I need SocketGuildUser and SocketGuildChannel when a message arrives. I don't see a straightforward way of getting these without downcasting.
private void downCast(SocketMessage msg)
{
SocketUser user = msg.Author;
ISocketMessageChannel channel = msg.Channel;
var gUser = (SocketGuildUser)user;
var Channel = (SocketGuildChannel) channel;
}
Not sure under what circumstances the downcast will fail...
This all leaves me really scratching my head. Why is there no link between a SocketMessage and a SocketGuild? There isn't even a field for the Guild's ID to enable a subsequent call to DiscordSocketClient.GetGuild(uint64 ID).
Related
I'm writing a web api using PostgreSQL and am checking database constraints as part of the validation process, but I also have a global exception filter as a fallback in case something gets by when saving. My problem is that the exception doesn't seem to have any message that I can present to the client without some processing. The added image is of the PostgresException data from a breakpoint. For example, in this case I would want something along the lines of "Asset Number x already exists" or just "Asset Number must be unique". Is this something that can be configured somewhere? The place that makes the most sense is at the constraint creation code, but I couldn't find an option to do so.
modelBuilder.Entity<AssetItem>().HasIndex(item => new { item.AssetNumber }).IsUnique();
public class DbExceptionFilter : IExceptionFilter
{
private const string UNIQUE_EXCEPTION = "23505";
public async void OnException(ExceptionContext context)
{
var exceptionType = context.Exception.InnerException.GetType().FullName;
if (exceptionType == "Npgsql.PostgresException")
{
var pgException = (PostgresException) context.Exception.InnerException;
switch(pgException.SqlState)
{
case UNIQUE_EXCEPTION:
var error = new {error = "Unique Error Here"};
await WriteJsonErrorResponse(context.HttpContext.Response, HttpStatusCode.BadRequest, error);
return;
}
}
else
{
var error = new { error = "Unexpected Server Error"};
await WriteJsonErrorResponse(context.HttpContext.Response, HttpStatusCode.InternalServerError, error);
return;
}
}
private async Task WriteJsonErrorResponse(HttpResponse response, HttpStatusCode statusCode, dynamic error)
{
response.ContentType = "application/json";
response.StatusCode = (int) statusCode;
await response.Body.WriteAsync(Encoding.ASCII.GetBytes(JsonConvert.SerializeObject(error)));
}
}
The closest thing to a user-readable message that PostgreSQL provides is the message text exposed on PostgresException.
However, as a general rule it is not a good idea to expose database errors directly to users (including web API users): these are intended to the application directly interacting with the database (i.e. your application). These messages generally don't mean much to the users of your API, and more importantly they leak potentially sensitive information about your database schema and are therefore not secure. It's especially problematic to dump/serialize the entire exception to the user as you seem to be doing (with JsonConvert.SerializeObject).
The best practice here would be to identify legitimate database exceptions that the user may trigger, intercept these and return and appropriately-worded message of your own (e.g. "A user with that name already exists").
As a side note, to identify PostgresException, rather than getting the name of the exception and comparing to that, you can simply use C# pattern matching:
if (context.Exception.InnerException is PostgresException postgresException)
{
// ...
}
I wrote a project with Xamarin Forms. When every user has signed up, I send him/her an activation Code to confirm it and the user has to insert it to enter the app. But I am looking for a plugin or a way that the user does not need to insert the activation Code.
I want the activation Code to be read automatically without the need to enter it manually.
