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raddec-relay

Relay raddecs to and from remote servers

Interface for specific raddec-relay instances which relay raddecs to and from remote servers, with optional load balancing (see raddec-balancer). Currently supports the following raddec-relay-x instances:

Installation

npm install raddec-relay

Hello raddec-relay!

The following code will configure the relaying of raddecs over UDP from the local instance to port 55555 on the localhost.

const RaddecRelay = require('raddec-relay');
const RaddecRelayUdp = require('raddec-relay-udp');

const sources = [ { address: "0.0.0.0" } ];
const targets = [ { address: "127.0.0.1", port: 55555 } ];

let relay = new RaddecRelay();

relay.addChannel(RaddecRelayUdp, { sources: sources, targets: targets });

Configuration Examples

raddec-relay supports a variety of configurations for receiving and/or relaying raddecs, as described in the following examples.

Example: relay raddecs to remote server(s)

const RaddecRelay = require('raddec-relay');
const RaddecRelayUdp = require('raddec-relay-udp');

const targets = [
    { address: "12.34.56.78", port: 50001 },
    { address: "98.76.54.32", port: 50001 }
];

let relay = new RaddecRelay();
relay.addChannel(RaddecRelayUdp, { targets: targets });

let raddec = ...;  // Typically locally decoded radio packets in this case

relay.relayRaddec(raddec);  // Relay the raddec to the remote servers

Example: listen for and handle inbound raddecs

const RaddecRelay = require('raddec-relay');
const RaddecRelayUdp = require('raddec-relay-udp');

const sources = [ { address: "0.0.0.0", port: 50001 } ];

let relay = new RaddecRelay({ raddecHandler: handleRaddec });
relay.addChannel(RaddecRelayUdp, { sources: sources });

function handleRaddec(raddec) {
  // Do something with the received raddec
}

Example: relay raddecs from source(s) to target(s)

const RaddecRelay = require('raddec-relay');
const RaddecRelayUdp = require('raddec-relay-udp')

const sources = [ { address: "0.0.0.0", port: 50001 } ];
const targets = [ { address: "12.34.56.78", port: 50001 } ];

let relay = new RaddecRelay();
relay.addChannel(RaddecRelayUdp, { sources: sources,
                                   targets: targets });

Example: balance raddecs from source(s) across targets

const RaddecRelay = require('raddec-relay');
const RaddecBalancer = require('raddec-balancer');
const RaddecRelayUdp = require('raddec-relay-udp')

const sources = [ { address: "0.0.0.0", port: 50001 } ];
const targets = [ { address: "127.0.0.1", port: 55550 },
                  { address: "127.0.0.1", port: 55551 },
                  { address: "127.0.0.1", port: 55552 },
                  { address: "127.0.0.1", port: 55553 } ];

let balancer = new RaddecBalancer({ numberOfTargets: targets.length });
let relay = new RaddecRelay({ balancer: balancer });
relay.addChannel(RaddecRelayUdp, { sources: sources,
                                   targets: targets });

Options

raddec-relay supports the following options:

Property Default Description
enableForwarding true Forward raddecs from sources to targets (if both are present) through the balancer (if present)
balancer null A raddec-balancer instance
raddecHandler null Function to call when source raddec received

License

MIT License

Copyright (c) 2019 reelyActive

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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