I2P enables a JSONRPC2 interface via the plugin I2PControl. The aim of the interface is to provide simple way to interface with a running I2P node. A client, itoopie, has been developed in parallel. The JSONRPC2 implementation for the client as well as the plugin is provided by the java libraries JSON-RPC 2.0. A list of implementations of JSON-RPC for various languages can be found at the JSON-RPC wiki.

I2PControl is by default listening on https://localhost:7650

API, version 1.

Parameters are only provided in a named way (maps).

JSON-RPC 2 format

{
  "id": "id",
  "method": "Method-name",
  "params": {
    "Param-key-1": "param-value-1",
    "Param-key-2": "param-value-2",
    "Token": "**actual token**"
  },
  "jsonrpc": "2.0"
}

{
  "id": "id",
  "result": {
    "Result-key-1": "result-value-1",
    "Result-key-2": "result-value-2"
  },
  "jsonrpc": "2.0"
}

method-name – الوصف
Request:
• Param-key-1 – الوصف
• Param-key-2 – الوصف
• Token – Token used for authenticating every request (excluding the 'Authenticate' RPC method)
Response:
• Result-key-1 – الوصف
• Result-key-2 – الوصف

Implemented methods

Authenticate – Creates and returns an authentication token used for further communication.
Request:
• API – [long] The version of the I2PControl API used by the client.
• Password – [String] The password used for authenticating against the remote server.
Response:
• API – [long] The primary I2PControl API version implemented by the server.
• Token – [String] The token used for further communication.

Echo – Echoes the value of the echo key, used for debugging and testing.
Request:
• Echo – [String] Value will be returned in response.
• Token – [String] Token used for authenticating the client. Is provided by the server via the 'Authenticate' RPC method.
Response:
• Result – [String] Value of the key 'echo' in the request.

GetRate – Fetches rateStat from router statManager. Creates stat if not already created.
Request:
• Stat – [String] Determines which rateStat to fetch, see ratestats.
• Period – [long] Determines which period a stat is fetched for. Measured in ms.
• Token – [String] Token used for authenticating the client. Is provided by the server via the 'Authenticate' RPC method.
Response:
• Result – [double] Returns the average value for the requested rateStat and period.

I2PControl – Manages I2PControl. Ports, passwords and the like.
Request:
• *i2pcontrol.address – [String] Sets a new listen address for I2PControl (only 127.0.0.1 and 0.0.0.0 are implemented in I2PControl currently).
• *i2pcontrol.password – [String] Sets a new password for I2PControl, all Authentication tokens will be revoked.
• *i2pcontrol.port – [String] Switches which port I2PControl will listen for connections on.
• Token – [String] Token used for authenticating the client. Is provided by the server via the 'Authenticate' RPC method.
Response:
• **i2pcontrol.address – [null] Returned if address was changed
• **i2pcontrol.password – [null] Returned if setting was changed
• **i2pcontrol.port – [null] Returned if setting was changed
• SettingsSaved – [Boolean] Returns true if any changes were made.
• RestartNeeded – [Boolean] Returns true if any changes requiring a restart to take effect were made.

