Allow a custom agent to be passed in

[CliffS]

This change allows a custom agent to be passed into the call to bent(). It will permit proxying both by use of a local proxy or a remote proxy. There may be other uses that can make use of a custom agent.

I have added one test via a squid server set up only to work against the usual test server.

[CliffS]

@mikeal Do you dislike the principle behind this PR? If so I'll delete it.

[CliffS]

@mikeal Please advise whether you want this PR, in which case I'll update it, or if you don't, in which case I'll simply close it.

Thanks.

[CliffS]

Closing this PR owing to a lack of interest.

[Niklas-Dahlquist]

Can this topic be reopened? Would appreciate if proxies could be respected with bent

[CliffS]

Can this topic be reopened? Would appreciate if proxies could be respected with bent

I'm happy to bring this up to date. But only if @mikeal wants it.

[Niklas-Dahlquist]

Can this topic be reopened? Would appreciate if proxies could be respected with bent

I'm happy to bring this up to date. But only if @mikeal wants it.

@mikeal Do you agree to this topic?

[SalAlba]

................................................................................................
TypeError: Cannot convert object to primitive value
at RegExp.exec ()
at checkInvalidHeaderChar (node:_http_common:224:10)
at _node_internal (node:_http_outgoing:626:7)
at ClientRequest.setHeader (node:_http_outgoing:651:3)
at new ClientRequest (node:_http_client:291:14)
at Object.request (node:https:358:10)
at C:\node-sandbox\4-pro\node_modules\bent\src\nodejs.js:127:19
at new Promise ()
at C:\node-sandbox\4-pro\node_modules\bent\src\nodejs.js:126:10
at testMicrosoftTts (C:\node-sandbox\4-pro\testMicrosoftTts.js:46:32)
Cannot convert object to primitive value
................................................................................................