exception on xcs.start after updating to 0.1.8

[freerider7777]

windows 10, node 14.18.1

var xcs = new Sender(...)

xcs.start();

TypeError: this.client.socket.setTimeout is not a function
at Sender.start (C:...\FCM_XMPPServer\node_modules\node-xcs\google\Sender.js:146:24)
at Object. (C:...\FCM_XMPPServer\Index.js:424:7)
at Module._compile (internal/modules/cjs/loader.js:1085:14)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)
at Module.load (internal/modules/cjs/loader.js:950:32)
at Function.Module._load (internal/modules/cjs/loader.js:790:12)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:76:12)
at internal/main/run_main_module.js:17:47

[freerider7777]

If we ignore it, we get the other error

Error: self signed certificate
at TLSSocket.onConnectSecure (_tls_wrap.js:1515:34)
at TLSSocket.emit (events.js:400:28)
at TLSSocket._finishInit (_tls_wrap.js:937:8)
at TLSWrap.ssl.onhandshakedone (_tls_wrap.js:709:12) {
code: 'DEPTH_ZERO_SELF_SIGNED_CERT'

[AdamRatcliffe-TomTom]

I also get this error on OSX, node 16.10.0.

I worked around it by calling xcs.client.start() to avoid the setTimeout() call on the null socket reference. I also needed to set process.env.NODE_TLS_REJECT_UNAUTHORIZED = 0 to avoid the self signed certificate error;