RouterInfo – Fetches basic information about the I2P router. Uptime, version etc.
Request:
• *i2p.router.status – [n/a]
• *i2p.router.uptime – [n/a]
• *i2p.router.version – [n/a]
• *i2p.router.net.bw.inbound.1s – [n/a]
• *i2p.router.net.bw.inbound.15s – [n/a]
• *i2p.router.net.bw.outbound.1s – [n/a]
• *i2p.router.net.bw.outbound.15s – [n/a]
• *i2p.router.net.status – [n/a]
• *i2p.router.net.tunnels.participating – [n/a]
• *i2p.router.netdb.activepeers – [n/a]
• *i2p.router.netdb.fastpeers – [n/a]
• *i2p.router.netdb.highcapacitypeers – [n/a]
• *i2p.router.netdb.isreseeding – [n/a]
• *i2p.router.netdb.knownpeers – [n/a]
• Token – [String] Token used for authenticating the client. Is provided by the server via the 'Authenticate' RPC method.
Response:
• **i2p.router.status – [String] What the status of the router is. A free-format, translated string intended for display to the user. May include information such as whether the router is accepting participating tunnels. Content is implementation-dependent.
• **i2p.router.uptime – [long] What the uptime of the router is in ms. Note: i2pd routers prior to version 2.41 returned this value as a string. For compatibility, clients should handle both string and long.
• **i2p.router.version – [String] What version of I2P the router is running.
• **i2p.router.net.bw.inbound.1s – [double] The 1 second average inbound bandwidth in Bps.
• **i2p.router.net.bw.inbound.15s – [double] The 15 second average inbound bandwidth in Bps.
• **i2p.router.net.bw.outbound.1s – [double] The 1 second average outbound bandwidth in Bps.
• **i2p.router.net.bw.outbound.15s – [double] The 15 second average outbound bandwidth in Bps.
• **i2p.router.net.status – [long] What the current network status is. According to the below enum:
  • 0 – OK
  • 1 – TESTING
  • 2 – FIREWALLED
  • 3 – HIDDEN
  • 4 – WARN_FIREWALLED_AND_FAST
  • 5 – WARN_FIREWALLED_AND_FLOODFILL
  • 6 – WARN_FIREWALLED_WITH_INBOUND_TCP
  • 7 – WARN_FIREWALLED_WITH_UDP_DISABLED
  • 8 – ERROR_I2CP
  • 9 – ERROR_CLOCK_SKEW
  • 10 – ERROR_PRIVATE_TCP_ADDRESS
  • 11 – ERROR_SYMMETRIC_NAT
  • 12 – ERROR_UDP_PORT_IN_USE
  • 13 – ERROR_NO_ACTIVE_PEERS_CHECK_CONNECTION_AND_FIREWALL
  • 14 – ERROR_UDP_DISABLED_AND_TCP_UNSET
• **i2p.router.net.tunnels.participating – [long] How many tunnels on the I2P net are we participating in.
• **i2p.router.netdb.activepeers – [long] How many peers have we communicated with recently.
• **i2p.router.netdb.fastpeers – [long] How many peers are considered 'fast'.
• **i2p.router.netdb.highcapacitypeers – [long] How many peers are considered 'high capacity'.
• **i2p.router.netdb.isreseeding – [boolean] Is the router reseeding hosts to its NetDB?
• **i2p.router.netdb.knownpeers – [long] How many peers are known to us (listed in our NetDB).

RouterManager – Manages I2P router restart/shutdown.
Request:
• *FindUpdates – [n/a] Blocking. Initiates a search for signed updates.
• *Reseed – [n/a] Initiates a router reseed, fetching peers into our NetDB from a remote host.
• *Restart – [n/a] Restarts the router.
• *RestartGraceful – [n/a] Restarts the router gracefully (waits for participating tunnels to expire).
• *Shutdown – [n/a] Shuts down the router.
• *ShutdownGraceful – [n/a] Shuts down the router gracefully (waits for participating tunnels to expire).
• *Update – [n/a] Initiates a router update from signed sources.
• Token – [String] Token used for authenticating the client. Is provided by the server via the 'Authenticate' RPC method.
Response:
• **FindUpdates – [boolean] Blocking. Returns true iff a signed update has been found.
• **Reseed – [null] If requested, verifies that a reseed has been initiated.
• **Restart – [null] If requested, verifies that a restart has been initiated.
• **RestartGraceful – [null] If requested, verifies that a graceful restart has been initiated.
• **Shutdown – [null] If requested, verifies that a shutdown has been initiated
• **ShutdownGraceful – [null] If requested, verifies that a graceful shutdown has been initiated
• **Update – [String] Blocking. If requested, returns the status of the the update

