Remove using_mbedtls folder and move its content to the parent folder (#717)

Move the contents of FreeRTOS/FreeRTOS-Plus/Source/Application-Protocols/network_transport/using_mbedtls/
to its parent folder i.e. FreeRTOS/FreeRTOS-Plus/Source/Application-Protocols/network_transport/.
This removes one unnecessary folder in the hierarchy.
This commit is contained in:
andysun2015 2021-11-19 05:23:41 +08:00 committed by GitHub
parent 575acb8a1a
commit 426ad44c05
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48 changed files with 179 additions and 157 deletions

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/*
* FreeRTOS V202111.00
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
*/
/**
* @file using_wolfSSL.c
* @brief TLS transport interface implementations. This implementation uses
* wolfSSL.
*/
/* Standard includes. */
#include <string.h>
/* FreeRTOS includes. */
#include "FreeRTOS.h"
/* FreeRTOS+TCP includes. */
#include "FreeRTOS_IP.h"
#include "FreeRTOS_Sockets.h"
/* TLS transport header. */
#include "using_wolfSSL.h"
/* FreeRTOS Socket wrapper include. */
#include "sockets_wrapper.h"
/* wolfSSL user settings header */
#include "user_settings.h"
/* Demo Specific configs. */
#include "demo_config.h"
/**
* @brief Initialize the TLS structures in a network connection.
*
* @param[in] pSslContext The SSL context to initialize.
*/
static void sslContextInit( SSLContext_t * pSslContext );
/**
* @brief Free the TLS structures in a network connection.
*
* @param[in] pSslContext The SSL context to free.
*/
static void sslContextFree( SSLContext_t * pSslContext );
/**
* @brief Set up TLS on a TCP connection.
*
* @param[in] pNetworkContext Network context.
* @param[in] pHostName Remote host name, used for server name indication.
* @param[in] pNetworkCredentials TLS setup parameters.
*
* @return #TLS_TRANSPORT_SUCCESS, #TLS_TRANSPORT_INSUFFICIENT_MEMORY, #TLS_TRANSPORT_INVALID_CREDENTIALS,
* #TLS_TRANSPORT_HANDSHAKE_FAILED, or #TLS_TRANSPORT_INTERNAL_ERROR.
*/
static TlsTransportStatus_t tlsSetup( NetworkContext_t * pNetworkContext,
const char * pHostName,
const NetworkCredentials_t * pNetworkCredentials );
/**
* @brief Initialize TLS component.
*
* @return #TLS_TRANSPORT_SUCCESS, #TLS_TRANSPORT_INSUFFICIENT_MEMORY, or #TLS_TRANSPORT_INTERNAL_ERROR.
*/
static TlsTransportStatus_t initTLS( void );
/*
* @brief Receive date from the socket passed as the context
*
* @param[in] ssl WOLFSSL object.
* @param[in] buf Buffer for received data
* @param[in] sz Size to receive
* @param[in] context Socket to be received from
*
* @return received size( > 0 ), #WOLFSSL_CBIO_ERR_CONN_CLOSE, #WOLFSSL_CBIO_ERR_WANT_READ.
*/
static int wolfSSL_IORecvGlue( WOLFSSL * ssl,
char * buf,
int sz,
void * context );
/*
* @brief Send date to the socket passed as the context
*
* @param[in] ssl WOLFSSL object.
* @param[in] buf Buffer for data to be sent
* @param[in] sz Size to send
* @param[in] context Socket to be sent to
*
* @return received size( > 0 ), #WOLFSSL_CBIO_ERR_CONN_CLOSE, #WOLFSSL_CBIO_ERR_WANT_WRITE.
*/
static int wolfSSL_IOSendGlue( WOLFSSL * ssl,
char * buf,
int sz,
void * context );
/*
* @brief Load credentials from file/buffer
*
* @param[in] pNetCtx NetworkContext_t
* @param[in] pNetCred NetworkCredentials_t
*
* @return #TLS_TRANSPORT_SUCCESS, #TLS_TRANSPORT_INVALID_CREDENTIALS.
