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net/mqtt: Enable TLS support

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CONFIG_MQTT_LIB_TLS is introduced to enable TLS support.

Also, prj_frdm_k64f_tls.conf is added to demostrate the whole idea.

jira:ZEP-2261

Signed-off-by: Aska Wu <aska.wu@linaro.org>
This commit is contained in:
Aska Wu 2017-07-10 18:18:06 +08:00 • committed by Jukka Rissanen
commit c0b5e55e6d
7 changed files with 319 additions and 4 deletions
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22
include/net/mqtt.h
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@ -71,6 +71,28 @@ struct mqtt_ctx {
char *peer_addr_str;
u16_t peer_port;
#if defined(CONFIG_MQTT_LIB_TLS)
/** TLS parameters */
u8_t *request_buf;
size_t request_buf_len;
u8_t *personalization_data;
size_t personalization_data_len;
char *cert_host;
/** TLS thread parameters */
struct k_mem_pool *tls_mem_pool;
u8_t *tls_stack;
size_t tls_stack_size;
/** TLS callback */
net_app_ca_cert_cb_t cert_cb;
net_app_entropy_src_cb_t entropy_src_cb;
/** TLS handshake */
struct k_sem tls_hs_wait;
s32_t tls_hs_timeout;
#endif
/** Callback executed when a MQTT CONNACK msg is received and validated.
* If this function pointer is not used, must be set to NULL.
*/