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##

# TCPIP_TCP_FifoRxFreeGet Function

## C

    uint16_t TCPIP_TCP_FifoRxFreeGet(
        TCP_SOCKET hTCP
    );

## Description

This function determines how many bytes are free in the RX buffer/FIFO.

## Preconditions

TCP is initialized.

## Parameters

Parameters | Description
--- | ---
hTCP | The socket to check.

## Returns

The number of bytes free in the TCP RX FIFO. If zero, no additional data can be received until the application removes some data using one of the TCPIP_TCP_Get family functions.