NetworkSetting – Fetches or sets various network related settings. Ports, addresses etc.
Request:
• *i2p.router.net.ntcp.port – [String] What port is used for the TCP transport. If null is submitted, current setting will be returned.
• *i2p.router.net.ntcp.hostname – [String] What hostname is used for the TCP transport. If null is submitted, current setting will be returned.
• *i2p.router.net.ntcp.autoip – [String] Use automatically detected ip for TCP transport. If null is submitted, current setting will be returned.
• *i2p.router.net.ssu.port – [String] What port is used for the UDP transport. If null is submitted, current setting will be returned.
• *i2p.router.net.ssu.hostname – [String] What hostname is used for the UDP transport. If null is submitted, current setting will be returned.
• *i2p.router.net.ssu.autoip – [String] Which methods should be used for detecting the ip address of the UDP transport. If null is submitted, current setting will be returned.
• *i2p.router.net.ssu.detectedip – [null] What ip has been detected by the UDP transport.
• *i2p.router.net.upnp – [String] Is UPnP enabled. If null is submitted, current setting will be returned.
• *i2p.router.net.bw.share – [String] How many percent of bandwidth is usable for participating tunnels. If null is submitted, current setting will be returned.
• *i2p.router.net.bw.in – [String] How many KB/s of inbound bandwidth is allowed. If null is submitted, current setting will be returned.
• *i2p.router.net.bw.out – [String] How many KB/s of outbound bandwidth is allowed. If null is submitted, current setting will be returned.
• *i2p.router.net.laptopmode – [String] Is laptop mode enabled (change router identity and UDP port when IP changes ). If null is submitted, current setting will be returned.
• Token – [String] Token used for authenticating the client. Is provided by the server via the 'Authenticate' RPC method. If null is submitted, current setting will be returned.
Response:
• Note: i2pd routers prior to version 2.41 returned some of these values as numbers. For compatibility, clients should handle both strings and numbers.
• **i2p.router.net.ntcp.port – [String] If requested, returns the port used for the TCP transport.
• **i2p.router.net.ntcp.hostname – [String] If requested, returns the hostname used for the TCP transport.
• **i2p.router.net.ntcp.autoip – [String] If requested, returns the method used for automatically detecting ip for the TCP transport.
• **i2p.router.net.ssu.port – [String] If requested, returns the port used for the UDP transport.
• **i2p.router.net.ssu.hostname – [String] If requested, returns the hostname used for the UDP transport.
• **i2p.router.net.ssu.autoip – [String] If requested, returns methods used for detecting the ip address of the UDP transport.
• **i2p.router.net.ssu.detectedip – [String] If requested, returns what ip has been detected by the UDP transport.
• **i2p.router.net.upnp – [String] If requested, returns the UPNP setting.
• **i2p.router.net.bw.share – [String] If requested, returns how many percent of bandwidth is usable for participating tunnels.
• **i2p.router.net.bw.in – [String] If requested, returns how many KB/s of inbound bandwidth is allowed.
• **i2p.router.net.bw.out – [String] If requested, returns how many KB/s of outbound bandwidth is allowed.
• **i2p.router.net.laptopmode – [String] If requested, returns the laptop mode.
• SettingsSaved – [boolean] Have the provided settings been saved.
• RestartNeeded – [boolean] Is a restart needed for the new settings to be used.

AdvancedSettings – Allows for manipulation of advanced i2p settings
Set: – Set the sent key-value pairs
• {"setting-key": "setting-value", ...} – [Map]
SetAll: – Set the sent key-value pairs, remove everything else
• {"setting-key": "setting-value", ...} – [Map]
Get: – Get the key-value pairs for the sent keys
• "setting-key" – [String]
GetAll: – Get all the key-value pairs

* denotes an optional value.

** denotes a possibly occuring return value

Error codes

Standard JSON-RPC2 error codes.
• -32700 – JSON parse error.
• -32600 – Invalid request.
• -32601 – Method not found.
• -32602 – Invalid parameters.
• -32603 – Internal error.

I2PControl specific error codes.
• -32001 – Invalid password provided.
• -32002 – No authentication token presented.
• -32003 – Authentication token doesn't exist.
• -32004 – The provided authentication token was expired and will be removed.
• -32005 – The version of the I2PControl API used wasn't specified, but is required to be specified.
• -32006 – The version of the I2PControl API specified is not supported by I2PControl.