*/
static TlsTransportStatus_t loadCredentials( NetworkContext_t * pNetCtx,
const NetworkCredentials_t * pNetCred );
/*-----------------------------------------------------------*/
static int wolfSSL_IORecvGlue( WOLFSSL * ssl,
char * buf,
int sz,
void * context )
{
( void ) ssl; /* to prevent unused warning*/
BaseType_t read = 0;
Socket_t xSocket = ( Socket_t ) context;
read = FreeRTOS_recv( xSocket, ( void * ) buf, ( size_t ) sz, 0 );
if( ( read == 0 ) ||
( read == -pdFREERTOS_ERRNO_EWOULDBLOCK ) )
{
read = WOLFSSL_CBIO_ERR_WANT_READ;
}
else if( read == -pdFREERTOS_ERRNO_ENOTCONN )
{
read = WOLFSSL_CBIO_ERR_CONN_CLOSE;
}
else
{
/* do nothing */
}
return ( int ) read;
}
/*-----------------------------------------------------------*/
static int wolfSSL_IOSendGlue( WOLFSSL * ssl,
char * buf,
int sz,
void * context )
{
( void ) ssl; /* to prevent unused warning*/
Socket_t xSocket = ( Socket_t ) context;
BaseType_t sent = FreeRTOS_send( xSocket, ( void * ) buf, ( size_t ) sz, 0 );
if( sent == -pdFREERTOS_ERRNO_EWOULDBLOCK )
{
sent = WOLFSSL_CBIO_ERR_WANT_WRITE;
}
else if( sent == -pdFREERTOS_ERRNO_ENOTCONN )
{
sent = WOLFSSL_CBIO_ERR_CONN_CLOSE;
}
else
{
/* do nothing */
}
return ( int ) sent;
}
/*-----------------------------------------------------------*/
static TlsTransportStatus_t initTLS( void )
{
/* initialize wolfSSL */
wolfSSL_Init();
#ifdef DEBUG_WOLFSSL
wolfSSL_Debugging_ON();
#endif
return TLS_TRANSPORT_SUCCESS;
}
/*-----------------------------------------------------------*/
static TlsTransportStatus_t loadCredentials( NetworkContext_t * pNetCtx,
const NetworkCredentials_t * pNetCred )
{
TlsTransportStatus_t returnStatus = TLS_TRANSPORT_SUCCESS;
configASSERT( pNetCtx != NULL );
configASSERT( pNetCred != NULL );
#if defined( democonfigCREDENTIALS_IN_BUFFER )
if( wolfSSL_CTX_load_verify_buffer( pNetCtx->sslContext.ctx,
( const byte * ) ( pNetCred->pRootCa ), ( long ) ( pNetCred->rootCaSize ),
SSL_FILETYPE_PEM ) == SSL_SUCCESS )
{
if( wolfSSL_CTX_use_certificate_buffer( pNetCtx->sslContext.ctx,
( const byte * ) ( pNetCred->pClientCert ), ( long ) ( pNetCred->clientCertSize ),
SSL_FILETYPE_PEM ) == SSL_SUCCESS )
{
if( wolfSSL_CTX_use_PrivateKey_buffer( pNetCtx->sslContext.ctx,
( const byte * ) ( pNetCred->pPrivateKey ), ( long ) ( pNetCred->privateKeySize ),
SSL_FILETYPE_PEM ) == SSL_SUCCESS )
{
returnStatus = TLS_TRANSPORT_SUCCESS;
}
else
{
LogError( ( "Failed to load client-private-key from buffer" ) );
returnStatus = TLS_TRANSPORT_INVALID_CREDENTIALS;
}
}
else
{
LogError( ( "Failed to load client-certificate from buffer" ) );
returnStatus = TLS_TRANSPORT_INVALID_CREDENTIALS;
}
}
else
{
LogError( ( "Failed to load ca-certificate from buffer" ) );
returnStatus = TLS_TRANSPORT_INVALID_CREDENTIALS;
}
return returnStatus;
#else /* if defined( democonfigCREDENTIALS_IN_BUFFER ) */
if( wolfSSL_CTX_load_verify_locations( pNetCtx->sslContext.ctx,
( const char * ) ( pNetCred->pRootCa ), NULL ) == SSL_SUCCESS )
