On Wed, 2012-08-22 at 11:29 +0200, Alex Bergmann wrote: > Actual 6 SYN frames are sent. The initial one and 5 retries. >
first one had a t0 + 0 delay. How can it count ??? > The kernel is waiting another 32 seconds for a SYN+ACK and then gives > the ETIMEDOUT back to userspace. > > Do you mean that we have to send another SYN packet after the 3 minutes? > First SYN is not a retransmit R2 = time_of_last_SYN - time_of_initial_SYN (t0) = 31 If you read RFC it states : "In particular, R2 for a SYN segment MUST be set large enough to provide retransmission of the segment for at least 3 minutes." That means that the last _retransmit_ MUST happen after 180 seconds. And not : Send all the restransmits at t0 + 1, then wait 180 seconds before giving connect() a timeout indication. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
