s_server.c

		/* Prefix the session_id with the required prefix. NB: If our
		 * prefix is too long, clip it - but there will be worse effects
		 * anyway, eg. the server could only possibly create 1 session
		 * ID (ie. the prefix!) so all future session negotiations will
		 * fail due to conflicts. */
		memcpy(id, session_id_prefix,
			(strlen(session_id_prefix) < *id_len) ?
			strlen(session_id_prefix) : *id_len);
		}
	while(SSL_has_matching_session_id(ssl, id, *id_len) &&
		(++count < MAX_SESSION_ID_ATTEMPTS));
	if(count >= MAX_SESSION_ID_ATTEMPTS)
		return 0;
	return 1;
	}