RT-Thread-使用mbedtls发送https请求的时候握手失败-0x7200RT-Thread问答社区

使用mbedtls发送https请求的时候握手失败-0x7200

发布于 2023-05-22 10:46:07 浏览：1722 订阅该版

https://club.rt-thread.org/ask/question/80a5dc127b0ccdda.html;
参考了之前的这个帖子，我用的是潘多拉的rtt板子，直接烧录的mbedtls官方例程，但是在编译的时候出现gettimeofday的错误，后续查了原因是没有更新板卡的时间，后面下载相应的软件包后得到解决。
但此时问题又出现了，握手的时候出现了如下的错误：

![screenshot_1684722729367.png](https://oss-club.rt-thread.org/uploads/20230522/e131a27ba8f727f1562a4776f852cc1a.png.webp)
可以看到这里提示说CA证书匹配失败，并且下载的内容与实际网站上的不一致，最后输出的内容缺少了一部分；
这一步的时候我将官方的config.h文件做了优化：

```c
/* tls_config.h*/
#ifndef MBEDTLS_CONFIG_H
#define MBEDTLS_CONFIG_H
 
#include <rtthread.h>
 
#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_DEPRECATE)
#define _CRT_SECURE_NO_DEPRECATE 1
#endif
 
#define MBEDTLS_HAVE_ASM
#define MBEDTLS_HAVE_TIME
#define MBEDTLS_ASN1_PARSE_C
#define MBEDTLS_ASN1_WRITE_C
#define MBEDTLS_BIGNUM_C
#define MBEDTLS_CIPHER_C
#define MBEDTLS_AES_C
#define MBEDTLS_CTR_DRBG_C
// #define MBEDTLS_ECDH_C
// #define MBEDTLS_ECDSA_C
#define MBEDTLS_ECP_C
// #define MBEDTLS_GCM_C
#define MBEDTLS_MD_C
// #define MBEDTLS_NET_C
#define MBEDTLS_OID_C
#define MBEDTLS_PK_C
#define MBEDTLS_PK_PARSE_C
#define MBEDTLS_SHA256_C
// #define MBEDTLS_SHA512_C
#define MBEDTLS_SSL_CLI_C
// #define MBEDTLS_SSL_SRV_C
#define MBEDTLS_SSL_TLS_C
#define MBEDTLS_X509_CRT_PARSE_C
#define MBEDTLS_X509_USE_C
#define MBEDTLS_BASE64_C
// #define MBEDTLS_CERTS_C
#define MBEDTLS_PEM_PARSE_C
#define MBEDTLS_AES_ROM_TABLES
#define MBEDTLS_MPI_MAX_SIZE         384
#define MBEDTLS_MPI_WINDOW_SIZE        2
#define MBEDTLS_ECP_MAX_BITS         384
#define MBEDTLS_ECP_WINDOW_SIZE        2
#define MBEDTLS_ECP_FIXED_POINT_OPTIM  0
#define MBEDTLS_ECP_NIST_OPTIM
#define MBEDTLS_ENTROPY_MAX_SOURCES 2
#define MBEDTLS_SSL_CIPHERSUITES                        \
    MBEDTLS_TLS_RSA_WITH_AES_256_CBC_SHA256
 
// #define MBEDTLS_SSL_MAX_CONTENT_LEN             3584
#define MBEDTLS_NO_PLATFORM_ENTROPY
// #define MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_KEY_EXCHANGE
#define MBEDTLS_RSA_C
#define MBEDTLS_SHA1_C
#define MBEDTLS_TIMING_C
#define MBEDTLS_ENTROPY_HARDWARE_ALT
#define MBEDTLS_TIMING_ALT
// #define MBEDTLS_DEBUG_C
#define MBEDTLS_MD5_C
// #define MBEDTLS_HAVE_TIME_DATE
#define MBEDTLS_CIPHER_MODE_CBC
// #define MBEDTLS_CIPHER_MODE_CFB
// #define MBEDTLS_CIPHER_MODE_CTR
// #define MBEDTLS_CIPHER_PADDING_PKCS7
// #define MBEDTLS_CIPHER_PADDING_ONE_AND_ZEROS
// #define MBEDTLS_CIPHER_PADDING_ZEROS_AND_LEN
// #define MBEDTLS_CIPHER_PADDING_ZEROS
#define MBEDTLS_REMOVE_ARC4_CIPHERSUITES
// #define MBEDTLS_ECP_DP_SECP192R1_ENABLED
// #define MBEDTLS_ECP_DP_SECP224R1_ENABLED
#define MBEDTLS_ECP_DP_SECP256R1_ENABLED
#define MBEDTLS_ECP_DP_SECP384R1_ENABLED
// #define MBEDTLS_ECP_DP_SECP521R1_ENABLED
// #define MBEDTLS_ECP_DP_SECP192K1_ENABLED
// #define MBEDTLS_ECP_DP_SECP224K1_ENABLED
// #define MBEDTLS_ECP_DP_SECP256K1_ENABLED
// #define MBEDTLS_ECP_DP_BP256R1_ENABLED
// #define MBEDTLS_ECP_DP_BP384R1_ENABLED
// #define MBEDTLS_ECP_DP_BP512R1_ENABLED
// #define MBEDTLS_ECP_DP_CURVE25519_ENABLED
// #define MBEDTLS_ECDSA_DETERMINISTIC
// #define MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED
// #define MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED
// #define MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED
// #define MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED
// #define MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED
