i2pd documentation
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i2pd configuration

i2pd can be configured via command-line arguments and config files. Options are the same, for example, running i2pd with argument --port=10123 and setting option port = 10123 in config file will have same effect.

There are two separate config files i2pd.conf and tunnels.conf. i2pd.conf is main configuration file, where you configure all options. tunnels.conf is I2P tunnel configuration file, where you configure I2P hidden services and client tunnels for you needs. tunnels.conf options are documented here.

INI-like, syntax is the following : = . Comments are "#", not ";" as you may expect. See boost ticket All command-line parameters are allowed as keys, but note for those which contains dot (.).

For example:

i2pd.conf:

# comment
log = true
ipv6 = true
# settings for specific module
[httpproxy]
port = 4444
# ^^ this will be --httproxy.port= in cmdline
# another comment
[sam]
enabled = true

See also commented config with examples of all options in docs/i2pd.conf.

Options specified on the command line take precedence over those in the config file. If you are upgrading your very old router (< 2.3.0) see also this page.

Available options

Run ./i2pd --help to show builtin help message (default value of option will be shown in braces)

General options

Option Description
conf Config file (default: ~/.i2pd/i2pd.conf or /var/lib/i2pd/i2pd.conf). This parameter will be silently ignored if the specified config file does not exist.
tunconf Tunnels config file (default: ~/.i2pd/tunnels.conf or /var/lib/i2pd/tunnels.conf)
pidfile Where to write pidfile (dont write by default)
log Logs destination: stdout, file (stdout if not set, file - otherwise, for compatibility)
logfile Path to logfile (default - autodetect)
loglevel Log messages above this level (debug, info, warn, error)
datadir Path to storage of i2pd data (RI, keys, peer profiles, ...)
host Router external IP for incoming connections
port Port to listen for incoming connections (default: auto)
daemon Router will go to background after start
service Router will use system folders like '/var/lib/i2pd'
ipv6 Enable communication through ipv6. false by default
notransit Router will not accept transit tunnels at startup. false by default
floodfill Router will be floodfill. false by default
bandwidth Bandwidth limit: integer in KBps or letters: L (32), O (256), P (2048), X (>9000)
family Name of a family, router belongs to
netid Network ID, router belongs to. Main I2P is 2.

Windows-specific options

Option Description
svcctl Windows service management (--svcctl="install" or --svcctl="remove")
insomnia Prevent system from sleeping
close Action on close: minimize, exit, ask

All options below still possible in cmdline, but better write it in config file:

HTTP webconsole

Option Description
http.enabled If webconsole is enabled. true by default
http.address The address to listen on (HTTP server)
http.port The port to listen on (HTTP server) 7070 by default
http.auth Enable basic HTTP auth for webconsole
http.user Username for basic auth (default: i2pd)
http.pass Password for basic auth (default: random, see logs)

HTTP proxy

Option Description
httpproxy.enabled If HTTP proxy is enabled. true by default
httpproxy.address The address to listen on (HTTP Proxy)
httpproxy.port The port to listen on (HTTP Proxy) 4444 by default
httpproxy.keys optional keys file for HTTP proxy local destination
httpproxy.inbound.length Inbound tunnels length if keys is set. 3 by default
httpproxy.inbound.quantity Inbound tunnels quantity if keys is set. 5 by default
httpproxy.outbound.length Outbound tunnels length if keys is set. 3 by default
httpproxy.outbound.quantity Outbound tunnels quantity if keys is set. 5 by default

Socks proxy

Option Description
socksproxy.enabled If SOCKS proxy is enabled. true by default
socksproxy.address The address to listen on (SOCKS Proxy)
socksproxy.port The port to listen on (SOCKS Proxy). 4447 by default
socksproxy.keys optional keys file for SOCKS proxy local destination
socksproxy.inbound.length Inbound tunnels length if keys is set. 3 by default
socksproxy.inbound.quantity Inbound tunnels quantity if keys is set. 5 by default
socksproxy.outbound.length Outbound tunnels length if keys is set. 3 by default
socksproxy.outbound.quantity Outbound tunnels quantity if keys is set. 5 by default
socksproxy.outproxy Address of outproxy. requests outside i2p will go there
socksproxy.outproxyport Outproxy remote port

SAM interface

Option Description
sam.address The address to listen on (SAM bridge)
sam.port Port of SAM bridge. Usually 7656. SAM is off if not specified
sam.enabled If SAM is enabled. false by default

BOB interface

Option Description
bob.address The address to listen on (BOB command channel)
bob.port Port of BOB command channel. Usually 2827. BOB is off if not specified
bob.enabled If BOB is enabled. false by default

I2CP interface

Option Description
i2cp.address The address to listen on or an abstract address for Android LocalSocket
i2cp.port Port of I2CP server. Usually 7654. Ignored for Andorid
i2cp.enabled If I2CP is enabled. false by default. Other services don't require I2CP

I2PControl interface

Option Description
i2pcontrol.address The address to listen on (I2P control service)
i2pcontrol.port Port of I2P control service. Usually 7650. I2PControl is off if not specified
i2pcontrol.enabled If I2P control is enabled. false by default
i2pcontrol.password I2P control authentication password. itoopie by default
i2pcontrol.cert I2P control HTTPS certificate file name. i2pcontrol.crt.pem by default
i2pcontrol.key I2P control HTTPS certificate key file name. i2pcontrol.key.pem by default

UPNP

Option Description
upnp.enabled Enable or disable UPnP, false by default for CLI and true for GUI (Windows, Android)
upnp.name Name i2pd appears in UPnP forwardings list. I2Pd by default

Cryptography

Option Description
precomputation.elgamal Use ElGamal precomputated tables. false for x64 and true for other platforms by default

Reseeding

Option Description
reseed.verify Request SU3 signature verification
reseed.file Full path to SU3 file to reseed from
reseed.urls Reseed URLs, separated by comma

Addressbook options

Option Description
addressbook.defaulturl AddressBook subscription URL for initial setup
addressbook.subscriptions AddressBook subscriptions URLs, separated by comma

Limits

Option Description
limits.transittunnels Override maximum number of transit tunnels. 2500 by default
limits.openfiles Maximum size of corefile in Kb (0 - use system limit)
limits.coresize Maximum size of corefile in Kb (0 - use system limit)

Local addressbook

There is also a special addressbook config file in working directory addressbook/local.csv. It is used to map long I2P destinations to short, human readable domain names. The syntax is csv.