Hello, thank you for the hint Makc. I did some changes on my code and now it works fine. The problem really was that WriteLine adds an extra \n at the end of the line. Thank you guys ~Sepp Makc The Great schrieb:

Sepp wrote:

...

writer.WriteLine("-k 84.149.167.143\n");

I am just guessing but could it be that WriteLine call appends newline on its own, and so it has an effect of sending empty string after 84.149.167.143?