Function conn_init

connectd/connectd.c:682–726

This initializes a fresh io_conn by setting it to io_connect to the * destination */

/* This initializes a fresh io_conn by setting it to io_connect to the
 * destination */
static struct io_plan *conn_init(struct io_conn *conn,
				 struct connecting *connect)
{
	/*~ I generally dislike the pattern of "set to NULL, assert if NULL at
	 * bottom".  On -O2 and above the compiler will warn you at compile time
	 * if a there is a path by which the variable is not set, which is always
	 * preferable to a runtime assertion.  In this case, it's the best way
	 * to use the "enum in a switch" trick to make sure we handle all enum
	 * cases, so I use it. */
	struct addrinfo *ai = NULL;
	const struct wireaddr_internal *addr = &connect->addrs[connect->addrnum];

	switch (addr->itype) {
	case ADDR_INTERNAL_SOCKNAME:
		ai = wireaddr_internal_to_addrinfo(tmpctx, addr);
		break;
	case ADDR_INTERNAL_ALLPROTO:
		status_failed(STATUS_FAIL_INTERNAL_ERROR,
			      "Can't connect to all protocols");
		break;
	case ADDR_INTERNAL_AUTOTOR:
		status_failed(STATUS_FAIL_INTERNAL_ERROR,
			      "Can't connect to autotor address");
		break;
	case ADDR_INTERNAL_STATICTOR:
		status_failed(STATUS_FAIL_INTERNAL_ERROR,
			      "Can't connect to statictor address");
		break;
	case ADDR_INTERNAL_FORPROXY:
		status_failed(STATUS_FAIL_INTERNAL_ERROR,
			      "Can't connect to forproxy address");
		break;
	case ADDR_INTERNAL_WIREADDR:
		/* DNS should have been resolved before */
		assert(addr->u.wireaddr.type != ADDR_TYPE_DNS);
		/* If it was a Tor address, we wouldn't be here. */
		assert(!is_toraddr((char*)addr->u.wireaddr.addr));
		ai = wireaddr_to_addrinfo(tmpctx, &addr->u.wireaddr);
		break;
	}
	assert(ai);

	io_set_finish(conn, destroy_io_conn, connect);
	return io_connect(conn, ai, connection_out, connect);
}

/* This initializes a fresh io_conn by setting it to io_connect to the
 * SOCKS proxy, as handled in tor.c. */