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FreeRTOS+TCP V2 is now included in the main FreeRTOS kernel download under the MIT license.


[FreeRTOS+TCP API Reference]

BaseType_t FreeRTOS_recvcount( Socket_t xSocket );

Returns the number of bytes in a TCP socket's Rx stream that are yet to be read.


xSocket   The socket being queried.


If the socket referenced by the xSocket parameter is not a TCP socket then -pdFREERTOS_ERRNO_EINVAL is returned.

If the socket referenced by the xSocket parameter does not yet have an Rx stream then 0 is returned (the Rx stream is not created until it is required).

In all other cases the returned value is the number of bytes that remain in the socket's Rx stream.

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