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FreeRTOS_ReleaseUDPPayloadBuffer() [FreeRTOS+TCP API Reference] FreeRTOS_sockets.h void FreeRTOS_ReleaseUDPPayloadBuffer( void *pvBuffer ); FreeRTOS_ReleaseUDPPayloadBuffer() is used to return to the TCP/IP stack a buffer that was used with the zero copy interface. The zero copy interface for transmitting data is described on the FreeRTOS_sendto() documentation page. The zero copy interface for receiving data is described on the FreeRTOS_recvfrom() documentation page. A buffer needs to be returned to the stack if: It is obtained from a call to FreeRTOS_recvfrom() and the data it contains is no longer required, or It was obtained from a call to FreeRTOS_GetUDPPayloadBuffer() but the buffer could not be passed into the TCP/IP stack (the call to FreeRTOS_sendto() in which the buffer was used failed). A buffer can also be re-used rather than returned to the TCP/IP stack. Parameters: pvBuffer   The buffer that is being returned to the TCP/IP stack. Example usage: The FreeRTOS_sendto() documentation page includes an example zero copy send operation that demonstrates how to use FreeRTOS_ReleaseUDPPayloadBuffer() when the send operation fails. the FreeRTOS_recvfrom() documentation page includes an example that demonstrates how to use FreeRTOS_ReleaseUDPPayloadBuffer() to release a buffer obtained from a call to FreeRTOS_recvfrom(). [ Back to the top ]    [ About FreeRTOS ]    [ Privacy ]    [ FreeRTOS Labs Sitemap ]    [ Main FreeRTOS Sitemap ]    [ ] Copyright (C) Amazon Web Services, Inc. or its affiliates. All rights reserved.