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services: Add a service for opendht.
* gnu/services/networking.scm (maybe-number?, maybe-string?): New procedures. (<opendht-configuration>): New configuration record. (%opendht-accounts): New variable. (opendht-configuration->command-line-arguments): New procedure. (opendht-shepherd-service, opendht-service-type): New variables. * doc/guix.texi (Networking Services): Document the new service.
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Maxim Cournoyer
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2 changed files with 221 additions and 1 deletions
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@ -16688,6 +16688,99 @@ must be @code{'()} or @code{'("internal")}.
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detailed discussion of each configuration field.
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@end deftp
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@cindex opendht, distributed hash table network service
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@cindex dhtproxy, for use with jami
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@defvr {Scheme Variable} opendht-service-type
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This is the type of the service running a @uref{https://opendht.net,
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OpenDHT} node, @command{dhtnode}. The daemon can be used to host your
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own proxy service to the distributed hash table (DHT), for example to
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connect to with Jami, among other applications.
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@quotation Important
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When using the OpenDHT proxy server, the IP addresses it ``sees'' from
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the clients should be addresses reachable from other peers. In practice
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this means that a publicly reachable address is best suited for a proxy
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server, outside of your private network. For example, hosting the proxy
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server on a IPv4 private local network and exposing it via port
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forwarding could work for external peers, but peers local to the proxy
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would have their private addresses shared with the external peers,
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leading to connectivity problems.
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@end quotation
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The value of this service is a @code{opendht-configuration} object, as
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described below.
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@end defvr
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@deftp {Data Type} opendht-configuration
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This is the data type for the OpenDHT service configuration.
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@c The fields documentation has been auto-generated using the
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@c configuration->documentation procedure from
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@c (gnu services configuration).
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Available @code{opendht-configuration} fields are:
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@deftypevr {@code{opendht-configuration} parameter} package opendht
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The @code{opendht} package to use.
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@end deftypevr
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@deftypevr {@code{opendht-configuration} parameter} boolean peer-discovery?
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Whether to enable the multicast local peer discovery mechanism.
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Defaults to @samp{#f}.
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@end deftypevr
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@deftypevr {@code{opendht-configuration} parameter} boolean enable-logging?
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Whether to enable logging messages to syslog. It is disabled by default
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as it is rather verbose.
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Defaults to @samp{#f}.
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@end deftypevr
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@deftypevr {@code{opendht-configuration} parameter} boolean debug?
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Whether to enable debug-level logging messages. This has no effect if
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logging is disabled.
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Defaults to @samp{#f}.
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@end deftypevr
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@deftypevr {@code{opendht-configuration} parameter} maybe-string bootstrap-host
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The node host name that is used to make the first connection to the
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network. A specific port value can be provided by appending the
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@code{:PORT} suffix. By default, it uses the Jami bootstrap nodes, but
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any host can be specified here. It's also possible to disable
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bootsrapping by setting this to the @code{'disabled} symbol.
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Defaults to @samp{"bootstrap.jami.net:4222"}.
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@end deftypevr
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@deftypevr {@code{opendht-configuration} parameter} maybe-number port
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The UDP port to bind to. When set to @code{'disabled}, an available
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port is automatically selected.
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Defaults to @samp{4222}.
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@end deftypevr
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@deftypevr {@code{opendht-configuration} parameter} maybe-number proxy-server-port
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Spawn a proxy server listening on the specified port.
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Defaults to @samp{disabled}.
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@end deftypevr
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@deftypevr {@code{opendht-configuration} parameter} maybe-number proxy-server-port-tls
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Spawn a proxy server listening to TLS connections on the specified port.
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Defaults to @samp{disabled}.
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@end deftypevr
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@end deftp
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@cindex Tor
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@defvr {Scheme Variable} tor-service-type
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This is the type for a service that runs the @uref{https://torproject.org,
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@ -10,7 +10,7 @@
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;;; Copyright © 2018 Chris Marusich <cmmarusich@gmail.com>
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;;; Copyright © 2018 Arun Isaac <arunisaac@systemreboot.net>
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;;; Copyright © 2019 Florian Pelz <pelzflorian@pelzflorian.de>
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;;; Copyright © 2019 Maxim Cournoyer <maxim.cournoyer@gmail.com>
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;;; Copyright © 2019, 2021 Maxim Cournoyer <maxim.cournoyer@gmail.com>
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;;; Copyright © 2019 Sou Bunnbu <iyzsong@member.fsf.org>
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;;; Copyright © 2019 Alex Griffin <a@ajgrf.com>
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;;; Copyright © 2020 Brice Waegeneire <brice@waegenei.re>
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@ -111,6 +111,18 @@ (define-module (gnu services networking)
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inetd-entry
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inetd-service-type
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opendht-configuration
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opendht-configuration-peer-discovery?
