OVMS3/OVMS.V3/components/wolfssl/examples/sctp/sctp-client-dtls.c

130 lines
3.4 KiB
C

/* sctp-client-dtls.c
*
* Copyright (C) 2006-2020 wolfSSL Inc.
*
* This file is part of wolfSSL.
*
* wolfSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* wolfSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*/
/* wolfssl */
#ifndef WOLFSSL_USER_SETTINGS
#include <wolfssl/options.h>
#endif
#include <wolfssl/wolfcrypt/settings.h>
#include <wolfssl/ssl.h>
#if defined(WOLFSSL_SCTP) && defined(WOLFSSL_DTLS)
/* sctp */
#include <sys/socket.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <netinet/in.h>
/* std */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define cacert "./certs/ca-cert.pem"
static int err_sys(const char* msg)
{
perror(msg);
exit(EXIT_FAILURE);
}
#endif /* WOLFSSL_SCTP && WOLFSSL_DTLS */
int main()
{
#if defined(WOLFSSL_SCTP) && defined(WOLFSSL_DTLS)
int sd = socket(PF_INET, SOCK_STREAM, IPPROTO_SCTP);
if (sd < 0)
err_sys("sctp socket error");
struct sockaddr_in sa;
memset(&sa, 0, sizeof(sa));
sa.sin_family = AF_INET;
sa.sin_addr.s_addr = inet_addr("127.0.0.1");
sa.sin_port = htons(12345);
int ret = connect(sd, (struct sockaddr*)&sa, sizeof(sa));
if (ret < 0)
err_sys("sctp connect error");
const char* response = "hello there";
char buffer[80];
WOLFSSL_CTX* ctx = wolfSSL_CTX_new(wolfDTLSv1_2_client_method());
if (ctx == NULL)
err_sys("ctx new dtls client failed");
ret = wolfSSL_CTX_dtls_set_sctp(ctx);
if (ret != WOLFSSL_SUCCESS)
err_sys("set sctp mode failed");
ret = wolfSSL_CTX_load_verify_locations(ctx, cacert, NULL);
if (ret != WOLFSSL_SUCCESS)
err_sys("ca cert error");
WOLFSSL* ssl = wolfSSL_new(ctx);
if (ssl == NULL)
err_sys("ssl new dtls client failed");
wolfSSL_set_fd(ssl, sd);
ret = wolfSSL_connect(ssl);
if (ret != WOLFSSL_SUCCESS)
err_sys("ssl connect failed");
printf("TLS version is %s\n", wolfSSL_get_version(ssl));
printf("Cipher Suite is %s\n",
wolfSSL_CIPHER_get_name(wolfSSL_get_current_cipher(ssl)));
wolfSSL_write(ssl, response, (int)strlen(response));
int got = wolfSSL_read(ssl, buffer, sizeof(buffer));
if (got > 0) {
buffer[got] = 0;
printf("server said: %s\n", buffer);
}
unsigned char bigBuf[4096];
unsigned int i;
for (i = 0; i < (int)sizeof(bigBuf); i++)
bigBuf[i] = (unsigned char)(i & 0xFF);
wolfSSL_write(ssl, bigBuf, sizeof(bigBuf));
memset(bigBuf, 0, sizeof(bigBuf));
wolfSSL_read(ssl, bigBuf, sizeof(bigBuf));
for (i = 0; i < sizeof(bigBuf); i++) {
if (bigBuf[i] != (unsigned char)(i & 0xFF)) {
printf("big message check fail\n");
break;
}
}
wolfSSL_shutdown(ssl);
wolfSSL_free(ssl);
wolfSSL_CTX_free(ctx);
close(sd);
#endif /* WOLFSSL_SCTP && WOLFSSL_DTLS */
return 0;
}