Hi,
I am trying to implement the simple ssl server. It is working perfectly fine as long as i am running it on my localmachine using the localhost as the IP address of the server. But the same code is not being run on my beagle bone.
I have tried running both the client and the server on the same board with the IP as 127.0.0.1, but it is not working, neither when i am using two boards with distinct IPs, nor using my computer as the server, and my board as the client.
It is giving me this error everytime.
On client side - ERROR: failed to connect to wolfSSL
On server side - Client connected successfully
ERROR: failed to read
My code
client-tls.c
/* client-tls.c
*
* Copyright (C) 2006-2015 wolfSSL Inc.
*
* This file is part of wolfSSL. (formerly known as CyaSSL)
*
* 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 02110-1301, USA
*/
/* the usual suspects */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
/* socket includes */
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <unistd.h>
/* wolfSSL */
#include <wolfssl/options.h>
#include <wolfssl/ssl.h>
#define DEFAULT_PORT 11113
#define CERT_FILE "ca-cert.pem"
int main(int argc, char** argv)
{
int sockfd;
struct sockaddr_in servAddr;
char buff[256];
size_t len;
/* declare wolfSSL objects */
WOLFSSL_CTX* ctx;
WOLFSSL* ssl;
/* Check for proper calling convention */
if (argc != 2) {
printf("usage: %s <IPv4 address>\n", argv[0]);
return 0;
}
/* Initialize wolfSSL */
wolfSSL_Init();
/* Create a socket that uses an internet IPv4 address,
* Sets the socket to be stream based (TCP),
* 0 means choose the default protocol. */
if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
fprintf(stderr, "ERROR: failed to create the socket\n");
return -1;
}
/* Create and initialize WOLFSSL_CTX */
if ((ctx = wolfSSL_CTX_new(wolfTLSv1_2_client_method())) == NULL) {
fprintf(stderr, "ERROR: failed to create WOLFSSL_CTX\n");
return -1;
}
/* Load client certificates into WOLFSSL_CTX */
if (wolfSSL_CTX_load_verify_locations(ctx, CERT_FILE, NULL)
!= SSL_SUCCESS) {
fprintf(stderr, "ERROR: failed to load %s, please check the file.\n",
CERT_FILE);
return -1;
}
/* Initialize the server address struct with zeros */
memset(&servAddr, 0, sizeof(servAddr));
/* Fill in the server address */
servAddr.sin_family = AF_INET; /* using IPv4 */
servAddr.sin_port = htons(DEFAULT_PORT); /* on DEFAULT_PORT */
/* Get the server IPv4 address from the command line call */
if (inet_pton(AF_INET, argv[1], &servAddr.sin_addr) != 1) {
fprintf(stderr, "ERROR: invalid address\n");
return -1;
}
/* Connect to the server */
if (connect(sockfd, (struct sockaddr*) &servAddr, sizeof(servAddr))
== -1) {
fprintf(stderr, "ERROR: failed to connect\n");
return -1;
}
/* Create a WOLFSSL object */
if ((ssl = wolfSSL_new(ctx)) == NULL) {
fprintf(stderr, "ERROR: failed to create WOLFSSL object\n");
return -1;
}
/* Attach wolfSSL to the socket */
wolfSSL_set_fd(ssl, sockfd);
/* Connect to wolfSSL on the server side */
if (wolfSSL_connect(ssl) != SSL_SUCCESS) {
fprintf(stderr, "ERROR: failed to connect to wolfSSL\n");
return -1;
}
/* Get a message for the server from stdin */
printf("Message for server: ");
memset(buff, 0, sizeof(buff));
fgets(buff, sizeof(buff), stdin);
len = strnlen(buff, sizeof(buff));
/* Send the message to the server */
if (wolfSSL_write(ssl, buff, len) != len) {
fprintf(stderr, "ERROR: failed to write\n");
return -1;
}
/* Read the server data into our buff array */
memset(buff, 0, sizeof(buff));
if (wolfSSL_read(ssl, buff, sizeof(buff)-1) == -1) {
fprintf(stderr, "ERROR: failed to read\n");
return -1;
}
/* Print to stdout any data the server sends */
printf("Server: %s\n", buff);
/* Cleanup and return */
wolfSSL_free(ssl); /* Free the wolfSSL object */
wolfSSL_CTX_free(ctx); /* Free the wolfSSL context object */
wolfSSL_Cleanup(); /* Cleanup the wolfSSL environment */
close(sockfd); /* Close the connection to the server */
return 0; /* Return reporting a success */
}
server-tls.c
/* server-tls.c
*
* Copyright (C) 2006-2015 wolfSSL Inc.
