HTTP send errno -1163019603

[isurki]

Dear Community;

I am using this code provided by a Nordic engineer to make some HTTP request in order to use Telegram Bot API. It works fine but after 1-2 days working I am getting an error at this part of the code: 

int num_bytes = send(client_fd, send_buf, send_data_len, 0);
if (num_bytes < 0) {
	printk("send errno: %d\n", errno);
	goto clean_up;
}

This is the error: "send errno: -1163019603"

The problem is that after first time this happens never recovers its normal functionality.

What is causing this error? How can be solved?

Any idea or suggestion is welcomed. Thanks.

[isurki]

Hello,

One week ago Telegram Bot API updated the minimum TLS version to 1.2. For the code you gave me, I understand that I am using 1.2v TLS version, so should work fine:

int client_fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TLS_1_2);

Can anyone confirm that the version of TLS is 1.2?

However, do you have any intention to include TLS 1.3v that was released in 2018?

Thanks a lot.