Dear All, Could you please show me how to fixed the error "No buffer space available" in socket programming. My program have two component one send and the other to received. it's run ok, but some time...I got that message and I try to use setsockopt() with maximize size to set SOCK_SENDBUFF, but it's still have that error some times. Thank you very for your ideas and appreciate for help. Nhanle -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/