On Wed, 2004-11-24 at 22:22 +0100, Jon-Eirik Pettersen wrote:
I don't think I have enough information to do it.
It says the stream is seek-able because it thinks it is a normal file it is opening, but seeking do not seems to work on devices.
The bug is exactly that. The runtime should figure out whether the file is seekable or not.
But if I send the data directly to the FileStream using the Write-function it works, but I have problems reading the data from the stream.
Try using the stream in the file attached.
-Gonzalo
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using System.IO;
class NoSeekStream : FileStream { public NoSeekStream (string name, FileMode mode, FileAccess access) : base (name, mode, access) { }
public override bool CanSeek { get { return false; } } }
I have made a buggy application that is able to send data (if I send ATZxxxxxxxx I can see in the other end that it works), but it is not able to receive data:
using System; using System.Text; using System.IO; using System.Threading; using System.Collections;
namespace serialchattest {
class serialchattest {
static string device = "/dev/rfcomm0";
static ArrayList rbuf = new ArrayList();
static FileStream fs = null;
static StreamReader sr = null; static void SendCommand(string cmd) {
try {
string data = cmd + "\r\n";
byte[] bt = Encoding.UTF8.GetBytes(data);
fs.Write(bt, (int) fs.Position, bt.Length);
sr.ReadLine();
} catch (Exception) {} finally {}
} static void ReadResponse() {
string data = null;
while ((data = sr.ReadLine()) != null) {
rbuf.Add(data);
}
} static string GetResponse() {
try {
if (rbuf.Count > 0) {
string ret = (string) rbuf[0];
rbuf.RemoveAt(0);
return ret;
} else {
return null;
}
} catch (Exception) { return null; } finally {}
}static void Main() {
fs = new FileStream(device, FileMode.Open, FileAccess.ReadWrite, 0, 1024, true);
sr = new StreamReader(fs);
SendCommand("AT");
string res = null;
ReadResponse();
while ((res = GetResponse()) != null) {
Console.WriteLine(res);
}
}
}
}
The result is:
Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object
Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object
Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object
Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object
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