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