LibrariesinsideAPI reference

Updated Jul 2025

FreeRTOS_issocketconnected()

[FreeRTOS-Plus-TCP API Reference]

FreeRTOS_sockets.h

1BaseType_t FreeRTOS_issocketconnected( Socket_t xSocket );

Tests to see if a socket is connected.

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 in the Established or a FIN wait state then pdTRUE is returned. Otherwise pdFALSE is returned;