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/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
* Copyright (c) 2025-present Eclipse ThreadX Contributors
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** NetX Component */
/** */
/** Transmission Control Protocol (TCP) */
/** */
/**************************************************************************/
/**************************************************************************/
#define NX_SOURCE_CODE
/* Include necessary system files. */
#include "nx_api.h"
#include "nx_tcp.h"
/* Bring in externs for caller checking code. */
NX_CALLER_CHECKING_EXTERNS
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nxde_tcp_client_socket_connect PORTABLE C */
/* 6.4.3 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function checks for errors in the TCP client socket connect */
/* function call. */
/* */
/* INPUT */
/* */
/* socket_ptr Pointer to TCP client socket */
/* server_ip IP address of server */
/* server_port Port number of server */
/* wait_option Suspension option */
/* */
/* OUTPUT */
/* */
/* status Acctual completion status */
/* NX_PTR_ERROR Invalid pointer input */
/* NX_NOT_ENABLED TCP not enabled */
/* NX_IP_ADDRESS_ERROR Invalid TCP server IP address */
/* NX_INVALID_PORT Invalid TCP server port */
/* */
/* CALLS */
/* */
/* _nxd_tcp_client_socket_connect Actual client socket connect */
/* function */
/* */
/* CALLED BY */
/* */
/* Application Code */
/* */
/**************************************************************************/
UINT _nxde_tcp_client_socket_connect(NX_TCP_SOCKET *socket_ptr,
NXD_ADDRESS *server_ip,
UINT server_port, ULONG wait_option)
{
UINT status;
/* Check for invalid input pointers. */
if ((socket_ptr == NX_NULL) || (socket_ptr -> nx_tcp_socket_id != NX_TCP_ID))
{
return(NX_PTR_ERROR);
}
/* Verify TCP is enabled. */
if (!(socket_ptr -> nx_tcp_socket_ip_ptr) -> nx_ip_tcp_packet_receive)
{
return(NX_NOT_ENABLED);
}
/* Check for valid TCP server address. */
if (server_ip == NX_NULL)
{
return(NX_IP_ADDRESS_ERROR);
}
/* Check that the server IP address version is either IPv4 or IPv6. */
if ((server_ip -> nxd_ip_version != NX_IP_VERSION_V4) &&
(server_ip -> nxd_ip_version != NX_IP_VERSION_V6))
{
return(NX_IP_ADDRESS_ERROR);
}
#ifndef NX_DISABLE_IPV4
/* Check for a valid server IP address if the server_ip is version IPv4. */
if (server_ip -> nxd_ip_version == NX_IP_VERSION_V4)
{
if (((server_ip -> nxd_ip_address.v4 & NX_IP_CLASS_A_MASK) != NX_IP_CLASS_A_TYPE) &&
((server_ip -> nxd_ip_address.v4 & NX_IP_CLASS_B_MASK) != NX_IP_CLASS_B_TYPE) &&
((server_ip -> nxd_ip_address.v4 & NX_IP_CLASS_C_MASK) != NX_IP_CLASS_C_TYPE))
{
return(NX_IP_ADDRESS_ERROR);
}
}
#endif /* !NX_DISABLE_IPV4 */
/* Check for an invalid port. */
if (((ULONG)server_port) > (ULONG)NX_MAX_PORT)
{
return(NX_INVALID_PORT);
}
/* Check for appropriate caller. */
NX_THREADS_ONLY_CALLER_CHECKING
/* Call actual TCP client socket connect function. */
status = _nxd_tcp_client_socket_connect(socket_ptr, server_ip, server_port, wait_option);
/* Return completion status. */
return(status);
}
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