*
* This file is part of wolfSSL. (formerly known as CyaSSL)
*
* 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 02110-1301, USA
*/
/* the usual suspects */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
/* socket includes */
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <unistd.h>
/* wolfSSL */
#include <wolfssl/options.h>
#include <wolfssl/ssl.h>
#define DEFAULT_PORT 11113
#define CERT_FILE "server-cert.pem"
#define KEY_FILE "server-key.pem"
int main()
{
int sockfd;
int connd;
struct sockaddr_in servAddr;
struct sockaddr_in clientAddr;
socklen_t size = sizeof(clientAddr);
char buff[256];
size_t len;
int shutdown = 0;
/* declare wolfSSL objects */
WOLFSSL_CTX* ctx;
WOLFSSL* ssl;
/* Initialize wolfSSL */
wolfSSL_Init();
/* Create a socket that uses an internet IPv4 address,
* Sets the socket to be stream based (TCP),
* 0 means choose the default protocol. */
if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
fprintf(stderr, "ERROR: failed to create the socket\n");
return -1;
}
/* Create and initialize WOLFSSL_CTX */
if ((ctx = wolfSSL_CTX_new(wolfTLSv1_2_server_method())) == NULL) {
fprintf(stderr, "ERROR: failed to create WOLFSSL_CTX\n");
return -1;
}
/* Load server certificates into WOLFSSL_CTX */
if (wolfSSL_CTX_use_certificate_file(ctx, CERT_FILE, SSL_FILETYPE_PEM)
!= SSL_SUCCESS) {
fprintf(stderr, "ERROR: failed to load %s, please check the file.\n",
CERT_FILE);
return -1;
}
/* Load server key into WOLFSSL_CTX */
if (wolfSSL_CTX_use_PrivateKey_file(ctx, KEY_FILE, SSL_FILETYPE_PEM)
!= SSL_SUCCESS) {
fprintf(stderr, "ERROR: failed to load %s, please check the file.\n",
KEY_FILE);
return -1;
}
/* Initialize the server address struct with zeros */
memset(&servAddr, 0, sizeof(servAddr));
/* Fill in the server address */
servAddr.sin_family = AF_INET; /* using IPv4 */
servAddr.sin_port = htons(DEFAULT_PORT); /* on DEFAULT_PORT */
servAddr.sin_addr.s_addr = INADDR_ANY; /* from anywhere */
/* Bind the server socket to our port */
if (bind(sockfd, (struct sockaddr*)&servAddr, sizeof(servAddr)) == -1) {
fprintf(stderr, "ERROR: failed to bind\n");
return -1;
}
/* Listen for a new connection, allow 5 pending connections */
if (listen(sockfd, 5) == -1) {
fprintf(stderr, "ERROR: failed to listen\n");
return -1;
}
/* Continue to accept clients until shutdown is issued */
while (!shutdown) {
printf("Waiting for a connection...\n");
/* Accept client connections */
if ((connd = accept(sockfd, (struct sockaddr*)&clientAddr, &size))
== -1) {
fprintf(stderr, "ERROR: failed to accept the connection\n\n");
return -1;
}
/* Create a WOLFSSL object */
if ((ssl = wolfSSL_new(ctx)) == NULL) {
fprintf(stderr, "ERROR: failed to create WOLFSSL object\n");
return -1;
}
/* Attach wolfSSL to the socket */
wolfSSL_set_fd(ssl, connd);
printf("Client connected successfully\n");
/* Read the client data into our buff array */
memset(buff, 0, sizeof(buff));
if (wolfSSL_read(ssl, buff, sizeof(buff)-1) == -1) {
fprintf(stderr, "ERROR: failed to read\n");
return -1;
}
/* Print to stdout any data the client sends */
printf("Client: %s\n", buff);
/* Check for server shutdown command */
if (strncmp(buff, "shutdown", 8) == 0) {
printf("Shutdown command issued!\n");
shutdown = 1;
}
/* Write our reply into buff */
memset(buff, 0, sizeof(buff));
memcpy(buff, "I hear ya fa shizzle!\n", sizeof(buff));
len = strnlen(buff, sizeof(buff));
/* Reply back to the client */
if (wolfSSL_write(ssl, buff, len) != len) {
fprintf(stderr, "ERROR: failed to write\n");
return -1;
}
/* Cleanup after this connection */
wolfSSL_free(ssl); /* Free the wolfSSL object */
close(connd); /* Close the connection to the client */
}
printf("Shutdown complete\n");
/* Cleanup and return */
wolfSSL_CTX_free(ctx); /* Free the wolfSSL context object */
wolfSSL_Cleanup(); /* Cleanup the wolfSSL environment */
close(sockfd); /* Close the socket listening for clients */
return 0; /* Return reporting a success */
}
I will be extremely thankful if someone can help me in this regard,