Failing to send HTTP/1.0 POST request

[yashp5]

Failing to send a HTTP/1.0 post request. Getting the following error.

TypeError [ERR_INVALID_PROTOCOL]: Protocol "http:" not supported. Expected "https:"
    at new NodeError (node:internal/errors:329:5)
    at new ClientRequest (node:_http_client:168:11)
    at Object.request (node:http:52:10)
    at /Users/yash/elocity/utilityportal-backend/src/ocpp/command/CommandStateManager.ts:167:43
    at runMicrotasks (<anonymous>)
    at processTicksAndRejections (node:internal/process/task_queues:94:5) {
  code: 'ERR_INVALID_PROTOCOL'
}

Configuration of the agent and http request client:

const agentConfig = {
	host: domain,
	port: Number.isNaN(port) ? 80 : +port,
	spdy: {
		protocols: ["http/1.0"],
		ssl: false
	},
};
const agent = spdy.createAgent(agentConfig);
const httpOptions = {
	agent,
	method: "POST",
	path,
	headers: {
		"Content-Type": "application/xml",
		"Content-Length": Buffer.byteLength(client.lastRequest),
	},
	protocol: "http:",
	port: Number.isNaN(port) ? 80 : +port,
};
const post_req = http.request(httpOptions, function (res) {
	res.setEncoding("utf8");
	var result = "";
	res.on("data", function (chunk) {
		result += chunk;
	});
	res.on("end", function () {
		console.log(result);
	});
});
post_req.removeHeader("Transfer-Encoding");
post_req.on("error", function (err) {
	console.log(err);
});
post_req.write(client.lastRequest);
post_req.end();
})

I am not really familiar with making HTTP/1.0 request so any help regarding this would be greatly appreciated.

[lamweili]

Add the plain options.

const agentConfig = {
	host: domain,
	port: Number.isNaN(port) ? 80 : +port,
	spdy: {
		protocols: ["http/1.0"],
+               plain: true, 
		ssl: false
	},
};