streamread no puede leer ningún dato de NetworkStream en c#,
sockets network-programming (1)
el código final:
class Program
{
static void Main(string[] args)
{
TcpListener server = null;
try
{
Int32 port = 3000;
// IPAddress localAddr = IPAddress.Parse(IPAddress.Any);
server = new TcpListener(IPAddress.Any, port);
server.Start();
// Buffer for reading data
Byte[] bytes = new Byte[256];
String data = null;
while (true)
{
Console.Write("Waiting for a connection... ");
TcpClient client = server.AcceptTcpClient();
Console.WriteLine("Connected!");
data = null;
NetworkStream stream = client.GetStream();
byte[] aaa = { 0, 1, 0, 2, 0, 11, 3, 0, 1, 0, 4, 195, 128 };
stream.Write(aaa, 0, aaa.Length);
int i;
while ((i = stream.Read(bytes, 0, bytes.Length)) != 0)
{
data = System.Text.Encoding.ASCII.GetString(bytes, 0, i);
Console.WriteLine("Received: {0}", data);
data = data.ToUpper();
byte[] msg = System.Text.Encoding.ASCII.GetBytes(data);
stream.Write(msg, 0, msg.Length);
Console.WriteLine("Sent: {0}", data);
}
client.Close();
}
}
catch (SocketException e)
{
Console.WriteLine("SocketException: {0}", e);
}
finally
{
server.Stop();
}
Console.WriteLine("/nHit enter to continue...");
Console.Read();
}
}
Tengo un sensor que tiene una ip y un puerto 192.168.2.44:3000.
Usé las herculas para conectarme al dispositivo, como puedes ver en la imagen:
enter image description here
Necesito implementar este software en c #, entonces escribo este código:
private static void Main(string[] args)
{
try
{
byte[] buffer = new byte[2048]; // read in chunks of 2KB
int bytesRead;
var listener = new TcpListener(IPAddress.Any, 3000);
listener.Start();
NetworkStream network_stream;
StreamReader read_stream;
StreamWriter write_stream;
var client = listener.AcceptTcpClient();
network_stream = client.GetStream();
read_stream = new StreamReader(network_stream);
write_stream = new StreamWriter(network_stream);
write_stream.WriteLine("00010002000B0300010004C380");
write_stream.Flush(); //veriyi gönderiyor
string gelen;
gelen = read_stream.ReadLine();
Console.WriteLine(gelen);
Console.ReadLine();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
Console.ReadLine();
}
}
Cuando pongo un punto de interrupción, gelen = read_stream.ReadLine(); devuelve null