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32e3c6a607
The outgoing connection is now allocated dynamically upon the first attempt to touch the connection's source or destination address. If this allocation fails, we fail on SN_ERR_RESOURCE. As we didn't use si->conn anymore, it was removed. The endpoints are released upon session_free(), on the error path, and upon a new transaction. That way we are able to carry the existing server's address across retries. The stream interfaces are not initialized anymore before session_complete(), so we could even think about allocating them dynamically as well, though that would not provide much savings. The session initialization now makes use of conn_new()/conn_free(). This slightly simplifies the code and makes it more logical. The connection initialization code is now shorter by about 120 bytes because it's done at once, allowing the compiler to remove all redundant initializations. The si_attach_applet() function now takes care of first detaching the existing endpoint, and it is called from stream_int_register_handler(), so we can safely remove the calls to si_release_endpoint() in the application code around this call. A call to si_detach() was made upon stream_int_unregister_handler() to ensure we always free the allocated connection if one was allocated in parallel to setting an applet (eg: detect HTTP proxy while proceeding with stats maybe).