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communicating with a console application

4 New Member

I'm trying to communicate with a console application through a c# program.
the console application is micq a console based ICQ client.
I want to be able to send an receive messages through the micq and then act upon them.

I've been using the System.Diagnost ics.Process class and redirecting the input and output stream. R
eading the output works fine, but I am not able to send any commands to the application. Or better, micq doesn't act upon the commands I send him.

See the code below for more detail.
I would be really glad, if anyone could help me. I'm goin mad already. Oh and I'm not a very good programmer, so excuse me if the code isn't neat! :)

Oh I use a new threat to read the output, because the ReadLine() command freezes if it reaches the end of the console output..

Expand|Select|Wrap|Line Numbers
  1. using System.Data;
  2. using System.Drawing;
  3. using System.Text;
  4. using System.Windows.Forms;
  5. using System.Threading;
  6. using System.IO;
  9. namespace test6
  10. {
  13.     public partial class Form1 : Form
  14.     {
  15.         static System.Diagnostics.Process p;
  16.         static string test;
  17.         static System.IO.StreamWriter mystreamwriter ;
  19.         public Form1()
  20.         {
  21.             InitializeComponent();
  24.             p = new System.Diagnostics.Process();
  25.             p.StartInfo.FileName = "cmd.exe";
  26.             p.StartInfo.UseShellExecute = false;
  27.             p.StartInfo.RedirectStandardOutput = true;
  28.             p.StartInfo.RedirectStandardInput = true;
  29.             p.StartInfo.CreateNoWindow = false;
  30.             p.StartInfo.StandardOutputEncoding = Encoding.ASCII;
  32.         }
  34.         ~Form1()
  35.         {
  36.             p.StandardInput.WriteLine("exit");
  37.         }
  39.         private void startbtn_Click(object sender, EventArgs e)
  40.         {
  41.             p.Start();
  42.             label1.Text = "IDLE";
  44.             mystreamwriter = p.StandardInput;
  45.             mystreamwriter.WriteLine("micq -u ICQNUMBER -p PASSWORD -c");
  46.             mystreamwriter.AutoFlush = true;
  48.         }
  50.         private void pwdbtn_Click(object sender, EventArgs e)
  51.         {
  52.             //p.StandardInput.WriteLine("think960");
  53.             //mystreamwriter.Write("");
  54.         }
  56.         private void sendbtn_Click(object sender, EventArgs e)
  57.         {
  58.             mystreamwriter.WriteLine("msg 12345678 test-von-c#");
  59.             mystreamwriter.Flush();
  60.             mystreamwriter.Close();
  62.         }
  64.         private void Form1_Load(object sender, EventArgs e)
  65.         {
  67.         }
  69.         private void getoutputbtn_Click(object sender, EventArgs e)
  70.         {
  71.             test = "";
  73.             getoutput workerObject = new getoutput();
  74.             Thread workerThread = new Thread(workerObject.DoWork);
  76.             // Start the worker thread.
  77.             workerThread.Start();
  78.             //test +="main thread: Starting worker thread...";
  80.             // Loop until worker thread activates.
  81.             while (!workerThread.IsAlive) ;
  83.             // Put the main thread to sleep for 1 millisecond to
  84.             // allow the worker thread to do some work:
  85.             Thread.Sleep(5);
  87.             // Request that the worker thread stop itself:
  88.             workerObject.RequestStop();
  89.             label1.Text += test;
  91.         }
  93.         private void getcharbtn_Click(object sender, EventArgs e)
  94.         {
  97.         }
  99.         public class getoutput
  100.         {
  101.             // This method will be called when the thread is started.
  102.             public void DoWork()
  103.             {
  104.                 while (!_shouldStop)
  105.                 {
  106.                     string sOutput;
  107.                     sOutput = p.StandardOutput.ReadLine();
  108.                     test += "\n" + sOutput;
  109.                 }
  110.                 test += "worker thread: terminating gracefully.";
  111.             }
  112.             public void RequestStop()
  113.             {
  114.                 _shouldStop = true;
  115.             }
  116.             // Volatile is used as hint to the compiler that this data
  117.             // member will be accessed by multiple threads.
  118.             private volatile bool _shouldStop;
  119.         }//class getoutput
  121.         private void button1_Click(object sender, EventArgs e)
  122.         {
  123.             p.StandardInput.Write("exit\n");
  124.             p.Close();
  125.         }
  128.     }//Form1
  131. } // namespace
Aug 9 '07 #1
6 1726
7,872 Recognized Expert Expert
Since you are starting with cmd.exe I believe that when you tell it to run micq it's actually making a new process(or close enough) and it's getting it's own set of in/out streams.

You could try starting micq as a process itself instead of cmd.exe
Aug 9 '07 #2
4 New Member

yeah I've tried that already... I've tried pretty much everything I could think of, it just doen't want to work....

If I run the process with createnowindow = false,
It opens a console like window, with no output. I guess that is because the output is being redirected.
But the weird part is, that if I click into that window and type a command for micq, micq actually executes that command, but through my C# programm it doesn't?!

Any Ideas?
Aug 9 '07 #3
7,872 Recognized Expert Expert
Hmm which port of mICQ do you have? I saw a cygwin and a mingw.
Neither looked to be very windows native.
I'm not sure what to tell you except maye to try and redirect only one of the streams at a time and see if you can control that?
Aug 9 '07 #4
4 New Member
I have been using the MinGW micq

and yeah I think they were made for linux. you think that could be the problem?
I've read about similar problems in another forum, but there was no real solution

Oh, and I also already tried only redirecting one stream...

Aug 9 '07 #5
4 New Member
Just in case, someone cares... :)

I got it to work with the other version of micq

Aug 9 '07 #6
7,872 Recognized Expert Expert
really? the cygwin version worked?
(cygwin is an attempt at a linux port for windows)
Aug 10 '07 #7

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