1 Implementable right now (but not necessarily important), with caveats
2 (unavailable components that will limit what can be implemented right
3 away), in order in which they will likely be done:
4 * TESTING-TESTBED [Nate]
9 * FRAGMENTATION [Ji Lu]
11 * MySQL / Postgres plugins (datastore, datacache)
18 - TCP not used bi-directionally (especially important also for PONG!)
19 Need a way for plugin to tell to service that it can *reliably* transmit
20 PONGs. Need *good* way to ensure only one (plugin) session is active at
21 any given point in time; need systematic way to periodically probe latency/
22 transport cost changes
23 - disconnect notifications from TCP not always as nice as we might want
24 them to be (but how can we do this cleanly given that UDP is connectionless?)
25 - implement transport API to pretty-print transport address
26 + resolve cyclic dependency (gnunet-peerinfo -> transport_api -> peerinfo!)
27 + gnunet-transport-service crashes when asked to resolve address (!)
28 + asynchronous transport lookup and non-CPS iterator in peerinfo require
29 some work to ensure printing in the proper order...
30 - instantly filter addresses from *other* peers that
31 are *equal* to our own address + port (i.e., localhost:2086). We
32 no longer filter those for outgoing (helps with loopback testing
33 and keeps the code clean), but we should filter strictly *impossible*
34 incoming addresses! This is for efficiency, not correctness.
35 - [./transport/gnunet-service-transport.c:173]: (style) struct or union member 'TransportPlugin::rebuild' is never used
36 - [./transport/plugin_transport_tcp.c:391]: (style) struct or union member 'Plugin::address_update_task' is never used
38 - SET_KEY is triggered every 2.5 minutes (after session is up); should
39 just do PING (not SET_KEY + PING)
40 - "Forcing disconnect of XXX due to inactivity" -- can happen every few MS!?
41 (disconnect does not really succeed, or what?)
43 - need function to test "equivalency" of HELLOs; use in topology!
46 + active reply route caching design & implementation of service,
48 - gnunet-publish cannot be aborted using CTRL-C
49 - on some systems, keyword search does not find locally published content
50 (need testcase of command-line tools!)
51 - 2-peer download is still too slow (why?)
52 - advanced FS API parts
53 + namespaces: fundamental namespace API
54 + search: SBlocks, KSBlocks, probes, notify FS-service of known results
56 + location URIs (publish, search, download)
57 + indexing: index-failure-cleanup
58 + download: management/bounding of parallel downloads (for recursive dl.)
59 + datastore reservation (publishing)
60 + gnunet-publish (URI args)
61 + gnunet-download (directory)
62 + gnunet-search (options, incl. namespace search)
63 + gnunet-download (many options)
64 + gnunet-directory (man page, options)
65 + gnunet-pseudonym (all of it)
66 + gnunet-service-fs (remove failing on-demand blocks, hot-path routing, load-based routing, nitpicks)
67 - implement adv. FS testcases
69 + insert: sblocks, loc uris
71 + search: sblocks, skblocks, loc uris
74 - implement FS performance tests
79 - [./fs/gnunet-service-fs.c:208]: (style) struct or union member 'LocalGetContext::results_bf_size' is never used
80 - [./fs/gnunet-service-fs.c:501]: (style) struct or union member 'PendingRequest::used_pids_size' is never used
81 - [./fs/gnunet-service-fs.c:654]: (style) struct or union member 'ConnectedPeer::last_client_replies' is never used
82 - [./fs/gnunet-service-fs.c:669]: (style) struct or union member 'ConnectedPeer::avg_delay' is never used
83 - [./fs/gnunet-service-fs.c:675]: (style) struct or union member 'ConnectedPeer::avg_priority' is never used
84 - [./fs/gnunet-service-fs.c:688]: (style) struct or union member 'ConnectedPeer::pending_requests' is never used
85 - [./fs/gnunet-service-fs.c:694]: (style) struct or union member 'ConnectedPeer::last_p2p_replies_woff' is never used
86 - [./fs/gnunet-service-fs.c:700]: (style) struct or union member 'ConnectedPeer::last_client_replies_woff' is never used
93 * Module features to implement:
95 + good to have for DV evaluation!
98 + implement DV service [Nate & CG]
99 + implement DV library [Nate]
100 + implement DV transport plugin [Nate & CG]
101 + implement testcases [Nate]
102 + implement performance tests [Nate]
104 - design & implement new setup tool
107 + how to integrate scheduler with GTK event loop!
109 - 'server' uses 'GNUNET_PEERINFO_iterate', should probably switch to notification API
110 (for more instant / up-to-date hostlists at lower cost) [OPTIMIZATION]
112 - does not seem to work with timeouts (especially if service is not running)
114 - trust: need *fast* way to check/update trust in peers
115 (async peerinfo would not be right)
116 - scheduler should change OS process priority based on task priority;
117 should make better use of task priorities in general
118 - only connect() sockets that are ready (select()) [Nils]
119 [On W32, we need to select after calling socket before
122 - add stats (# bytes available, # bytes used, # PUTs, # GETs, # GETs satisfied)
124 - persistence support (publish, unindex, search, download)
125 - non-anonymous FS service (needs DHT)
126 + basic DHT integration
127 + CS-DHT-functions (DHT-put of LOC)
128 + P2P-functions (DHT-get)
129 - active migration support (in fs or in datastore?)
