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/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** NetX Component */
/** */
/** Transmission Control Protocol (TCP) */
/** */
/**************************************************************************/
/**************************************************************************/
#define NX_SOURCE_CODE
/* Include necessary system files. */
#include "nx_api.h"
#include "nx_ip.h"
#include "nx_tcp.h"
/* Bring in externs for caller checking code. */
NX_CALLER_CHECKING_EXTERNS
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nxe_tcp_server_socket_listen PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function checks for errors in the server socket listen */
/* function call. */
/* */
/* INPUT */
/* */
/* ip_ptr Pointer to IP instance */
/* port TCP port number */
/* socket_ptr Server socket pointer */
/* listen_queue_size Maximum number of connections */
/* that can be queued */
/* tcp_listen_callback Callback routine when a */
/* connect request arrives */
/* */
/* OUTPUT */
/* */
/* status Completion status */
/* */
/* CALLS */
/* */
/* _nx_tcp_server_socket_listen Actual server socket listen */
/* function */
/* */
/* CALLED BY */
/* */
/* Application Code */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 05-19-2020 Yuxin Zhou Initial Version 6.0 */
/* 09-30-2020 Yuxin Zhou Modified comment(s), */
/* resulting in version 6.1 */
/* */
/**************************************************************************/
UINT _nxe_tcp_server_socket_listen(NX_IP *ip_ptr, UINT port, NX_TCP_SOCKET *socket_ptr, UINT listen_queue_size,
VOID (*tcp_listen_callback)(NX_TCP_SOCKET *socket_ptr, UINT port))
{
UINT status;
/* Check for invalid input pointers. */
if ((ip_ptr == NX_NULL) || (ip_ptr -> nx_ip_id != NX_IP_ID) ||
(socket_ptr == NX_NULL) || (socket_ptr -> nx_tcp_socket_id != NX_TCP_ID))
{
return(NX_PTR_ERROR);
}
/* Check to see if TCP is enabled. */
if (!ip_ptr -> nx_ip_tcp_packet_receive)
{
return(NX_NOT_ENABLED);
}
/* Check for an invalid port. */
if ((!port) || (((ULONG)port) > (ULONG)NX_MAX_PORT))
{
return(NX_INVALID_PORT);
}
/* Check for appropriate caller. */
NX_THREADS_ONLY_CALLER_CHECKING
/* Call actual TCP server socket listen function. */
status = _nx_tcp_server_socket_listen(ip_ptr, port, socket_ptr, listen_queue_size, tcp_listen_callback);
/* Return completion status. */
return(status);
}