// #define MBEDTLS_KEY_EXCHANGE_PSK_ENABLED
// #define MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED
// #define MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED
// #define MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED
#define MBEDTLS_KEY_EXCHANGE_RSA_ENABLED
// #define MBEDTLS_PK_PARSE_EC_EXTENDED
// #define MBEDTLS_ERROR_STRERROR_DUMMY
// #define MBEDTLS_GENPRIME
// #define MBEDTLS_FS_IO
// #define MBEDTLS_PK_RSA_ALT_SUPPORT
// #define MBEDTLS_PKCS12_C
#define MBEDTLS_PKCS1_V15
// #define MBEDTLS_PKCS1_V21
// #define MBEDTLS_SELF_TEST
// #define MBEDTLS_SSL_ALL_ALERT_MESSAGES
// #define MBEDTLS_SSL_ENCRYPT_THEN_MAC
// #define MBEDTLS_SSL_EXTENDED_MASTER_SECRET
// #define MBEDTLS_SSL_FALLBACK_SCSV
// #define MBEDTLS_SSL_CBC_RECORD_SPLITTING
// #define MBEDTLS_SSL_RENEGOTIATION
// #define MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
// #define MBEDTLS_SSL_PROTO_TLS1
// #define MBEDTLS_SSL_PROTO_TLS1_1
#define MBEDTLS_SSL_PROTO_TLS1_2
// #define MBEDTLS_SSL_ALPN
// #define MBEDTLS_SSL_PROTO_DTLS
// #define MBEDTLS_SSL_DTLS_ANTI_REPLAY
// #define MBEDTLS_SSL_DTLS_HELLO_VERIFY
// #define MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE
// #define MBEDTLS_SSL_DTLS_BADMAC_LIMIT
// #define MBEDTLS_SSL_SESSION_TICKETS
// #define MBEDTLS_SSL_EXPORT_KEYS
// #define MBEDTLS_SSL_SERVER_NAME_INDICATION
// #define MBEDTLS_SSL_TRUNCATED_HMAC
// #define MBEDTLS_VERSION_FEATURES
// #define MBEDTLS_X509_CHECK_KEY_USAGE
// #define MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE
// #define MBEDTLS_X509_RSASSA_PSS_SUPPORT
// #define MBEDTLS_AESNI_C
// #define MBEDTLS_ARC4_C
// #define MBEDTLS_BLOWFISH_C
// #define MBEDTLS_CAMELLIA_C
// #define MBEDTLS_CCM_C
// #define MBEDTLS_DES_C
// #define MBEDTLS_DHM_C
#define MBEDTLS_ENTROPY_C
// #define MBEDTLS_ERROR_C
// #define MBEDTLS_HMAC_DRBG_C
// #define MBEDTLS_PADLOCK_C
// #define MBEDTLS_PEM_WRITE_C
// #define MBEDTLS_PK_WRITE_C
// #define MBEDTLS_PKCS5_C
#define MBEDTLS_PLATFORM_C
// #define MBEDTLS_RIPEMD160_C
// #define MBEDTLS_SSL_CACHE_C
// #define MBEDTLS_SSL_COOKIE_C
// #define MBEDTLS_SSL_TICKET_C
// #define MBEDTLS_VERSION_C   
// #define MBEDTLS_X509_CRL_PARSE_C
// #define MBEDTLS_X509_CSR_PARSE_C
// #define MBEDTLS_X509_CREATE_C
// #define MBEDTLS_X509_CRT_WRITE_C   
// #define MBEDTLS_X509_CSR_WRITE_C   
// #define MBEDTLS_XTEA_C
 
#if defined(YOTTA_CFG_MBEDTLS_USER_CONFIG_FILE)
#include YOTTA_CFG_MBEDTLS_USER_CONFIG_FILE
#elif defined(MBEDTLS_USER_CONFIG_FILE)
#include MBEDTLS_USER_CONFIG_FILE
#endif
 
#include "mbedtls/check_config.h"
 
#define tls_malloc  rt_malloc
#define tls_free    rt_free
#define tls_realloc rt_realloc
#define tls_calloc  rt_calloc
#define tls_strdup  rt_strdup
 
#endif /* MBEDTLS_CONFIG_H */
```
https://www.rt-thread.org/download/rt-thread.txt 这个是对接的网站；

此时我将MBEDTLS_SSL_MAX_CONTENT_LEN的值从3584增加到6144后反而出现了新的问题：

![screenshot_1.2.png](https://oss-club.rt-thread.org/uploads/20230522/35f6c4cee523eb311793beb1fd9dce48.png)
难道这个变量值不能一味的增大吗？

那就按照直接能够连接成功的3584继续调试其他网站，我想的是获取知心天气上的相关天气信息，然后我就只在例程中更改了连接的网站，出现了以下问题：

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230522/41c12fce4a6003a3f52d6aa903eb8f13.png)
增大MBEDTLS_SSL_MAX_CONTENT_LEN至6144还是一样的错误，继续增大至10000，然后又出现了以下问题：

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230522/3ff13cca3b1f812f9e84090d17a43085.png)
实在是不知道怎么修改mbedtls的参数了，希望有大佬给解决一下，是不是更换网站之后也得把相应网站的证书导入进去，但是我看网上其他博主更换网站的时候都没有导入证书这一步，希望大佬们能够指点指点!