{
if( wolfSSL_CTX_use_certificate_file( pNetCtx->sslContext.ctx,
( const char * ) ( pNetCred->pClientCert ), SSL_FILETYPE_PEM )
== SSL_SUCCESS )
{
if( wolfSSL_CTX_use_PrivateKey_file( pNetCtx->sslContext.ctx,
( const char * ) ( pNetCred->pPrivateKey ), SSL_FILETYPE_PEM )
== SSL_SUCCESS )
{
returnStatus = TLS_TRANSPORT_SUCCESS;
}
else
{
LogError( ( "Failed to load client-private-key file" ) );
returnStatus = TLS_TRANSPORT_INVALID_CREDENTIALS;
}
}
else
{
LogError( ( "Failed to load client-certificate file" ) );
returnStatus = TLS_TRANSPORT_INVALID_CREDENTIALS;
}
}
else
{
LogError( ( "Failed to load ca-certificate file" ) );
returnStatus = TLS_TRANSPORT_INVALID_CREDENTIALS;
}
return returnStatus;
#endif /* if defined( democonfigCREDENTIALS_IN_BUFFER ) */
}
/*-----------------------------------------------------------*/
static TlsTransportStatus_t tlsSetup( NetworkContext_t * pNetCtx,
const char * pHostName,
const NetworkCredentials_t * pNetCred )
{
TlsTransportStatus_t returnStatus = TLS_TRANSPORT_SUCCESS;
Socket_t xSocket = { 0 };
configASSERT( pNetCtx != NULL );
configASSERT( pHostName != NULL );
configASSERT( pNetCred != NULL );
configASSERT( pNetCred->pRootCa != NULL );
configASSERT( pNetCtx->tcpSocket != NULL );
if( pNetCtx->sslContext.ctx == NULL )
{
/* Attempt to create a context that uses the TLS 1.3 or 1.2 */
pNetCtx->sslContext.ctx =
wolfSSL_CTX_new( wolfSSLv23_client_method_ex( NULL ) );
}
if( pNetCtx->sslContext.ctx != NULL )
{
/* load credentials from file */
if( loadCredentials( pNetCtx, pNetCred ) == TLS_TRANSPORT_SUCCESS )
{
/* create a ssl object */
pNetCtx->sslContext.ssl =
wolfSSL_new( pNetCtx->sslContext.ctx );
if( pNetCtx->sslContext.ssl != NULL )
{
xSocket = pNetCtx->tcpSocket;
/* set Recv/Send glue functions to the WOLFSSL object */
wolfSSL_SSLSetIORecv( pNetCtx->sslContext.ssl,
wolfSSL_IORecvGlue );
wolfSSL_SSLSetIOSend( pNetCtx->sslContext.ssl,
wolfSSL_IOSendGlue );
/* set socket as a context of read/send glue funcs */
wolfSSL_SetIOReadCtx( pNetCtx->sslContext.ssl, xSocket );
wolfSSL_SetIOWriteCtx( pNetCtx->sslContext.ssl, xSocket );
/* let wolfSSL perform tls handshake */
if( wolfSSL_connect( pNetCtx->sslContext.ssl )
== SSL_SUCCESS )
{
returnStatus = TLS_TRANSPORT_SUCCESS;
}
else
{
wolfSSL_shutdown( pNetCtx->sslContext.ssl );
wolfSSL_free( pNetCtx->sslContext.ssl );
pNetCtx->sslContext.ssl = NULL;
wolfSSL_CTX_free( pNetCtx->sslContext.ctx );
pNetCtx->sslContext.ctx = NULL;
LogError( ( "Failed to establish a TLS connection" ) );
returnStatus = TLS_TRANSPORT_HANDSHAKE_FAILED;
}
}
else
{
wolfSSL_CTX_free( pNetCtx->sslContext.ctx );
pNetCtx->sslContext.ctx = NULL;
LogError( ( "Failed to create wolfSSL object" ) );
returnStatus = TLS_TRANSPORT_INTERNAL_ERROR;
}
}
else
{
wolfSSL_CTX_free( pNetCtx->sslContext.ctx );
pNetCtx->sslContext.ctx = NULL;
LogError( ( "Failed to load credentials" ) );
returnStatus = TLS_TRANSPORT_INVALID_CREDENTIALS;
}
}
else
{
