CODEWITHSUNDEEP
c#imagetcpclient-servernetworkstream
Murhaf Sousli
Murhaf Sousli

Reputation: 13296

Cannot receive Image over TCP socket?

I have problem with receiving an image over TCP socket [.net 4.0]

Server:

Socket s = null;
Socket client;
private void button1_Click(object sender, EventArgs e)
    {
        s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
        s.Bind(new IPEndPoint(IPAddress.Any, 9988));
        s.Listen(1);
        client = s.Accept();

        pictureBox1.Image = Image.FromStream(new NetworkStream(client));
        //Server freezes here and waiting for the image .. but in the Client side.. it tells that it sent.

        Console.WriteLine("Received.");
    }

Client:

Socket s = null;
private void button1_Click(object sender, EventArgs e)
    {
        s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
        s.Connect(new IPEndPoint(IPAddress.Parse("127.0.0.1"), 9988));
        Rectangle bounds = Screen.GetBounds(Point.Empty);
        Bitmap bitmap = new Bitmap(bounds.Width, bounds.Height);
        Graphics g = Graphics.FromImage(bitmap);
        g.CopyFromScreen(Point.Empty, Point.Empty, bounds.Size);
        bitmap.Save(new NetworkStream(s), ImageFormat.Png);
        Console.WriteLine("sent.");
    }

Edit: im making a big application .. image was receiving just fine .. then i did some changes on the code so it got complicated to know what did i exactly change .. now it's not working .. so i made new projects and tried the code up.. still doesn't work .. i know that there's another ways to do it.. but i prefer to do this way. Anyone knows how to fix it ??

Upvotes: 0

Views: 1001

Answers (2)

Tarek Adel
Tarek Adel

Reputation: 161

i think you need to convert the image to byte and then get the byte's size and send it to the server, the server prepares the buffer size and then the client send the image's bytes, you can find s video on how to do it Right Here

Upvotes: 1

C.Evenhuis
C.Evenhuis

Reputation: 26446

Most probably you need to close the socket after sending the data.

Image.FromStream() probably waits until the NetworkStream indicates there are no more bytes to process, but since you declared the Socket on the form's class level, it stays connected and the server waits for more data.

Upvotes: 0

Related Questions