public async Task <string> ReadStringFromDevice(char stopAt, int maxSeconds)
{
byte[] buffer = new byte[1024]; // buffer store for the stream
int bytes; // bytes returned from read()
string message = readString;
if (!_socket.InputStream.CanRead)
{
return("");
}
try
{
DataInputStream mmInStream = new DataInputStream(_socket.InputStream);
System.Diagnostics.Stopwatch stopWatch = new System.Diagnostics.Stopwatch();
stopWatch.Start();
TimeSpan maxTime = new TimeSpan(0, 0, maxSeconds);
while (true)
{
// Delay for 0.1 seconds
Thread.Sleep(100);
// Read from input string
buffer = new byte[1024];
bytes = await mmInStream.ReadAsync(buffer);
string chunck = Encoding.ASCII.GetString(buffer, 0, bytes);
if (chunck.Contains(stopAt))
{
int index = chunck.IndexOf(stopAt) + 1;
message += chunck.Substring(0, index);
if (index < chunck.Length)
{
readString = chunck.Substring(index);
}
else
{
readString = "";
}
return(message);
}
else
{
message += chunck;
}
if (stopWatch.Elapsed == maxTime)
{
message = "";
stopWatch.Stop();
break;
}
}
stopWatch.Stop();
}
catch
{
return(message);
}
return(message);
}