First add the required permissions in AndroidManifest:
<uses-permission android:name="android.permission.RECEIVE_SMS" />
<uses-permission android:name="android.permission.READ_SMS" />
Here is SmsReceiver class in Android project:
using System.Linq;
using System.Text.RegularExpressions;
using Android.App;
using Android.Content;
using Android.Runtime;
using Android.Telephony;
using Java.Lang;
using Xamarin.Forms;
namespace MyProject.Android
{
[BroadcastReceiver(Enabled = true, Label = "SMS Receiver")]
[IntentFilter(new string[] { "android.provider.Telephony.SMS_RECEIVED", Intent.CategoryDefault })]
public class SmsReceiver : BroadcastReceiver
{
private const string IntentAction = "android.provider.Telephony.SMS_RECEIVED";
private static readonly string Sender = "SMS Sender number here";
private static readonly string[] OtpMessageBodyKeywordSet = {"Keyword1", "Keyword2"}; //You must define your own Keywords
public override void OnReceive(Context context, Intent intent)
{
try
{
if (intent.Action != IntentAction) return;
var bundle = intent.Extras;
if (bundle == null) return;
var pdus = bundle.Get("pdus");
// var castedPdus = JNIEnv.GetArray(pdus.Handle);
var castedPdus = JNIEnv.GetArray<Object>(pdus.Handle);
var msgs = new SmsMessage[castedPdus.Length];
var sb = new StringBuilder();
string sender = null;
for (var i = 0; i < msgs.Length; i++)
{
var bytes = new byte[JNIEnv.GetArrayLength(castedPdus[i].Handle)];
JNIEnv.CopyArray(castedPdus[i].Handle, bytes);
string format = bundle.GetString("format");
msgs[i] = SmsMessage.CreateFromPdu(bytes, format);
if (sender == null)
sender = msgs[i].OriginatingAddress;
sb.Append(string.Format("SMS From: {0}{1}Body: {2}{1}", msgs[i].OriginatingAddress,
System.Environment.NewLine, msgs[i].MessageBody));
//Toast.MakeText(context, sb.ToString(), ToastLength.Long).Show();
//Log.Error("Vahid", sb.ToString());
var msgBody = msgs[i].MessageBody;
if(!sender.Contains(Sender)) return;
bool foundKeyword = OtpMessageBodyKeywordSet.Any(k => msgBody.Contains(k));
if (!foundKeyword) return;
var code = ExtractNumber(msgBody);
MessagingCenter.Send<RegisterSecondPageModel, string>(new RegisterSecondPageModel(), "OtpReceived", code);
}
}
catch (System.Exception ex)
{
//Toast.MakeText(context, ex.Message, ToastLength.Long).Show();
}
}
private static string ExtractNumber(string text)
{
if (string.IsNullOrEmpty(text)) return "";
var regPattern = #"\d+";
var number = Regex.Match(text, regPattern).Value;
return number;
}
}
}
Note: In order to filter out the coming SMSes and detect only our own SMS we can apply these two filters:
1- Ignoring all SMSes that their sender numbers are not our SMS sender number.
2- Sometimes our SMS sender might send different SMSes to our clients, for example one SMS to send an activation code, and another to inform and confirm user's successfully registration in system. That said, we gotta distinguish them. For that we can search message body in order to find some pre-defined keywords. Of course our SMS server has to stick to a defined body format. "Activation", "Code", "Activation code" could be some example keywords in English language. Of course keywords should be defined in each language accordingly.
Here is RegisterSecondPageModel inside PCL project:
public class RegisterSecondPageModel
{
public RegisterSecondPageModel()
{
SubscribeToOtpReceiving();
}
private void SubscribeToOtpReceiving()
{
MessagingCenter.Subscribe<RegisterSecondPageModel, string>(this, "OtpReceived", (sender, code) =>
{
ActivationCode = code;
});
}
}
Another note is that as Jason already said, iOS doesn't allow apps to read SMSes.
If you're already sure about your clients having a SIM card in their device, then you can create a token and authenticate backwards, sending an SMS containing your token to from clients' device to your number.
Pros:
No blocked numbers: Sending messages from client is not blocked even if you're on their blacklist or they're blocking advertisements and unknown senders.
No costs on your side for authentication.
This works also in iOS which you can't read but can send messages.
Cons:
Client may be using another number in another device. This can be overcome by creating easy-to-type tokens which expire fast enough not to attract brute force attacks.
Client may not be able to send an SMS to your number due to several reasons including but not limited to not having enough account charge.
I have a lexer which puts every token the parser is interested in into the default channel and all comment-tokens in channel 1.
The default channel is used to create the actual tree while the comment channel is used to seperate the tokens and to store all comments.
Look at this scribble:
In chapter 12.1 p. 206-208 in The Definitive ANTLR4 Reference there is a comparable situation where comment tokens are shifted inside the token stream. The represented approach is to read out the comment-channel in an exit-method inside the parser.
In my opinion this is a very rough option for my problem, because i don't want to overwhelm my listener with that back-looking operations. Is there a possibility to override a method which puts tokens inside the comment-channel?
It looks like you misunderstand how channels work in ANTLR. What happens is that the lexer, as it comes along a token, assigns the default channel (just a number) during initialization of the token. That value is only changed when the lexer finds a -> channel() command or you change it explicitely in a lexer action. So there is nothing to do in a listener or whatever to filter out such tokens.
