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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_tcp.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nx_tcp_client_socket_port_get PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function retrieves the bound port of the specified socket, */
/* which is especially useful in situations where NX_ANY_PORT was */
/* used to bind. */
/* */
/* INPUT */
/* */
/* socket_ptr Pointer to TCP client socket */
/* port_ptr Destination for port bound to */
/* this socket */
/* */
/* OUTPUT */
/* */
/* status Completion status */
/* */
/* CALLS */
/* */
/* tx_mutex_get Obtain protection */
/* tx_mutex_put Release protection */
/* */
/* 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 _nx_tcp_client_socket_port_get(NX_TCP_SOCKET *socket_ptr, UINT *port_ptr)
{
NX_IP *ip_ptr;
/* Setup IP pointer. */
ip_ptr = socket_ptr -> nx_tcp_socket_ip_ptr;
/* If trace is enabled, insert this event into the trace buffer. */
NX_TRACE_IN_LINE_INSERT(NX_TRACE_TCP_CLIENT_SOCKET_PORT_GET, ip_ptr, socket_ptr, socket_ptr -> nx_tcp_socket_port, 0, NX_TRACE_TCP_EVENTS, 0, 0);
/* Obtain the IP mutex so we can examine the bound port. */
tx_mutex_get(&(ip_ptr -> nx_ip_protection), TX_WAIT_FOREVER);
/* Determine if the socket has already been bound to port or if a socket bind is
already pending from another thread. */
if (!socket_ptr -> nx_tcp_socket_bound_next)
{
/* Release protection. */
tx_mutex_put(&(ip_ptr -> nx_ip_protection));
/* Return a not bound error code. */
return(NX_NOT_BOUND);
}
/* Return the port number from the socket. */
*port_ptr = socket_ptr -> nx_tcp_socket_port;
/* Release protection. */
tx_mutex_put(&(ip_ptr -> nx_ip_protection));
/* Return successful completion status. */
return(NX_SUCCESS);
}
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