/// <summary>
/// Register this device at the relay service and return a socket
/// for upcoming requests (and their responses).
/// </summary>
/// <returns>Socket on which a request can be awaited.</returns>
public Stream Accept()
{
bool a;
lock (abortedLock)
{
a = aborted;
}
if (a)
{
throw new InvalidOperationException();
}
else
{
string host = LocalHostName;
int port = LocalPort;
Stream s;
bool acceptable; // end of headers found
int[] x = new int[3];
byte[] b = new byte[1];
do
{
s = relay.Connect(LocalHostName, LocalPort);
do
{
byte[] buf = Encoding.UTF8.GetBytes(
"POST /" + Domain + " HTTP/1.1\r\n" +
"Upgrade: PTTH/1.0\r\n" +
"Connection: Upgrade\r\n" +
"Host: " + host + "\r\n\r\n");
s.Write(buf, 0, buf.Length);
for (int j = 0; j != 12; j = j + 1)
{
int n = s.Read(b, 0, 1);
x[j % 3] = n != 0 ? b[0] : -1;
}
if ((x[0] == '3') && (x[1] == '0') && (x[2] == '7'))
{
FindLocation(s, out host, out port);
}
Find("\r\n\r\n", s, out acceptable);
Contract.Assert(acceptable); // test
} while (acceptable && ((x[0] == '2') && (x[1] == '0') && (x[2] == '4')));
if (!acceptable || (x[0] != '1') || (x[1] != '0') || (x[2] != '1'))
{
s.Close();
s = null;
}
} while (acceptable && ((x[0] == '3') && (x[1] == '0') && (x[2] == '7')));
return(s);
}
}