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343 Commits
Author SHA1 Message Date
Bryan Boreham 3cd1a17c23 IP Allocation Management 
Using the Ring CRDT and Weave gossip, provides an interface
for the weave script to allocate IP addresses in `weave run`,
`weave start` and `weave expose`.

See docs/ipam.md for implementation details, and site/features.md
for user-visible changes.
 2015-05-14 17:44:06 +01:00
Matthias Radestock c158b86dc6 refactor: shorten a method name 2015-05-14 15:13:10 +01:00
Matthias Radestock c7dd48d769 introduce PeerUID type 2015-05-14 12:35:01 +01:00
Matthias Radestock ace56da7b3 allow Gossiper.Gossip to return nil 
...to indicate 'no data'
 2015-05-14 12:02:56 +01:00
Matthias Radestock 953449c215 refactor: extract Peer.ForEachConnectedPeer helper 2015-05-11 21:06:07 +01:00
Matthias Radestock c5c93d3a77 refactor: increase similarity betweeen parts of route calculation 2015-05-11 20:14:24 +01:00
Matthias Radestock 039446f756 cosmetic: remove outdated comment 2015-05-11 20:00:04 +01:00
Matthias Radestock 43133b5851 increase tolerance for missed udp heartbeats 
3 are quite easy to miss when there is contention. 6 less so.
 2015-05-11 18:35:06 +01:00
Matthias Radestock e246e6acc6 coarser lock granularity 
- get rid of individual Peer locks
- hold Peers read (or write) lock and LocalPeer read lock while
  performing route calculations

This eliminates the deadlock resulting from the inconsistent lock
acquisition order in route calculcation.

Fixes #643.
 2015-05-11 17:19:54 +01:00
Matthias Radestock 5bd8730353 make Peer.Encode lock-free 2015-05-11 17:19:51 +01:00
Matthias Radestock c210f0e3c1 make Peer.Info lock-free 2015-05-11 17:19:46 +01:00
Matthias Radestock 426d8edb31 remove Peer.SetVersionAndConnections 
further shrinking Peer API
 2015-05-11 17:19:43 +01:00
Matthias Radestock 86ba3be4f7 move Connections from Peer to LocalPeer 
further shrinking the former's API
 2015-05-11 17:19:38 +01:00
Matthias Radestock 5bf6889250 remove Peer.Version 
further shrinking the Peer API
 2015-05-11 17:19:35 +01:00
Matthias Radestock 0229185ffe move ConnectionTo from Peer to LocalPeer 
further shrinking the former's API
 2015-05-11 17:19:31 +01:00
Matthias Radestock 505ced5cc8 move localRefCount accounting responsibility from Peer to Peers 
This makes for a more symmetric API - Peers.FetchWithDefault does the
increment and Peers.Dereference does the decrement, whereas previously
the latter was done by Peer.DecrementLocalRefCount.

