Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

non-blocking LWIP Ethernet Socket

Has anyone been able to setup a socket non-blocking with LWIP on uC/OS-II? I have found that the fcntl() is not supported. My application is using the socket as a control channel that I ch...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

You are correct that there is no fcntl() for LWIP. However there is a handy ioctl which will do what you want FIONBIO.

The syntax is to set non blocking

int fred = 1;

ioctlsocket(your_socket,FIONBIO,&fred)

Simply set fred to 0 for blocking.

I've not tested this, so caveat emptor