DS Thank you for your response. I have checked the error code using SSL_get_error.
I get an SSL_ERROR_SYSCALL (5) return code, indicating an I/O, but the error queue is empty. My application continues to function. It is fetching an HTML document over an HTTPS connection. My concern is that, since I reuse the SSL handle, I should wait for it to be completely closed rather than potentially overlap HTTPS requests. Occasionally my application hangs during an HTTPS request on a dual core Inspiron when the HTTPS requests come one on the heels of another. Can you tell me anything more about what sorts of conditions would cause an SSL_ERROR_SYSCALL error? Regards, Solveig On Tue, Sep 30, 2008 at 5:49 PM, David Schwartz <[EMAIL PROTECTED]>wrote: > > Solveig Viste wrote: > > > I have an application which is occasionally hanging. > > I have tracked it down to an SSL_shutdown call. > > > The value (0) returned from the shutdown call indicates > > that the shutdown is not finished. > > As happens with non-blocking sockets, sometimes the operation does not > complete and you have to retry the operation later. > > > The shutdown man page indicates that a second call to > > SSL_shutdown should cause a bidirectional shutdown, > > A subsequent retry of the operation will complete if and only if whatever > the first shutdown was waiting for has happened. > > > and I thought this is indeed what the application calls for. > > However, when I make the second call to SSL_shutdown, > > the value returned is still 0 (shutdown not finished) > > rather than 1 (shutdown complete) or -1 (shutdown not successful). > > Did you check the error code? Was it WANT_READ or WANT_WRITE? Did you wait > for the appropriate operation to be ready? > > > Is this recently added bahavior? Does the SSL handle > > need to have certain properties in order to get a > > bidirectional shutdown? > > You need to handle an organized shutdown the way you handle any other > operation on a non-blocking connection that might take time to complete. > > DS > > > ______________________________________________________________________ > OpenSSL Project http://www.openssl.org > User Support Mailing List openssl-users@openssl.org > Automated List Manager [EMAIL PROTECTED] > -- Solveig Viste Instantiations VA Smalltalk Support
