"load_assignment": {
          "cluster_name": "sds-grpc",
          "endpoints": [{
            "lb_endpoints": [{
              "endpoint": {
                "address":{
                  "pipe": {
                    "path": "./var/run/secrets/workload-spiffe-uds/socket"
                  }
                }
              }
            }]
          }]
        }
      },
      {

        "load_assignment": {
          "cluster_name": "sds-grpc",
          "endpoints": [{
            "lb_endpoints": [{
              "endpoint": {
                "address":{
                  "pipe": {
                    "path": "./var/run/secrets/workload-spiffe-uds/socket"
                  }
                }
              }
            }]
          }]
        }
      },
      {

			hook := hookCopyFileRange(t)

			pr1, pw1, err := Pipe()
			if err != nil {
				t.Fatal(err)
			}
			defer pr1.Close()
			defer pw1.Close()

			pr2, pw2, err := Pipe()
			if err != nil {
				t.Fatal(err)
			}
			defer pr2.Close()
			defer pw2.Close()

			// The pipe is empty, and PIPE_BUF is large enough
			// for this, by (POSIX) definition, so there is no

        "load_assignment": {
          "cluster_name": "sds-grpc",
          "endpoints": [{
            "lb_endpoints": [{
              "endpoint": {
                "address":{
                  "pipe": {
                    "path": "./var/run/secrets/workload-spiffe-uds/socket"
                  }
                }
              }
            }]
          }]
        }
      },
      {

        "load_assignment": {
          "cluster_name": "sds-grpc",
          "endpoints": [{
            "lb_endpoints": [{
              "endpoint": {
                "address":{
                  "pipe": {
                    "path": "./var/run/secrets/workload-spiffe-uds/socket"
                  }
                }
              }
            }]
          }]
        }
      },
      {

        "load_assignment": {
          "cluster_name": "sds-grpc",
          "endpoints": [{
            "lb_endpoints": [{
              "endpoint": {
                "address":{
                  "pipe": {
                    "path": "./var/run/secrets/workload-spiffe-uds/socket"
                  }
                }
              }
            }]
          }]
        }
      },
      {

        "load_assignment": {
          "cluster_name": "sds-grpc",
          "endpoints": [{
            "lb_endpoints": [{
              "endpoint": {
                "address":{
                  "pipe": {
                    "path": "./var/run/secrets/workload-spiffe-uds/socket"
                  }
                }
              }
            }]
          }]
        }
      },
      {

        "load_assignment": {
          "cluster_name": "sds-grpc",
          "endpoints": [{
            "lb_endpoints": [{
              "endpoint": {
                "address":{
                  "pipe": {
                    "path": "./var/run/secrets/workload-spiffe-uds/socket"
                  }
                }
              }
            }]
          }]
        }
      },
      {

		goos      string
		path      string
		isUNCPath bool
	}{
		{
			goos:      "linux",
			path:      `/usr/bin`,
			isUNCPath: false,
		},
		{
			goos:      "linux",
			path:      `\\.\pipe\foo`,
			isUNCPath: false,
		},
		{
			goos:      "windows",
			path:      `C:\foo`,
			isUNCPath: false,
		},
		{
			goos:      "windows",
			path:      `\\server\share\foo`,

				// body could be an io.LimitReader, but it shouldn't matter
				// as long as both sides are behaving.
				body, req.pw = io.Pipe()
			} else {
				body = emptyBody
			}
			go c.serveRequest(req, body)
		}
		if len(content) > 0 {
			// TODO(eds): This blocks until the handler reads from the pipe.
			// If the handler takes a long time, it might be a problem.
			req.pw.Write(content)
		} else {