Later when you want to get all tokens "in" a given channel (i.e. all tokens that have a specific channel number assigned) you can just iterate over all tokens returned by your token stream and compare the channel value. Alternatively you can create a new CommonTokenStream instance and pass it the channel your are interested in. It will then only give you those tokens from that channel (it uses a token source, e.g. a lexer, to get the actual tokens and cache them).
I found out, that there is a easy way to override how tokens are created. To do this, one can override a method inside the CommonTokenFactory and give it to the Lexer. At this point i can check the channel and i am able to push the tokens in a separate set.
In my opinion this is a little bit hacky, but i do not need to iterate over the whole commonTokenStream later on.
This code is only to demonstrate the idea behind (in C#) .
internal class HeadAnalyzer
{
#region Methods
internal void AnalyzeHeader(Stream headerSourceStream)
{
var antlrFileStream =
new AntlrInputStream(headerSourceStream);
var mcrLexer = new MCRLexer(antlrFileStream);
var commentSaverTokenFactory = new MyTokenFactory();
mcrLexer.TokenFactory = commentSaverTokenFactory;
var commonTokenStream = new CommonTokenStream(mcrLexer);
var mcrParser = new MCRParser(commonTokenStream);
mcrParser.AddErrorListener(new DefaultErrorListener());
MCRParser.ProgramContext tree;
try
{
tree = mcrParser.program(); // create the tree
}
catch (SyntaxErrorException syntaxErrorException)
{
throw new NotImplementedException();
}
var headerContext = new HeaderContext();
var headListener = new HeadListener(headerContext);
ParseTreeWalker.Default.Walk(headListener, tree);
var comments = commentSaverTokenFactory.CommentTokens; // contains all comments :)
}
#endregion
}
internal class MyTokenFactory : CommonTokenFactory
{
internal readonly List<CommonToken> CommentTokens = new List<CommonToken>();
public override CommonToken Create(Tuple<ITokenSource, ICharStream> source, int type, string text, int channel, int start, int stop, int line, int charPositionInLine)
{
var token = base.Create(source, type, text, channel, start, stop, line, charPositionInLine);
if (token.Channel == 1)
{
CommentTokens.Add(token);
}
return token;
}
}
Maybe there are some better approaches. For my usecase it works as expected.
I want to get Call Details from Genesys Platform SIP Server.
And Genesys Platform has Platform SDK for .NET .
Anybod has a SIMPLE sample code which shows how to get call details using Platform SDK for .NET [ C# ] from SIP Server?
Extra Notes:
Call Details : especially i wanted to get AgentId for a given call
and
From Sip Server : I am not sure if Sip Server is the best candiate to
take call details. So open to other suggestions/ alternatives
You can build a class that monitor DN actions. Also you watch specific DN or all DN depending what you had to done. If its all about the call, this is the best way to this.
Firstly, you must define a TServerProtocol, then you must connect via host,port and client info.
var endpoint = new Endpoint(host, port, config);
//Endpoint backupEndpoint = new Endpoint("", 0, config);
protocol = new TServerProtocol(endpoint)
{
ClientName = clientName
};
//Sync. way;
protocol.Open();
//Async way;
protocol.BeginOpen();
I always use async way to do this. I got my reason thou :) You can detect when connection open with event that provided by SDK.
protocol.Opened += new EventHandler(OnProtocolOpened);
protocol.Closed += new EventHandler(OnProtocolClosed);
protocol.Received += new EventHandler(OnMessageReceived);
protocol.Error += new EventHandler(OnProtocolError);
Here there is OnMessageReceived event. This event where the magic happens. You can track all of your call events and DN actions. If you go genesys support site. You'll gonna find a SDK reference manual. On that manual quiet easy to understand there lot of information about references and usage.
So in your case, you want agentid for a call. So you need EventEstablished to do this. You can use this in your recieve event;
var message = ((MessageEventArgs)e).Message;
// your event-handling code goes here
switch (message.Id)
{
case EventEstablished.MessageId:
var eventEstablished = message as EventEstablished;
var AgentID = eventEstablished.AgentID;
break;
}
You can lot of this with this usage. Like dialing, holding on a call inbound or outbound even you can detect internal calls and reporting that genesys platform don't.
I hope this is clear enough.
