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wolfssl-examples
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Updated client-dtls-resume.c 

1. Moved functionality to main
2. Converted hard-tab characters to 4 spaces each to fix indentation problems
3. Added comments
pull/55/head
abrahamsonn 2017-06-02 10:46:01 -06:00 committed by GitHub
parent 24d2431239
commit ca730b905d
1 changed files with 92 additions and 17 deletions
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109
dtls/client-dtls-resume.c
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@ -67,22 +67,25 @@ void DatagramClient (WOLFSSL* ssl)
int main (int argc, char** argv)
{
int sockfd = 0;
struct sockaddr_in servAddr;
const char* host = argv[1];
WOLFSSL* ssl = 0;
WOLFSSL_CTX* ctx = 0;
WOLFSSL* sslResume = 0;
WOLFSSL_SESSION* session = 0;
char* srTest = "testing session resume";
char cert_array[] = "../certs/ca-cert.pem";
char* certs = cert_array;
int sockfd = 0;
struct sockaddr_in servAddr;
const char* host = argv[1];
WOLFSSL* ssl = 0;
WOLFSSL_CTX* ctx = 0;
WOLFSSL* sslResume = 0;
WOLFSSL_SESSION* session = 0;
char* srTest = "testing session resume";
char cert_array[] = "../certs/ca-cert.pem";
char* certs = cert_array;
if (argc != 2) {
printf("usage: udpcli <IP address>\n");
return 1;
}
wolfSSL_Init();
/* Un-comment the following line to enable debugging */
/* wolfSSL_Debugging_ON(); */
if ( (ctx = wolfSSL_CTX_new(wolfDTLSv1_2_client_method())) == NULL) {
@ -118,22 +121,56 @@ int main (int argc, char** argv)
wolfSSL_set_fd(ssl, sockfd);
if (wolfSSL_connect(ssl) != SSL_SUCCESS) {
int err1 = wolfSSL_get_error(ssl, 0);
char buffer[80];
printf("err = %d, %s\n", err1, wolfSSL_ERR_error_string(err1, buffer));
printf("SSL_connect failed");
int err1 = wolfSSL_get_error(ssl, 0);
char buffer[80];
printf("err = %d, %s\n", err1, wolfSSL_ERR_error_string(err1, buffer));
printf("SSL_connect failed");
return 1;
}
DatagramClient(ssl);
/*****************************************************************************/
/* Code for sending datagram to server */
int recvlen;
char sendLine[MAXLINE];
char recvLine[MAXLINE - 1];
/* Loop while the user gives input or until an EOF is read */
while( fgets(sendLine, MAXLINE, stdin) != NULL ) {
/* Attempt to send sendLine to the server */
if ( ( wolfSSL_write(ssl, sendLine, strlen(sendLine))) !=
strlen(sendLine) ) {
printf("Error: wolfSSL_write failed.\n");
}
/* Attempt to read a message from server and store it in recvLine */
recvlen = wolfSSL_read(ssl, recvLine, sizeof(recvLine) - 1);
/* Error checking wolfSSL_read */
if (recvlen < 0) {
int readErr = wolfSSL_get_error(ssl, 0);
if (readErr != SSL_ERROR_WANT_READ) {
printf("Error: wolfSSL_read failed.\n");
}
}
recvLine[recvlen] = '\0';
fputs(recvLine, stdout);
}
/* */
/*****************************************************************************/
/* Keep track of the old session information */
wolfSSL_write(ssl, srTest, sizeof(srTest));
session = wolfSSL_get_session(ssl);
sslResume = wolfSSL_new(ctx);
/* Cleanup the memory used by the old session & ssl object */
wolfSSL_shutdown(ssl);
wolfSSL_free(ssl);
close(sockfd);
/* Perform setup with new variables/old session information */
memset(&servAddr, 0, sizeof(servAddr));
servAddr.sin_family = AF_INET;
servAddr.sin_port = htons(SERV_PORT);
@ -150,10 +187,17 @@ int main (int argc, char** argv)
}
wolfSSL_set_fd(sslResume, sockfd);
/* New method call - specifies to the WOLFSSL object to use the *
* given WOLFSSL_SESSION object */
wolfSSL_set_session(sslResume, session);
wolfSSL_set_fd(sslResume, sockfd);
if (wolfSSL_connect(sslResume) != SSL_SUCCESS) {
printf("SSL_connect failed");
int err1 = wolfSSL_get_error(sslResume, 0);
char buffer[80];
printf("err = %d, %s\n", err1, wolfSSL_ERR_error_string(err1, buffer));
printf("SSL_connect failed on session reuse\n");
return 1;
}
@ -164,10 +208,41 @@ int main (int argc, char** argv)
printf("didn't reuse session id!!!\n");
}
DatagramClient(sslResume);
/*****************************************************************************/
/* Code for sending datagram to server */
int recvlen;
char sendLine[MAXLINE];
char recvLine[MAXLINE - 1];
/* Loop while the user gives input or until an EOF is read */
while( fgets(sendLine, MAXLINE, stdin) != NULL ) {
/* Attempt to send sendLine to the server */
if ( ( wolfSSL_write(ssl, sendLine, strlen(sendLine))) !=
strlen(sendLine) ) {
printf("Error: wolfSSL_write failed.\n");
}
/* Attempt to read a message from server and store it in recvLine */
recvlen = wolfSSL_read(ssl, recvLine, sizeof(recvLine) - 1);
/* Error checking wolfSSL_read */
if (recvlen < 0) {
int readErr = wolfSSL_get_error(ssl, 0);
if (readErr != SSL_ERROR_WANT_READ) {
printf("Error: wolfSSL_read failed.\n");
}
}
recvLine[recvlen] = '\0';
fputs(recvLine, stdout);
}
/* */
/*****************************************************************************/
wolfSSL_write(sslResume, srTest, sizeof(srTest));
/* Cleanup memory used for storing the session information */
wolfSSL_shutdown(sslResume);
wolfSSL_free(sslResume);