We already did so during Phase 1 but because all three Quick Mode
message have the same message ID we occasionally dropped the third
message as retransmit, so we do it there too. For INFORMATIONAL
and TRANSACTION exchanges we don't expect more than one inbound message
with the same message ID so we still use them there.
Fixes#1198.
If the (un)registering of a kernel interface (net or ipsec) fails, the
plugin loader will never know, since the appropriate functions always
returns TRUE. By making the (un)register functions return a boolean
value, the loader can detect a failure during initializing the kernel
interface and abort charon startup if desired.
This ensures we don't pass data (via msg_control) defined in a different
scope to sendmsg(). Actually, some compilers (e.g. GCC 5.2.1) might
optimize the memcpy() call away causing the packets not to get sent from
the intended source address.
It also makes the code clearer than with all these ifdefs.
Fixes#1171.
In some scenarios an IKE_SA might get restarted multiple times (e.g.
due to retransmits and delayed INVALID_KE_PAYLOAD notifies) so that
two IKE_SA_INIT messages might be sent that only differ in the
previously randomly generated NAT_DETECTION_SOURCE_IP payload.
This could cause an authentication failure on the responder if the two
peers don't use the same IKE_SA_INIT message in their InitiatorSignedOctets.
While the payload is generated in a reproducible way it will still change
when the daemon is restarted, which should make detecting the payloads
as fake a bit harder (compared to e.g. just using 0.0.0.0:0 as address).
Fixes#1131.
If the job gets queued for a newly created IKE_SA it might not yet be
checked in when the job is running, reschedule the job in that case.
This should fix the two p2pnat test scenarios, which occasionally
failed because one of the peers did not initiate the connection to
the mediation server.
In some cases we call wait_for_entry() but don't actually check out the
entry afterwards (e.g. because it doesn't match certain criteria). So
there won't be a call to checkin() for such entries causing waiting
threads to get signaled. Instead, such threads would be blocked until
another thread properly checks out/in the entry (or does a blocking
enumeration).
ifdown calls bind's rndc, which tries to access TCP port 953 on lo.
If these packets are dropped by the firewall we have to wait for the TCP
connections to time out, which takes quite a while.
With -W we reduce timeouts when we don't expect a response. With -i the
interval between pings is reduced (mostly in case of auto=route where
the first ping yields no reply).
Tobias Brunner