As I’m trying to figure out the scale and scope of this project and library for Slack I felt it was time to reach out to you lol.

Noobot works with The SlackConnector correct? Or are the entire 2 project separate? I plan to contribute some improvements I have made as I finalize them but just want to make sure my understand is up to speed on the layout.

It would be very helpful if SlackMessage exposed the SubType property of the underlying message.

Hi,

Was wondering is there a way to access the username that is set by the user. At the moment the Username is always set to whatever the email address is minus the @ + domain.

As you can see, i digged into GetMessageUser and this is what the UserCache Contains

Appreciating this library. Initially found three potential issues:

• I can not get attachments to work. The message text goes through though, no exception thrown
• The NuGet package does not install completely under Mono due to framework restrictions
• Logging interface or option to disable logging to console

• TODO:
• Upgrade to .Net 4.6.1
• Replace RestSharp with Flurl
• Replace WebSocketSharp with SocketLite.PCL
• Replace SpecsFor library
• Upgrade project to output Core into nuget package

Does the slack connector offer the ability to upload a file using the api?

Api Reference: https://api.slack.com/methods/files.upload

Additional to issue #9

When SlackConnector deserializing file data it loses file comment. Slack response has file comment in json field: file.initial_comment.comment.
It is major metadata for the file message.

Example of file message with comment:

As result, is not possible to get file comment from incoming SlackFile.

When sending a message from slack using SlackConnector then ChatHub always returns null so my bot cant reply to the message.

I have another bot where ChatHub works. But on my new bot I just created ChatHub returns null.

For some reason it works for a while just after I created the bot but then suddenly stops working and null appears.. Not sure if slack is to blame or SlackConnector

My bot will come online and OnMessageReceive will trigger. When sending interactive messages with request URL setup, i'm given this error

https://i.imgur.com/JHAViaC.png

@Workshop2 any thoughts?

Furl v: 2.3
SlackConnector v: 3.1.176.0

I init my connection like so:

ISlackConnector connector = new SlackConnector.SlackConnector();
_connection = connector.Connect( $"{someValidApiKey}" ).Result;

Line 2 fails with a:

System.AggregateException: 'One or more errors occurred.'
Inner Exception:
MissingMethodException: Method not found: 'Flurl.Url Flurl.Url.SetQueryParam(System.String, System.Object)'.

It would appear this is a fault with Furl and not with SlackConnector. For now, I'll try reverting to previous versions of SlackConnector until I find one that lines up to a Furl version that still works.

Am curious if this plugin will allow for the detection of channel_created events from Slack? This way we can invite the bot the created channel if it matches what we need?

Ergo, we want our bot in any channel that's created for our live chat channels, so we would ideally:

• Listen for the channel_created event
• Invite the bot to the new channel using an invite token from one of our admins
• Bot would join room, and be ready to listen to commands.

Just curious if this would be possible with SlackConenctor?

I am using .net version 4.6.1, and I have verified that TLS 1.2 is available and enabled on the server, Windows Server 2012 R2.

I have tried adding this line of code to the startup section of the program.

System.Net.ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls12

This is the code I use to connect to slack, but the connection fails because I suspect that TLS encryption is failing.

var connector = new SlackConnector.SlackConnector();
            _connection = await connector.Connect(slackKey);
            _connection.OnMessageReceived += MessageReceived;
            _connection.OnDisconnect += OnDisconnect;
            _connection.OnReconnecting += OnReconnecting;
            _connection.OnReconnect += OnReconnect; 

This is the exception we get when initially trying to connect to the Slack server.

02:00:03.3613 ERROR [5] - Bot: Start - Error connecting to Slack: System.AggregateException: One or more errors occurred. ---> WebSocketSharp.WebSocketException: An error has occurred during a TLS handshake. ---> System.Security.Authentication.AuthenticationException: A call to SSPI failed, see inner exception. ---> System.ComponentModel.Win32Exception: The function requested is not supported
--- End of inner exception stack trace ---
at System.Net.Security.SslState.StartSendAuthResetSignal(ProtocolToken message, AsyncProtocolRequest asyncRequest, Exception exception)
at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.ProcessReceivedBlob(Byte[] buffer, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.StartReadFrame(Byte[] buffer, Int32 readBytes, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.ForceAuthentication(Boolean receiveFirst, Byte[] buffer, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.ProcessAuthentication(LazyAsyncResult lazyResult)
at System.Net.Security.SslStream.AuthenticateAsClient(String targetHost, X509CertificateCollection clientCertificates, SslProtocols enabledSslProtocols, Boolean checkCertificateRevocation)
at WebSocketSharp.WebSocket.setClientStream()
--- End of inner exception stack trace ---
at WebSocketSharp.WebSocket.setClientStream()
at WebSocketSharp.WebSocket.doHandshake()
at WebSocketSharp.WebSocket.connect()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at SlackConnector.SlackConnector.d__6.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at SlackConnector.SlackConnector.d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Welton.SlackbotApi.WBotCore.d__7.MoveNext() in C:\BuildAgent1\work\ebdb82161931e455\Company.SlackbotApi\WBotCore.cs:line 47
--- End of inner exception stack trace ---

