// +build go1.6

package s3

import (

	"github.com/aws/aws-sdk-go/aws"

	"github.com/aws/aws-sdk-go/aws/request"

)

func platformRequestHandlers(r *request.Request) {

	if r.Operation.HTTPMethod == "PUT" {

		// 100-Continue should only be used on put requests.

		r.Handlers.Sign.PushBack(add100Continue)

	}

}

func add100Continue(r *request.Request) {

	if aws.BoolValue(r.Config.S3Disable100Continue) {

		return

	}

	if r.HTTPRequest.ContentLength < 1024*1024*2 {

		// Ignore requests smaller than 2MB. This helps prevent delaying

		// requests unnecessarily.

		return

	}

	r.HTTPRequest.Header.Set("Expect", "100-Continue")

}