LogError( ( "Failed to create a wolfSSL_CTX" ) );
returnStatus = TLS_TRANSPORT_CONNECT_FAILURE;
}
return returnStatus;
}
/*-----------------------------------------------------------*/
/*-----------------------------------------------------------*/
TlsTransportStatus_t TLS_FreeRTOS_Connect( NetworkContext_t * pNetworkContext,
const char * pHostName,
uint16_t port,
const NetworkCredentials_t * pNetworkCredentials,
uint32_t receiveTimeoutMs,
uint32_t sendTimeoutMs )
{
TlsTransportStatus_t returnStatus = TLS_TRANSPORT_SUCCESS;
BaseType_t socketStatus = 0;
if( ( pNetworkContext == NULL ) ||
( pHostName == NULL ) ||
( pNetworkCredentials == NULL ) )
{
LogError( ( "Invalid input parameter(s): Arguments cannot be NULL. pNetworkContext=%p, "
"pHostName=%p, pNetworkCredentials=%p.",
pNetworkContext,
pHostName,
pNetworkCredentials ) );
returnStatus = TLS_TRANSPORT_INVALID_PARAMETER;
}
else if( ( pNetworkCredentials->pRootCa == NULL ) )
{
LogError( ( "pRootCa cannot be NULL." ) );
returnStatus = TLS_TRANSPORT_INVALID_PARAMETER;
}
/* Establish a TCP connection with the server. */
if( returnStatus == TLS_TRANSPORT_SUCCESS )
{
socketStatus = Sockets_Connect( &( pNetworkContext->tcpSocket ),
pHostName,
port,
receiveTimeoutMs,
sendTimeoutMs );
if( socketStatus != 0 )
{
LogError( ( "Failed to connect to %s with error %d.",
pHostName,
socketStatus ) );
returnStatus = TLS_TRANSPORT_CONNECT_FAILURE;
}
}
/* Initialize tls. */
if( returnStatus == TLS_TRANSPORT_SUCCESS )
{
returnStatus = initTLS();
}
/* Perform TLS handshake. */
if( returnStatus == TLS_TRANSPORT_SUCCESS )
{
returnStatus = tlsSetup( pNetworkContext, pHostName, pNetworkCredentials );
}
/* Clean up on failure. */
if( returnStatus != TLS_TRANSPORT_SUCCESS )
{
if( pNetworkContext->tcpSocket != FREERTOS_INVALID_SOCKET )
{
FreeRTOS_closesocket( pNetworkContext->tcpSocket );
}
}
else
{
LogInfo( ( "(Network connection %p) Connection to %s established.",
pNetworkContext,
pHostName ) );
}
return returnStatus;
}
/*-----------------------------------------------------------*/
void TLS_FreeRTOS_Disconnect( NetworkContext_t * pNetworkContext )
{
WOLFSSL * pSsl = pNetworkContext->sslContext.ssl;
WOLFSSL_CTX * pCtx = NULL;
/* shutdown an active TLS connection */
wolfSSL_shutdown( pSsl );
/* cleanup WOLFSSL object */
wolfSSL_free( pSsl );
pNetworkContext->sslContext.ssl = NULL;
/* Call socket shutdown function to close connection. */
Sockets_Disconnect( pNetworkContext->tcpSocket );
/* free WOLFSSL_CTX object*/
pCtx = pNetworkContext->sslContext.ctx;
wolfSSL_CTX_free( pCtx );
pNetworkContext->sslContext.ctx = NULL;
wolfSSL_Cleanup();
}
/*-----------------------------------------------------------*/
int32_t TLS_FreeRTOS_recv( NetworkContext_t * pNetworkContext,
void * pBuffer,
size_t bytesToRecv )
{
int32_t tlsStatus = 0;
int iResult = 0;
WOLFSSL * pSsl = pNetworkContext->sslContext.ssl;
iResult = wolfSSL_read( pSsl, pBuffer, bytesToRecv );
if( iResult > 0 )
{
tlsStatus = iResult;
