test.swift

  // creates a New Session
	// returns Session ID
	func createNewSession() ->String {
		let urlString = "http://" + self.host + ":" + self.port + "/session"

		guard let url = URL(string: urlString) else {
		  print("Error: cannot create URL")
		  return ""
		}
		var request = URLRequest(url: url)
		request.httpMethod = "POST"

		////////////////////
		// HTTP POST Body //
		////////////////////

		let httpBodyDict = [
			"desiredCapabilities" : [
				"browserName": "chrome",
				"version": "",
				"platform": "MAC"
			]
		]

		do {
			try request.httpBody = JSONSerialization.data(withJSONObject: httpBodyDict)
		} catch {
			print("ERROR WITH JSON")
		}
		request.setValue("application/json", forHTTPHeaderField: "Content-Type")

		// set up session
		let config = URLSessionConfiguration.default
		let session = URLSession(configuration: config)

		// create wait group 
		let group = DispatchGroup()

		// make the request
		group.enter()
		let task = session.dataTask(with: request, completionHandler: { (data, response, error) in

		  if let error = error {
		  	print(error)
		  }

		  if let response = response {
		  	print(response)
		  }

		  group.leave()

		})
		task.resume()

		group.wait()
		return ""

	}