Cannot connect to POS printer over TCP 9100

0
votes

I'm using:

  • Visual Studio 2012 Express, C#, .NET Framework 2.0
  • POS printer : TYSSO PRP-300, IP:192.168.1.100

I connect successfully to the printer using:

C:\> telnet 192.168.1.100 9100
_

Also using:

C:\> portqry -n 192.168.1.100 -e 9100 -p TCP
TCP port 9100 (unknown service): LISTENING

But when using this code:

TcpClient c = new TcpClient("192.168.1.100", 9100);

I got this exception:

An unhandled exception of type 'System.Net.Sockets.SocketException' occurred in System.dll Additional information: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

1
c#printingescpos

1 Answers

0
votes

It works when I compile the same code with .NET framework 4.0

I think there was a problem with 2.0 version!