vendor/github.com/aws/aws-sdk-go/aws/request/request_1_7.go

   1 // +build !go1.8
   2
   3 package request
   4
   5 import "io"
   6
   7 // NoBody is an io.ReadCloser with no bytes. Read always returns EOF
   8 // and Close always returns nil. It can be used in an outgoing client
   9 // request to explicitly signal that a request has zero bytes.
  10 // An alternative, however, is to simply set Request.Body to nil.
  11 //
  12 // Copy of Go 1.8 NoBody type from net/http/http.go
  13 type noBody struct{}
  14
  15 func (noBody) Read([]byte) (int, error)         { return 0, io.EOF }
  16 func (noBody) Close() error                     { return nil }
  17 func (noBody) WriteTo(io.Writer) (int64, error) { return 0, nil }
  18
  19 // NoBody is an empty reader that will trigger the Go HTTP client to not include
  20 // and body in the HTTP request.
  21 var NoBody = noBody{}
  22
  23 // ResetBody rewinds the request body back to its starting position, and
  24 // set's the HTTP Request body reference. When the body is read prior
  25 // to being sent in the HTTP request it will need to be rewound.
  26 //
  27 // ResetBody will automatically be called by the SDK's build handler, but if
  28 // the request is being used directly ResetBody must be called before the request
  29 // is Sent.  SetStringBody, SetBufferBody, and SetReaderBody will automatically
  30 // call ResetBody.
  31 func (r *Request) ResetBody() {
  32         body, err := r.getNextRequestBody()
  33         if err != nil {
  34                 r.Error = err
  35                 return
  36         }
  37
  38         r.HTTPRequest.Body = body
  39 }