devel@lists.zephyrproject.org | Can't download in chuncks using https

Home Messages Hashtags Subgroups

Date Date 1 - 2 of 2

Can't download in chuncks using https

christian tavares

I'm developing an http_client library, this library needs to download a flash image on the server and install the image on the card.

When I download the flash image from the server if it is larger than the request_buf of the http_client_set_tls function, an error occurs to save the encrypted packets on the stack. I would like to know if you have a way to download the larger image by checking the encryption in pieces?

I've been researching a lot how to solve this case, but I have not found a solution. I'll be grateful if anyone can find a solution. Below I am sending what happens.

[https/client] [DBG] on_status: (0x2000d1c4): HTTP response status OK

[https/client] [DBG] print_header_field: (0x2000d1c4): [12] X-Powered-By

[https/client] [DBG] print_header_field: (0x2000d1c4): [7] Express

[https/client] [DBG] print_header_field: (0x2000d1c4): [13] Accept-Ranges

[https/client] [DBG] print_header_field: (0x2000d1c4): [5] bytes

[https/client] [DBG] print_header_field: (0x2000d1c4): [13] Cache-Control

[https/client] [DBG] print_header_field: (0x2000d1c4): [17] public, max-age=0

[https/client] [DBG] print_header_field: (0x2000d1c4): [13] Last-Modified

[https/client] [DBG] print_header_field: (0x2000d1c4): [29] Thu, 08 Mar 2018 19:14:53 GMT

[https/client] [DBG] print_header_field: (0x2000d1c4): [4] ETag

[https/client] [DBG] print_header_field: (0x2000d1c4): [21] W/"60000-16207099be3"

[https/client] [DBG] print_header_field: (0x2000d1c4): [12] Content-Type

[https/client] [DBG] print_header_field: (0x2000d1c4): [24] application/octet-stream

[https/client] [DBG] print_header_field: (0x2000d1c4): [14] Content-Length

[https/client] [DBG] print_header_field: (0x2000d1c4): [6] 393216

[https/client] [DBG] print_header_field: (0x2000d1c4): [4] Date

[https/client] [DBG] print_header_field: (0x2000d1c4): [29] Tue, 08 May 2018 21:02:56 GMT

[https/client] [DBG] print_header_field: (0x2000d1c4): [10] Connection

[https/client] [DBG] print_header_field: (0x2000d1c4): [5] close

[https/client] [DBG] on_headers_complete: (0x2000d1c4): Headers complete

[net/app] [DBG] _net_app_tls_received: (0x2000be5c): Encrypted data received in pkt 0x2000f714

[net/app] [DBG] _net_app_ssl_mux: (0x2000d1c4): Receiving encrypted data in pkt 0x2000f714 (len 576)

[net/app] [DBG] my_debug: (0x2000d1c4): ssl_tls.c:3572: |1| bad message length

[net/app] [DBG] my_debug: (0x2000d1c4): ssl_tls.c:3783: |1| mbedtls_ssl_read_record_layer() returned -29184 (-0x7200)

[net/app] [DBG] my_debug: (0x2000d1c4): ssl_tls.c:6944: |1| mbedtls_ssl_read_record() returned -29184 (-0x7200)

[net/app] [ERR] _net_app_ssl_mainloop: mbedtls_ssl_read returned -0x7200 (SSL - An invalid SSL record was received)

[net/app] [ERR] _net_app_ssl_mainloop: Closing connection -0x7200 (SSL - An invalid SSL record was received)

[net/app] [ERR] tls_client_handler: TLS mainloop startup failed (-29184)

[net/app] [DBG] tls_client_handler: (0x2000d1c4): Shutting down TLS handler

[https/client] [DBG] http_closed: (0x2000d1c4): [0x2000d118] connection closed

[net/app] [DBG] _net_app_tls_handler_stop: (0x2000d1c4): TLS thread 0x2000d1c4 stopped

[net/app] [DBG] _net_app_tls_received: (0x2000be5c): Encrypted data received in pkt 0x2000f768

[net/app] [DBG] _net_app_tls_received: (0x2000be5c): Encrypted data received in pkt 0x2000f714

[net/app] [DBG] _net_app_tls_received: (0x2000be5c): Encrypted data received in pkt 0x2000f6c0

[net/app] [DBG] _net_app_tls_received: (0x2000be5c): Encrypted data received in pkt 0x2000f66c

[net/app] [DBG] _net_app_tls_received: (0x2000be5c): Encrypted data received in pkt 0x2000f618

[net/app] [DBG] _net_app_tls_received: (0x2000be5c): Encrypted data received in pkt 0x2000f5c4

[net/app] [DBG] _net_app_tls_received: (0x2000be5c): Encrypted data received in pkt 0x2000f570

[net/app] [DBG] _net_app_tls_received: (0x2000be5c): Encrypted data received in pkt 0x2000f51c

[net/app] [DBG] _net_app_tls_received: (0x2000be5c): Encrypted data received in pkt 0x2000f4c8

[net/app] [DBG] _net_app_tls_received: (0x2000be5c): Encrypted data received in pkt 0x2000f474

[net/app] [DBG] _net_app_tls_received: (0x2000be5c): Encrypted data received in pkt 0x2000f420

[net/app] [DBG] _net_app_tls_received: (0x2000be5c): Encrypted data received in pkt 0x2000f3cc

[net/app] [DBG] _net_app_tls_received: (0x2000be5c): Encrypted data received in pkt 0x2000f378

[net/app] [DBG] _net_app_tls_received: (0x2000be5c): Encrypted data received in pkt 0x2000f324

Here shows the size that defined the variables used by the functions:

RESULT_BUF_SIZE = MBEDTLS_SSL_MAX_CONTENT_LEN (1500)

#define HTTPS_STACK_SIZE (4096)

NET_STACK_DEFINE(HTTPS, https_stack, HTTPS_STACK_SIZE, HTTPS_STACK_SIZE);

NET_APP_TLS_POOL_DEFINE(ssl_pool, 10);

#define TCP_RECV_BUFFER_SIZE 1024

#define APP_TIMEOUT K_SECONDS(10)

static u8_t https_result_buf[RESULT_BUF_SIZE];

ret = http_client_init(&ctx->http_client.http_ctx,

UPDATEHUB_SERVER,

UPDATEHUB_PORT, NULL,

APP_TIMEOUT);

ret = http_client_set_tls(&ctx->http_client.http_ctx,

https_result_buf,

RESULT_BUF_SIZE,

NULL,

setup_cert,

NULL,

&ssl_pool,

https_stack,

HTTPS_STACK_SIZE);

ret = http_client_send_req(&ctx->http_client.http_ctx,

&ctx->http_client.req,

install_update_cb ,

ctx->http_client.tcp_buffer,

TCP_RECV_BUFFER_SIZE, ctx,

APP_TIMEOUT);

The install_update_cb function is responsible for downloading parts of the image and saving this image in flash area 1.

For a better view, I am sending the link from the library. The call occurs in function "updatehub_install_update"
https://github.com/OSSystems/zephyr/blob/master/subsys/updatehub/updatehub.c

christian tavares

#2169

I was able to resolve this problem by configuring the server to send smaller fragments than it was sending

1 - 2 of 2

Previous Topic Next Topic

Home Hashtags Subgroups Terms