This does increase lock granularity, i.e. modifying any ref count now
requires a write lock on Peers.
 2015-05-11 17:19:23 +01:00
Matthias Radestock 3e6eef5ebd refactor(ish): move a bunch of methods from Peer to LocalPeer 
in order to reduce the former's API surface
 2015-05-11 17:19:15 +01:00
Matthias Radestock 4bef9d90fb cosmetic: resolve some linter complaints 2015-05-11 02:33:56 +01:00
Matthias Radestock ef2c55141b keep linter happy 2015-05-11 02:25:01 +01:00
Matthias Radestock 0cbbe9bac3 make Peer.String() return the common case 
When we want a string representation of a Peer, we nearly always just
want the full name. So make String() return that and introduce Info()
to return expanded info.
 2015-05-10 23:58:23 +01:00
Matthias Radestock 7b0f432339 cosmetic: fix typo 2015-05-09 17:11:52 +01:00
Matthias Radestock 8caa58af26 Merge branch 'weave-common-signals' of https://github.com/inercia/weave into inercia-weave-common-signals 2015-05-06 19:33:06 +01:00
Alvaro Saurin f723d5afd8 Move the router to the new signals handler 2015-05-06 15:07:36 +02:00
Matthias Radestock e656d74633 cosmetic 2015-05-05 22:08:03 +01:00
Matthias Radestock 22e612a738 Merge branch 'reduced_gob' of https://github.com/awh/weave into awh-reduced_gob 2015-05-05 21:36:09 +01:00
Adam Harrison ab68a1c325 Introduce PeerSummary 2015-05-05 10:59:09 +01:00
Matthias Radestock e40f1fe9a7 fix typo and reformat 2015-05-02 17:46:21 +01:00
David Wragg be983931fc Produce a better error message when there is no real SetImmediateMode 
If gopacket is compiled against an older pcap.h that doesn't have
pcap_set_immediate_mode, it supplies a dummy definition that
always returns PCAP_ERROR.  That becomes "Generic error", which
is not very helpful.  The real pcap_set_set_immediate never
returns PCAP_ERROR, so this turns it into a more informative
message.
 2015-05-01 21:40:53 +01:00
Matthias Radestock 137776bcb2 remove decryptor shutdown 
we only needed it because of the nonce channels
 2015-04-30 14:47:16 +01:00
Matthias Radestock e223899982 remove nonce transmission from protocol 2015-04-30 14:47:16 +01:00
Matthias Radestock b365c3806b replace random nonces with message sequence numbers in udp crypto 2015-04-30 14:47:16 +01:00
Matthias Radestock 696bfe464c replace random nonces with message sequence numbers in tcp crypto 
Since TCP is reliable, we do not need to transmit the nonce itself;
the recipient can simply construct the nonce from its own message
counter. Hence there is no message envelope and we can thus remove a
whole layer of encoding.
 2015-04-30 14:47:16 +01:00
Adam Harrison b48a93c483 Remove obsolete connsIterator 2015-04-30 13:06:57 +01:00
Adam Harrison 047614b540 Encode/decode []ConnectionSummary instead of []byte 2015-04-30 13:03:18 +01:00
Adam Harrison 26dfc42034 Bump protocol version due to gob restructuring 2015-04-29 16:39:14 +01:00
Matthias Radestock 61a5640a95 do not connect to weave port of outbound connection endpoints 
There is no point.
 2015-04-28 16:07:34 +01:00
Matthias Radestock e45ea65e45 tiny simplifying refactor 2015-04-27 15:51:25 +01:00
Matthias Radestock b74348e59d d'oh 2015-04-27 08:58:02 +01:00
Matthias Radestock ce03f27044 refactor: use 'copy' instead of for loop for slice->array copy 2015-04-27 07:42:52 +01:00
Matthias Radestock 1de86f4312 cosmetic 2015-04-27 07:30:17 +01:00
Matthias Radestock 02a7875eb8 refactor: remove last dependency of crypto on LocalConnection 2015-04-27 07:27:31 +01:00
Matthias Radestock ea4e84cdd3 refactor: (almost) remove dependency of crypto on LocalConnection 2015-04-27 07:14:30 +01:00
Matthias Radestock 29c02d2724 refactor: lift error handling out of Encryptor.Bytes() 
in order to reduce dependency on LocalConnection
 2015-04-27 07:12:21 +01:00
Matthias Radestock fcd44c37e1 refactor: reduce coupling between connections and crypto 2015-04-27 06:13:41 +01:00
Matthias Radestock ff49bb5125 document why we carry the DF flag in payload 2015-04-25 12:36:05 +01:00
Matthias Radestock d82f60f18b cosmetic 2015-04-25 12:06:20 +01:00
Matthias Radestock d15575212a refactor: no need to record 'df' in two places in state 2015-04-25 12:05:17 +01:00
David Wragg dceef04ffa Separate Forwarder and ForwarderDF 
Much of the state and code associated with Forwarder only applied in the
DF case.
 2015-04-18 10:38:05 +01:00
Matthias Radestock a5a91ebb33 do not shut down connections on PacketDecodingError 2015-04-15 21:52:56 +01:00
Matthias Radestock f4ba0f7287 log udp packet processing errors against the connection 2015-04-15 21:10:22 +01:00