[Bug]: ERROR -308: failed to connect to wolfSSL -1 about wolfssl

[1756816846]

[1756816846]

[kareem-wolfssl]

Hi @1756816846 ,

Do you have anything else open on port 21152?
Please rebuild wolfSSL with --enable-debug, run wolfSSL_Debugging_ON() at the start of your program and attach debug logs here.

[1756816846]

你好@1756816846,

您在端口 21152 上还有其他开放的东西吗？ 请使用--enable-debug重建wolfSSL，在程序开始时运行wolfSSL_Debugging_ON()并在此处附加调试日志。

─# ./demo 172.16.0.107
wolfSSL Entering TLSv1_2_client_method_ex
wolfSSL Entering wolfSSL_CTX_new_ex
wolfSSL Entering wolfSSL_CertManagerNew
wolfSSL Leaving WOLFSSL_CTX_new, return 0
wolfSSL Entering wolfSSL_CTX_set_verify
wolfSSL Entering SSL_new
wolfSSL Leaving SSL_new, return 0
wolfSSL Entering SSL_set_fd
wolfSSL Entering SSL_set_read_fd
wolfSSL Leaving SSL_set_read_fd, return 1
wolfSSL Entering SSL_set_write_fd
wolfSSL Leaving SSL_set_write_fd, return 1
wolfSSL Entering SSL_connect()
wolfSSL Entering SendClientHello
Adding signature algorithms extension
growing output buffer
Signature Algorithms extension to write
Point Formats extension to write
Supported Groups extension to write
Encrypt-Then-Mac extension to write
EMS extension to write
Your IO Send callback is null, please set
wolfSSL Leaving SendClientHello, return -308
wolfSSL error occurred, error = -308
wolfSSL Entering SSL_get_error
wolfSSL Leaving SSL_get_error, return -308
ERROR -308: failed to connect to wolfSSL -1
wolfSSL Entering SSL_free
Free'ing client ssl
Shrinking output buffer
wolfSSL Entering ClientSessionToSession
CTX ref count not 0 yet, no free
wolfSSL Leaving SSL_free, return 0
wolfSSL Entering SSL_CTX_free
CTX ref count down to 0, doing full free
wolfSSL Entering wolfSSL_CertManagerFree
wolfSSL Leaving SSL_CTX_free, return 0
wolfSSL Entering wolfSSL_Cleanup
wolfSSL Entering wolfCrypt_Cleanup

[kareem-wolfssl]

Your IO Send callback is null, please set
You need to set an IO send callback using wolfSSL_SetIOSend. Check out our example here: https://github.com/wolfSSL/wolfssl-examples/blob/master/tls/client-tls-callback.c

[1756816846]

Error: failed to connect

Still not working, I used the demo you sent and added/* Set the socket options to use nonblocking I/O*/

If (fcntl (sockfd, F_SETFL, O-NONBLOCK)==-1){

Fprintf (stderr, "Error: failed to set non blocking \ n");

Ret=-1;

Goto exit;

}

[1756816846]

I have succeeded now