CC3235SF: HTTPS communication

Koichiro Tashiro

Part Number: CC3235SF

Hi,

My customer is evaluating CC3235SF launchPad. He uses httpget_CC3235SF_LAUNCHXL_freertos_ticlang as an example.
Http communication works as expected and now he wants to try https communication.

Then he modified below parts in httpget sample code.
In httpget.c: "xxxxx" is the host name.

#define HOSTNAME              https://xxxxxxxxxx.execute-api.ap-northeast-1.amazonaws.com/test
#define REQUEST_URI           "/test?id=sample2"

In main_freertos.c: To avoid stack overflow.

/* Stack size in bytes */
#define THREADSTACKSIZE   4096

It does not work and below error is generated.

Error! code = -2006, Description = httpTask: connect failed

Could you tell me how to modify httpget example for https communication?

Thanks and regards,
Koichiro Tashiro

over 1 year ago

0 Shlomi Itzhak over 1 year ago

TI__Guru 65145 points

Hi,

You need to add security to the socket.

You can read in SL academy on secured sockets https://dev.ti.com/tirex/explore/node?node=A__AQiSeF5p.y8rbxkEtDRK3Q__SIMPLELINK-ACADEMY-CC32XX__-LLELo7__LATEST

In the SDK, check the HTTP Client Documentation (see <SDK>/docs/ns/html/group__ti__net__http__HTTPClient.html).

You will need to program the TLS certificates (server's root CA certificate and optionally client's private key and certificate chain) to the CC32xx file system. Then fill the HTTPClient_extSecParam structure as needed by HTTPClient_connect().

Regards,

Shlomi

0 Koichiro Tashiro over 1 year ago in reply to Shlomi Itzhak

TI__Mastermind 22945 points

Hi Shlomi,

The customer tried below modification and HTTPS worked.

1) Define HTTPClient_extSecParam and put 0 to each parameter.

HTTPClient_extSecParams secParams;
secParams.clientCert = 0;
secParams.privateKey = 0;
secParams.rootCa = 0;

2) Then execute HTTPClient_connect with below arguments.

ret = HTTPClient_connect(httpClientHandle,HOSTNAME,&secParams,0);

This item can be closed.

Thanks and regards,
Koichiro Tashiro

Wi-Fi

Wi-Fi forum

CC3235SF: HTTPS communication