The program tries to reconnect to slack multiple times in a loop an we eventually get this timeout which is because we are flooding the server with reconnect messages that fail.

---> (Inner Exception #0) SlackConnector.Exceptions.CommunicationException: Error occured while sending message '429'
at SlackConnector.Connections.Clients.ResponseVerifier.VerifyResponse[T](IRestResponse response)
at SlackConnector.Connections.Clients.RequestExecutor.d__4`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at SlackConnector.Connections.Clients.Handshake.HandshakeClient.d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at SlackConnector.SlackConnector.d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

Any tips would be helpful. Not sure if this is an issue with the package itself or I am just using it incorrectly.

Thanks!

Hi!

Is any way to download message attachments?

See https://api.slack.com/docs/message-buttons

In SlackConnection.Close the _pingPongMonitor is not stopped. Therefore the Timer in the ping-pong monitor keeps a reference and holds the connection alive (no GC) + it tries to ping-pong every 5 s although I closed the corresponding SlackConnection.

I suggest adding a method StopMonitor to IPingPongMonitor which disables the timer:

        public void StopMonitor()
        {
            _timer?.Dispose();
            _timer = null;
        }

Any objections?

Best regards,
D.R.

I noticed none of the channel creation stuff is public. Could there be something exposed to create a channel?

Look into using Common.Logging

I have a console app that's logging to Slack, and within the last update or so I have started seeing this steady stream of errors:

Unable to parse message:
Newtonsoft.Json.JsonReaderException: Error reading JObject from JsonReader. Path '', line 0, position 0.
   at Newtonsoft.Json.Linq.JObject.Load(JsonReader reader, JsonLoadSettings settings)
   at Newtonsoft.Json.Linq.JObject.Parse(String json, JsonLoadSettings settings)
   at SlackConnector.Connections.Sockets.Messages.Inbound.MessageInterpreter.ParseMessageType(String json)
   at SlackConnector.Connections.Sockets.Messages.Inbound.MessageInterpreter.InterpretMessage(String json)

I am debugging, and I have breakpoints everywhere that SlackConnector is used--but nothing is triggering. I'm set to break on all exceptions of any kind, but I'm not catching this one.

Communication to/from slack appears to be unaffected, but the noise level is now very high in the console. This seems to be the code that logs the error

Hello i am new to making slack bots, now is my question do you get the messages from slack and where is this saved?

i can already send messages but just sending is useless when you didn't know what you got.

in FlurlChatClient.cs, requests are sent by putting all parameters on the query string, including any attachments. This severely limits the size of messages and attachments that can be sent.

Error occured while posting message 'method_deprecated'
SlackConnector.Exceptions.CommunicationException

SlackConnector.Connections.Clients.ResponseVerifier.VerifyResponse(StandardResponse response)
SlackConnector.Connections.Clients.Channel.FlurlChannelClient.d__17.MoveNext()

https://api.slack.com/changelog/2020-01-deprecating-antecedents-to-the-conversations-api

Hi, and thanks for the great work! I'm trying to get this working in a console app, but I'm having a problem. Execution stops abruptly in RequestExecutor.Execute, on this line:

IRestResponse response = await client.ExecutePostTaskAsync(request);

There's no exception that I can detect... I think the await is just never returning - but it doesn't hang, it exits.

I know this is a restsharp call. The key is correct (works in Margibot). Any idea what to try here?

I'm trying to run Noobot "out of the box" but I cannot get a connection to go through our proxy server.
I have configured

  <system.net>
    <defaultProxy enabled="true" useDefaultCredentials="true">
      <proxy usesystemdefault="True"/>
    </defaultProxy>
  </system.net>

in App.config in Noobot but I still get a connection error.
Running Fiddler I can see that there is a request to https://slack.com/api/rtm.start which returns a json object, so that works fine. However initiating the WebSocket connection afterwards fails because it doesn't try to connect through the configured proxy. The request never shows up in Fiddler, and I get the well-known "No connection could be made because the target machine actively refused it".

