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FreeRTOS+TCP is still in the lab
FreeRTOS+TCP is already used in commercial products and we encourage you to try it yourself. Be aware however that we are still refining its design, and the source code and documentation do not yet meet Real Time Engineers Ltd's strict quality standards.
Please use the forum for support, feedback and ideas, or contact us directly if you have a specific business interest.

FreeRTOS_maywrite()

[FreeRTOS+TCP API Reference]

FreeRTOS_sockets.h
BaseType_t FreeRTOS_maywrite( Socket_t xSocket );
		

Returns the number of bytes that can be added to a TCP socket's Tx stream before the Tx stream is full.

Parameters:

xSocket   The socket being queried.

Returns:

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

If the socket is not in a state that allows data to be sent (for example it is in the Listening state or is in the process of being shut down) then -1 is returned.

If the socket is in the Established the returned value is the number of bytes that can be added to the socket's Tx stream.


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