131 - needs more testing (especially F2F topology)
132 - needs to re-try connecting after disconnect (currently, it
133 initially triggers a connection request, but if that connection
134 fails / goes down, it does not retry in a timely fashion;
135 cause seems to be the 'blacklist_after_attempt' being set to 1h,
136 which is rather long -- and should probably be adjusted based on
137 the number of connections / known peers)
138 - If the topology daemon crashes, peers that were put on the
139 blacklist with transport will never be removed from it (until
140 transport service dies); we should use the blacklist notification
141 API to learn about the exact set of blacklisted peers at all times
142 (FIXME: the transport_api implementation of blacklisting
143 also does not work nicely for this since it won't let us know about
144 disconnect-reconnect events and the implicit whitelisting
145 that might happen here; that's not so bad since we will
146 re-blacklist on pre-connect attempts anyway, so this is
148 - the code uses the term 'blacklist' for both peers that are forbidden
149 to connect (i.e. F2F mode) as well as peers that we currently
150 won't try to actively connect to ourselves (since we just tried);
151 This is confusing. We need two distinct terms.
152 - move code to use hash table instead of linked list
153 - instead of periodically discarding blacklisted entries,
154 simply add task that is triggered at the right time (earlier free,
156 - check if new HELLO learned is different from old HELLO
157 before resetting entire state!
160 * Module features to implement:
162 + good to have for DV/DHT evaluation!
164 + implement DHT service (needs DV, DATACACHE)
165 + implement DHT library
166 + implement testcases
167 + implement performance tests
170 * Plugins to implement:
171 - UDP backend (RC-pre2)
172 + Fragmentation library
174 - HTTP backend (RC-pre2)
176 - need to get rid of synchronous API for service starts (cause all kinds of problems)
177 [=> eliminate for need to tell ARM about service starts most of the time!] [Safey]
178 - better tracking of which config changes actually need to cause process restarts by ARM.
179 - listen for requests to discover dependencies between services (and avoid
180 having to explicitly program start requests)
181 - better crash management (attach debugging support, capture and analyze
182 debug output, detect random vs. deterministic crashes)
189 + see discussions @ FISL about integration with event loop!
190 * Determine RC bugs and fix those!
192 - modify configuration to allow controlling connections for non-local starts
193 - testbed creation with topology (needs working F2F topology) [Nate]
194 - testbed with churn [Nate]
195 - implement testcases for distributed testing [Nate]
196 - test basic peer re-configure [Nate]
197 - test topology creation [Nate]
198 - test churn generation [Nate]
199 - consider changing API for peer-group termination to
200 call continuation when done
206 - update webpage documentation
208 - expand bibliography
209 - convert documentation pages to books
210 - update books (especially for developers)
211 - create good Drupal theme for GNUnet
212 - make a NICE download page and figure out how to
213 enable developers to publish TGZs nicely
214 - port "contact" page
215 - add content type for "todo" items?
217 * Plugins to implement:
218 - MySQL database backends
221 - Postgres database backends
225 * Determine RC bugs and fix those!
230 - SMTP transport backend
231 - HTTPS transport backend
232 + improved HTTPS support in MHD
234 - Implement method of learning our external addresses from
235 other peers; need some kind of threshold-based
236 scheme, limiting both the total number of addresses that we accept
237 this way as well as requiring multiple confirmations; also, we
238 should possibly try to confirm that the given address works for
239 us ourselves (loopback-style) before adding it to the list
240 + we may be able to simplify WELCOME messages (no need to add
241 addresses there anymore, but may help to learn them there anyway...).
242 + we probably want some kind of voting/counting for learning IP addresses
243 (maybe including IP addresses in ads proportional to how often others
244 report them? we at least need some protection against >64k HELLOs!),
245 + provide a way to give the user a list of "learned" IP addresses and
246 a way to easily "veto" addresses off the list!
247 => If MiM attacker uses vetoed address, blacklist the specific IP for
248 the presumed neighbour!
249 - implement gnunet-transport (transport configurator / tester)
250 - UPnP-based IP detection
251 (Note: build library always, build service when libxml2/etc. are available)
253 - Remove KBlocks in gnunet-unindex (see discussion with Kenneth Almquist on gnunet-devs in 9/2009)
254 - Allow checking of presence of search results and/or content via command-line tools
255 (add options to gnunet-search / gnunet-download to limit search to local peer)
257 - should use BIO instead of mmap
259 - expire 'ancient' HELLOs (those without valid addresses AND that
260 we have not 'used' (for their public keys) in a while; need a way
261 to track actual 'use')
262 - make sue we also trigger notifications whenever HELLOs expire