I don't see a way to provide proxy settings for the connector

I'm getting crashes when a user messages the "bot" for the first time and a ChatHub is created. It's a key not found in dictionary exception, created in the HandleMessage(inboundMessage) method of SlackConnection. Even though the inboundMessage has a Channel string provided, it is not present in the _connectedHubs dictionary. Perhaps it just needs to sleep for a while to let the _connectedHubs dictionary to update?

Subsequent messages received from the user don't cause a crash, as the session is present in the ConnectedDMs() ... only happens the first time.

Its OK if there isn't, I just don't see something obvious

Hi just wondering is it possible to have some interactive messages ? Would be a great feature to have.

https://api.slack.com/docs/message-buttons

I cannot connect to Slack with this error, usually in full:

NotSupportedException:  The Write method cannot be called when another write operation is pending.

Which seems to be well documented, but somewhat old in other deps. See:

• 1iveowl/WebsocketClientLite.PCL#32
• 1iveowl/SocketLite.PCL#5
• rabbitmq/rabbitmq-dotnet-client#417 (not directly related but useful)

Hi,
I got the package from nuGet within VS.
I first used the few lines from your Usage section
looks like connection.OnConnectionStatusChanged does not exists anymore.

Then about the slackKey in
ISlackConnection connection = await connector.Connect(slackKey);

not sure what I should put there. Is that the token generated by slack token generator ?
or ?

Thx

{"type":"im_created","user":"U0DKUTE0L","channel":{"id":"D0EEU58RL","is_im":true,"user":"U0DKUTE0L","created":1447411860,"last_read":"0000000000.000000","latest":null,"unread_count":0,"unread_count_display":0,"is_open":false}}

Hi, my current setup is as followed. I have 2 projects, one console app for the bot purposes (onmessagereceived, onuserjoined, ondisconnected, onreconnect) and a asp.net mvc app to capture post request sent when an interactive messages are clicked. I send a basic response back to the chat but it seems the bot doesn't trigger onmessagereceived when that happens.

Ran into an issue recently using Noobot where I hit Slack's max URL length calling chat.postMessage. Seems this limit could be increased by switching to use an HTTP POST on the call to chat.postMessage and sending the payload as JSON which supports up to 40,000 characters in its text parameter: https://api.slack.com/methods/chat.postMessage

If you're open to PR's I may be able to make this adjustment.

I am using Noobot nuget package 3.1.35 and Slack Connector nuget package 4.1.16

When my client connects I am receiving an exception "'Requested value 'hello' was not found.'"

The message received is here: https://api.slack.com/events/hello

The MessageInterpreter is erroneously assuming any message that it receives that is not in the enum is a chat message and tries to deserialize it as such. That feels like a pretty big point of fragility, especially given that the chat message has a well defined type.

For attachments, there is a property that can be used to control what gets formatted. I may just be thick headed and missing it, can you let me know if there is something existing that controls this?

// "mrkdwn_in": ["text", "pretext", "fields"],

Would be pretty userful if you could pass through the IsAdmin property from User to SlackUser :)

On February 19, 2020, Slack will end support for TLS versions 1.0 and 1.1. We've identified that one or more of your Slack apps are impacted by this change. If you don't upgrade your app to TLS 1.2, requests sent to any Slack endpoint will fail.
You must update your Slack app before February 21, 2020. Please verify which of your Slack apps are affected: https://api.slack.com/unsafe-tls-deprecation

In code i just use

      var client = new SlackConnector.SlackConnector();
      connect = await client.Connect(token);

have u apps in https://api.slack.com/unsafe-tls-deprecation or its only my problem?

Hi, I can't connect with proxy:
p.s. The error seems to be with the nuget library is WebsocketClientLite.PCL
System.InvalidOperationException
HResult=0x80131509
Message=The operation is not allowed on non-connected sockets.
Source=System
StackTrace:
at System.Net.Sockets.TcpClient.GetStream()
at SocketLite.Services.TcpSocketClient.d__19.MoveNext()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at WebsocketClientLite.PCL.MessageWebSocketRx.d__15.MoveNext()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at SlackConnector.Connections.Sockets.WebSocketClientLite.d__7.MoveNext()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at SlackConnector.Connections.ConnectionFactory.d__0.MoveNext()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at SlackConnector.SlackConnector.d__5.MoveNext()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at TopShelf2.SlackConnect.d__4.MoveNext() in C:\mygit\TopShelf2\TopShelf2\Program.cs:line 40

First, thanks for the great project!
We need support for LinkButtons which requires the SlackAttachmentAction to pass url field in the json.