ec2HTTP: EC2 API Requests
In HanjoStudy/awsR: Amazon Web Services EC2 Client Package

Internal workhorse function to execute an EC2 API Request

ec2HTTP(query = list(), headers = list(), dryrun = FALSE,
  verbose = getOption("verbose", FALSE),
  region = Sys.getenv("AWS_DEFAULT_REGION", "us-east-1"), key = NULL,
  secret = NULL, session_token = NULL, version = "2016-11-15",
  clean_response = TRUE, ...)

`query`	A named list of query string parameters.
`headers`	A list of headers to pass to the HTTP request.
`dryrun`	An optional logical specifying whether to execute a consequence-free “dry run” of the request.
`verbose`	A logical indicating whether to be verbose. Default is given by `options("verbose")`.
`region`	A character string specifying an AWS region. See `aws.signature::locate_credentials()`.
`key`	A character string specifying an AWS Access Key. See `aws.signature::locate_credentials()`.
`secret`	A character string specifying an AWS Secret Key. See `aws.signature::locate_credentials()`.
`session_token`	Optionally, a character string specifying an AWS temporary Session Token to use in signing a request. See `aws.signature::locate_credentials()`.
`version`	A character string specifying an API version. Default is “2016-11-15”.
`clean_response`	A logical indicating whether to remove line breaks from the response. This is useful for returning a clean response object, but may not be appropriate if the XML-formatted API response contains meaningful linebreaks (e.g., in a keypair).
`...`	Additional arguments passed to `httr::GET()`.