If you have access to routing strategy and you can edit it. You can add some code to strategy to send the details you need to some web server (for example) or to DB. We do such kind of stuff in our strategy. After successful routing block as a post routing strategy sends values of RTargetPlaceSelected and RTargetAgentSelected.
Try this:
>
Genesyslab.Platform.Contacts.Protocols.ContactServer.Requests.JirayuGetInteractionContent
JirayuGetInteractionContent =
Genesyslab.Platform.Contacts.Protocols.ContactServer.Requests.JirayuGetInteractionContent.Create();
JirayuGetInteractionContent.InteractionId = "004N4aEB63TK000P";
Genesyslab.Platform.Commons.Protocols.IMessage respondingEventY =
contactserverProtocol.Request(JirayuGetInteractionContent);
Genesyslab.Platform.Commons.Collections.KeyValueCollection keyValueCollection =
((Genesyslab.Platform.Contacts.Protocols.ContactServer.Events.EventGetInteractionContent)respondingEventY).InteractionAttributes.AllAttributes;
We are getting AgentID and Place as follows,
Step-1:
Create a Custome Command Class and Add Chain of command In ExtensionSampleModule class as follows,
class LogOnCommand : IElementOfCommand
{
readonly IObjectContainer container;
ILogger log;
ICommandManager commandManager;
public bool Execute(IDictionary<string, object> parameters, IProgressUpdater progress)
{
if (Application.Current.Dispatcher != null && !Application.Current.Dispatcher.CheckAccess())
{
object result = Application.Current.Dispatcher.Invoke(DispatcherPriority.Send, new ExecuteDelegate(Execute), parameters, progress);
return (bool)result;
}
else
{
// Get the parameter
IAgent agent = parameters["EnterpriseAgent"] as IAgent;
IIdentity workMode = parameters["WorkMode"] as IIdentity;
IAgent agentManager = container.Resolve<IAgent>();
Genesyslab.Desktop.Modules.Core.Model.Agents.IPlace place = agentManager.Place;
if (place != null)
{
string Place = place.PlaceName;
}
else
log.Debug("Place object is null");
CfgPerson person = agentManager.ConfPerson;
if (person != null)
{
string AgentID = person.UserName;
log.DebugFormat("Place: {0} ", AgentID);
}
else
log.Debug("AgentID object is null");
}
}
}
// In ExtensionSampleModule
readonly ICommandManager commandManager;
commandManager.InsertCommandToChainOfCommandAfter("MediaVoiceLogOn", "LogOn", new
List<CommandActivator>() { new CommandActivator()
{ CommandType = typeof(LogOnCommand), Name = "OnEventLogOn" } });
enter code here
IInteractionVoice interaction = (IInteractionVoice)e.Value;
switch (interaction.EntrepriseLastInteractionEvent.Id)
{
case EventEstablished.MessageId:
var eventEstablished = interaction.EntrepriseLastInteractionEvent as EventEstablished;
var genesysCallUuid = eventEstablished.CallUuid;
var genesysAgentid = eventEstablished.AgentID;
.
.
.
.
break;
}
I am trying to store messages that I receive in a database using NHibernate. However, there is a possibility that the same message is received twice, and in that case I do not want to save the duplicate in the database. My first thought was to do the following:
// in SaveRange(IEnumerable<Message> messages
var alreadyStoredMessages = session.Query<Message>().Intersect(messages);
var newMessages = messages.Except(alreadyStoredMessages);
However, it seems that NHibernate does not support Intersect so this will result in an exception. I know I could always fetch all the messages, convert them to a list or array, and then do the intersect, but it wouldn't be very effective.
The Message class implements IEquatable and it also overrides GetHashCode() and Equals(object obj). The equality depends on several properties (timestamp, several strings, etc).
if all new messages come at once use a filter:
var alreadyStoredMessages = session.QueryOver<Message>()
.WhereRestrictionOn(m => m.timestamp).In(messages.Select(m => m.timeStamp))
.AsEnumerable()
.Intersect(messages);
var newMessages = messages.Except(alreadyStoredMessages).ToList();
assuming duplicate messages are following short after each other: Hold a buffer of last n received messages and look into them.
var lastMessages = new Queue<Message>(100);
while(true)
{
var message = GetNextMessage();
if (!lastMessages.Contains(message))
{
lastMessages.Enqueue(message);
session.Save(message);
if (lastMessages.Count >= 100);
lastMessages.Dequeue();
}
}