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opendht-configuration-verbose?
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opendht-configuration-bootstrap-host
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opendht-configuration-port
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opendht-configuration-proxy-server-port
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opendht-configuration-proxy-server-port-tls
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opendht-configuration->command-line-arguments
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opendht-shepherd-service
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opendht-service-type
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tor-configuration
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tor-configuration?
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tor-hidden-service
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@ -740,6 +752,121 @@ (define-public inetd-service-type
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for listening on Internet sockets and spawning the corresponding services on
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demand.")))
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;;;
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;;; OpenDHT, the distributed hash table network used by Jami
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;;;
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(define-maybe/no-serialization number)
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(define-maybe/no-serialization string)
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;;; To generate the documentation of the following configuration record, you
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;;; can evaluate: (configuration->documentation 'opendht-configuration)
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(define-configuration/no-serialization opendht-configuration
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(opendht
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(package opendht)
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"The @code{opendht} package to use.")
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(peer-discovery?
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(boolean #false)
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"Whether to enable the multicast local peer discovery mechanism.")
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(enable-logging?
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(boolean #false)
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"Whether to enable logging messages to syslog. It is disabled by default
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as it is rather verbose.")
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(debug?
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(boolean #false)
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"Whether to enable debug-level logging messages. This has no effect if
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logging is disabled.")
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(bootstrap-host
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(maybe-string "bootstrap.jami.net:4222")
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"The node host name that is used to make the first connection to the
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network. A specific port value can be provided by appending the @code{:PORT}
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suffix. By default, it uses the Jami bootstrap nodes, but any host can be
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specified here. It's also possible to disable bootstrapping by setting this
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to the @code{'disabled} symbol.")
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(port
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(maybe-number 4222)
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"The UDP port to bind to. When set to @code{'disabled}, an available port
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is automatically selected.")
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(proxy-server-port
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(maybe-number 'disabled)
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"Spawn a proxy server listening on the specified port.")
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(proxy-server-port-tls
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(maybe-number 'disabled)
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"Spawn a proxy server listening to TLS connections on the specified
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port."))
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(define %opendht-accounts
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;; User account and groups for Tor.
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(list (user-group (name "opendht") (system? #t))
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(user-account
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(name "opendht")
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(group "opendht")
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(system? #t)
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(comment "OpenDHT daemon user")
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(home-directory "/var/empty")
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(shell (file-append shadow "/sbin/nologin")))))
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(define (opendht-configuration->command-line-arguments config)
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"Derive the command line arguments used to launch the OpenDHT daemon from
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CONFIG, an <opendht-configuration> object."
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(match-record config <opendht-configuration>
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(opendht bootstrap-host enable-logging? port debug? peer-discovery?
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proxy-server-port proxy-server-port-tls)
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(let ((dhtnode #~(string-append #$opendht:tools "/bin/dhtnode")))
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`(,dhtnode
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"--service" ;non-forking mode
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,@(if (string? bootstrap-host)
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(list "--bootstrap" bootstrap-host))
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,@(if enable-logging?
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(list "--syslog")
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'())
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,@(if (number? port)
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(list "--port" (number->string port))
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'())
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,@(if debug?
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(list "--verbose")
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'())
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,@(if peer-discovery?
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(list "--peer-discovery")
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'())
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,@(if (number? proxy-server-port)
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(list "--proxyserver" (number->string proxy-server-port))
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'())
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,@(if (number? proxy-server-port-tls)
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(list "--proxyserverssl" (number->string proxy-server-port-tls))
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'())))))
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(define (opendht-shepherd-service config)
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"Return a <shepherd-service> running OpenDHT."
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(shepherd-service
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(documentation "Run an OpenDHT node.")
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(provision '(opendht dhtnode dhtproxy))
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(requirement '(user-processes syslogd))
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(start #~(make-forkexec-constructor/container
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(list #$@(opendht-configuration->command-line-arguments config))
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#:mappings (list (file-system-mapping
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(source "/dev/log") ;for syslog
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(target source)))
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#:user "opendht"))
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(stop #~(make-kill-destructor))))
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(define opendht-service-type
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(service-type
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(name 'opendht)
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(default-value (opendht-configuration))
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(extensions
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(list (service-extension shepherd-root-service-type
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(compose list opendht-shepherd-service))
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(service-extension account-service-type
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(const %opendht-accounts))))
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(description "Run the OpenDHT @command{dhtnode} command that allows
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participating in the distributed hash table based OpenDHT network. The
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service can be configured to act as a proxy to the distributed network, which
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can be useful for portable devices where minimizing energy consumption is
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paramount. OpenDHT was originally based on Kademlia and adapted for
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applications in communication. It is used by Jami, for example.")))
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;;;
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;;; Tor.
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