t.Fatalf("got error: %v, expected success", err)
				} else if err == nil && !isBoringCurve(curveid) {
					t.Fatalf("got success, expected error")
				}
			})
		})
	}
}

func boringHandshake(t *testing.T, clientConfig, serverConfig *Config) (clientErr, serverErr error) {
	c, s := localPipe(t)
	client := Client(c, clientConfig)
	server := Server(s, serverConfig)
	done := make(chan error, 1)
	go func() {