}
else if( wolfSSL_want_read( pSsl ) == 1 )
{
tlsStatus = 0;
}
else
{
tlsStatus = wolfSSL_state( pSsl );
LogError( ( "Error from wolfSSL_read %d : %s ",
iResult, wolfSSL_ERR_reason_error_string( tlsStatus ) ) );
}
return tlsStatus;
}
/*-----------------------------------------------------------*/
int32_t TLS_FreeRTOS_send( NetworkContext_t * pNetworkContext,
const void * pBuffer,
size_t bytesToSend )
{
int32_t tlsStatus = 0;
int iResult = 0;
WOLFSSL * pSsl = pNetworkContext->sslContext.ssl;
iResult = wolfSSL_write( pSsl, pBuffer, bytesToSend );
if( iResult > 0 )
{
tlsStatus = iResult;
}
else if( wolfSSL_want_write( pSsl ) == 1 )
{
tlsStatus = 0;
}
else
{
tlsStatus = wolfSSL_state( pSsl );
LogError( ( "Error from wolfSL_write %d : %s ",
iResult, wolfSSL_ERR_reason_error_string( tlsStatus ) ) );
}
return tlsStatus;
}
/*-----------------------------------------------------------*/

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/*
* FreeRTOS V202111.00
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
*/
/**
* @file using_wolfSSL.h
* @brief TLS transport interface header.
*/
#ifndef USING_WOLFSSL_H
#define USING_WOLFSSL_H
/**************************************************/
/******* DO NOT CHANGE the following order ********/
/**************************************************/
/* Logging related header files are required to be included in the following order:
* 1. Include the header file "logging_levels.h".
* 2. Define LIBRARY_LOG_NAME and LIBRARY_LOG_LEVEL.
* 3. Include the header file "logging_stack.h".
*/
/* Include header that defines log levels. */
#include "logging_levels.h"
/* Logging configuration for the Sockets. */
#ifndef LIBRARY_LOG_NAME
#define LIBRARY_LOG_NAME "TlsTransport"
#endif
#ifndef LIBRARY_LOG_LEVEL
#define LIBRARY_LOG_LEVEL LOG_INFO
#endif
#include "logging_stack.h"
/************ End of logging configuration ****************/
/* FreeRTOS+TCP include. */
#include "FreeRTOS_Sockets.h"
/* Transport interface include. */
#include "transport_interface.h"
/* wolfSSL interface include. */
#include "wolfssl/ssl.h"
/**
* @brief Secured connection context.
*/
typedef struct SSLContext
{
WOLFSSL_CTX* ctx; /**< @brief wolfSSL context */
WOLFSSL* ssl; /**< @brief wolfSSL ssl session context */
} SSLContext_t;
/**
* @brief Definition of the network context for the transport interface
* implementation that uses mbedTLS and FreeRTOS+TLS sockets.
*/
struct NetworkContext
{
Socket_t tcpSocket;
SSLContext_t sslContext;
};
/**
* @brief Contains the credentials necessary for tls connection setup.
*/
typedef struct NetworkCredentials
{
/**
* @brief Set this to a non-NULL value to use ALPN.
*
* This string must be NULL-terminated.
*
* See [this link]
* (https://aws.amazon.com/blogs/iot/mqtt-with-tls-client-authentication-on-port-443-why-it-is-useful-and-how-it-works/)
* for more information.
*/
const char * pAlpnProtos;
/**
* @brief Disable server name indication (SNI) for a TLS session.
