How to support MSG_WAITALL flag for recv() operation

Question

Hi 
 We need the recv() be blocking until the full amount of requested data can be returned or the operation was timeout, how to achieve this? 
 I tried flag MSG_WAITALL but failed to compile with error 'MSG_WAITALL' undeclared; 
 I also tried flag NRF_MSG_WAITALL but did not work, the recv() also returned the smaller amount of data for first message.

Hakon · Accepted Answer

You should try using the bsdlib socket API, instead of using Zephyr's socket API. For example, you should replace socket() with nrf_socket(), and recv() with nrf_recv().

How to support MSG_WAITALL flag for recv() operation

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