STM32F4 + W5500 + TLS

Question

안녕하세요 TLS 을 참고로 포팅후 테스트중에 있습니다. 서버세팅에는 문제가 없는듯한데 계속 ssl->f_recv(_timeout)() returned 0 (-0x0000) 타임아웃이 되면서 TLS connect 가 하지를 못하네요. 어디가 문제인지 가늠을 못하겠습니다. config.h 와 스택사이즈를 조절하였음에도 현상은 동일합니다. [SOCKET]After getSn_CR() init connect ret = 1 sn = 0 . Performing the SSL/TLS handshake…=> handshake handshake: 536992008 client state: 0 => flush output <= flush output handshake: 536992008 client state: 1 => flush output <= flush output => write client hello client hello, max version: [3:3] dumping ‘client hello, random bytes’ (32 bytes) 0000: cb 4e 3e a4 39 a1 32 11 92 4f 3b d8 2e ae 01 02 .N>.9.2…O;… 0010: f7 9f 85 b8 f0 c8 18 e1 ab 10 e9 ce c9 47 60 cc …G`. client hello, session id len.: 0 dumping ‘client hello, session id’ (0 bytes) client hello, add ciphersuite: 009c client hello, add ciphersuite: 003d client hello, add ciphersuite: 009d client hello, add ciphersuite: c028 client hello, add ciphersuite: c013 client hello, add ciphersuite: c02f client hello, got 6 ciphersuites (excluding SCSVs) adding EMPTY_RENEGOTIATION_INFO_SCSV client hello, compress len.: 1 client hello, compress alg.: 0 client hello, adding signature_algorithms extension client hello, adding supported_elliptic_curves extension client hello, adding supported_point_formats extension client hello, total extension length: 56 => write record output record: msgtype = 22, version = [3:3], msglen = 115 => flush output message length: 120, out_left: 120 Port:[0]/Send(120) : ssl->f_send() returned 120 (-0xffffff88) <= flush output <= write record <= write client hello handshake: 536992008 client state: 2 => flush output <= flush output => parse server hello => read record => fetch input in_left: 0, nb_want: 5 SOCK_IO_MODE : 0x0000 Port:[0]/Recv(5)[0]: in_left: 0, nb_want: 5 ssl->f_recv(_timeout)() returned 0 (-0x0000) 22 line = 2431 mbedtls_ssl_fetch_input() returned -29312 (-0x7280) mbedtls_ssl_read_record_layer() returned -29312 (-0x7280) mbedtls_ssl_read_record() returned -29312 (-0x7280) <= handshake failed* ! mbedtls_ssl_handshake returned -29312: SSL - The connection indicated an EOF* ===== 서버에 등록한 인증서의 정보는 다음과 같습니다. New, TLSv1/SSLv3, Cipher is ECDHE-RSA-AES256-GCM-SHA384 Server public key is 2048 bit Secure Renegotiation IS supported Compression: NONE Expansion: NONE No ALPN negotiated SSL-Session: ** Protocol : TLSv1.2** ** Cipher : ECDHE-RSA-AES256-GCM-SHA384** ** Session-ID: 59D32182C1610C2E26C57ABC0D2F8A84E5FF52CF14196A58A5EC7CDF9229BA57** ** Session-ID-ctx:** ** Master-Key: 707C70A3EE9E14A5B4B582B2142BC44402BDBD3CCC8BDDF3AE88EACD5077ABB920F01C830C10BA598B240878FECCA82E** ** Key-Arg : None** ** PSK identity: None** ** PSK identity hint: None** ** SRP username: None** ** Start Time: 1620291535** ** Timeout : 300 (sec)** ** Verify return code: 20 (unable to get local issuer certificate)** —

juro2514 · Answer

타이밍 문제로 mbedtls_ssl_set_bio 에서 별도로 SSLRecvTimeOutCB 함수 작성후 해당 문제 하결하였습니다. 감사합니다.