Failed to connect to server when query data from etherscan with client example in SGX_Linux.

[binwang-neu]

Hello, I'm trying to query data from server using the client example in SGX_Linux. But occurs a problem: Failed to connect to server.

I modified the client-tls.c file in three places:

1. #define SERV_PORT 80
2. char sendBuffer[] = "GET /api?module=account&action=balance&address=0xddbd2b932c763ba5b1b7ae3b362eac3e8d40121a&tag=latest&apikey=YourApiKeyToken";
3. if (net_pton(AF_INET, "23.111.175.138", &servAddr.sin_addr))

And the error code is -326
VERSION_ERROR = -326, /* record layer version error */

Is there some setting somewhere I'm missing?

[JacobBarthelmeh]

Hi @B-doublemint, the VERSION_ERROR is commonly related to either a mismatch of the TLS version itrying to be negotiated or some form of pre TLS info sent such as a StartTLS. The SGX example client is setting the TLS version to 1.2 by default with "enc_wolfTLSv1_2_client_method(id, &method);".

Does a GET command work with the non SGX bundled example client in wolfSSL?

cd wolfssl
./configure && make
./examples/client/client -p 80 -h 23.111.175.138 -v 3 -g

Regards,
Jacob