*/
BaseType_t disableSni;
const unsigned char * pRootCa; /**< @brief String representing a trusted server root certificate. */
size_t rootCaSize; /**< @brief Size associated with #IotNetworkCredentials.pRootCa. */
const unsigned char * pClientCert; /**< @brief String representing the client certificate. */
size_t clientCertSize; /**< @brief Size associated with #IotNetworkCredentials.pClientCert. */
const unsigned char * pPrivateKey; /**< @brief String representing the client certificate's private key. */
size_t privateKeySize; /**< @brief Size associated with #IotNetworkCredentials.pPrivateKey. */
const unsigned char * pUserName; /**< @brief String representing the username for MQTT. */
size_t userNameSize; /**< @brief Size associated with #IotNetworkCredentials.pUserName. */
const unsigned char * pPassword; /**< @brief String representing the password for MQTT. */
size_t passwordSize; /**< @brief Size associated with #IotNetworkCredentials.pPassword. */
} NetworkCredentials_t;
/**
* @brief TLS Connect / Disconnect return status.
*/
typedef enum TlsTransportStatus
{
TLS_TRANSPORT_SUCCESS = 0, /**< Function successfully completed. */
TLS_TRANSPORT_INVALID_PARAMETER, /**< At least one parameter was invalid. */
TLS_TRANSPORT_INSUFFICIENT_MEMORY, /**< Insufficient memory required to establish connection. */
TLS_TRANSPORT_INVALID_CREDENTIALS, /**< Provided credentials were invalid. */
TLS_TRANSPORT_HANDSHAKE_FAILED, /**< Performing TLS handshake with server failed. */
TLS_TRANSPORT_INTERNAL_ERROR, /**< A call to a system API resulted in an internal error. */
TLS_TRANSPORT_CONNECT_FAILURE /**< Initial connection to the server failed. */
} TlsTransportStatus_t;
/**
* @brief Create a TLS connection with FreeRTOS sockets.
*
* @param[out] pNetworkContext Pointer to a network context to contain the
* initialized socket handle.
* @param[in] pHostName The hostname of the remote endpoint.
* @param[in] port The destination port.
* @param[in] pNetworkCredentials Credentials for the TLS connection.
* @param[in] receiveTimeoutMs Receive socket timeout.
* @param[in] sendTimeoutMs Send socket timeout.
*
* @return #TLS_TRANSPORT_SUCCESS, #TLS_TRANSPORT_INSUFFICIENT_MEMORY, #TLS_TRANSPORT_INVALID_CREDENTIALS,
* #TLS_TRANSPORT_HANDSHAKE_FAILED, #TLS_TRANSPORT_INTERNAL_ERROR, or #TLS_TRANSPORT_CONNECT_FAILURE.
*/
TlsTransportStatus_t TLS_FreeRTOS_Connect( NetworkContext_t * pNetworkContext,
const char * pHostName,
uint16_t port,
const NetworkCredentials_t * pNetworkCredentials,
uint32_t receiveTimeoutMs,
uint32_t sendTimeoutMs );
/**
* @brief Gracefully disconnect an established TLS connection.
*
* @param[in] pNetworkContext Network context.
*/
void TLS_FreeRTOS_Disconnect( NetworkContext_t * pNetworkContext );
/**
* @brief Receives data from an established TLS connection.
*
* This is the TLS version of the transport interface's
* #TransportRecv_t function.
*
* @param[in] pNetworkContext The Network context.
* @param[out] pBuffer Buffer to receive bytes into.
* @param[in] bytesToRecv Number of bytes to receive from the network.
*
* @return Number of bytes (> 0) received if successful;
* 0 if the socket times out without reading any bytes;
* negative value on error.
*/
int32_t TLS_FreeRTOS_recv( NetworkContext_t * pNetworkContext,
void * pBuffer,
size_t bytesToRecv );
/**
* @brief Sends data over an established TLS connection.
*
* This is the TLS version of the transport interface's
* #TransportSend_t function.
*
* @param[in] pNetworkContext The network context.
* @param[in] pBuffer Buffer containing the bytes to send.
* @param[in] bytesToSend Number of bytes to send from the buffer.
*
* @return Number of bytes (> 0) sent on success;
* 0 if the socket times out without sending any bytes;
* else a negative value to represent error.
*/
int32_t TLS_FreeRTOS_send( NetworkContext_t * pNetworkContext,
const void * pBuffer,
size_t bytesToSend );
#endif /* ifndef USING_WOLFSSL_H */