openssl s_server command outputs to stdout messages, indicating current state of server, such as "ACCEPT", "DONE", "ERROR".
When s_server is run interactively, these messages appear on the console in time, and user can see it. But, when s_server is run from some other process via pipe, standard output is buffered in the s_server process. So, it is not possible to control s_server programmaticaly without allocating pseudoterminal. In some cases it is highly desirable to be able to control s_server and s_client from some script (for instance for automatic tests). Following patch fixes this problem by adding BIO_flush call after outputting of some messages. This approach doesn't have performance penalty of fully unbuffered output, but ensures that reader of s_server standard output would see messages in time (Of course reader process should use unbuffered input, but it is usially no problem). Patch is made against 0.9.8 release. ______________________________________________________________________ OpenSSL Project http://www.openssl.org Development Mailing List openssl-dev@openssl.org Automated List Manager [EMAIL PROTECTED]
