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Add an option bindAddr which can be passed to TuyaLinkWizard #15

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Merged
merged 1 commit into from
Nov 16, 2021
Merged

Add an option bindAddr which can be passed to TuyaLinkWizard #15

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6 changes: 4 additions & 2 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -25,7 +25,7 @@ const TuyaLink = require('./lib/link.js');
* password: 'example-password'});
*/
class TuyaLinkWizard {
constructor({email, password, region = 'us', timezone = 'America/Chicago', apiKey, apiSecret, schema} = {}) {
constructor({email, password, region = 'us', timezone = 'America/Chicago', apiKey, apiSecret, schema, bindAddr} = {}) {
if (!email || !password) {
throw new Error('Both email and password must be provided');
}
Expand All @@ -34,6 +34,7 @@ class TuyaLinkWizard {
this.password = password;
this.region = region;
this.timezone = timezone;
this.bindAddr = bindAddr;

this.api = new TuyaContext({
baseUrl: `https://openapi.tuya${region}.com`,
Expand Down Expand Up @@ -123,7 +124,8 @@ class TuyaLinkWizard {
token: token.token,
secret: token.secret,
ssid,
wifiPassword});
wifiPassword,
bindAddr: this.bindAddr});

// While UDP packets are being sent, start polling for device
debug('Polling cloud for details on token...');
Expand Down
22 changes: 21 additions & 1 deletion lib/link.js
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
const dgram = require('dgram');
const delay = require('delay');
const debug = require('debug')('@tuyapi/link:manual');
const os = require('os');

/**
* A lower level option for linking
Expand All @@ -14,8 +15,10 @@ const debug = require('debug')('@tuyapi/link:manual');
class TuyaLink {
constructor() {
this.abortBroadcasting = false;
this.bindAddr = undefined;
}


/**
* Thin wrapper for this.sendSmartLinkStart()
* and this.sendSmartLinkData(). Unless you
Expand Down Expand Up @@ -66,6 +69,23 @@ class TuyaLink {
throw new Error('Invalid WiFi password');
}

if (options.bindAddr !== undefined)
{
if (typeof options.bindAddr !== 'string')
{
throw new Error('Invalid binding address');
}

const interfaces = os.networkInterfaces();
if (!Object.keys(interfaces).some(name =>
!interfaces[name].some(assigned => assigned.address.toLowerCase() === options.bindAddr.toLowerCase())
))
{
throw new Error('Invalid binding address');
}
this.bindAddr = options.bindAddr;
}

debug('Sending SmartLink initialization packets');

await this.sendSmartLinkStart();
Expand Down Expand Up @@ -335,7 +355,7 @@ class TuyaLink {
this.udpClient.on('listening', function () {
this.setBroadcast(true);
});
this.udpClient.bind(0);
this.udpClient.bind(0, this.bindAddr);
}

// 0-filled buffer
Expand Down