public static void Main()
{
Console.WriteLine("*** Named Pipe Server ***");
Console.WriteLine("Enter pipe name and press ENTER");
var pipeName = Console.ReadLine();
if (string.IsNullOrEmpty(pipeName))
{
pipeName = "ChipID";
Console.WriteLine($"Using default pipe name of \"{pipeName}\"");
}
Console.WriteLine("Waiting for client to connect...");
// Server can only receive input with this pipe, it's not duplex.
var pipeServer = new NamedPipeServerStream(pipeName, PipeDirection.In, 1);
// Wait for a client to connect
pipeServer.WaitForConnection();
Console.WriteLine("Client connected\n");
try
{
// For reading data from the client.
var ss = new StreamString(pipeServer);
while (true)
{
var tagId = ss.ReadString();
// Empty string received from client is the trigger to close the connection.
if (string.IsNullOrEmpty(tagId))
{
break;
}
Console.WriteLine($"Received tag {tagId}");
}
}
catch (IOException e)
{
// Catch the exception that is raised if the pipe is broken or disconnected.
Console.WriteLine($"ERROR: {e.Message}");
}
pipeServer.Close();
// Keep the console open for a while.
Thread.Sleep(2000);
}
private static void ServerThread(object data)
{
NamedPipeServerStream pipeServer =
new NamedPipeServerStream("testpipe", PipeDirection.InOut, numThreads);
int threadId = Thread.CurrentThread.ManagedThreadId;
// Wait for a client to connect
pipeServer.WaitForConnection();
Console.WriteLine("Client connected on thread[{0}].", threadId);
try
{
// Read the request from the client. Once the client has
// written to the pipe its security token will be available.
StreamString ss = new StreamString(pipeServer);
// Verify our identity to the connected client using a
// string that the client anticipates.
ss.WriteString("I am the one true server!");
string filename = ss.ReadString();
// Read in the contents of the file while impersonating the client.
ReadFileToStream fileReader = new ReadFileToStream(ss, filename);
// Display the name of the user we are impersonating.
Console.WriteLine("Reading file: {0} on thread[{1}] as user: {2}.",
filename, threadId, pipeServer.GetImpersonationUserName());
pipeServer.RunAsClient(fileReader.Start);
}
// Catch the IOException that is raised if the pipe is broken
// or disconnected.
catch (IOException e)
{
Console.WriteLine("ERROR: {0}", e.Message);
}
pipeServer.Close();
}
public ReadFileToStream(StreamString str, string filename)
{
fn = filename;
ss = str;
}
