mbed tls NET 和 TIMING 模块不可用

Question

我已经为带有 ARM Mbed 的 K64F 板编译了 mbedtls OS。我正在尝试运行 dtls_client.c 和 dtls_server.c 中的示例。最初，在编译客户端时出现此错误：

"The NET and TIMING modules are not available for mbed OS - please use the network and timing functions provided by mbed OS"

我发现这与在 config.h 文件中激活这两行有关。

    #define MBEDTLS_NET_C
    #define MBEDTLS_TIMING_C

I commented them and the check that requires the values:

#if !defined(MBEDTLS_SSL_CLI_C) || !defined(MBEDTLS_SSL_PROTO_DTLS) ||    \
    !defined(MBEDTLS_NET_C)  || !defined(MBEDTLS_TIMING_C) ||             \
    !defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_CTR_DRBG_C) ||        \
    !defined(MBEDTLS_X509_CRT_PARSE_C) || !defined(MBEDTLS_RSA_C) ||      \
    !defined(MBEDTLS_CERTS_C) || !defined(MBEDTLS_PEM_PARSE_C)
int main( void )
{
    mbedtls_printf( "MBEDTLS_SSL_CLI_C and/or MBEDTLS_SSL_PROTO_DTLS and/or "
            "MBEDTLS_NET_C and/or MBEDTLS_TIMING_C and/or "
            "MBEDTLS_ENTROPY_C and/or MBEDTLS_CTR_DRBG_C and/or "
            "MBEDTLS_X509_CRT_PARSE_C and/or MBEDTLS_RSA_C and/or "
            "MBEDTLS_CERTS_C and/or MBEDTLS_PEM_PARSE_C not defined.\n" );
    return( 0 );
}

现在我看到我得到的编译错误与某些函数的重新定义有关：

main.cpp:(.text.startup.main+0x18): undefined reference to `mbedtls_net_init'
main.cpp:(.text.startup.main+0xce): undefined reference to `mbedtls_net_connect'
main.cpp:(.text.startup.main+0x2fc): undefined reference to `mbedtls_net_recv_timeout'
main.cpp:(.text.startup.main+0x300): undefined reference to `mbedtls_net_send'
main.cpp:(.text.startup.main+0x304): undefined reference to `mbedtls_net_recv'
main.cpp:(.text.startup.main+0x308): undefined reference to `mbedtls_timing_get_delay'
main.cpp:(.text.startup.main+0x30c): undefined reference to `mbedtls_timing_set_delay'
main.cpp:(.text.startup.main+0x35c): undefined reference to `mbedtls_net_free'

如何定义此调用以使其工作？

Answer 1

已在此处回答：https://tls.mbed.org/discussions/platform-specific/compiling-mbeddtls-on-k64f:

Hi Jordi,
dtls_client.c and dtls_server.c are sample applications that arrive as part of the mbed TLS git repository.
Note that mbed-OS arrives with its own mbed TLS feature directory. To test TLS feature, you can use the TLS client app and modify it to fit DTLS protocol, and also for server. You can also look at this example for reference how to configure your dtls client and server.
I hope this helps
mbed TLS Team member
Ron

mbed tls NET 和 TIMING 模块不可用

mbed tls NET and TIMING modules not available

arm

mbed

dtls

mbedtls