jsonrpc-proxy

Status

This library has not been updated in a while and is here just for archive purposes. You might consider looking at https://github.com/AcalaNetwork/subway which is supposed to serve the same purpose and is way more recent.

Overview

The proxy has a pluggable architecture of middlewares. Each middleware receives every RPC call and can decide to either terminate it (return a response) or pass it forward to the next middleware. Middlewares are also able to modify the response object.

As the last middleware we are using Upstream middleware, which is responsible for calling the target node.

Middlewares included in this repo:

• Simple caching middleware
• Simple permissioning middleware
• WebSockets upstream middleware

Similarly pluggable are JSON-RPC transports that the proxy exposes. Currently supported:

• TCP server
• HTTP server
• IPC server
• WebSockets server

Ideas

• Rate Limitting
• Fail over
• Load balancing

Usage

rpc-proxy 0.1
Parity Technologies Ltd <admin@parity.io>
Generic RPC proxy, featuring caching and load balancing.

USAGE:
    rpc-proxy [OPTIONS]

FLAGS:
    -h, --help       Prints help information
    -V, --version    Prints version information

OPTIONS:
        --cached-methods-path <cached-methods-path>
            A path to a JSON file containing a list of methods that should be
            cached. See examples for the file schema. [default: -]
        --http-cors <http-cors>
            Specify CORS header for HTTP JSON-RPC API responses.Special options:
            "all", "null", "none". [default: none]
        --http-cors-max-age <http-cors-max-age>
            Configures AccessControlMaxAge header value in milliseconds.Informs
            the client that the preflight request is not required for the
            specified time. Use 0 to disable. [default: 3600000]
        --http-hosts <http-hosts>
            List of allowed Host header values. This option willvalidate the
            Host header sent by the browser, it isadditional security against
            some attack vectors. Specialoptions: "all", "none". [default: none]
        --http-ip <http-ip>
            Configures HTTP server interface. [default: 127.0.0.1]

        --http-max-payload <http-max-payload>
            Maximal HTTP server payload in Megabytes. [default: 5]

        --http-port <http-port>
            Configures HTTP server listening port. [default: 9934]

        --http-rest-api <http-rest-api>
            Enables REST -> RPC converter for HTTP server. Allows you tocall RPC
            methods with `POST /<methodname>/<param1>/<param2>`.The "secure"
            option requires the `Content-Type: application/json`header to be
            sent with the request (even though the payload is ignored)to prevent
            accepting POST requests from any website (via form submission).The
            "unsecure" option does not require any `Content-Type`.Possible
            options: "unsecure", "secure", "disabled". [default: disabled]
        --http-threads <http-threads>
            Configures HTTP server threads. [default: 4]

        --ipc-path <ipc-path>
            Configures IPC server socket path. [default: ./jsonrpc.ipc]

        --ipc-request-separator <ipc-request-separator>
            Configures TCP server request separator (single byte). If "none" the
            parser will try to figure out requests boundaries. [default: none]
        --tcp-ip <tcp-ip>
            Configures TCP server interface. [default: 127.0.0.1]

        --tcp-port <tcp-port>
            Configures TCP server listening port. [default: 9955]

        --tcp-request-separator <tcp-request-separator>
            Configures TCP server request separator (single byte). If "none" the
            parser will try to figure out requests boundaries. Default is new
            line character. [default: 10]
        --upstream-ws <upstream-ws>
            Address of the parent WebSockets RPC server that we should connect
            to. [default: ws://127.0.0.1:9944]
        --websockets-hosts <websockets-hosts>
             List of allowed Host header values. This option will validate the
            Host header sent by the browser, it is additional security against
            some attack vectors. Special options: "all", "none". [default: none]
        --websockets-ip <websockets-ip>
            Configures WebSockets server interface. [default: 127.0.0.1]

        --websockets-max-connections <websockets-max-connections>
            Maximum number of allowed concurrent WebSockets JSON-RPC
            connections. [default: 100]
        --websockets-origins <websockets-origins>
             Specify Origin header values allowed to connect. Special options:
            "all", "none".  [default: none]
        --websockets-port <websockets-port>
            Configures WebSockets server listening port. [default: 9945]