fault);
} // end of else
}
} // end of method
private void SendMessageToParticularClient(SingleChatMessage chatmessage, string sender, string intendedReceiver)
{
// Inform all of the clients of the new message
List <string> callbackKeys = loggedInUsers?.Keys.ToList();
// Loops through each logged in user
foreach (string key in callbackKeys)
{
if (key == intendedReceiver || key == sender)
{
try
{
IOneToOneChatCallback callback = loggedInUsers[key];
callback.SendMessageToParticularClient(chatmessage);
Console.WriteLine($"Sending user {key} message {chatmessage}");
}
// catches an issue with a user disconnect and loggs off that user
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message, System.Reflection.MethodBase.GetCurrentMethod().DeclaringType.Namespace + "." + System.Reflection.MethodBase.GetCurrentMethod().DeclaringType.Name + "." + System.Reflection.MethodBase.GetCurrentMethod().Name);
// Remove the disconnected client
LeaveServer(key);
}
}
} // end of foreach
}
