CC3100SDK: sl_Recv is returning SL_EAGAIN when in blocking mode.

stpaul

Part Number: CC3100SDK

Hello

I am getting the error SL_EAGAIN when there are no more bytes to receive using sockets in blocking mode. It is my understanding that this error should only occur in non blocking mode.

Please advise why this error occurs when there are no more bytes to receive using sockets in blocking mode.

It is my understanding that a value of zero should be returned in blocking mode when a time out is used. Is this correct?

Regards,

Steve

over 5 years ago

0 Kobi Leibovitch over 5 years ago

TI__Guru 61446 points

Hi Steve,

EAGAIN is the return value in case of Receive Timeout.
0 is retrieved once the peer closes the connection.

Br,
Kobi

0 stpaul over 5 years ago in reply to Kobi Leibovitch

Intellectual 260 points

Hi Kobi

To confirm, EAGAIN is the expected error when a receive time out occurs and there is no more data to receive. Is this correct?
Also, by receive time out, do you mean a timeout occurring in sl_recv via the SL_SO_RCVTIMEO socket option or some other timeout? I am setting the SL_SO_RCVTIMEO socket option but wanted to confirm we are talking about the same timeout mechanism.

Thank you.

Best Regards,
Steve

0 Kobi Leibovitch over 5 years ago in reply to stpaul

TI__Guru 61446 points

Yes, if you set the "SL_SO_RCVTIMEO", then a call to sl_Recv (that is not receiving any data) will return after the given timeout with EAGAIN value.

Wi-Fi

Wi-Fi forum

CC3100SDK: sl_Recv is returning SL_EAGAIN when in blocking mode.