Hello,
Here is my test code. I am downloading a file with https connection.
This is compiled as $g++ -lssl -lcrypto sslShow.cpp. on OS X 10.5.8
Using default OS X libs (libcrypto 0.9.7 and libssl 0.9.7)
When it has downloaded some 2MB data, I closed my laptop lid (OSX induced
sleep)
After 5 minutes when i open my laptop, the process hangs at the same place
as before.
I have reproduced the same with latest 0.9.8k version also.
Please suggest.
1. What i should include in this code to correct this hang?
2. How to set read/write timeouts?
Thanks a lot guys.
(the Test Code & Call Trace is as follows )
============CALL TRACE=======
Call graph:
811 Thread_2507
811 start
811 main
811 BIO_read
811 ssl_read
811 ssl3_read_internal
811 ssl3_read_bytes
811 ssl3_read_n
811 BIO_read
811 read$UNIX2003
811 read$UNIX2003
============================MY TEST CODE =====================
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <openssl/bio.h>
#include <iostream>
#define MAX_PACKET_SIZE 10000
int main() {
BIO * bio;
SSL * ssl;
SSL_CTX * ctx;
/* Initializing OpenSSL */
SSL_load_error_strings();
ERR_load_BIO_strings();
OpenSSL_add_all_algorithms();
SSL_library_init(); //mandatory and missing from some examples
ctx = SSL_CTX_new(SSLv23_client_method());
if (ctx == NULL) {
std::cout << "Ctx is null" << std::endl;
ERR_print_errors_fp(stderr);
}
//using a store from examples
if(! SSL_CTX_load_verify_locations(ctx,
"/Users/pd/workspace/openssl/TrustStore.pem", NULL))
{ /* Handle failed load here */
std::cout << "Faild load verify locations" << std::endl;
}
bio = BIO_new_ssl_connect(ctx);
BIO_get_ssl(bio, & ssl);
SSL_set_mode(ssl, SSL_MODE_AUTO_RETRY);
//replace with your own test server
BIO_set_conn_hostname(bio, "www.myDomain.com:https");
if(BIO_do_connect(bio) <= 0) {
std::cout<<"Failed connection" << std::endl;
} else {
std::cout<<"Connected" << std::endl;
}
if(SSL_get_verify_result(ssl) != X509_V_OK)
{
/* Handle the failed verification */
std::cout << "Failed get verify result " << std::endl;
fprintf(stderr, "Certificate verification error: %i\n",
SSL_get_verify_result(ssl));
//do not exit here (but some more verification would not hurt)
because if you are using a self-signed certificate you will receive 18
//18 X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT which is not an
error }
char *write_buf = "GET /downloads/goodApp.exe / HTTP/1.0\n\n";
if(BIO_write(bio, write_buf, strlen(write_buf)) <=
0){
if(! BIO_should_retry(bio)){
/* Handle failed write here */
}
/* Do something to handle the retry */
std::cout << "Failed write" << std::endl;
}
char buf[MAX_PACKET_SIZE];
int p;
char r[1024];
FILE *fp;
fp = fopen("something.abc", "a+");
for(;;){
p = BIO_read(bio, r, 1023);
if(p <= 0) break;
r[p] = 0;
fprintf(fp, "%s", r);
}
fclose(fp);
std::cout << "Done reading" << std::endl;
/* To free it from memory, use this line */
ERR_print_errors_fp(stderr);
BIO_free_all(bio);
}
return 0;
}
On Thu, Oct 29, 2009 at 4:57 PM, David Schwartz <dav...@webmaster.com>wrote:
>
> Parimal Das wrote:
>
> > Its the second case Darry,
> > Here the 'sleep' is Operating System Sleep mode induced by closing the
> lid
> of laptop.
> > After opening the laptop, when the system wakes up,
> > My application is always hanging at the same place.
>
> Bug is in your code. It is doing what you asked it do -- waiting up to
> forever for data from the other side. The other side will never send
> anything because it has long forgotten about the connection. Your
> application will never send anything because it is blocked in a read
> function. TCP and UDP will do the same thing if you call 'read' or 'recv'
> and block for data that will never arrive.
>
> DS
>
>
>
> ______________________________________________________________________
> OpenSSL Project http://www.openssl.org
> User Support Mailing List openssl-users@openssl.org
> Automated List Manager majord...@openssl.org
>
--
--
Warm Regards,
Parimal Das
