I'm trying to implement a SCS framework server with WinForms in C# but I am having issues making it work. The server standalone works fine when using it in the Main method (no WinForms). I have a client-sided and a server-sided sample code from the SCS framework that I'm trying to implement in WinForms together with some of my own code. It all went well until I decided to try and use WinForms aswell (I had to move the server code to a class of it's own).
I am not getting any errors when I am starting the server, however I can't connect with the client anymore (worked before I moved the server to a class of its own). Client gets System.Net.Sockets.SocketException. On the server-side, I get the error System.InvalidOperationException when the client is trying to connect.
This is my Form1.cs:
using System;
using System.Windows.Forms;
namespace Server_Test
{
public partial class Form1 : Form
{
public static Form1 Self;
Server server = new Server();
public Form1()
{
InitializeComponent();
Self = this;
}
public void rtb1Text(string text)
{
richTextBox1.AppendText(text);
}
public void rtb2Text(string text)
{
richTextBox2.Text = text;
}
private void button1_Click(object sender, EventArgs e)
{
if (button1.Text.EndsWith("Start"))
{
button1.Text = "Stop";
server.ServerInit();
}
else if (button1.Text.EndsWith("Stop"))
{
button1.Text = "Start";
// Does nothing atm
}
}
}
}
And this is my Server.cs
using System;
using Hik.Communication.Scs.Communication.EndPoints.Tcp;
using Hik.Communication.Scs.Communication.Messages;
using Hik.Communication.Scs.Server;
namespace Server_Test
{
class Server
{
public void ServerInit()
{
// Create a server that listens 10085 TCP port for incoming connections
var server = ScsServerFactory.CreateServer(new ScsTcpEndPoint(10085));
// Register events of the server to be informed about clients
server.ClientConnected += Server_ClientConnected;
server.ClientDisconnected += Server_ClientDisconnected;
// Start the server
server.Start();
// Form1.Self.rtb1Text("Server has been started successfully.\n");
Console.WriteLine("Server has been started successfully.\n");
}
static void Server_ClientConnected(object sender, ServerClientEventArgs e)
{
Form1.Self.rtb1Text("A new client with ID: " + e.Client.ClientId + " has connected.\n");
// Register to MessageReceived event to receive messages from new client
e.Client.MessageReceived += Client_MessageReceived;
}
static void Server_ClientDisconnected(object sender, ServerClientEventArgs e)
{
Form1.Self.rtb1Text("A client is disconnected! Client Id = " + e.Client.ClientId + "\n");
}
static async void Client_MessageReceived(object sender, MessageEventArgs e)
{
var message = e.Message as ScsTextMessage; // Server only accepts text messages
if (message == null)
{
return;
}
//Get a reference to the client
var client = (IScsServerClient)sender;
Form1.Self.rtb1Text("Client (ID:" + client.ClientId + ") sent a request: " + message.Text + "\n");
switch (message.Text)
{
case "api":
HttpPost httpPost = new HttpPost();
var apiResponse = await httpPost.SendPost("robot_info");
//Send reply message to the client
client.SendMessage(
new ScsTextMessage(
apiResponse,
message.MessageId //Set first message's id as replied message id
));
break;
default:
break;
}
}
}
}
My guess is that I'm doing something wrong when creating a new instance of the Server class and how I'm initializing/starting the server. Might be something else though, I've tried debugging but it didn't make me any smarter.
Any ideas?